Micropower Precision Triple Supply Monitor Features: Simultaneously Monitors Three Supplies LTC1326: 5V, 3.3V and ADJ LTC1326-2.5: 2.5V, 3.3V and ADJ Guaranteed Threshold Accuracy: ±0.75% Low Supply Current: 20µA Internal Reset Time Delay: 200ms Manual Push-Button Reset Input Active Low and Active High Reset Outputs Active Low “Soft” Reset Output Power Supply Glitch Immunity Guaranteed RESET for VCC3 ≥ 1V or VCC5 ≥ 1V or VCC25 ≥ 1V 8-Pin SO and MSOP Packages

Micropower Precision Triple Supply Monitor Features: Simultaneously Monitors Three Supplies LTC1326: 5V, 3.3V and ADJ LTC1326-2.5: 2.5V, 3.3V and ADJ Guaranteed Threshold Accuracy: ±0.75% Low Supply Current: 20µA Internal Reset Time Delay: 200ms Manual Push-Button Reset Input Active Low and Active High Reset Outputs Active Low “Soft” Reset Output Power Supply Glitch Immunity Guaranteed RESET for VCC3 ≥ 1V or VCC5 ≥ 1V or VCC25 ≥ 1V 8-Pin SO and MSOP Packages

RS232/EIA562/RS485 Transceivers Features: LTC1321: 2-EIA562/RS232 Transceivers/2-RS485 Transceivers LTC1322: 4-EIA562/RS232 Transceivers/2-RS485 Transceivers LTC1335: 4-EIA562 Transceivers/2-RS485 Transceivers with OE LTC1321/LTC1322 Have the Same Pinout as SP301/SP302 LTC1335 Features Receiver Three-State Outputs Low Supply Current: 1mA Typical 15µA Supply Current in Shutdown 120kBaud in EIA/TIA-562 or RS232 Mode 10MBaud in RS485/RS422 Mode Self-Testing Capability in Loopback Mode Power-Up/Down Glitch-Free Outputs Driver Maintains High Impedance in Three-State, Shutdown or With Power Off Thermal Shutdown Protection I/O Lines Can Withstand ±25V Withstands Repeated 10kV ESD Pulses

RS232/EIA562/RS485 Transceivers Features: LTC1321: 2-EIA562/RS232 Transceivers/2-RS485 Transceivers LTC1322: 4-EIA562/RS232 Transceivers/2-RS485 Transceivers LTC1335: 4-EIA562 Transceivers/2-RS485 Transceivers with OE LTC1321/LTC1322 Have the Same Pinout as SP301/SP302 LTC1335 Features Receiver Three-State Outputs Low Supply Current: 1mA Typical 15µA Supply Current in Shutdown 120kBaud in EIA/TIA-562 or RS232 Mode 10MBaud in RS485/RS422 Mode Self-Testing Capability in Loopback Mode Power-Up/Down Glitch-Free Outputs Driver Maintains High Impedance in Three-State, Shutdown or With Power Off Thermal Shutdown Protection I/O Lines Can Withstand ±25V Withstands Repeated 10kV ESD Pulses

RS232/EIA562/RS485 Transceivers Features: LTC1321: 2-EIA562/RS232 Transceivers/2-RS485 Transceivers LTC1322: 4-EIA562/RS232 Transceivers/2-RS485 Transceivers LTC1335: 4-EIA562 Transceivers/2-RS485 Transceivers with OE LTC1321/LTC1322 Have the Same Pinout as SP301/SP302 LTC1335 Features Receiver Three-State Outputs Low Supply Current: 1mA Typical 15µA Supply Current in Shutdown 120kBaud in EIA/TIA-562 or RS232 Mode 10MBaud in RS485/RS422 Mode Self-Testing Capability in Loopback Mode Power-Up/Down Glitch-Free Outputs Driver Maintains High Impedance in Three-State, Shutdown or With Power Off Thermal Shutdown Protection I/O Lines Can Withstand ±25V Withstands Repeated 10kV ESD Pulses

