XR68C681J-F

$7.47

Description：IC UART CMOS DUAL 44PLCC
Series：-

SKU:25b4d91f29bd Category: UARTs (Universal Asynchronous Receiver Transmitter) Brand: MaxLinear, Inc.

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Product introduction

Product Detailed Parameters

Description：IC UART CMOS DUAL 44PLCC
Series：-
Mfr：MaxLinear, Inc.
Package：Tube
Features：Internal Oscillator, Timer/Counter
Number of Channels：2, DUART
FIFO's：-
Protocol：-
Data Rate (Max)：1Mbps
Voltage - Supply：5V
With Auto Flow Control：-
With IrDA Encoder/Decoder：-
With False Start Bit Detection：-
With Modem Control：-
Mounting Type：Surface Mount
Package / Case：44-LCC (J-Lead)
Supplier Device Package：44-PLCC (16.59x16.59)
Grade：-
Qualification：-

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XR68C681J-F

Overview

The XR68C681J-F is a dual-channel Universal Asynchronous Receiver/Transmitter (UART) interface integrated circuit manufactured by MaxLinear, Inc. It functions as a serial I/O controller compatible with the Motorola MC68681 bus architecture. The device supports data transmission rates up to 0.125 MBps and operates on a single 5V supply voltage. It features an internal oscillator and timer/counter capabilities for precise baud rate generation. The component is housed in a 44-pin Plastic Leaded Chip Carrier (PLCC) package with J-leads, designed for surface-mount installation.

Feature Summary

Dual independent UART channels providing simultaneous asynchronous serial communication
Motorola MC68681 bus compatibility ensuring seamless integration into existing system architectures
Integrated internal oscillator and timer/counter for flexible clocking and baud rate configuration

Applications

Industrial control systems requiring robust serial communication interfaces
Embedded computer systems utilizing Motorola-compatible bus structures
Data acquisition equipment needing multiple asynchronous serial ports

Procurement Notes

Verify the specific suffix 'J' against the manufacturer's official documentation to confirm the exact package type and temperature range. Confirm RoHS compliance status through the latest datasheet revision. Check for End-of-Life notices or Product Change Notifications from MaxLinear prior to procurement planning.

Selection Notes

Select this component when a design requires two UART channels with direct Motorola bus compatibility. Ensure the PCB layout supports the 44-PLCC footprint dimensions of 16.59x16.59 mm. Verify that the system power supply provides a stable 5V rail, as the device does not support lower voltage operation compared to newer CMOS variants.

Part Context

This part belongs to the XR68C681 family of dual UART controllers produced by MaxLinear and its predecessor Exar Corporation. These devices are widely used in legacy and industrial applications where standard RS-232 or TTL serial interfaces are required. The family includes various package options such as PLCC, LQFP, and DIP to accommodate different form factors.

Replacement Considerations

The XR68C681CJ-F is a verified equivalent within the same series, offering identical functional specifications in a similar leaded package. Designers should verify pin-to-pin compatibility and ensure the replacement part meets the same environmental operating conditions.

How to buy

Online and offline orders are supported. If the item is available for online purchase, you can place it in the cart; for wholesale pricing, please contact our product manager for a quote.

Payment Method

Payment methods: T/T, WeChat Pay, credit cards, Google Pay, Apple Pay . Buyer covers shipping, fees, duties, and taxes; contact our product manager if you need a contract/procurement process.

Delivery time

In-stock items usually ship within 24 hours. Otherwise, shipment is arranged 1 to 2 days after the items arrive at our warehouse. Timing depends on destination and shipping method.

Freight calculation

Freight cost depends on destination, package size, and weight . We offer shipping options via DHL, FedEx, UPS, and TNT , and can ship using your freight account upon request.

Mode of Transportation

We ship via DHL, FedEx, UPS, and TNT. If you prefer a specific logistics provider, we can ship using your designated carrier.

Return and Refund

Returns are accepted within 60 days of invoice with RMA approval. Items must be resalable; original invoice and test report are required. No returns for customer errors.