Collection: PLDs (Programmable Logic Device)

Programmable Logic Devices (PLDs) - Configurable Logic Solutions for Industrial & Embedded Systems

Discover our comprehensive selection of Programmable Logic Devices (PLDs) designed for high-reliability applications in aerospace, automotive, industrial automation, telecommunications, and embedded control systems. These non-volatile, field-programmable ICs deliver flexible AND/OR logic configurations, enabling rapid prototyping, reduced component counts, and simplified circuit design without the complexity of FPGAs.

Key Features & Benefits

• Non-Volatile Configuration: Retain programmed logic even after power cycling—ideal for mission-critical applications
• Flexible Logic Architecture: Configurable AND/OR arrays enable custom combinational and sequential logic functions
• On-Chip Memory Integration: Built-in registers and flip-flops reduce external component requirements
• Rapid Prototyping: Field-programmable capability accelerates design iterations and time-to-market
• Lower Power Consumption: Optimized for battery-powered and energy-efficient embedded systems
• Cost-Effective Alternative: Simpler and more economical than FPGAs for moderate-complexity logic tasks
• Industrial & Automotive Grades: Extended temperature ranges and qualification standards for harsh environments

PLD Types & Architectures

Our PLD inventory includes multiple device families to match diverse application requirements:

• SPLDs (Simple PLDs): PAL (Programmable Array Logic) and GAL (Generic Array Logic) devices for basic combinational logic
• CPLDs (Complex PLDs): Multiple logic blocks with interconnect matrices for advanced state machines and control logic
• High-Density CPLDs: Thousands of macrocells for complex digital designs requiring deterministic timing

Critical Applications

PLDs excel in applications requiring custom logic functions, glue logic, state machines, and interface control:

• Industrial Automation: PLC I/O expansion, motor control logic, and sensor interface circuits
• Automotive Systems: Body control modules, dashboard controllers, and safety system logic
• Aerospace & Defense: Avionics control logic, guidance systems, and mission-critical state machines
• Telecommunications: Protocol converters, interface adapters, and network equipment control logic
• Medical Devices: Instrument control logic, safety interlocks, and diagnostic equipment interfaces
• Consumer Electronics: Custom peripheral controllers and interface logic for embedded systems

PLDs vs. FPGAs: Choosing the Right Solution

While FPGAs offer higher gate counts and advanced features, PLDs provide distinct advantages for many embedded applications:

• Deterministic Timing: Predictable propagation delays simplify timing analysis
• Non-Volatile Storage: No external configuration memory or boot-up sequence required
• Lower Cost: More economical for moderate-complexity logic functions (typically under 10,000 gates)
• Simpler Design Flow: Faster learning curve and shorter development cycles
• Instant-On Operation: No configuration delay at power-up—critical for real-time control systems

Technical Specifications

Our PLD catalog features devices from leading semiconductor manufacturers with specifications including:

• Macrocell counts: 32 to 512+ macrocells
• Propagation delay: 3.5ns to 15ns
• I/O pins: 24 to 256+ user I/Os
• Voltage ranges: 1.8V, 2.5V, 3.3V, 5.0V
• Package options: PLCC, TQFP, QFN, BGA
• Programming: In-System Programmable (ISP) and JTAG support
• Temperature grades: Commercial, Industrial (-40°C to +85°C), Automotive (-40°C to +125°C)

Design & Development Support

Most PLDs are supported by free or low-cost development tools from manufacturers, including schematic capture, VHDL/Verilog synthesis, simulation, and programming utilities. This accessibility makes PLDs an excellent choice for engineers seeking configurable logic without significant toolchain investment.

Why Choose PLDs for Your Design?

PLDs remain highly relevant in modern embedded systems where simplicity, reliability, and cost-effectiveness are paramount. They bridge the gap between discrete logic ICs and complex FPGAs, offering the perfect balance for applications requiring custom logic functions without excessive gate counts or power budgets.

Expert Technical Support

Need assistance selecting the right PLD architecture for your application? Our semiconductor specialists can help you evaluate macrocell requirements, I/O configurations, and programming options. Visit our Contact Us page for personalized technical guidance and custom component sourcing.

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Explore our complete range of high-reliability semiconductors for aerospace, automotive, industrial, and telecommunications applications at HQICKEY, your trusted source for mission-critical electronic components.