The MAX893L smart, low-voltage, P-channel, MOSFET power switch is intended for high-side load-switching applications. This switch operates with inputs from +2.7V to +5.5V, making it ideal for both +3V and +5V systems. Internal current-limiting circuitry protects the input supply against overload. Thermal overload protection limits power dissipation and junction temperature.The MAX893L's maximum programmed current limit is 1.2A. The typical short-circuit current is 1.5 times the programmed current; therefore, a 1.2A programmed limit will result in a 1.8A short-circuit current limit. The current limit through the switch is programmed with a resistor from SET to ground. The quiescent supply current is a low 13µA. When the switch is off, the supply current decreases to 0.1µA.The MAX893L is available in an 8-pin SO package.ApplicationsAccess Bus SlotsPCMCIA SlotsPortable EquipmentUSB HubsUSB Ports

The MAX9010/MAX9011/MAX9013 single and MAX9012 dual, high-speed comparators operate from a single 4.5V to 5.5V power supply and feature low-current consumption. They have precision differential inputs and TTL outputs. They feature short propagation delay (5ns, typ), low-supply current, and a wide common-mode input range that includes ground. They are ideal for low-power, high-speed, single-supply applications.The comparator outputs remain stable through the linear region when driven with slow-moving or low input-overdrive signals, eliminating the output instability common to other high-speed comparators. The input voltage range extends to 200mV below ground with no output phase reversal. The MAX9013 features complementary outputs and both the MAX9011/MAX9013 have a latch enable input (LE). The MAX9013 is an improved plug-in replacement for the industry-standard MAX913 and LT1016/LT1116, offering lower power and higher speed when used in a single 5V supply application. For space-critical designs, the single MAX9010 is available in the tiny 6-pin SC70 package. The single MAX9011 is available in a space-saving 6-pin SOT23 package. The dual MAX9012 and the single MAX9013 are available in 8-pin µMAX® and 8-pin SO packages. All products in the family are guaranteed over the extended temperature range of -40°C to +85°C.ApplicationsBattery-Powered ApplicationsFast Pulse Height/Width DiscriminatorsHigh-Speed Line ReceiversHigh-Speed Sampling CircuitsHigh-Speed Signal SquaringHigh-Speed TriggeringSwitching RegulatorsZero-Crossing Detectors

The MAX900–MAX903 high-speed, low-power, single/dual/quad voltage comparators feature differential analoginputs and TTL-logic outputs with active internal pullups.Fast propagation delay (8ns typ at 5mV overdrive)makes the MAX900–MAX903 ideal for fast A/D convertersand sampling circuits, line receivers, V/F converters,and many other data-discrimination applications.All comparators can be powered from separate analogand digital power supplies or from a single combined supplyvoltage. The analog input common-mode rangeincludes the negative rail, allowing ground sensing whenpowered from a single supply. The MAX900–MAX903consume 18mW per comparator when powered from +5V.The MAX900–MAX903 are equipped with independentTTL-compatible latch inputs. The comparator outputstates are held when the latch inputs are driven low. TheMAX901 provides the same performance as theMAX900/MAX902/MAX903 with the exception of thelatches.For newer, pin-for-pin compatible parts with the samespeed and only half the power dissipation, see theMAX9201/MAX9202/MAX9203 data sheet.ApplicationsHigh-Speed A/D ConvertersHigh-Speed Data SamplingHigh-Speed V/F ConvertersInput Trigger CircuitryLine ReceiversPWM CircuitsThreshold Detectors

The MAX9691/MAX9692/MAX9693 are ultra-fast ECL comparators capable of very short propagation delays. Their design maintains the excellent DC matching characteristics normally found only in slower comparators.The MAX9691/MAX9692/MAX9693 have differential inputs and complementary outputs that are fully compatible with ECL-logic levels. Output current levels are capable of driving 50Ω terminated transmission lines. The ultra-fast operation makes signal processing possible at frequencies in excess of 600MHz.The MAX9692/MAX9693 feature a latch-enable (LE) function that allows the comparator to be used in a sample-hold mode. When LE is ECL high, the comparator functions normally. When LE is driven ECL low, the outputs are forced to an unambiguous ECL-logic state, dependent on the input conditions at the time of the latch input transition. If the latch-enable function is not used on either of the two comparators, the appropriate LE input must be connected to ground; the companion active-low LE input must be connected to a high ECL logic level.These devices are available in SO, QSOP, and tiny µMAX® packages for added space savings.ApplicationsHigh-Speed Line ReceiversHigh-Speed TriggeringPeak DetectorsThreshold Detectors

