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Product Detailed Parameters
- Description：IC UART CMOS QUAD 44PLCC
- Series：-
- Mfr：MaxLinear, Inc.
- Package：Tube
- Features：Internal Oscillator, Timer/Counter
- Number of Channels：4, QUART
- 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 XR82C684CJ/44-F is a quad Universal Asynchronous Receiver and Transmitter (UART) interface integrated circuit manufactured by MaxLinear. It features four independent full-duplex asynchronous communication channels with 3-byte transmit and receive FIFOs for each channel. The device operates at data rates up to 1 Mb/s and supports both Intel and Motorola bus interfaces. It functions within a supply voltage range of 4.75 V to 5.25 V, with a typical operating voltage of 5 V. The component draws 15 mA of operating current and exhibits a propagation delay of 400 ns. It is housed in a PLCC-44 surface-mount package and is rated for an industrial temperature range from 0°C to +70°C.
Feature Summary
- Integrates four fully independent full-duplex asynchronous communication channels
- Includes 3-byte transmit and receive FIFOs per channel to enhance throughput
- Supports compatibility with both Intel and Motorola system buses
Applications
- Industrial control systems requiring multiple serial communication ports
- Embedded computer systems utilizing standard UART protocols
- Data acquisition equipment needing reliable asynchronous serial I/O
Procurement Notes
This component is officially listed as End-of-Life (EOL) by the manufacturer. Distribution availability is restricted, with major distributors indicating non-sale status in various regions. Verification of authenticity and condition is critical when sourcing from secondary markets due to discontinuation status.
Selection Notes
Designers should evaluate alternative components due to the EOL status of this part. Considerations must include pin compatibility with the PLCC-44 package and functional equivalence regarding the 3-byte FIFO depth and bus interface support. Verify that replacement options meet the specific 5V logic level requirements and thermal specifications.
Part Context
The XR82C684CJ/44-F belongs to the XR82C684 series of VLIO UARTs produced by MaxLinear, formerly Exar Corporation. This series is designed for high-performance serial communication in embedded applications. The CJ suffix indicates the commercial temperature grade and plastic leaded chip carrier packaging.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided documentation. Engineers must consult MaxLinear or distributor technical support for qualified cross-reference recommendations compatible with the PLCC-44 footprint.
