LTC491CS
Differential driver and receiver pair
Produced by LINEAR original factory, using SOP-14 package, batch number 94+, Microchip Centennial Integrated Circuit Warehouse is currently in stock
peculiarity
- Low power consumption: ICC=300μA typical
- Designed for RS485 or RS422 applications
- Single 5V power supply
- 7V to 12V bus common-mode range license ± differences on ground buses between 7V devices
- Thermal shutdown protection
- Power-Up/Down trouble-free drive output licenses, live inserting or removing packages
- Drive maintenance in three countries or high impedance in power outages
- The combined impedance of one driver and receiver allows up to 32 transceivers on the bus
- 70mV typical input hysteresis
- A typical drive transmission delay of 28ns with an offset of 5ns for 2.5MB operation
- Pin compatible with SN75180
- Available in 14-pin PDIP and SO packages
description
The LTC ® 491 is a low power differential bus/line transceiver designed for point-to-multipoint data transmission and extended common-mode range (-7V to 12V) standard RS485 applications. It also meets the requirements of RS-422.
The CMOS design provides a significant reduction in power consumption over its bipolar counterpart without sacrificing robustness to overload or ESD damage.
Driver and receiver tri-state output driver with high impedance over the entire common-mode range. Excessive power dissipation due to bus contention or faults prevents thermal shutdown circuitry from forcing the driver output into a high impedance state.
The receiver has a fail-safe feature that guarantees a high output state when the input is floating.
AC and DC specifications are guaranteed from 0°C to 70°C and 4.75V to 5.25V supply voltage ranges.