Product Summary

The ST485BDR is a low power transceiver for RS-485 and RS-422 communication. Each part contains one driver and one receiver. TheST485BDR is designed for bi-directional data communications on multipoint bus transmission line (half-duplex applciations).

Parametrics

ST485BDR absolute maximum ratings: (1)VCC Supply Voltage: 7 V; (2)VI Control Input Voltage (RE, DE): -0.5 to (VCC + 0.5)V; (3)VDI Driver Input Voltage (DI): -0.5 to (VCC + 0.5)V; (4)VDO Driver Output Voltage (A, B): ± 14 V; (5)VRI Receiver Input Voltage (A, B): ± 14 V; (6)VRO Receiver Output Voltage (RO): -0.5 to (VCC + 0.5)V.

Features

ST485BDR features: (1)Low quiescent current: 300mA; (2)Designed for RS-485 interface application -7V to 12V common mode input voltage range; (3)Driver maintains high impedance in 3-state or with the power OFF; (4)70mV tipycal input hysteresis; (5)30ns propagation delay, 5ns skew; (6)Operate from a single 5V supply; (7)Current limiting and thermal shutdown for driver overload protection; (8)Allows up to 64 transceivers on the bus.

Diagrams

ST485BDR pin connection

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
ST485BDR
ST485BDR

STMicroelectronics

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Data Sheet

0-1: $0.73
1-10: $0.59
10-100: $0.51
100-250: $0.46
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(USD)
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