XR17D154IV-F: Advanced Quad UART IC with RS485, IrDA, and Industrial-Grade Features

Product Overview

The XR17D154IV-F from MaxLinear represents the pinnacle of UART interface technology, combining four independent communication channels with industrial-grade reliability. This comprehensive guide explores why engineers worldwide trust this IC for mission-critical applications.

Technical Specifications Deep Dive

Unparalleled Communication Performance

• Quad-Channel Architecture: Four fully independent UART channels with dedicated 64-byte FIFOs
• Blazing-Fast Data Rates: Supports up to 6.25Mbps per channel (25Mbps aggregate bandwidth)
• Voltage Flexibility: Dual-voltage operation (3.3V and 5V) for system design versatility

Industrial Communication Protocols

The IC's RS485 transceivers feature:

• 15kV ESD protection on bus pins
• Fail-safe receiver inputs
• 1/8 unit load support (up to 256 nodes on bus)

Advanced Features Breakdown

Enhanced Data Integrity

• False Start Bit Detection: Advanced algorithms prevent noise-induced errors
• Programmable FIFO Triggers: 8-level interrupt settings for optimal CPU utilization
• Auto-RTS/CTS Flow Control: Hardware-managed data streaming

Wireless Connectivity Option

The integrated IrDA 1.1 encoder/decoder supports:

• 115.2kbps SIR mode
• 4Mbps FIR mode
• Low-power pulse stretching

Package and Thermal Characteristics

The 144-LQFP (20 20mm) package features:

• 0.5mm pin pitch for high-density PCB layouts
• Industrial temperature range (-40 C to +85 C)
• Low-power design (typ. 45mA at 3.3V)

Industry Applications

Industrial Automation

• PLC communication modules
• HMI interface controllers
• Motor control systems

Telecommunications

• Base station control interfaces
• Network monitoring systems
• PBX equipment

Embedded Systems

• Multi-port serial servers
• IoT gateway devices
• POS terminal interfaces

Design Considerations

Layout Recommendations

• Use 4-layer PCB with dedicated ground plane
• Place 0.1 F decoupling caps within 5mm of VCC pins
• Route RS485 pairs with 100 differential impedance

Software Implementation

• Register-compatible with industry-standard 16C550
• Linux driver support available
• Example code for interrupt-driven operation

Why Choose XR17D154IV-F?

Compared to competing solutions, the XR17D154IV-F offers:

• 30% lower power consumption than comparable quad UARTs
• 5 better ESD protection
• Unique combination of RS485 and IrDA in single package

Obsolete Part Notice

As this component has reached Last Time Buy status, we recommend:

• Immediate inventory assessment
• Consideration of drop-in replacement XR17V254
• Evaluation of our migration services

Technical Support Resources

MaxLinear provides:

• Reference designs (SCH/PCB/Layout)
• SPICE models for signal integrity analysis
• 24/7 engineering support

For complete datasheets, application notes, and design tools, visit our technical resource center or contact our applications engineering team.