XR16V564IV

Overview

The XR16V564IV is a quad Universal Asynchronous Receiver/Transmitter (UART) integrated circuit manufactured by Sipex. It features four independent UART channels, each equipped with a 32-byte FIFO buffer to enhance data throughput and reduce CPU intervention. The device supports high-speed serial communication with data rates up to 2 Mbps. It operates within a standard CMOS voltage range and is housed in a 64-lead Plastic Quad Flat Package (PQFP-64). This component is designed for applications requiring multiple serial ports in a compact form factor.

Feature Summary

• Integrates four independent UART channels for multi-port serial communication
• Includes 32-byte FIFO buffers per channel to minimize processor overhead
• Supports data transmission rates up to 2 Mbps
• Utilizes standard CMOS technology for reliable operation

Applications

• Industrial control systems requiring multiple serial interfaces
• Communication gateways and protocol converters
• Embedded systems with multi-channel data logging needs
• Test and measurement equipment with serial I/O requirements

Procurement Notes

Verify the manufacturer source carefully, as Sipex assets were acquired by Exar and subsequently MaxLinear. Ensure the part number matches the specific package type (PQFP-64) and speed grade. Check for lead-free status if required by environmental regulations. Confirm availability from authorized distributors or surplus suppliers, noting that original Sipex branding may vary depending on the supply chain history.

Selection Notes

Select this component when four separate UART interfaces are needed in a single package. The 32-byte FIFO depth is suitable for moderate data rates up to 2 Mbps. Consider the PQFP-64 package size constraints. If higher speeds or more channels are required, evaluate alternative devices from the same family or newer generations. Ensure voltage levels match the system logic requirements.

Part Context

The XR16V564 series belongs to the family of high-performance UART controllers. The 'IV' suffix typically denotes the industrial temperature range and the PQFP-64 package variant. This part is part of a lineage of serial interface solutions originally developed by Sipex Corporation, which has undergone corporate acquisitions affecting brand naming and distribution channels.

Replacement Considerations

Direct replacements include other quad UARTs with similar FIFO depths and pinouts. Cross-reference with Exar or MaxLinear part numbers such as the EXAR16V564 series. Verify electrical compatibility and package dimensions before substitution. Generic UART ICs may require additional external components if they lack integrated FIFOs.