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Product Detailed Parameters
- Description：IC UART CMOS DUAL 40DIP
- Series：-
- Mfr：MaxLinear, Inc.
- Package：Tube
- 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：Through Hole
- Package / Case：40-DIP (0.600", 15.24mm)
- Supplier Device Package：40-PDIP
- Grade：-
- Qualification：-
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Overview
The XR88C681CP/40-F is a dual-channel CMOS UART (DUART) manufactured by MaxLinear, Inc. It operates on a single 5V supply and supports data rates up to 1 Mbps. The component features an internal oscillator and integrated timer/counter capabilities. It is housed in a 40-pin Plastic Dual In-line Package (PDIP) with a standard 0.600-inch width. This device provides two independent full-duplex communication channels suitable for serial interface applications.
Feature Summary
- Dual independent full-duplex communication channels
- Integrated internal oscillator and timer/counter functions
- CMOS technology for low power consumption
Applications
- Industrial control systems requiring serial communication
- Embedded systems with multiple asynchronous data links
- Test and measurement equipment interfaces
Procurement Notes
Verify the specific suffix /40-F against official MaxLinear documentation to confirm temperature range and package variations. Confirm current availability status as legacy components may be discontinued or subject to last-time buy notices. Ensure compatibility with existing PCB footprints for 40-PDIP packages during procurement planning.
Selection Notes
Select this component when dual independent UART channels are required within a single IC footprint. Verify that the 5V logic level and 1 Mbps maximum data rate meet system requirements. Consider the PDIP package constraints if surface mount assembly is preferred, noting that PLCC variants exist within the same family.
Part Context
This part belongs to the XR88C681 series of dual UARTs from MaxLinear (formerly Exar). It serves as a direct replacement for older 82C681-compatible designs. The CP/40-F designation indicates the PDIP package variant. Other variants include PLCC packages such as the XR88C681CJ series for different board layout needs.
Replacement Considerations
Direct pin-to-pin replacements include other XR88C681 variants like the XR88C681CJ series in PLCC packages. Verify electrical specifications match exactly before substitution. Check for any lead-free or RoHS compliance updates in newer manufacturing runs.
