The ST202E/ST232E are a 2 driver 2 receiver devices designed for RS-232 and V.28 communications in harsh environments. Each transmitter output and receiver input is protected against ± 15 kV electrostatic discharge (ESD) shocks. The drivers meet all EIA/TIA-232E and CCITT V.28 specifications at data rates up to 230 kbps, when loaded in accordance with the EIA/TIA-232E specification. The ST202E/232E use a single 5 V supply voltage. The ST232E operates with four 1 µF capacitors, while the ST202E operates with four 0.1 µF capacitors, further reducing cost and board space.
The ST202E and ST232E families are 2‑driver/2‑receiver RS‑232 transceivers with 15 kV ESD protection, a single 5 V supply, and operation up to 230 kbps. They are designed for harsh environments and comply with EIA/TIA‑232E and CCITT V.28 specifications.
The document includes pin‑out diagrams, absolute maximum ratings, electrical characteristics for both transmitters and receivers, typical application circuits, performance graphs, package data, and revision history, allowing designers to integrate the devices into their systems.
| ESD protection (Human Body Model) | 15 kV |
|---|---|
| Supply voltage range | -0.3 V to 6 V |
| Operating temperature range | -40 °C to 85 °C |
| Data rate | up to 230 kbps |
| Input voltage range (transmitter) | -0.3 V to (V+ + 0.3) V |
The device provides 15 kV ESD protection for the human‑body model.
It operates from a single 5 V supply voltage.
The specified operating temperature range is –40 °C to 85 °C.
The transceiver supports data rates up to 230 kbps.