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XR16L788CQ-F
XR16L788CQ-F
| Part Number | XR16L788CQ-F |
|---|---|
| Manufacturer | MaxLinear (Exar) |
| Category | Integrated Circuits (ICs) > Interface – UARTs (Universal Asynchronous Receiver Transmitter) |
| Description | 2.97V to 5.5V Octal (8-Channel) UART with 64-Byte Transmit and Receive FIFOs, Intel/Motorola Bus Interface, Auto RS-485 Control, 100-QFP Package. Discontinued (EOL). |
| Stock Status | In Stock |
| Origin | Original Factory |
Product Overview
The XR16L788CQ-F, manufactured by MaxLinear (formerly Exar), is an integrated octal UART designed for multi-channel serial communication. It features eight independent full-duplex channels supporting up to 6.25 Mbps. Each channel comes with a 64-byte TX/RX FIFO to reduce CPU load. It supports pin-selectable Intel/Motorola bus interface, automatic hardware & software flow control and auto RS-485 direction control. Packaged in 100-QFP with commercial temperature range of 0°C ~ +70°C, it is ideal for industrial serial equipment, multi-port serial adapters and embedded network systems. This part is discontinued (EOL).
Core Advantages
8 High-Performance Independent Channels
Integrates 8 complete UART channels on a single chip, shrinking PCB size and simplifying multi-serial interface expansion.
Deep 64-Byte TX/RX FIFOs
Independent 64-byte transmit and receive buffers prevent data overflow and lower host interrupt frequency.
Wide Compatibility & Flexible Bus
Supply voltage 2.97V to 5.5V, with selectable Intel or Motorola bus to match various host controllers.
Built-in Serial Control Logic
Supports automatic RTS/CTS, Xon/Xoff flow control and auto RS-485 half-duplex direction control for stable serial transmission.
Key Specifications
| Brand | MaxLinear / Exar |
|---|---|
| RoHS Status | RoHS Compliant / Lead-Free / Green (“-F” suffix) |
| EDA/CAD Model | Schematic symbol models, 3D CAD step profiles, and 100-QFP PCB footprint land patterns are available on request |
| Warranty | 1-Year Standard Quality Warranty |
| Package / Case | 100-QFP (14.0 mm × 20.0 mm) |
| Mounting Type | Surface Mount (SMT / SMD) |
| Surface Marking / Silkscreen | 16L788CQ Marking |
| Device Type | Octal Universal Asynchronous Receiver Transmitter (UART) |
| Number of Channels | 8 Channels (Octal UART) |
| FIFO Depth | 64 Bytes TX + 64 Bytes RX per Channel |
| Maximum Data Rate | Up to 6.25 Mbps at 5.0V |
| Supply Voltage (VCC) | 2.97V to 5.5V |
| Bus Interface | Selectable Intel or Motorola Parallel Bus |
| Supported Protocol | RS-232, RS-485, IrDA Encoder / Decoder |
| Features | Auto RTS/CTS Flow Control, Auto Xon/Xoff, Auto RS-485 Bus Direction Control |
| Interrupt | Global Interrupt Output, Programmable Interrupt Trigger Level |
| Operating Temperature Range | 0°C to +70°C (Commercial Grade) |
| Product Status | Discontinued (EOL) |
| Packaging Format | Tray / Bulk |
Typical Applications
- Multi-port RS-232 / RS-422 / RS-485 communication expansion cards
- Industrial automation controllers, PLCs, and remote terminal units (RTUs)
- Telecommunication routers, cellular base stations, and network access gateways
- Point-of-Sale (POS) terminals, barcode scanners, and commercial receipt printers
- Embedded computer systems, industrial PCs, and instrumentation platforms
Order & Shipping Info
| Minimum Order Quantity (MOQ) | 1 Piece |
|---|---|
| Shipping Time | Shipped within 1-2 business days |
| Delivery Time | 3-7 working days worldwide |
| Shipping Methods | DHL, UPS, FedEx, EMS |
| Payment Methods | T/T (Bank Transfer), PayPal, Credit Card, Western Union |
Technical Support
For datasheet, sample requests, stock check, or bulk pricing, please use the Quick Inquiry form. We will reply within 24 hours.
Frequently Asked Questions
Q1: What does the “-F” suffix in XR16L788CQ-F stand for?
A: The “-F” suffix means lead-free manufacturing and full RoHS compliance.
Q2: Can XR16L788CQ-F work with both 3.3V and 5V MCU?
A: Yes. Its operating voltage is 2.97V to 5.5V, compatible with 3.3V and 5V host platforms.
Q3: How does Auto RS-485 Direction Control function?
A: The chip automatically controls the RTS pin according to TX FIFO data, realizing half-duplex RS-485 switch without extra software code.
Q4: What is the difference between XR16L788CQ-F and XR16L788IQ-F?
A: XR16L788CQ-F: commercial grade 0°C~+70°C. XR16L788IQ-F: industrial grade -40°C~+85°C. Same pinout and package size.
Q5: Is XR16L788CQ-F still in production?
A: This model is Discontinued (EOL). Only limited stock available on the market.
Q6: Are there recommended alternative parts for XR16L788CQ-F?
A: You can evaluate XR16L788IQ-F or other multi-channel UART solutions according to your temperature and project demands.
Q7: What is the advantage of built-in 64-byte TX/RX FIFO?
A: FIFOs reduce CPU interrupt frequency, avoid packet loss and improve stability under high baud rate transmission.
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