The MAX9691/MAX9692/MAX9693 are ultra-fast ECL comparators capable of very short propagation delays. Their design maintains the excellent DC matching characteristics normally found only in slower comparators.The MAX9691/MAX9692/MAX9693 have differential inputs and complementary outputs that are fully compatible with ECL-logic levels. Output current levels are capable of driving 50Ω terminated transmission lines. The ultra-fast operation makes signal processing possible at frequencies in excess of 600MHz.The MAX9692/MAX9693 feature a latch-enable (LE) function that allows the comparator to be used in a sample-hold mode. When LE is ECL high, the comparator functions normally. When LE is driven ECL low, the outputs are forced to an unambiguous ECL-logic state, dependent on the input conditions at the time of the latch input transition. If the latch-enable function is not used on either of the two comparators, the appropriate LE input must be connected to ground; the companion active-low LE input must be connected to a high ECL logic level.These devices are available in SO, QSOP, and tiny µMAX® packages for added space savings.ApplicationsHigh-Speed Line ReceiversHigh-Speed TriggeringPeak DetectorsThreshold Detectors

The MAX146/MAX147 12-bit data-acquisition systems combine an 8-channel multiplexer, high-bandwidth track/hold, and serial interface with high conversion speed and low power consumption. The MAX146 operates from a single +2.7V to +3.6V supply; the MAX147 operates from a single +2.7V to +5.25V supply. Both devices' analog inputs are software configurable for unipolar/bipolar and single-ended/differential operation.The 4-wire serial interface connects directly to SPI™/ QSPI™ and MICROWIRE™ devices without external logic. A serial strobe output allows direct connection to TMS320-family digital signal processors. The MAX146/MAX147 use either the internal clock or an external serial-interface clock to perform successive-approximation analog-to-digital conversions.The MAX146 has an internal 2.5V reference, while the MAX147 requires an external reference. Both parts have a reference-buffer amplifier with a ±1.5% voltage-adjustment range.These devices provide a hard-wired SHDN-bar pin and a software-selectable power-down, and can be programmed to automatically shut down at the end of a conversion. Accessing the serial interface automatically powers up the MAX146/MAX147, and the quick turn-on time allows them to be shut down between all conversions. This technique can cut supply current to under 60µA at reduced sampling rates.The MAX146/MAX147 are available in 20-pin DIP and SSOP packages.For 4-channel versions of these devices, see the MAX1246/MAX1247 data sheet.ApplicationsBattery-Powered ApplicationsData AcquisitionMedical InstrumentsPen DigitizersPortable Data LoggingProcess Control

The MAX146/MAX147 12-bit data-acquisition systems combine an 8-channel multiplexer, high-bandwidth track/hold, and serial interface with high conversion speed and low power consumption. The MAX146 operates from a single +2.7V to +3.6V supply; the MAX147 operates from a single +2.7V to +5.25V supply. Both devices' analog inputs are software configurable for unipolar/bipolar and single-ended/differential operation.The 4-wire serial interface connects directly to SPI™/ QSPI™ and MICROWIRE™ devices without external logic. A serial strobe output allows direct connection to TMS320-family digital signal processors. The MAX146/MAX147 use either the internal clock or an external serial-interface clock to perform successive-approximation analog-to-digital conversions.The MAX146 has an internal 2.5V reference, while the MAX147 requires an external reference. Both parts have a reference-buffer amplifier with a ±1.5% voltage-adjustment range.These devices provide a hard-wired SHDN-bar pin and a software-selectable power-down, and can be programmed to automatically shut down at the end of a conversion. Accessing the serial interface automatically powers up the MAX146/MAX147, and the quick turn-on time allows them to be shut down between all conversions. This technique can cut supply current to under 60µA at reduced sampling rates.The MAX146/MAX147 are available in 20-pin DIP and SSOP packages.For 4-channel versions of these devices, see the MAX1246/MAX1247 data sheet.ApplicationsBattery-Powered ApplicationsData AcquisitionMedical InstrumentsPen DigitizersPortable Data LoggingProcess Control

