TL16C552APN

UARTs (Universal Asynchronous Receiver Transmitter) Overview

The TL16C552APN is a dual-channel asynchronous communications element (ACE) featuring integrated 16-byte transmit and receive FIFOs. It operates on a single 5 V supply within an industrial temperature range of -40 °C to +85 °C. The device supports baud rates up to 1 Mbaud with a maximum clock frequency of 16 MHz. It includes two independent serial channels and a bidirectional parallel Centronics-type printer port. Each channel provides programmable character formats, parity generation/detection, and stop bit selection. The component utilizes a 68-pin PLCC package.

UARTs (Universal Asynchronous Receiver Transmitter) Feature Summary

• Dual serial communication channels with independent interrupt control
• Integrated 16-byte FIFOs for both transmission and reception to reduce CPU overhead
• Bidirectional parallel data port supporting standard Centronics printer interfaces
• Hardware compatibility with TL16C452 and IBM PC/AT systems

UARTs (Universal Asynchronous Receiver Transmitter) Applications

• IBM PC/AT compatible computer system designs
• Microcomputer or microprocessor-based serial I/O interfaces
• Systems requiring simultaneous dual-port asynchronous communication
• Parallel printer interface implementations

UARTs (Universal Asynchronous Receiver Transmitter) Procurement Notes

Verify the specific suffix 'A' against the manufacturer's current production status, as datasheets indicate potential revisions or end-of-life notifications for older variants. Confirm that the PLCC-68 package availability aligns with current manufacturing schedules. Ensure the operating voltage requirements match the target system's 5 V logic levels before integration.

UARTs (Universal Asynchronous Receiver Transmitter) Selection Notes

Select this component when dual UART functionality combined with a parallel port is required in a single IC. It serves as a drop-in replacement for legacy TL16C452 designs. Consider the 68-pin PLCC package constraints for PCB layout. Verify that the 16-byte FIFO depth meets the system's throughput requirements compared to smaller buffer alternatives.

UARTs (Universal Asynchronous Receiver Transmitter) Part Context

This part belongs to the Texas Instruments TL16C552 family of enhanced dual-channel ACEs. It expands upon the single-channel TL16C550 by adding a second serial port and a parallel printer port. The device is designed to consolidate multiple interface functions into one chip, reducing board space and complexity in embedded computing applications.

UARTs (Universal Asynchronous Receiver Transmitter) Replacement Considerations

The TL16C552A is functionally compatible with the TL16C452. Designers migrating from TL16C452 should verify register mapping consistency. Other family members like the TL16C552FN share identical electrical characteristics but differ only in packaging type.