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The SL2434SU is an embedded modem module based on the Silicon Labs ISO modem chipset, designed for compact integration. It supports a maximum data speed of 33.6 Kbps and utilizes V.34 modulation protocols. The device incorporates V.42 error correction alongside MNP2-4, V.42bis, and MNP5 data compression standards. Operating in serial mode via a UART interface, it features a small form factor measuring 1.4 inches by 0.9 inches with a 24-pin configuration. The unit holds FCC certification and CTR/TBR-21 compliance.
Verify that the specific part number matches the required firmware revision and physical pinout for your PCB layout. Confirm that the UART interface timing requirements align with your host microcontroller specifications to ensure reliable data transmission without flow control errors.
Select this model when a 33.6 Kbps connection speed is sufficient for the application. Consider the SL2404SU for lower speeds or the SL2457SU/SL2493SU if higher download rates are necessary. Ensure the host system supports the serial interface protocol defined in the datasheet.
This module belongs to Wintec's SL Embedded Modem Series, which spans two generations of Silicon Labs chipsets. The SL24xx series specifically represents the smaller form factor family supporting only serial mode operation, contrasting with larger parallel interface variants.
Direct replacements within the same series include the SL2404SU, SL2457SU, and SL2493SU. Verify compatibility regarding speed requirements and interface protocols before substituting.