RS232/EIA562/RS485 Transceivers Features: LTC1321: 2-EIA562/RS232 Transceivers/2-RS485 Transceivers LTC1322: 4-EIA562/RS232 Transceivers/2-RS485 Transceivers LTC1335: 4-EIA562 Transceivers/2-RS485 Transceivers with OE LTC1321/LTC1322 Have the Same Pinout as SP301/SP302 LTC1335 Features Receiver Three-State Outputs Low Supply Current: 1mA Typical 15µA Supply Current in Shutdown 120kBaud in EIA/TIA-562 or RS232 Mode 10MBaud in RS485/RS422 Mode Self-Testing Capability in Loopback Mode Power-Up/Down Glitch-Free Outputs Driver Maintains High Impedance in Three-State, Shutdown or With Power Off Thermal Shutdown Protection I/O Lines Can Withstand ±25V Withstands Repeated 10kV ESD Pulses

5V Low Power RS232 3-Driver/5-Receiver Transceiver Features: Low Supply Current: 300µA ESD Protection: Over ±10kV 1µA Supply Current in Shutdown Operates from a Single 5V Supply Uses Small Capacitors: 0.1µF Operates to 120k Baud Three-State Outputs Are High Impedance When Off Output Overvoltage Does Not Force Current Back into Supplies RS232 I/O Lines Can Be Forced to ±25V without Damage Pin Compatible with LT®1137A and LT1237 Flowthrough Architecture

5V Low Power RS232 5-Driver/3-Receiver Transceiver Features: Low Supply Current: 500µA 0.2µA Supply Current in SHUTDOWN 50µA Supply Current in RECEIVER ALIVE Mode ESD Protection Over ±10kV Operates from a Single 5V Supply Uses Small Capacitors: 0.1µF Operates to 120k Baud Three-State Outputs Are High Impedance When Off Output Overvoltage Does Not Force Current Back into Supplies RS232 I/O Lines Can Be Forced to ±25V Without Damage Flowthrough Architecture

5V Low Power RS232 5-Driver/3-Receiver Transceiver Features: Low Supply Current: 500µA 0.2µA Supply Current in SHUTDOWN 50µA Supply Current in RECEIVER ALIVE Mode ESD Protection Over ±10kV Operates from a Single 5V Supply Uses Small Capacitors: 0.1µF Operates to 120k Baud Three-State Outputs Are High Impedance When Off Output Overvoltage Does Not Force Current Back into Supplies RS232 I/O Lines Can Be Forced to ±25V Without Damage Flowthrough Architecture

Software-Selectable Multiprotocol Transceiver Features: Software-Selectable Transceiver Supports: RS232, RS449, EIA-530, EIA-530-A, V.35, V.36, X.21 NET1 and NET2 Compliant Software-Selectable Cable Termination Using the LTC1344 4-Driver/4-Receiver Configuration Provides a Complete 2-Chip DTE or DCE Port Operates from Single 5V Supply Internal Echoed Clock and Loop-Back Logic

Software-Selectable Cable Terminator Features: Software-Selectable Cable Termination for: RS232 (V.28) RS423 (V.10) RS422 (V.11) RS485 RS449 EIA530 EIA530-A V.35 V.36 X.21 Outputs Won’t Load the Line with Power Off

Single Supply V.35 Transceiver Features: Single Chip Provides All V.35 Differential Clock and Data Signals Operates From Single 5V Supply Software Selectable DTE or DCE Configuration Transmitters and Receivers Will Withstand Repeated ±10kV ESD Pulses Shutdown Mode Reduces Icc to 1µA Typ 10MBaud Transmission Rate Transmitter Maintains High Impedance When Disabled, Shut Down, or with Power Off Meets CCITT V.35 Specification Transmitters are Short-Circuit Protected

Single Supply V.35 Transceiver Features: Single Chip Provides All V.35 Differential Clock and Data Signals Operates From Single 5V Supply Software Selectable DTE or DCE Configuration Transmitters and Receivers Will Withstand Repeated ±10kV ESD Pulses Shutdown Mode Reduces Icc to 1µA Typ 10MBaud Transmission Rate Transmitter Maintains High Impedance When Disabled, Shut Down, or with Power Off Meets CCITT V.35 Specification Transmitters are Short-Circuit Protected

