XR68C681CP-F

Overview

The XR68C681CP-F is a dual-channel UART interface integrated circuit manufactured by MaxLinear, Inc. It operates within a supply voltage range of 4.75 V to 5.25 V and supports data rates up to 1 Mbps. The device features an internal oscillator and timer/counter capabilities. It is housed in a 40-pin Dual In-Line Package (PDIP) with a standard width of 0.600 inches (15.24 mm). The component is classified as obsolete and is no longer in active production.

Feature Summary

• Dual asynchronous serial communication channels
• Integrated internal clock generation and timing functions
• CMOS technology for low power consumption

Applications

• Industrial control systems requiring serial I/O
• Embedded computer interfaces
• Legacy system maintenance and upgrades

Procurement Notes

This component is officially listed as obsolete by the manufacturer. Verification of authenticity is critical when sourcing from secondary markets. Buyers must confirm the specific package variant and revision level against original design specifications due to potential variations in legacy stock availability.

Selection Notes

Engineers should verify pin compatibility with existing PCB layouts before considering this part. Since the device is discontinued, alternative solutions or redesigns may be necessary for new products. Ensure that the 5V logic levels match the target system requirements.

Part Context

The XR68C681 series belongs to MaxLinear's VLIO UART family, designed for high-performance serial communication. This specific model represents the through-hole PDIP variant, distinct from surface-mount options like PLCC or LQFP packages found in the same product line.

Replacement Considerations

Publicly confirmed direct substitute part numbers are not available in the provided documentation. Engineers should consult MaxLinear for current recommended replacements or evaluate compatible UART controllers from other manufacturers.