SC16C2552BIA44,518

Overview

The SC16C2552BIA44,518 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 of −40 °C to +85 °C. The device supports data rates up to 5 Mbit/s at 5 V and 3.3 V, and up to 3 Mbit/s at 2.5 V. Each channel features independent 16-byte transmit and receive FIFOs with error flags. It includes programmable baud rate generators, modem control interfaces, DMA operation capabilities, and internal loopback diagnostics.

Feature Summary

• Dual UART channels with 16-byte transmit and receive FIFOs for enhanced throughput
• Supports 5 V, 3.3 V, and 2.5 V operation with 5 V tolerant input pins
• Independent programmable baud rate generators supporting up to 5 Mbit/s data rates
• DMA mode data transfer with configurable trigger levels and monitoring signals

Applications

• Microprocessor serial port expansion in FPGA-based systems
• DSP high-speed serial communication interface extension
• Industrial applications requiring reliable asynchronous serial data transmission

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current product status documentation. Confirm that the PLCC44 package variant matches the required board layout specifications. Ensure compatibility with existing system voltage levels and clock frequencies before finalizing procurement decisions.

Selection Notes

Select this component when dual independent UART channels are required with FIFO buffering to reduce CPU overhead. Verify that the target application supports the PLCC44 package footprint. Ensure the system design accommodates the necessary crystal or external clock connections for the programmable baud rate generators.

Part Context

The SC16C2552B series provides dual UART functionality with 16-byte FIFOs, distinguishing it from earlier single-channel or non-FIFO UARTs. It is pin-compatible with legacy devices like the PC16552 and ST16C2552, facilitating upgrades in existing designs without significant hardware modifications.

Replacement Considerations

The SC16C2552B is pin-to-pin compatible with the PC16C552 and ST16C2552. Designers upgrading from these components should verify electrical parameter alignment, particularly regarding operating voltage ranges and maximum data rates.