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LTC1690 Fiches technique(PDF) 1 Page - Linear Technology |
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LTC1690 Fiches technique(HTML) 1 Page - Linear Technology |
1 / 12 page 1 LTC1690 Differential Driver and Receiver Pair with Fail-Safe Receiver Output , LTC and LT are registered trademarks of Linear Technology Corporation. The LTC ®1690 is a low power receiver/driver pair that is compatible 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 components 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 shut- down circuit which forces the driver outputs into a high impedance state. The LTC1690 is fully specified over the commercial and industrial temperature ranges. The LTC1690 is available in 8-Pin SO, MSOP and PDIP packages. s Battery-Powered RS485/RS422 Applications s Low Power RS485/RS422 Transceiver s Level Translator s Line Repeater 120 Ω 3 5 6 D1 120 Ω 2 8 7 R2 DRIVER LTC1690 LTC1690 RECEIVER 120 Ω 2 7 8 Y1 Z1 B1 A1 A2 B2 Z2 Y2 R1 120 Ω 3 6 5 D2 RECEIVER DRIVER 1690 TA01 s No Damage or Latchup to ±15kV ESD (Human Body Model), IEC1000-4-2 Level 4 ( ±8kV) Contact and Level 3 ( ±8kV) Air Discharge s Guaranteed High Receiver Output State for Floating, Shorted or Terminated Inputs with No Signal Present s Drives Low Cost Residential Telephone Wires s ICC = 600µA Max with No Load s Single 5V Supply s –7V to 12V Common Mode Range Permits ±7V Ground Difference Between Devices on the Data Line s Power-Up/Down Glitch-Free Driver Outputs Permit Live Insertion or Removal of Transceiver s Driver Maintains High Impedance with the Power Off s Up to 32 Transceivers on the Bus s Pin Compatible with the SN75179 and LTC490 s Available in SO, MSOP and PDIP Packages D1 B2 A2 R2 1690 TA01a APPLICATIO S FEATURES TYPICAL APPLICATIO DESCRIPTIO Driving a 1000 Foot STP Cable |
Numéro de pièce similaire - LTC1690 |
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Description similaire - LTC1690 |
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