
Texas Instruments
Pin-compatible upgrade from the same manufacturer with a faster data rate and matching industrial temperature range.
TRS3232EIDR is an industrial-grade RS-232 transceiver from Texas Instruments. This page reviews potential replacements, including pin-compatible upgrades and functional alternatives with different performance characteristics.
All reviewed candidates use the same SOIC-16 package, but pinout should be confirmed for non-TI parts.
Some alternatives have lower temperature or data rate specs. Always check datasheet limits.
The 3232 family is widely multi-sourced, providing many options.
SN65C3232EDR from Texas Instruments is a strong candidate for direct replacement, matching the package, pinout, and key electrical specifications.
SN65C3232EDR is the recommended upgrade path, offering full parametric compliance and a higher data rate.
The main risk when considering other alternatives is a mismatch in operating temperature range or a lower data rate.

Texas Instruments
Pin-compatible upgrade from the same manufacturer with a faster data rate and matching industrial temperature range.
| Feature / factor | TRS3232EIDR | SN65C3232EDR | MAX3232CDR | ILX3232DT | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SOIC-16 | SOIC-16 | SOIC-16 | SOIC-16 | SOIC-16 — Same package and pin count.; MAX3232CDR: Same package and pin count.; ILX3232DT: Same package and pin count. |
| Data Rate | 250 kbps | 1 Mbit/s | 250 kbit/s | 120 Kbps | 1 Mbit/s / 250 kbit/s / 120 Kbps — Candidate is faster, generally backward compatible.; MAX3232CDR: Data rate matches.; ILX3232DT: Data rate is lower than target. |
| Temperature | -40°C to 85°C | -40°C to 85°C | 0°C to 70°C | -40°C to 85°C | -40°C to 85°C / 0°C to 70°C — Industrial temperature range matches.; MAX3232CDR: Commercial temp range is narrower than target's industrial range.; ILX3232DT: Industrial temperature range matches. |
| Voltage | 3V to 5.5V | 3V to 5.5V | - | - | 3V to 5.5V — Supply voltage range matches. |
| Manufacturer | Texas Instruments | Texas Instruments | Tokmas | - | Texas Instruments / Tokmas — Same manufacturer as target.; MAX3232CDR: Cross-vendor alternative. |
SN65C3232EDR from Texas Instruments is a strong candidate. It is a pin-compatible design with an upgraded 1Mbps data rate and the same industrial temperature range.