Product Summary
The ADM485ANZ is a differential line transceiver suitable for high speed bidirectional data communication on multipoint bus transmission lines. It is designed for balanced data transmission and complies with EIA standards RS-485 and RS-422. The part contains a differential line driver and a differential line receiver. Both the driver and the receiver can be enabled independently. When disabled, the outputs are three-stated. The ADM485ANZ operates from a single 5 V power supply. Excessive power dissipation caused by bus contention or by output shorting is prevented by a thermal shutdown circuit. If during fault conditions, a significant temperature increase is detected in the internal driver circuitry, this feature forces the driver output into a high impedance state.
Parametrics
ADM485ANZ absolute maximum ratings: (1)VCC: -0.3 V to +7 V; (2)Driver Input (DI): -0.3 V to VCC + 0.3 V ; (3)Control Inputs (DE, RE): -0.3 V to VCC + 0.3 V ; (4)Receiver Inputs (A, B): -9 V to +14 V; (5)Driver Outputs (A, B): -9 V to +14 V ; (6)Receiver Output: -0.5 V to VCC + 0.5 V; (7)Lead Temperature (Soldering, 10 sec): 300℃.
Features
ADM485ANZ features: (1)Meets EIA RS-485 standard ; (2)5 Mbps data rate ; (3)Single 5 V supply ; (4)–7 V to +12 V bus common-mode range ; (5)High speed, low power BiCMOS ; (6)Thermal shutdown protection ; (7)Short-circuit protection ; (8)Driver propagation delay: 10 ns typical ; (9)Receiver propagation delay: 15 ns typical ; (10)High-Z outputs with power off.
Diagrams
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ADM485ANZ |
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