SC16C2550BIN40,112

Overview

The SC16C2550BIN40,112 is a dual Universal Asynchronous Receiver and Transmitter (UART) manufactured by NXP USA Inc. It operates at supply voltages of 5 V, 3.3 V, and 2.5 V within the industrial temperature range. The device features independent transmit and receive channels, each equipped with 16-byte FIFOs to reduce external CPU bandwidth requirements. It supports serial data rates up to 5 Mbit/s at 5 V and 3.3 V, and up to 3 Mbit/s at 2.5 V. The component utilizes a DIP40 package and includes programmable baud rate generators, modem control interfaces, and DMA mode data transfer capabilities.

Feature Summary

• Dual UART channels with 16-byte transmit and receive FIFOs
• Support for 5 V, 3.3 V, and 2.5 V operation with 5 V tolerant inputs
• Programmable baud rate generator supporting rates up to 5 Mbit/s
• DMA mode data transfer controlled by FIFO trigger levels

Applications

• High-speed modem applications requiring fast data processing
• Shared network environments needing reduced interrupt servicing time
• Multi-channel communication systems utilizing selectable FIFO trigger levels

Procurement Notes

Verify the specific ordering suffix BIN40 corresponds to the DIP40 plastic dual in-line package with 40 leads as defined in the official datasheet. Confirm that the '112' suffix aligns with the manufacturer's current packaging or revision specifications. Ensure compatibility with the required industrial temperature range and voltage levels before procurement.

Selection Notes

Select this component when a dual UART solution with integrated FIFOs is required for high-speed serial communications. It serves as an upgrade from devices lacking FIFOs, such as the 16C2450, by significantly reducing CPU overhead. Ensure the design supports the necessary clock frequencies for the desired baud rates and accommodates the DIP40 package footprint.

Part Context

The SC16C2550B series provides enhanced UART functionality compared to previous generations like the ST16C2450. It maintains pin and functional compatibility with the 16C2450 while adding 16-byte FIFOs and DMA support. The device is software compatible with standard 16C550 architectures, facilitating migration for existing designs requiring higher throughput.

Replacement Considerations

The SC16C2550B is pin-compatible with the ST16C2550. It is also functionally compatible with the 16C2450. For designs requiring higher data rates or larger FIFOs, the SC16C652B offers 32-byte FIFOs and IrDA support.