SC16C754BIB80,551

UARTs (Universal Asynchronous Receiver Transmitter) Overview

The SC16C754BIB80,551 is a quad Universal Asynchronous Receiver/Transmitter (UART) manufactured by NXP Semiconductors. It features four independent UART channels with 64-byte transmit and receive FIFOs. The device supports data rates up to 5 Mbit/s at 3.3 V and 5 V supply voltages, and up to 3 Mbit/s at 2.5 V. It operates within an industrial temperature range of -40 °C to +85 °C. The component is housed in an LQFP80 plastic low profile quad flat package with 80 leads. Key electrical specifications include a maximum supply voltage of 5.5 V, a minimum supply voltage of 2.25 V, and an operating supply current of 6 mA.

UARTs (Universal Asynchronous Receiver Transmitter) Feature Summary

• Four independent UART channels with 64-byte FIFOs for each transmitter and receiver.
• Supports software (Xon/Xoff) and hardware (RTS/CTS) flow control with programmable trigger levels.
• Integrated modem control functions including CTS, RTS, DSR, DTR, RI, and CD signals.
• Programmable baud rate generator with selectable prescaler and interrupt prioritization.

UARTs (Universal Asynchronous Receiver Transmitter) Applications

• Industrial communication systems requiring multiple serial interfaces.
• Embedded controllers needing DMA signaling capabilities for high-speed data transfer.
• Modem interface applications utilizing full hardware handshake protocols.

UARTs (Universal Asynchronous Receiver Transmitter) Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and environmental compliance. Confirm availability status as distribution channels may list discontinued or obsolete variants. Ensure the source document matches the exact part number for accurate pinout and electrical parameter validation.

UARTs (Universal Asynchronous Receiver Transmitter) Selection Notes

Select this component when a system requires four distinct UART interfaces with substantial buffering to reduce processor overhead. Consider the LQFP80 package dimensions for PCB layout constraints. Verify that the target application voltage aligns with the supported 2.5 V, 3.3 V, or 5 V operation ranges and that the required data rate does not exceed the limits defined for the chosen supply voltage.

UARTs (Universal Asynchronous Receiver Transmitter) Part Context

This part belongs to the SC16C754B family of quad UARTs from NXP Semiconductors. It is pin-compatible with legacy devices such as the TL16C754 and SC16C654IA68, facilitating direct replacements in existing designs. The IB80 suffix specifically denotes the LQFP80 package variant, distinguishing it from LQFP64 or PLCC68 options within the same functional family.

UARTs (Universal Asynchronous Receiver Transmitter) Replacement Considerations

The SC16C754BIBM and SC16C754BIA68 are alternative package versions of the same core device. The TL16C754 is a software-compatible predecessor but lacks some enhanced FIFO features. Verify pin compatibility and register mapping before substituting with these alternatives.