XR88C681P/40-F

Overview

The XR88C681P/40-F is a CMOS Dual Universal Asynchronous Receiver and Transmitter (DUART) manufactured by MaxLinear, Inc. It features two independent full-duplex channels capable of data rates up to 1 Mb/s. The device operates on a single 5 V supply voltage with a minimum operating current of 1.5 mA. It utilizes a 40-pin Plastic Dual In-line Package (PDIP) for through-hole mounting. The operational temperature range spans from -40 °C to +85 °C. This component supports internal oscillators and timer/counters for flexible serial communication applications.

Feature Summary

• Dual independent full-duplex UART channels
• CMOS technology for low power consumption
• Integrated internal oscillator and timer/counters

Applications

• Industrial serial communication systems
• Embedded control interfaces
• Legacy computer peripheral connections

Procurement Notes

Verify the specific suffix 'P/40' confirms the 40-pin PDIP package variant. Confirm RoHS compliance status as the product lifecycle is marked as obsolete. Check for available last-time buy options or alternative sourcing channels due to discontinuation. Ensure compatibility with existing PCB footprints designed for standard DIP-40 components.

Selection Notes

Select this component when dual asynchronous serial ports are required in a through-hole configuration. Compare against the XR68C681CP if surface mount packaging is acceptable. Verify that the 1 Mb/s maximum data rate meets system requirements. Ensure the 5 V logic level matches the target microcontroller or processor interface voltages.

Part Context

This part belongs to the XR88C681 series of dual UARTs. It is functionally similar to the XR68C681 but differs in package type. The manufacturer has transitioned branding from Exar Corporation to MaxLinear, Inc. The device serves as a legacy interface solution for serial data transmission in industrial and embedded environments.

Replacement Considerations

The XR68C681CP is a direct functional substitute offering identical electrical characteristics in a 40-PDIP package. Verify pinout compatibility before substitution. Other family members like the XR88C681J may require package adaptation.