The MAX1481/MAX1484/MAX1485/MAX1486 providesoftware-selectable, half-/full-duplex, low-power, slew-rate-limited, and high-speed (12Mbps) RS-485/RS-422operation in a 10-pin µMAX® package—the smallest10-pin package available.The software-selectable, half-/full-duplex MAX1485/MAX1486 make obsolete the normally larger and moreexpensive solutions required for selectable half-/full-duplexRS-485/RS-422 operation: 1) a 14-pin, full-duplextransceiver configured via jumpers betweenreceiver and transmitter lines, or 2) two 8-pin, half-duplextransceivers, which require an additional inverterlogic gate for software selectability.The MAX1481/MAX1484 are functionally equivalent tothe industry-standard MAX491 and 75180, and aredesigned for space-constrained, full-duplex RS-422applications.All parts contain one driver and one receiver and featurea 1/8-unit-load receiver input impedance, allowingup to 256 transceivers on the bus. The MAX1481/MAX1485 feature reduced-slew-rate drivers that minimizeEMI and reduce reflections caused by improperlyterminated cables, allowing error-free data transmissionup to 250kbps. The MAX1484/MAX1486 driver slewrates are not limited, allowing them to transmit up to12Mbps.The MAX1481/MAX1484/MAX1485/MAX1486 draw only300µA of supply current. The MAX1481 has a low-powershutdown mode that reduces supply current to only0.1µA. All devices operate from a single 5V supply.Drivers are output short-circuit current limited and areprotected against excessive power dissipation bythermal-shutdown circuitry that places the driver outputsinto a high-impedance state. The receiver input has a fail-safefeature that guarantees a logic-high output if theinput is open circuit.ApplicationsBattery-Powered ApplicationsHandheld EquipmentIndustrial Control Local Area NetworksLevel TranslatorsLow-Power RS-422/RS-485 CommunicationsTransceivers for EMI-Sensitive Applications

The MAX1481/MAX1484/MAX1485/MAX1486 providesoftware-selectable, half-/full-duplex, low-power, slew-rate-limited, and high-speed (12Mbps) RS-485/RS-422operation in a 10-pin µMAX® package—the smallest10-pin package available.The software-selectable, half-/full-duplex MAX1485/MAX1486 make obsolete the normally larger and moreexpensive solutions required for selectable half-/full-duplexRS-485/RS-422 operation: 1) a 14-pin, full-duplextransceiver configured via jumpers betweenreceiver and transmitter lines, or 2) two 8-pin, half-duplextransceivers, which require an additional inverterlogic gate for software selectability.The MAX1481/MAX1484 are functionally equivalent tothe industry-standard MAX491 and 75180, and aredesigned for space-constrained, full-duplex RS-422applications.All parts contain one driver and one receiver and featurea 1/8-unit-load receiver input impedance, allowingup to 256 transceivers on the bus. The MAX1481/MAX1485 feature reduced-slew-rate drivers that minimizeEMI and reduce reflections caused by improperlyterminated cables, allowing error-free data transmissionup to 250kbps. The MAX1484/MAX1486 driver slewrates are not limited, allowing them to transmit up to12Mbps.The MAX1481/MAX1484/MAX1485/MAX1486 draw only300µA of supply current. The MAX1481 has a low-powershutdown mode that reduces supply current to only0.1µA. All devices operate from a single 5V supply.Drivers are output short-circuit current limited and areprotected against excessive power dissipation bythermal-shutdown circuitry that places the driver outputsinto a high-impedance state. The receiver input has a fail-safefeature that guarantees a logic-high output if theinput is open circuit.ApplicationsBattery-Powered ApplicationsHandheld EquipmentIndustrial Control Local Area NetworksLevel TranslatorsLow-Power RS-422/RS-485 CommunicationsTransceivers for EMI-Sensitive Applications

