SC16C750IA44,512

UARTs (Universal Asynchronous Receiver Transmitter) Overview

The SC16C750IA44,512 is a Universal Asynchronous Receiver/Transmitter (UART) manufactured by NXP USA Inc., housed in a PLCC44 package. It supports serial data rates up to 3 Mbits/s at 5 V, 2 Mbits/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. It operates within an industrial temperature range of -40 °C to +85 °C and includes automatic hardware flow control, DMA signaling via TXRDY/RXRDY, and internal loop-back diagnostics.

UARTs (Universal Asynchronous Receiver Transmitter) Feature Summary

• Provides 64-byte transmit and receive FIFOs with independent programmable trigger levels for both channels.
• Supports automatic hardware flow control using RTS and CTS signals to manage data throughput.
• Includes internal loop-back capability for on-board diagnostic testing of transmitter and receiver circuits.
• Offers DMA mode operation through dedicated RXRDY and TXRDY output pins.

UARTs (Universal Asynchronous Receiver Transmitter) Applications

• High-speed modem interfaces requiring fast data processing.
• Shared network environments needing efficient CPU bandwidth management.
• Multi-channel communication systems utilizing FIFO interrupt triggers.

UARTs (Universal Asynchronous Receiver Transmitter) Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and revision level. Ensure the component meets the required industrial temperature specifications for the intended application environment. Cross-reference the pinout configuration with the target PCB design to guarantee compatibility with the PLCC44 footprint.

UARTs (Universal Asynchronous Receiver Transmitter) Selection Notes

Select this UART when upgrading from legacy 16C450 or 16C550 designs to gain increased buffer capacity. Choose this model if the system requires automatic hardware flow control to reduce software overhead. Consider this part for applications demanding high baud rates up to 3 Mbits/s with low power consumption options.

UARTs (Universal Asynchronous Receiver Transmitter) Part Context

This component belongs to the SC16C750 family of UARTs, which are designed as upward-compatible solutions for standard 16C450 register sets. It maintains pin compatibility with industry-standard devices like the TL16C750 and ST16C450/550. The device allows existing generic software to run after reset while enabling enhanced features through register programming.

UARTs (Universal Asynchronous Receiver Transmitter) Replacement Considerations

The SC16C750 is functionally equivalent to the TL16C750 and pin-compatible with the ST16C450/550 series. Verify that replacement units support the same voltage levels and FIFO depths to ensure seamless integration without hardware modifications.