Texas Instruments
Texas Instruments SN75C189ADR, RS232 receiver, 0/4 drivers/receivers, 970 mV hysteresis, 4.5V–6V supply, 0°C–70°C, 14-SOIC
MOQ 1 · Tape & Reel (TR); Cut Tape (CT) · RoHS · EIA-481 · DAP/DDP · T/T
| Parameter / Attribute | Specification / Value |
|---|---|
| Type | Receiver |
| Mounting | Surface Mount |
| Supply voltage | 4.5V ~ 6V |
| Protocol | RS232 |
| Operating temperature | 0°C ~ 70°C |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| Case | 14-SOIC (0.154\", 3.90mm Width) |
| Receiver hysteresis | 970 mV |
| Number of drivers (Receivers) | 0/4 |
The SN75C189ADR is a quad RS232 receiver in a 14-SOIC package. Its 970 mV of hysteresis filters noise on long cable runs — a common source of false bit edges in serial links. With 0 drivers and 4 receivers, it is a pure receive-side device, not a transceiver.
Operates from a single 4.5V to 6V rail, which maps directly to a 5V ±10% supply — no extra regulator needed.
