SC16C2550IB48,128

Overview

The SC16C2550IB48,128 is a dual Universal Asynchronous Receiver/Transmitter (UART) manufactured by NXP USA Inc. It features 16-byte transmit and receive FIFOs with an integrated infrared (IrDA) encoder/decoder. The device supports data rates up to 5 Mbits/s at 5 V and 3.3 V, and 3 Mbits/s at 2.5 V. It operates within the industrial temperature range and is housed in a 48-lead LQFP package.

Feature Summary

• Dual independent UART channels with 16-byte FIFOs for both transmission and reception
• Integrated IrDA encoder and decoder for infrared communication compliance
• Supports hardware and software flow control mechanisms including Xon/Xoff
• Programmable baud rate generator supporting internal crystal or external clock inputs

Applications

• High-speed modem interfaces requiring fast data processing
• Shared network environments demanding reduced CPU bandwidth usage
• Infrared communication systems utilizing IrDA protocols

Procurement Notes

Verify the specific ordering suffix

Selection Notes

Select this component when dual serial ports with FIFO buffering are required. Ensure the system voltage matches the 5 V, 3.3 V, or 2.5 V operational requirements. Confirm that the LQFP48 package fits the PCB layout constraints. Verify compatibility with existing software drivers if migrating from ST16C2450 or similar legacy UARTs.

Part Context

This part belongs to the SC16C2550 family of dual UARTs. It is pin-compatible with the ST16C2550 and functionally compatible with the 16C2450 upon power-up. The IB48 designation specifically indicates the LQFP48 plastic low profile quad flat package variant.

Replacement Considerations

The SC16C2550IB48 is pin-compatible with the ST16C2550. It is also functionally equivalent to the 16C2450 after power-up. Software compatibility exists with INS8250 and SC16C550 standards.