SLM2457

Overview

The SLM2457 is a second-generation embedded modem from Wintec Industries, built on the Silicon Labs ISO modem chipset. It supports V.90 specifications with a maximum download speed of 56Kbps and an upload speed of 33.6Kbps. The device features comprehensive error correction and data compression capabilities, including V.42, MNP2-4, V.42bis, and MNP5 protocols. It is FCC certified for industrial applications. The component is housed in a compact 1.4” x 0.9” 24-pin small form factor package designed for serial mode operation only.

Feature Summary

• Supports V.90 protocol with 56Kbps download and 33.6Kbps upload speeds
• Integrated error correction and data compression (V.42, V.42bis, MNP2-4, MNP5)
• Compact 24-pin DIP form factor (1.4” x 0.9”) for space-constrained designs
• Serial mode interface for direct host system communication

Applications

• Medical systems requiring long-term product stability
• Industrial communication equipment
• Embedded control systems needing reliable serial connectivity

Procurement Notes

Verify the specific firmware revision required for your application, as Wintec may append suffixes like “-xy” to track revisions. Confirm that the 24-pin serial-only form factor meets your hardware interface requirements before ordering. Ensure compatibility with the host system's UART or serial port configuration.

Selection Notes

Select the SLM2457 when V.90 compliance and high-speed downstream transfer are necessary. Choose this model over the SLM2434 if faster download rates are critical. Ensure the design accommodates the 24-pin DIP footprint and utilizes a serial interface, as parallel mode is not supported in this specific form factor.

Part Context

The SLM2457 belongs to the second generation of Wintec’s SLM Embedded Modem Series. It shares the same physical dimensions as other models in the 24-pin series but offers enhanced performance through V.90 support. It complements the larger 40-pin DIP family by providing a smaller solution for modern embedded applications.

Replacement Considerations

The SLM2434 serves as a lower-speed alternative within the same series. For legacy parallel interface needs, the 40-pin DIP models such as the SL2456 may be considered, though they differ significantly in pin count and interface type.