SC28L194A1A,529

UARTs (Universal Asynchronous Receiver Transmitter) Overview

The SC28L194A1A,529 is a quad UART interface IC manufactured by NXP USA Inc., designed for 3.3 V and 5 V supply voltages. It integrates four full-duplex asynchronous channels, each equipped with 16-byte receive and transmit FIFOs to minimize overrun and interrupt overhead. The device supports independent baud rate selection via 22 fixed rates or programmable counters, accommodating data rates up to 500 Kbps. It features a synchronous host interface, automatic in-band flow control using Xon/Xoff, and address recognition in multi-drop modes. The component operates within an industrial temperature range of -40°C to +85°C and utilizes a 68-pin PLCC package.

UARTs (Universal Asynchronous Receiver Transmitter) Feature Summary

• Four independent full-duplex UART channels with 16-byte FIFOs
• Synchronous bus interface for high-speed host communication
• Automatic in-band flow control and address recognition capabilities
• Integrated power-down mode for reduced power consumption

UARTs (Universal Asynchronous Receiver Transmitter) Applications

• Statistical multiplexers and data concentrators
• Process control and building automation systems
• Terminal servers and computer-peripheral links

UARTs (Universal Asynchronous Receiver Transmitter) Procurement Notes

Verify the specific ordering suffix against the manufacturer's current product data sheet to confirm package type and temperature grade. Ensure compatibility with system voltage requirements before integration. Cross-reference pin assignments with official documentation to prevent interface errors during PCB layout and assembly processes.

UARTs (Universal Asynchronous Receiver Transmitter) Selection Notes

Select this component when multiple asynchronous serial channels are required on a single integrated circuit. Consider the 16-byte FIFO depth for applications requiring reduced CPU interrupt frequency. Verify that the host system clock meets the minimum frequency requirements relative to the baud rate generator inputs for proper timing synchronization.

UARTs (Universal Asynchronous Receiver Transmitter) Part Context

This part belongs to the SC28L194 family of quad UARTs, superseding earlier versions from Philips Semiconductors. It provides upward compatibility with related Octart devices while offering enhanced FIFO depths and flexible baud rate generation options suitable for diverse industrial and commercial communication environments.

UARTs (Universal Asynchronous Receiver Transmitter) Replacement Considerations

SC28L194A1A is the base equivalent for the same package and specifications. Check for updated revisions in the SC28L194 series to ensure feature parity.