The MAX148/MAX149 10-bit data-acquisition systems combine an 8-channel multiplexer, high-bandwidthtrack/hold, and serial interface with high conversion speed and low power consumption. They operate from a single +2.7V to +5.25V supply, and sample to 133ksps. Both devices’ analog inputs are software configurable for unipolar/bipolar and single-ended/differential operation.The 4-wire serial interface connects directly to SPI/QSPI™ and MICROWIRE™ devices without external logic. A serial-strobe output allows direct connection to TMS320-family digital signal processors. The MAX148/MAX149 use either the internal clock or an external serial-interface clock to perform successive-approximation analog-to-digital conversions.The MAX149 has an internal 2.5V reference, while the MAX148 requires an external reference. Both parts have a reference-buffer amplifier with a ±1.5% voltage-adjustment range.These devices provide a hard-wired active-low SHDN pin and a software-selectable power-down, and can be programmed to automatically shut down at the end of a conversion. Accessing the serial interface automatically powers up the MAX148/MAX149, and the quick turn-on time allows them to be shut down between all conversions. This technique can cut supply current to under 60µA at reduced sampling rates.The MAX148/MAX149 are available in 20-pin PDIP and 20-pin SSOP packages.For 4-channel versions of these devices, see the MAX1248/MAX1249 data sheet.ApplicationsBattery-Powered InstrumentsData AcquisitionMedical InstrumentsPen DigitizersPortable Data LoggingProcess Control

The MAX148/MAX149 10-bit data-acquisition systems combine an 8-channel multiplexer, high-bandwidthtrack/hold, and serial interface with high conversion speed and low power consumption. They operate from a single +2.7V to +5.25V supply, and sample to 133ksps. Both devices’ analog inputs are software configurable for unipolar/bipolar and single-ended/differential operation.The 4-wire serial interface connects directly to SPI/QSPI™ and MICROWIRE™ devices without external logic. A serial-strobe output allows direct connection to TMS320-family digital signal processors. The MAX148/MAX149 use either the internal clock or an external serial-interface clock to perform successive-approximation analog-to-digital conversions.The MAX149 has an internal 2.5V reference, while the MAX148 requires an external reference. Both parts have a reference-buffer amplifier with a ±1.5% voltage-adjustment range.These devices provide a hard-wired active-low SHDN pin and a software-selectable power-down, and can be programmed to automatically shut down at the end of a conversion. Accessing the serial interface automatically powers up the MAX148/MAX149, and the quick turn-on time allows them to be shut down between all conversions. This technique can cut supply current to under 60µA at reduced sampling rates.The MAX148/MAX149 are available in 20-pin PDIP and 20-pin SSOP packages.For 4-channel versions of these devices, see the MAX1248/MAX1249 data sheet.ApplicationsBattery-Powered InstrumentsData AcquisitionMedical InstrumentsPen DigitizersPortable Data LoggingProcess Control

The MAX148/MAX149 10-bit data-acquisition systems combine an 8-channel multiplexer, high-bandwidthtrack/hold, and serial interface with high conversion speed and low power consumption. They operate from a single +2.7V to +5.25V supply, and sample to 133ksps. Both devices’ analog inputs are software configurable for unipolar/bipolar and single-ended/differential operation.The 4-wire serial interface connects directly to SPI/QSPI™ and MICROWIRE™ devices without external logic. A serial-strobe output allows direct connection to TMS320-family digital signal processors. The MAX148/MAX149 use either the internal clock or an external serial-interface clock to perform successive-approximation analog-to-digital conversions.The MAX149 has an internal 2.5V reference, while the MAX148 requires an external reference. Both parts have a reference-buffer amplifier with a ±1.5% voltage-adjustment range.These devices provide a hard-wired active-low SHDN pin and a software-selectable power-down, and can be programmed to automatically shut down at the end of a conversion. Accessing the serial interface automatically powers up the MAX148/MAX149, and the quick turn-on time allows them to be shut down between all conversions. This technique can cut supply current to under 60µA at reduced sampling rates.The MAX148/MAX149 are available in 20-pin PDIP and 20-pin SSOP packages.For 4-channel versions of these devices, see the MAX1248/MAX1249 data sheet.ApplicationsBattery-Powered InstrumentsData AcquisitionMedical InstrumentsPen DigitizersPortable Data LoggingProcess Control

