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Product Detailed Parameters
- Description：IC UART CMOS DUAL 44PLCC
- Series：-
- Mfr：MaxLinear, Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- 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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Overview
The XR68C681CJTR-F is a dual-channel UART interface IC manufactured by MaxLinear, Inc. It operates on a single 5V supply and supports data rates up to 1 Mbps. The component is housed in a 44-PLCC package with dimensions of 16.59x16.59 mm. Key internal features include an integrated oscillator and timer/counter capabilities. The device is RoHS3 compliant and classified as EAR99 for export control purposes.
Feature Summary
- Dual independent UART channels for simultaneous serial communication
- Integrated internal oscillator eliminating external crystal requirements
- Built-in timer/counter functionality for precise baud rate generation
Applications
- Industrial automation systems requiring reliable serial I/O
- Embedded controllers needing dual asynchronous communication ports
- Legacy system interfaces utilizing MC68681 compatible protocols
Procurement Notes
Verify current availability status as the part may be subject to discontinuation notices. Confirm package integrity upon receipt, ensuring the 44-PLCC leads are undamaged. Check RoHS3 compliance documentation if required for specific regulatory environments. Validate that the ordering suffix matches the exact PLCC variant needed for the target PCB footprint.
Selection Notes
Select this component when dual UART functionality is required within a single package. Ensure the design accommodates the 44-pin PLCC form factor. Verify that the 5V logic levels align with the rest of the system bus. Consider the internal oscillator accuracy against external clock requirements for strict timing applications.
Part Context
This part belongs to the XR68C681 family of serial I/O controllers. It serves as a CMOS-compatible replacement for older NMOS-based controllers. The CJTR-F suffix indicates a tape-and-reel packaging format suitable for automated surface-mount assembly processes.
Replacement Considerations
Direct pin-compatible alternatives within the same family include the XR68C681CJ-F in cut-tape packaging. Cross-reference with MC68681 specifications for functional compatibility in legacy designs.
