TL16C550CFNG4

UARTs (Universal Asynchronous Receiver Transmitter) Overview

The TL16C550CFNG4 is a single-channel asynchronous communications element (ACE) manufactured by Texas Instruments. It features 16-byte receive and transmit FIFOs with error status bits, supporting data rates up to 1 Mbaud with a 16-MHz clock. The device operates at 3.3 V or 5 V nominal supply voltages and includes programmable baud rate generation, autoflow control (Auto-RTS/Auto-CTS), and full modem control signals. It utilizes a 44-pin PLCC package and provides 3-state TTL-compatible outputs for bidirectional data and control buses.

UARTs (Universal Asynchronous Receiver Transmitter) Feature Summary

• Autoflow control capability using Auto-RTS and Auto-CTS modes to manage serial data flow and prevent overrun errors
• Integrated 16-byte FIFOs for both receiver and transmitter to reduce CPU software overhead
• Programmable baud rate generator supporting divisors from 1 to 65535 for flexible clocking
• Complete modem control interface including CTS, RTS, DSR, DTR, RI, and DCD signals

UARTs (Universal Asynchronous Receiver Transmitter) Applications

• Serial communication interfaces between microprocessors and peripheral devices
• Modem control circuits requiring hardware flow management
• Industrial communication systems operating in standard or low-voltage environments

UARTs (Universal Asynchronous Receiver Transmitter) Procurement Notes

Verify the specific suffix 'FN' corresponds to the 44-pin PLCC package and industrial temperature range if required. Confirm RoHS compliance status through official manufacturer documentation. Check current production lifecycle status as legacy components may have limited availability or obsolescence notices.

UARTs (Universal Asynchronous Receiver Transmitter) Selection Notes

Select this component when a single UART channel with hardware autoflow control is needed. Ensure the system supports 3.3 V or 5 V logic levels. Verify that the 44-pin PLCC footprint matches the PCB design. Consider thermal dissipation requirements for the PLCC package in enclosed applications.

UARTs (Universal Asynchronous Receiver Transmitter) Part Context

The TL16C550C series serves as a functional upgrade to the TL16C450, adding FIFO buffering and autoflow control while maintaining register compatibility. The 'I' variant typically denotes an extended temperature range, whereas the standard 'C' version covers commercial ranges. This part belongs to the broader family of asynchronous communication elements designed for reliable serial data transfer.

UARTs (Universal Asynchronous Receiver Transmitter) Replacement Considerations

The TL16C550B is a predecessor with similar functionality but lacks some advanced features. The SC16C550IB48 by NXP offers comparable UART capabilities with IRDA support. Verify pinout compatibility and register mapping before substituting with other UART ICs.