
Strong alternative with matching key specs and a wider temperature range; likely pin-compatible.
SN75LBC184DR(UMW) is a robust 5V, 250kbps RS-485 transceiver in a SOP-8 package, notable for its integrated 400W surge and ±30kV ESD protection. Alternatives should be carefully vetted for these key protection features.
Most alternatives lack the target's specific surge and ESD protection levels.
All reviewed candidates use the same SOP-8 package, but pinout must be confirmed.
Direct replacement for SN75LBC184DR(UMW) should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
SN65LBC184DR(UMW) appears to be the best alternative, offering matching key specifications and a wider temperature range. Pinout verification is recommended.
The main risk when substituting SN75LBC184DR(UMW) is finding a part that matches its integrated 400W surge and high ESD protection, which are critical for industrial environments.

Strong alternative with matching key specs and a wider temperature range; likely pin-compatible.
| Feature / factor | SN75LBC184DR(UMW) | SN65LBC184DR(UMW) | SSP485N | MAX485ESA-MS | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SOP-8 | SOP-8 | SOP-8 | SOP-8 | SOP-8 — Form factor matches.; SSP485N: Form factor matches.; MAX485ESA-MS: Form factor matches. |
| Voltage | 4.75V - 5.25V | 5V | 5.0V | 4.75V to 5.25V | 5V / 5.0V / 4.75V to 5.25V — Supply voltage matches.; SSP485N: Nominal supply voltage matches.; MAX485ESA-MS: Supply voltage range matches. |
| Interface | 250 kbps | 250 kbps | 500 kbps | 2.5 Mbps | 250 kbps / 500 kbps / 2.5 Mbps — Data rate matches.; SSP485N: Faster data rate may be acceptable.; MAX485ESA-MS: Much faster data rate may cause EMI issues. |
| Application | ±30 kV, 400W Surge | ±30 kV | Not specified | Not specified | ±30 kV / Not specified — ESD and Surge protection match.; SSP485N: Lacks target's key surge protection feature.; MAX485ESA-MS: Lacks target's key surge protection feature. |
| Temperature | -20°C to 85°C | -40°C to 105°C | - | - | -40°C to 105°C — Wider operating temperature range. |
Verified drop-in options for SN75LBC184DR(UMW) 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.