SC28L198A1BE,551

UARTs (Universal Asynchronous Receiver Transmitter) Overview

The SC28L198A1BE,551 is an octal universal asynchronous receiver/transmitter (UART) designed for 3.3 V and 5 V supply voltages. It integrates eight independent full-duplex UART channels, each equipped with 16-byte receive and transmit FIFOs to minimize interrupt overhead. The device features a synchronous host interface with a 30 ns data bus release time and supports programmable baud rates up to 460.8 K baud using internal generators or external clocks. It includes automatic address detection in multi-drop mode, Xon/Xoff flow control, and a watchdog timer for each receiver.

UARTs (Universal Asynchronous Receiver Transmitter) Feature Summary

• Integrates eight independent full-duplex UART channels with 16-byte FIFOs for both reception and transmission.
• Supports flexible baud rate generation via 22 fixed rates, programmable counters, or external clock inputs.
• Includes automatic address recognition and Xon/Xoff in-band flow control for efficient data handling.
• Features an interrupt arbitration system that identifies the highest priority pending interrupt source.

UARTs (Universal Asynchronous Receiver Transmitter) Applications

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

UARTs (Universal Asynchronous Receiver Transmitter) Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and temperature range. Ensure compatibility with the target supply voltage environment, as the device supports both 3.3 V and 5 V operation. Confirm that the required pin count matches the selected package variant before finalizing procurement.

UARTs (Universal Asynchronous Receiver Transmitter) Selection Notes

Select this component when multiple serial communication channels are required within a single integrated circuit. Consider the 16-byte FIFO depth for applications requiring reduced CPU interrupt load. Verify that the host system can provide the necessary Sclk frequency and that the available crystal oscillator options meet the desired baud rate accuracy requirements.

UARTs (Universal Asynchronous Receiver Transmitter) Part Context

This part belongs to the SC28L198 family of octal UARTs manufactured by NXP USA Inc. (formerly Philips Semiconductors). It is designed to replace older single-channel UARTs in high-density applications. The device utilizes CMOS technology to achieve low power consumption while maintaining high-speed data transfer capabilities across all eight channels simultaneously.

UARTs (Universal Asynchronous Receiver Transmitter) Replacement Considerations

The SC28L198 serves as a functional replacement for older single-channel UARTs in multi-port designs. No direct public substitute part numbers are confirmed in the provided documentation. When replacing legacy components, verify software register compatibility and ensure the new FIFO depths do not alter existing interrupt handling logic.