SC28L198A1A,518

UARTs (Universal Asynchronous Receiver Transmitter) Overview

The SC28L198A1A,518 is an octal UART interface IC manufactured by NXP USA Inc. It provides eight full-duplex asynchronous channels with 16-byte receiver and transmit FIFOs per channel. The device supports a single 3.3 V or 5 V supply voltage and operates within an industrial temperature range of -40 °C to +85 °C. It features a synchronous host interface with a 30 ns data bus release time and 125 ns bus cycle time. Baud rates are selectable from 22 fixed rates (50 to 230.4 K baud) or via programmable counters up to 500 K baud. The component is available in an 84-pin PLCC package.

UARTs (Universal Asynchronous Receiver Transmitter) Feature Summary

• Eight independent full-duplex UART channels with integrated 16-byte FIFOs for both reception and transmission.
• Synchronous host interface supporting burst mode access with fast data bus release times.
• Programmable interrupt arbitration system with automatic identification of highest priority pending interrupts.
• In-band flow control using user-defined Xon/Xoff characters and hardware handshaking capabilities.

UARTs (Universal Asynchronous Receiver Transmitter) Applications

• Statistical multiplexers
• Data concentrators
• Terminal servers
• Process control systems

UARTs (Universal Asynchronous Receiver Transmitter) Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and temperature grade. Ensure the procurement source provides valid traceability for the component. Confirm that the delivered parts match the specified 84-pin PLCC configuration and industrial rating requirements before integration into the design.

UARTs (Universal Asynchronous Receiver Transmitter) Selection Notes

Select this component when multiple serial communication channels are required on a single board. The integrated FIFOs reduce processor overhead compared to standard UARTs. Verify that the host system can provide the necessary Sclk frequency, which must be strictly greater than twice the highest input clock frequency. Ensure the power supply voltage matches the specific variant's operational range.

UARTs (Universal Asynchronous Receiver Transmitter) Part Context

This part belongs to the SC28L198 Octal UART family designed for high-density serial communication applications. It supersedes earlier Philips Semiconductors data sheets dated January 1999. The device utilizes 1.0 micron CMOS technology to achieve low power consumption while maintaining TTL compatibility at 5V operation.

UARTs (Universal Asynchronous Receiver Transmitter) Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.