SC16C750BIB64,128

UARTs (Universal Asynchronous Receiver Transmitter) Overview

The SC16C750BIB64,128 is a single-channel Universal Asynchronous Receiver and Transmitter (UART) manufactured by NXP Semiconductors. It operates at supply voltages of 2.5 V, 3.3 V, or 5 V and supports 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. The device features 64-byte transmit and receive FIFOs with programmable trigger levels and automatic hardware flow control. It is housed in a 64-lead LQFP package and functions within an industrial temperature range of -40 °C to +85 °C.

UARTs (Universal Asynchronous Receiver Transmitter) Feature Summary

• Provides 64-byte transmit and receive FIFOs with selectable interrupt trigger levels to reduce software overhead.
• Supports automatic hardware flow control using RTS and CTS signals for efficient data throughput.
• Includes internal loopback capability for on-board diagnostics and fault isolation.
• Features a programmable baud rate generator supporting internal crystal or external clock inputs.

UARTs (Universal Asynchronous Receiver Transmitter) Applications

• High-speed modem interfaces requiring fast data processing.
• Shared network environments needing reduced CPU bandwidth usage.
• Industrial control systems operating in wide temperature ranges.

UARTs (Universal Asynchronous Receiver Transmitter) Procurement Notes

Verify the specific ordering suffix IB64 corresponds to the LQFP64 plastic low profile quad flat package variant. Confirm that the 128 suffix aligns with the manufacturer's standard packaging quantity requirements. Ensure the component meets RoHS compliance standards as specified in the product data sheet before finalizing procurement orders.

UARTs (Universal Asynchronous Receiver Transmitter) Selection Notes

Select this UART when upgrading from legacy 16C450 designs to gain larger FIFO buffers without changing pinouts. It is suitable for applications requiring independent TX/RX baud rates and DMA signaling via RXRDY and TXRDY pins. Verify voltage compatibility with the host system bus, as input pins are 5 V tolerant while operation supports lower voltage domains.

UARTs (Universal Asynchronous Receiver Transmitter) Part Context

This component belongs to the SC16C750B family of UARTs designed as upward solutions for standard asynchronous communication. It maintains register compatibility with the 16C450 while adding advanced features like 64-byte FIFOs and auto-flow control. The IB64 designation specifically identifies the LQFP64 package version intended for surface mount assembly in compact electronic designs.

UARTs (Universal Asynchronous Receiver Transmitter) Replacement Considerations

The SC16C750B is functionally equivalent to the TL16C750 and ST16C750. It serves as a direct pin-compatible replacement for the 16C450 and 16C550 series devices. Designers migrating from older UARTs should verify software register initialization sequences to leverage the enhanced FIFO capabilities.