NS16C2552TVS/NOPB

Overview

The NS16C2552TVS/NOPB is a dual universal asynchronous receiver/transmitter (UART) interface integrated circuit manufactured by Texas Instruments. It features two independent UART channels, each equipped with a 16-byte transmit and receive FIFO buffer to enhance data throughput and reduce CPU overhead. The device supports operation within a supply voltage range of 1.8 V to 5.5 V, ensuring compatibility with various logic levels. It operates at clock frequencies up to 24 MHz and supports data rates up to 0.1875 Mbps. The component is housed in a 48-pin TQFP package suitable for surface-mount technology. It functions reliably across an industrial temperature range from -40°C to +85°C.

Feature Summary

• Dual independent UART channels with dedicated 16-byte FIFOs for efficient data buffering
• Wide supply voltage compatibility ranging from 1.8 V to 5.5 V
• Supports high-speed asynchronous serial communication with programmable baud rates
• Integrated hardware flow control signals for reliable data transmission management

Applications

• Industrial automation systems requiring robust serial communication interfaces
• Embedded computing platforms needing multiple UART connections
• Telecommunications equipment utilizing asynchronous data transfer protocols
• Test and measurement devices interfacing with peripheral instruments

Procurement Notes

Verify the complete part number including the suffix /NOPB to ensure lead-free compliance and specific packaging configuration. Confirm the TQFP-48 package variant matches your PCB footprint requirements. Check current availability status as production cycles may vary. Ensure environmental specifications meet your operational temperature constraints before finalizing procurement orders.

Selection Notes

Select this component when dual UART functionality with FIFO buffering is required in a compact surface-mount package. Consider the 1.8 V to 5.5 V operating range for flexibility in mixed-voltage systems. Evaluate the 48-pin TQFP form factor against available board space. Verify that the maximum data rate and clock frequency meet the specific throughput demands of the target application design.

Part Context

This device belongs to the NS16C2552 series of dual UART controllers. It serves as a modern replacement for legacy 16550-compatible UARTs while offering enhanced FIFO capabilities. The component integrates standard UART control registers alongside advanced buffering features. It is designed for applications requiring reliable asynchronous serial communication in industrial and commercial environments.

Replacement Considerations

Compatible alternatives include the TL16C2552FNR for PLCC-44 packages and other variants within the 16C2552 family. Verify pinout compatibility and register-level software compatibility when substituting. Ensure voltage ranges and temperature specifications align with the original design requirements.