XC95108-10PQ160I: High-Performance CPLD from AMD Xilinx Complete Guide

The XC95108-10PQ160I by AMD Xilinx is a premium Complex Programmable Logic Device (CPLD) engineered for high-speed digital logic applications. As part of the renowned XC9500 family, this IC delivers exceptional flexibility with in-system programmability, making it a preferred choice for prototyping and industrial designs despite its obsolete status. This in-depth guide covers its technical specifications, architectural advantages, and real-world applications to help engineers evaluate its suitability for their projects.

Product Overview and Key Features

Advanced Architecture

• Logic Resources: 6 programmable logic blocks with 108 macrocells (18 per block) and 2,400 equivalent gates.
• Speed: 10ns maximum propagation delay (t_pd) at 5V operation, enabling clock frequencies up to 100MHz.
• I/O Flexibility: 108 user I/O pins with 5V TTL compatibility and 24mA drive strength.

In-System Programmability (ISP)

Supports >10,000 reprogramming cycles via IEEE 1149.1 JTAG interface, allowing field updates without physical removal.

Power and Environmental Specs

• Voltage Range: 4.5V to 5.5V operation with 55mA typical standby current.
• Temperature Range: Industrial-grade -40 C to +85 C operation.
• Package: 160-pin PQFP (28 28mm) with excellent thermal performance.

Technical Deep Dive

Logic Block Structure

Each of the 6 Function Blocks contains:

• 18 macrocells with programmable AND/OR arrays
• Local feedback paths for sequential logic
• Dedicated clock and reset resources

Macrocell Details

Individual macrocells feature:

• Programmable D/T flip-flops
• Asynchronous set/reset
• Clock enable functionality
• Dual output capability (combinatorial + registered)

Applications and Use Cases

Industrial Systems

Widely used in:

• Motor control interfaces
• PLC I/O expansion
• Sensor data conditioning

Communication Interfaces

Ideal for:

• UART/SPI/I2C protocol bridging
• Bus arbitration logic
• Glue logic for processor subsystems

Legacy System Maintenance

Critical for:

• Military/aerospace equipment
• Medical device upgrades
• Industrial automation retrofits

Design Considerations

Power Management

Recommendations:

• Use 0.1 F decoupling capacitors per power pair
• Implement power-on reset circuitry
• Consider thermal relief patterns for PQFP soldering

Migration Options

For new designs, consider:

• Xilinx CoolRunner II series (lower power)
• Lattice ispMACH 4000ZE (pin-compatible options)

Why Choose Our XC95108-10PQ160I?

We specialize in hard-to-find obsolete components with:

• Authentic AMD Xilinx parts with full traceability
• Same-day shipping for urgent requirements
• Technical support for legacy system integration

Conclusion

The XC95108-10PQ160I remains a powerful CPLD solution for 5V systems requiring robust programmable logic. While newer alternatives exist, its combination of speed, density, and reliability continues to serve critical applications worldwide. Our inventory ensures continued access to this industry workhorse with guaranteed quality and support.