TPT487L1-SO1R
3PEAK
Needs validationlow risk
A strong functional match in the same package with identical data rate and supply voltage range.
Best Alternatives to UM3483EESA
UM3483EESA is a slew-rate limited 500kbps RS-485 transceiver in an SOP-8 package. Finding a replacement requires matching the package, supply voltage, and especially the low data rate to ensure EMI compatibility.
AI replacement insight
Electrical riskmedium
Using a non-slew-rate limited part can increase EMI.
Package risklow
Multiple candidates exist in the same SOP-8 package, but pinout must be checked.
Can it be replaced directly?
No confirmed pin-to-pin replacement is available without a datasheet review, but TPT487L1-SO1R is a very strong candidate for form, fit, and function.
Best replacement path
TPT487L1-SO1R is the most promising candidate, matching the package, voltage, and critical 500kbps data rate. Pinout verification is the final step.
Main risk
The main risk is substituting with a high-speed (e.g., 10Mbps) transceiver, which can cause EMI issues in a system designed for a slew-rate limited part.
Recommended alternatives
3Alternative comparison matrix
| Feature / factor | UM3483EESA | TPT487L1-SO1R | HT3485EARZ | MAX3485ED | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SOP-8 | SOP-8 | SOP-8 | SOP-8 | SOP-8 — Same package and pin count.; HT3485EARZ: Same package and pin count.; MAX3485ED: Same package and pin count. |
| Interface | RS-485 Half-Duplex | RS-485 Half-Duplex | RS-485, RS-422 | RS-485, RS-422 | RS-485 Half-Duplex / RS-485, RS-422 — Both are half-duplex RS-485 transceivers.; HT3485EARZ: Both are RS-485 transceivers.; MAX3485ED: Both are RS-485 transceivers. |
| Data Rate | 500 kbps | 500 kbps | 10 Mbps | 10 Mbps | 500 kbps / 10 Mbps — Identical data rate suggests compatible slew-rate limiting.; HT3485EARZ: Much higher speed, not slew-rate limited. May cause EMI.; MAX3485ED: Much higher speed, not slew-rate limited. May cause EMI. |
| Voltage | 3V to 5.5V | 3.0V to 5.5V | 3.3V | 3.3V | 3.0V to 5.5V / 3.3V — Candidate supply range fully covers target.; HT3485EARZ: Operates within target's supply range.; MAX3485ED: Operates within target's supply range. |
| Pinout | Standard SOP-8 | Unknown | - | - | Unknown — Pinout must be verified from datasheet for drop-in compatibility. |
Application & sourcing insights
Questions & answers
Verified drop-in options for UM3483EESA are limited in the current batch. Review candidates marked Strong match or Datasheet verified, and validate package, pinout, and electrical limits before committing a BOM change.