The MAX157/MAX159 low-power, 10-bit analog-to-digital converters (ADCs) are available in 8-pin µMAX® and DIP packages. Both devices operate with a single +2.7V to +5.25V supply and feature a 7.4µs successive-approximation ADC, automatic power-down, fast wake-up (2.5µs), an on-chip clock, and a high-speed, 3-wire serial interface.Power consumption is only 3.2mW (VDD = +3.6V) at the maximum sampling rate of 108ksps. At slower throughput rates, the 0.2µA automatic shutdown further reduces power consumption.The MAX157 provides 2-channel, single-ended operation and accepts input signals from 0 to VREF. The MAX159 accepts pseudo-differential inputs ranging from 0 to VREF. An external clock accesses data through the 3-wire serial interface, which is SPI™, QSPI™, and MICROWIRE™ compatible.Excellent dynamic performance and low power, combined with ease of use and a small package size, make these converters ideal for battery-powered and data acquisition applications, or for other circuits with demanding power-consumption and space requirements. For pin-compatible 12-bit upgrades, see the MAX144/MAX145 data sheet.ApplicationsBattery-Powered ApplicationsInstrumentationIsolated Data AcquisitionMedical InstrumentsPortable Data LoggingProcess Control MonitoringSystem SupervisionTest Equipment

The MAX1602 DC power-switching IC contains a network of low-resistance MOSFET switches that deliver selectable VCC and VPP voltages to a single CardBus or PC Card host socket. Key features include low-resistance switches, small packaging, soft-switching action, and compliance with PCMCIA specifications for 3V/5V switching. 3.3V-only power switching for fast, 32-bit CardBus applications is supported in two ways: low-resistance 3.3V switches allow high 3.3V load currents (up to 1A); and completely independent internal charge pumps let the 3.3V switch operate normally, even if the +5V and +12V supplies are disconnected or turned off to conserve power. The internal charge pumps are regulating types that draw reduced input current when the VCC switches are static. Power consumption is automatically reduced to 11µA max when the outputs are high-Z or GND.Other key features include guaranteed specifications for output current limit level, and guaranteed specifications for output rise/fall times (in compliance with PCMCIA specifications). Reliability is enhanced by thermal-overload protection, accurate current limiting, an overcurrent-fault flag output, and undervoltage lock-outs. The CMOS/TTL-logic interface is flexible, and can tolerate logic input levels in excess of the positive supply rail.The MAX1602 fits a complete CardBus/PCMCIA switch into a space-saving, 16-pin QSOP package.ApplicationsData LoggingDocking StationsHandy TerminalsPCMCIA Read/Write Drives

The MAX1623 switch-mode buck regulator with synchronous rectification provides local CPU and bus-termination power in notebook and desktop computers. An internal 55mΩ (typ), 3A PMOS power switch and 60mΩ (typ), 3A NMOS synchronous-rectifier switch deliver continuous load currents up to 3A from a 5V supply with 95% typical efficiency. Output accuracy is ±1%, including line and load regulation.The MAX1623 features constant-off-time, current-mode pulse-width-modulation (PWM) control with switching frequencies as high as 350kHz. An external resistor at the TOFF pin sets the off-time, allowing optimum design flexibility in terms of switching frequency, output switching noise, and inductor size. This device is available in a space-saving 20-pin SSOP package.Applications5V to 3.3V ConversionCPU Daughter Card SupplyDesktop Computer Bus-Termination SupplyDSP SupplyNotebook Computer CPU I/O Supply

The MAX1626/MAX1627 step-down DC-DC controllers operate over a 2.6V to 16.5V input voltage range. The controllers deliver load current from 1mA to more than 2A. The MAX1626 has pin-selectable 3.3V and 5V outputs. The MAX1627 supports adjustable outputs from 1.3V to 16V.A unique current-limited, pulse-frequency-modulation (PFM) control scheme operates up to 100% duty cycle, resulting in very low dropout voltage. This control scheme eliminates minimum load requirements and reduces supply current under light loads to 90µA (versus 2mA to 10mA for common pulse-width modulation controllers).The devices are available in a 8-pin SOIC package (-40°C to +85°C) and dice (0°C to +70°C).Applications5V to 3.3V Green PC ApplicationsBattery-Powered ApplicationsHandheld ComputersHigh-Efficiency Step-Down RegulationLow-Cost Notebook Computer SuppliesMinimum Component DC-DC ConvertersPCMCIA Power SuppliesPDAs and Other Handheld DevicesPortable Terminals

