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Product Detailed Parameters
- Description：IC UART CMOS DUAL 44PLCC
- Series：-
- Mfr：MaxLinear, Inc.
- Package：Tape & Reel (TR)
- Features：Internal Oscillator, Timer/Counter
- Number of Channels：2, DUART
- FIFO's：3 Byte
- 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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Overview
The XR88C681JTR-F is a dual-channel UART interface IC manufactured by MaxLinear, Inc. It features two independent full-duplex communication channels capable of data rates up to 1 Mbps. The device operates on a single 5V supply voltage and includes an internal oscillator and timer/counter functions. Packaged in a 44-pin PLCC (16.59x16.59 mm) surface-mount format, it supports Intel bus compatibility. The component is classified as a CMOS DUART with RoHS3 compliance.
Feature Summary
- Dual independent full-duplex serial communication channels
- Internal oscillator and timer/counter integration
- Intel bus mode support for system compatibility
Applications
- Industrial control systems requiring serial connectivity
- Embedded computer interfaces
- Communication equipment utilizing standard UART protocols
Procurement Notes
Verify the specific suffix JTR-F against current manufacturer documentation to confirm package type and tape-and-reel specifications. Confirm RoHS3 status and moisture sensitivity level requirements prior to procurement. Check for active discontinuation notices or product change notifications from MaxLinear, as availability may be restricted.
Selection Notes
Select this component when a dual-channel UART solution with integrated timing functions is required for 5V logic systems. Ensure the design accommodates the 44-PLCC footprint and thermal characteristics. Verify that the target application does not require higher baud rates than 1 Mbps or additional channel counts provided by quad-channel alternatives like the XR82C684 series.
Part Context
This part belongs to the XR88C681 family of CMOS Dual Channel UARTs originally developed by Exar Corporation and later acquired by MaxLinear. It serves as a legacy interface solution for parallel port expansions and serial communication modules in industrial and computing environments.
Replacement Considerations
Publicly confirmed substitutes include the XR88C681CJ and other variants within the XR88C681 series. Cross-reference pinouts and electrical specifications carefully before substitution.
