
Union Semiconductor International Limited
UM3232EESE is a lower-speed RS232 2/2 candidate in 16-SOIC.
MAX3232ESE+T is a 1Mbps RS232 2/2 transceiver in 16-SOIC. The listed alternatives need FAE review before use.
kept parts are below 1Mbps
16-SOIC matches
RS232 protocol remains
no product URLs given
No verified pin-compatible replacement is proven by the provided fields.
Review ADM3202ARNZ first for same RS232 2/2 role, but validate the lower 460kbps limit.
Pinout and data-rate compatibility are not fully proven.

Union Semiconductor International Limited
UM3232EESE is a lower-speed RS232 2/2 candidate in 16-SOIC.
| Feature / factor | MAX3232ESE+T | ADM3202ARNZ | UM3232EESE | Alt 3 | Compatibility / risk |
|---|---|---|---|---|---|
| Interface | 1Mbps | 460kbps | 250kbps | 460kbps / 250kbps — speed derating; UM3232EESE: speed derating | |
| Voltage | 3.0-5.5V | 3-5.5V | 3-5.5V | 3-5.5V — supply range fits; UM3232EESE: supply range fits | |
| Package | 16-SOIC | 16-SOIC | - | 16-SOIC — same body class | |
| Pinout | MAX3232ESE+T | not provided | not provided | not provided — needs datasheet check; UM3232EESE: needs datasheet check | |
| Temperature | -40 to 85C | - | -40 to 85C | -40 to 85C — same range |
ADM3202ARNZ is the closest kept candidate, but it is only 460kbps and needs pinout review.