The MAX1649/MAX1651 BiCMOS, step-down, DC-DC switching controllers provide high efficiency over loads ranging from 1mA to more than 2.5A. A unique, current-limited pulse-frequency-modulated (PFM) control scheme gives these devices the benefits of pulse-width-modulation (PWM) converters (high efficiency at heavy loads), while using only 100µA of supply current (vs. 2mA to 10mA for PWM converters). Dropout performance down to 300mV is provided by a high switch duty cycle (96.5%) and a low current-sense threshold (110mV).A high switching frequency (up to 300kHz) allows these devices to use miniature external components.The MAX1649/MAX1651 have dropout voltages less than 0.3V at 500mA and accept input voltages up to 16V. Output voltages are preset at 5V (MAX1649), or 3.3V (MAX1651). They can also be adjusted to any voltage from 1.5V to the input voltage by using two resistors.These step-down controllers drive external P-channel MOSFETs at loads greater than 12.5W. If less power is required, use the MAX639/MAX640/MAX653 step-down converters with on-chip FETs, which allow up to a 225mA load current.Applications5V to 3.3V Green PC ApplicationsBattery-Powered ApplicationsHigh-Efficiency Step-Down RegulationPDAs

The MAX1673 charge-pump inverter provides a low-cost, compact means of generating a regulated negative output from a positive input at up to 125mA. It requires only three small capacitors, and only two resistors to set its output voltage. The input range is 2V to 5.5V. The regulated output can be set from 0V to -VIN in Skip regulation mode or -1.5V to -VIN in Linear (LIN) regulation mode.In Skip mode, the MAX1673 regulates by varying its switching frequency as a function of load current. This On-Demand™ switching gives the MAX1673 two advantages: very small capacitors and very low quiescent supply current. At heavy loads, it transfers energy from the input to the output by switching at up to 350kHz. It switches more slowly at light loads, using only 35µA quiescent supply current.In Linear mode, the MAX1673 switches at a constant 350kHz at all loads and regulates by controlling the current-path resistance. This provides constant-frequency ripple, which is easily filtered for low-noise applications.This device also features a 1µA logic-controlled shutdown mode and is available in a standard 8-pin SO package. For a device that delivers about 10mA and fits in a smaller package, refer to the MAX868.ApplicationsAnalog Signal ProcessingCamcordersDigital Still CamerasHard Disk DriveMeasurement InstrumentationModems

The LTC6258/LTC6259/LTC6260 are single/dual/quad operational amplifiers with low noise, low power, low supply voltage, and rail-to-rail inputs and outputs. They are unity gain stable with or without capacitive loads. They feature 1.3MHz gain-bandwidth product, 0.24V/μs slew rate while consuming only 20μA of supply current per amplifier operating on supply voltages ranging from 1.8V to 5.25V. The combination of low supply current, low supply voltage, high gain bandwidth product and low noise makes the LTC6258 family unique among rail-to-rail input/output op amps with similar supply current. These operational amplifiers are ideal for power efficient applications.For applications that require power-down, the LTC6258 in 2mm × 2mm DFN and LTC6259 MS10 packages respectively offer shutdown which reduces the current consumption to 7μA maximum.The LTC6258 family can be used as plug-in replacements for many commercially available op amps to reduce power and improve input/output range and performance.Applications Micropower Active Filters Portable Instrumentation Battery or Solar Powered Systems Automotive Electronics

The LTC6954 is a family of very low phase noise clock distribution parts. Each part has three outputs and each output has an individually programmable frequency divider and delay. There are four members of the family, differing in their output logic signal type:LTC6954-1: Three LVPECL outputsLTC6954-2: Two LVPECL and one LVDS/CMOS outputsLTC6954-3: One LVPECL and two LVDS/CMOS outputsLTC6954-4: Three LVDS/CMOS outputsEach output is individually programmable to divide the input frequency by any integer from 1 to 63, and to delay each output by 0 to 63 input clock cycles. The output duty cycle is always 50%, regardless of the divide number. The LVDS/CMOS outputs are jumper selectable via the OUTxSEL pins to provide either an LVDS logic output or a CMOS logic output.The LTC6954 also features Linear Technology’s EZSync system for perfect clock synchronization and alignment every time.All device settings are controlled through an SPI-compatible serial port.Applications Clocking High Speed, High Resolution ADCs, DACs and Data Acquisition Systems Low Jitter Clock Distribution