(China (Mainland))
Product Summary
The DS485M is a low-power transceiver for RS-485 and RS-422 communication. The device contains one driver and one receiver. The drivers slew rate allows for operation up to 2.5 Mbps (see Applications Information section). The DS485M draws 200 μA of supply current when unloaded or fully loaded with the driver disabled and operates from a single +5V supply.
Parametrics
DS485M absolute maximum ratings: (1)Supply Voltage (VCC): +12V; (2)Enable Input Voltage (RE, DE): -0.5V to (VCC + 0.5V); (3)Driver Input Voltage (DI): -0.5V to (VCC + 0.5V); (4)Driver Output Voltage (A, B): -14V to +14V; (5)Receiver Input Voltage (A, B): -14V to +14V; (6)Receiver Output Voltage (RO): -0.5V to (VCC + 0.5V); (7)Storage Temperature Range: -65℃ to +150℃.
Features
DS485M features: (1)Meets TIA/EIA RS-485 multipoint standard; (2)Guaranteed full load output voltage (V OD3); (3)nLow quiescent current: 200 μA typ; (4)-7V to +12V common-mode input voltage range; (5)TRI-STATE outputs on driver and receiver; (6)AC performance: Driver transition time: 25 ns typ; Driver propagation delay: 40 ns typ; Driver skew: 1 ns typ; Receiver propagation delay: 200 ns typ; Receiver skew: 20 ns typ; (7)Half-duplex flow through pinout; (8)Operates from a single 5V supply; (9)Allows up to 32 transceivers on the bus; (10)Current-limiting and thermal shutdown for driver overload protection; (11)Industrial temperature range operation; (12)Pin and functional compatible with MAX485 and LTC485.
Diagrams
| Image | Part No | Mfg | Description |  |
Pricing (USD) |
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 DS485M |
National Semiconductor (TI) |
Bus Receivers |
Data Sheet |
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DS485M/NOPB |
National Semiconductor (TI) |
Bus Receivers |
Data Sheet |
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DS485MX |
National Semiconductor (TI) |
Bus Receivers |
Data Sheet |
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DS485MX/NOPB |
National Semiconductor (TI) |
Bus Receivers |
Data Sheet |
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