Texas Instruments
Texas Instruments SN65HVD21MDREP, RS422/RS485 transceiver, half-duplex, 5Mbps, 1/1 driver/receiver, 130 mV hysteresis, 4.5V~5.5V supply, -55°C~125°C, 8-SOIC.
MOQ 1 · Tape & Reel (TR); Cut Tape (CT) · RoHS · EIA-481 · DAP/DDP · T/T
| Parameter / Attribute | Specification / Value |
|---|---|
| Type | Transceiver |
| Mounting | Surface Mount |
| Supply voltage | 4.5V ~ 5.5V |
| Protocol | RS422, RS485 |
| Operating temperature | -55°C~125°C |
| Duplex | Half |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| Data rate | 5Mbps |
| Case | 8-SOIC (0.154\", 3.90mm Width) |
| Receiver hysteresis | 130 mV |
| Number of drivers (Receivers) | 1/1 |
At 5 Mbps the SN65HVD21MDREP handles the common RS-485 baud rates used in motor drives, PLC links, and instrumentation backplanes. The 130 mV hysteresis on the receiver input rejects noise on long twisted-pair cables better than the 50 mV typical of older transceivers, reducing bit errors in electrically noisy environments like factory floors or vehicle power trains.