SC16C654BIBS,557

UARTs (Universal Asynchronous Receiver Transmitter) Overview

The SC16C654BIBS,557 is a quad universal asynchronous receiver and transmitter (QUART) designed for serial data communications. It converts parallel data to serial and vice versa, supporting data rates up to 5 Mbit/s at 5 V and 3.3 V, and 3 Mbit/s at 2.5 V. The device features 64-byte transmit and receive FIFOs with error flags, automatic hardware/software flow control, and infrared encoder/decoder capabilities. It operates in industrial temperature ranges (-40 °C to +85 °C) and supports both Intel (16 mode) and Motorola (68 mode) interfaces. The component is housed in a 48-terminal HVQFN package.

UARTs (Universal Asynchronous Receiver Transmitter) Feature Summary

• Quad UART architecture with 64-byte FIFOs per channel
• Supports 5 V, 3.3 V, and 2.5 V operation with 5 V tolerant inputs
• Integrated infrared (IrDA) encoder and decoder
• Automatic hardware (RTS/CTS) and software (Xon/Xoff) flow control

UARTs (Universal Asynchronous Receiver Transmitter) Applications

• High-speed modem applications requiring fast data processing
• Shared network environments needing reduced CPU bandwidth
• Industrial communication systems operating in wide temperature ranges

UARTs (Universal Asynchronous Receiver Transmitter) Procurement Notes

Verify the specific ordering suffix against manufacturer documentation to confirm package type and pin configuration. Ensure compatibility with system voltage requirements and interface modes before integration. Cross-reference datasheet revisions to validate feature availability and electrical specifications.

UARTs (Universal Asynchronous Receiver Transmitter) Selection Notes

Select this component when multiple independent serial channels are required within a single footprint. Consider the HVQFN48 package constraints where only Channel C provides full modem pins. Verify that the external processor can support the selected bus interface mode (Intel or Motorola).

UARTs (Universal Asynchronous Receiver Transmitter) Part Context

This part belongs to the SC16C654B/654DB family of quad UARTs. It is functionally equivalent to industry-standard devices like the ST16C654 and TL16C754. The IB designation indicates the LQFP/HVQFN package variants within the broader series.

UARTs (Universal Asynchronous Receiver Transmitter) Replacement Considerations

Pin-compatible replacements include the SC16C654BIA68 (PLCC68) and SC16C654BIB64 (LQFP64). Verify that the substitute package maintains the necessary modem pin assignments for all active channels.