TL16C554FNR

UARTs (Universal Asynchronous Receiver Transmitter) Overview

The TL16C554FNR is a quad universal asynchronous receiver/transmitter (UART) integrated circuit manufactured by Texas Instruments. It integrates four independent UART channels, each equipped with a 16-byte first-in-first-out (FIFO) buffer to enhance data throughput and reduce processor overhead. The device supports asynchronous serial communication protocols with a maximum data rate of 1 Mbps. It operates within a supply voltage range of 3 V to 5.25 V and is housed in a 68-pin Plastic Leaded Chip Carrier (PLCC) package. The component is designed for industrial temperature ranges and includes features such as automatic flow control and modem control signals.

UARTs (Universal Asynchronous Receiver Transmitter) Feature Summary

• Integrates four independent UART channels with dedicated 16-byte FIFOs for each transmitter and receiver path.
• Supports high-speed asynchronous serial communication with data rates up to 1 Mbps.
• Includes hardware automatic flow control and full modem control signal interfacing capabilities.
• Features false start bit detection to improve communication reliability in noisy environments.

UARTs (Universal Asynchronous Receiver Transmitter) Applications

• Industrial automation systems requiring multiple serial communication ports.
• Embedded controllers managing simultaneous data streams from various peripherals.
• Telecommunications equipment utilizing standard asynchronous interfaces.
• Data acquisition systems connecting sensors or modules via UART.

UARTs (Universal Asynchronous Receiver Transmitter) Procurement Notes

Verify the specific suffix 'FNR' against the manufacturer's official datasheet to confirm the package type, pinout, and operating temperature range. Ensure compatibility with the target system's voltage levels and interface requirements before procurement. Cross-reference the part number with authorized distributors to confirm current availability and authenticity.

UARTs (Universal Asynchronous Receiver Transmitter) Selection Notes

Select this component when multiple independent UART channels are required on a single chip. The 16-byte FIFOs are suitable for applications needing reduced CPU intervention during high-throughput serial transfers. Verify that the 68-PLCC package fits the PCB layout constraints and that the 3V to 5.25V supply range matches the system power design.

UARTs (Universal Asynchronous Receiver Transmitter) Part Context

The TL16C554 series belongs to Texas Instruments' family of advanced UART devices. These components are designed to replace legacy 16550-compatible UARTs while offering enhanced performance through larger FIFO buffers and additional control features. The TL16C554FNR specifically denotes the variant packaged in a 68-pin PLCC format, intended for surface-mount assembly in compact electronic designs.

UARTs (Universal Asynchronous Receiver Transmitter) Replacement Considerations

Direct replacements include other variants within the TL16C554 family, such as TL16C554FN or TL16C554AFNR, provided the package and temperature specifications align. Ensure any substitute maintains the 68-pin PLCC footprint and 16-byte FIFO architecture for pin-to-pin and functional compatibility.