3.3V/5V Low Power RS232 3-Driver/5-Receiver Transceiver Features: Low Supply Current: 600µA at 3.3V Supply Current in Shutdown: 0.2µA Supply Current in Receiver Alive Mode: 15µA ESD Protection over ±10kV Operates from a Single 3V to 5.5V Supply Operates to 120kBaud with 0.1µF Flying Capacitors Three-State Outputs Are High Impedance When Off Output Overvoltage Does Not Force Current Back into Supplies RS232 I/O Lines Can Be Forced to ±25V Without Damage Flowthrough Architecture

5V Low Power RS232 3-Driver/5-Receiver Transceiver with 2 Receivers Active in Shutdown Features: Low Supply Current: 300µA Two Receivers Kept Alive in Shutdown ESD Protection Over ±10kV Operates from a Single 5V Supply Uses Small Capacitors: 0.1µF Operates to 120kBaud Three-State Outputs Are High Impedance When Off Output Overvoltage Does Not Force Current Back into Supplies RS232 I/O Lines Can Be Forced to ±25V Without Damage Pin Compatible with LT1137A and LT1237 Flowthrough Architecture

3.3V Low Power EIA/TIA-562 3-Driver/5-Receiver Transceiver Features: Low Supply Current: 300µA Receivers 4 and 5 Kept Alive in SHUTDOWN: 35µA ESD Protection: ±10kV Operates from a Single 3.3V Supply Uses Small Capacitors: 0.1µF Operates to 120kBaud Three-State Outputs are High Impedance When Off Output Overvoltage Does Not Force Current Back into Supplies EIA/TIA-562 I/O Lines Can Be Forced to ±25V Without Damage Flowthrough Architecture

3.3V Low Power EIA/TIA-562 3-Driver/5-Receiver Transceiver Features: Low Supply Current: 300µA Receivers 4 and 5 Kept Alive in SHUTDOWN: 35µA ESD Protection: ±10kV Operates from a Single 3.3V Supply Uses Small Capacitors: 0.1µF Operates to 120kBaud Three-State Outputs are High Impedance When Off Output Overvoltage Does Not Force Current Back into Supplies EIA/TIA-562 I/O Lines Can Be Forced to ±25V Without Damage Flowthrough Architecture

3.3V Low Power EIA/TIA-562 3-Driver/5-Receiver Transceiver Features: Low Supply Current: 300µA Receivers 4 and 5 Kept Alive in SHUTDOWN: 35µA ESD Protection: ±10kV Operates from a Single 3.3V Supply Uses Small Capacitors: 0.1µF Operates to 120kBaud Three-State Outputs are High Impedance When Off Output Overvoltage Does Not Force Current Back into Supplies EIA/TIA-562 I/O Lines Can Be Forced to ±25V Without Damage Flowthrough Architecture

Single-Ended 8-Channel/Differential 4-Channel Analog Multiplexer with SMBus Interface Features: Micropower Operation: Supply Current = 20µA Max 2-Wire SMBus Interface Single 2.7V to ±5V Supply Operation Expandable to 32 Single or 16 Differential Channels Guaranteed Break-Before-Make Low RON: 35Ω Single Ended/70Ω Differential Low Charge Injection: 20pC Max Low Leakage: ±5nA Max Available in 16-Lead SO and GN Packages

Single-Ended 8-Channel/Differential 4-Channel Analog Multiplexer with SMBus Interface Features: Micropower Operation: Supply Current = 20µA Max 2-Wire SMBus Interface Single 2.7V to ±5V Supply Operation Expandable to 32 Single or 16 Differential Channels Guaranteed Break-Before-Make Low RON: 35Ω Single Ended/70Ω Differential Low Charge Injection: 20pC Max Low Leakage: ±5nA Max Available in 16-Lead SO and GN Packages