SC16C650AIN40,112

Overview

The SC16C650AIN40,112 is a Universal Asynchronous Receiver/Transmitter (UART) manufactured by NXP Semiconductors. It operates at supply voltages of 2.5 V, 3.3 V, and 5 V within an industrial temperature range of -40 °C to +85 °C. The device features 32-byte transmit and receive FIFOs with error flags, supporting data rates up to 3 Mbit/s at 5 V, 2 Mbit/s at 3.3 V, and 1 Mbit/s at 2.5 V. It includes automatic hardware/software flow control, IrDA encoder/decoder support, and DMA signaling via RXRDY and TXRDY pins. The component is housed in a DIP40 plastic dual in-line package.

Feature Summary

• Pin compatible with industry-standard ST16C450/550, TL16C450/550, and PC16C450/550 devices.
• Provides 32-byte transmit and receive FIFOs to reduce external CPU bandwidth requirements.
• Supports automatic hardware flow control using RTS and CTS signals or software flow control using programmable Xon/Xoff characters.
• Includes infrared (IrDA) encoder/decoder interface for serial infrared communication.

Applications

• Serial data communications requiring high-speed processing.
• Systems utilizing shared network environments with fast data throughput needs.
• Applications requiring compatibility with existing 16C450 software architectures.

Procurement Notes

Verify the specific ordering suffix

Selection Notes

Select this component when pin compatibility with legacy 16C450/550 designs is required alongside enhanced FIFO depth. Ensure the system supports the necessary voltage levels (2.5 V, 3.3 V, or 5 V) and that the DIP40 package fits the mechanical constraints. Confirm that the baud rate generator configuration meets the timing requirements for the target application.

Part Context

The SC16C650A series represents an enhancement over the standard 16C450 UART by integrating 32-byte FIFOs instead of single-byte holding registers. This family maintains backward compatibility with common industry standards while offering improved performance for multi-channel environments. The IN40 designation specifically identifies the DIP40 package variant within this product line.

Replacement Considerations

The SC16C650BIB48 is a functional equivalent within the same family but utilizes an LQFP48 package. Direct pin-for-pin replacement requires verifying package footprint compatibility. Other variants like SC16C550 offer only 16-byte FIFOs and may not meet throughput requirements if FIFO depth is critical.