SC16C554BIB64,128

Overview

The SC16C554BIB64,128 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 within an 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. 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) bus interfaces and is housed in a 64-lead LQFP package.

Feature Summary

• Supports dual interface modes for compatibility with Intel and Motorola microprocessor buses
• Includes 16-byte transmit and receive FIFOs with programmable interrupt trigger levels
• Provides automatic hardware flow control via auto-RTS and auto-CTS functions
• Features internal loopback capability for diagnostic fault isolation

Applications

• Serial data communications requiring multi-channel asynchronous transfer
• Systems utilizing Intel or Motorola bus architectures
• High-speed modem connections and shared network environments

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package type and operational mode. Confirm that the intended application environment falls within the specified industrial temperature range and voltage requirements. Ensure proper handling procedures are followed for the surface-mount LQFP64 package during assembly.

Selection Notes

Select this component when a quad UART solution with integrated FIFOs is required for high-throughput serial applications. Consider the 16/68 mode selection pin availability if software compatibility with legacy 16C454/554 standards is necessary. Evaluate the LQFP64 package dimensions against available PCB real estate constraints.

Part Context

This part belongs to the SC16C554B/554DB family of quad UARTs. It serves as an upward-compatible replacement for devices like the ST16C554 and TL16C554, offering enhanced FIFO capabilities while maintaining pin and software compatibility with industry-standard predecessors.

Replacement Considerations

The SC16C554BIB64 is functionally equivalent to the SC16C554DBIB64, differing primarily in the internal bonding of the INTSEL pin. Verify interrupt configuration requirements before substituting between these variants.