TL16C554AFNRG4

UARTs (Universal Asynchronous Receiver Transmitter) Overview

The TL16C554AFNRG4 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 intervention. The device supports asynchronous communication protocols with baud rates up to 1 Mbps when driven by a 16 MHz clock. It operates on a single power supply ranging from 3 V to 5.25 V. The component is housed in a 68-pin Plastic Leaded Chip Carrier (PLCC) package and is rated for commercial operating temperatures between 0°C and 70°C.

UARTs (Universal Asynchronous Receiver Transmitter) Feature Summary

• Integrates four independent UART channels with dedicated 16-byte FIFOs for each transmitter and receiver path.
• Supports automatic flow control via hardware handshake signals including RTS, CTS, DTR, DSR, RI, and DCD.
• Features false start bit detection to improve signal integrity and error handling during asynchronous data transmission.

UARTs (Universal Asynchronous Receiver Transmitter) Applications

• Industrial automation systems requiring multiple serial communication ports
• Embedded controllers managing simultaneous peripheral connections
• Telecommunications equipment utilizing standard asynchronous interfaces

UARTs (Universal Asynchronous Receiver Transmitter) Procurement Notes

Verify the complete part number including the G4 suffix to confirm lead-free compliance and RoHS status. Confirm the specific package variant, as the AFNR designation indicates a 68-PLCC form factor. Ensure the operating temperature range aligns with the commercial grade specification of 0 to 70 degrees Celsius for the intended environment.

UARTs (Universal Asynchronous Receiver Transmitter) Selection Notes

Select this component when four distinct serial channels are required within a single footprint. The 16-byte FIFO depth is suitable for applications demanding higher data rates or reduced CPU overhead compared to standard 1-byte buffer UARTs. Verify that the system voltage falls within the 3 V to 5.25 V operational window and that the PLCC package fits the target PCB layout constraints.

UARTs (Universal Asynchronous Receiver Transmitter) Part Context

This device belongs to the TL16C554A family of asynchronous communications elements. The 'G4' suffix denotes a lead-free and RoHS-compliant version of the standard TL16C554AFNR. It serves as a multi-channel interface solution, expanding upon dual-UART variants by providing four independent communication paths in a compact integrated circuit format.

UARTs (Universal Asynchronous Receiver Transmitter) Replacement Considerations

The TL16C554AFNR is the non-RoHS equivalent. For pin-compatible alternatives with similar specifications, consider the TL16C554APN or TL16C554AIPN, which utilize LQFP packages instead of PLCC. Verify electrical compatibility before substitution.