SC16C554BIB64,157

Overview

The SC16C554BIB64,157 is a quad Universal Asynchronous Receiver and Transmitter (QUART) manufactured by NXP Semiconductors. It operates at supply voltages of 5 V, 3.3 V, and 2.5 V with an industrial temperature range from -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. It features 16-byte transmit and receive FIFOs with four selectable interrupt trigger levels. The component provides both Intel (16 mode) and Motorola (68 mode) interface compatibility and is housed in a plastic LQFP64 package.

Feature Summary

• Supports dual bus interface modes for Intel and Motorola microprocessor compatibility
• Includes 16-byte transmit and receive FIFOs with programmable trigger levels
• Provides automatic hardware flow control via auto-RTS and auto-CTS functions
• Offers internal loopback capability for on-board diagnostics

Applications

• High-speed serial data communications requiring multi-channel support
• Systems utilizing shared network environments with fast data processing requirements
• Interfaces connecting external processors to high-speed modems

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package type and environmental compliance. Confirm that the intended application voltage aligns with the specified operational limits. Ensure the target system supports either the 16 or 68 mode interface selection as required by the design.

Selection Notes

Select this component when a quad UART solution with integrated FIFOs is required for multi-channel asynchronous communication. Consider the LQFP64 package constraints regarding available modem pins compared to larger packages. Verify that the host processor can accommodate the selected bus interface mode and interrupt configuration.

Part Context

This part belongs to the SC16C554B/554DB family of quad UARTs. It is pin and software compatible with industry-standard devices such as the ST16C554 and TL16C554. The device powers up to be functionally equivalent to the 16C454, allowing for direct replacement in legacy designs while offering enhanced FIFO capabilities.

Replacement Considerations

The SC16C554BIB64 is pin and software compatible with the ST16C554, TL16C554, and ST68C554. Designers replacing these components should verify that the existing firmware correctly configures the FIFOs and interrupt triggers to utilize the enhanced performance features.