LTC1690 Datasheet | Linear Technology

LTC1690 Differential Driver and Receiver Pair with Fail-Safe Receiver Output Features s DESCRIPTIO s s s s s s s s s s No Damage or Latchup to ±15k V ESD (Human Body Model), IEC1000-4-2 Level 4 (±8k V) Contact and Level 3 (± 8k V) Air Discharge Guaranteed High Receiver Output State for Floating, Shorted or Terminated Inputs with No Signal Present Drives Low Cost Residential Telephone Wires ICC = 600µA Max with No Load Single 5V Supply - 7V to 12V mon Mode Range Permits ±7V Ground Difference Between Devices on the Data Line Power-Up/Down Glitch-Free Driver Outputs Permit Live Insertion or Removal of Transceiver Driver Maintains High Impedance with the Power Off Up to 32 Transceivers on the Bus Pin patible with the SN75179 and LTC490 Available in SO, MSOP and PDIP Packages The LTC®1690 is a low power receiver/driver pair that is patible with the requirements of RS485 and RS422. The receiver offers a fail-safe feature that guarantees a high receiver output state when the inputs are left open, shorted together or terminated with no signal present. No external ponents are required to ensure the high receiver output state. Separate driver output and receiver input pins allow full duplex operation. Excessive power dissipation caused by bus contention or faults is prevented by a thermal shutdown circuit which forces the driver outputs into a high impedance state. The LTC1690 is fully specified over the mercial and industrial temperature ranges. The LTC1690 is available in 8-Pin SO, MSOP and PDIP packages. , LTC and LT are registered trademarks of Linear Technology Corporation. U APPLICATIO S s s s s Battery-Powered RS485/RS422 Applications Low Power RS485/RS422 Transceiver Level Translator Line Repeater TYPICAL APPLICATIO LTC1690 5 D1 3 DRIVER 6 Z1 Y1 120Ω LTC1690 A2 120Ω 7 B2 8 RECEIVER 2 R2 B2 D1 7 R1 2 RECEIVER 8 B1 120Ω A1 Z2 120Ω 6 5 DRIVER 3 D2 Y2 1690 TA01 Driving a 1000 Foot STP Cable A2 R2 1690 TA01a ABSOLUTE MAXIMUM...