SN74HC393D: High-Performance Dual 4-Bit Binary Counter IC by Texas Instruments

The SN74HC393D from Texas Instruments is a premium-grade dual 4-bit binary counter IC engineered for precision counting and timing applications. As part of the 74HC logic family, this integrated circuit delivers exceptional performance in digital systems requiring high-speed counting operations up to 36MHz. Its versatile design makes it indispensable for engineers working on frequency dividers, digital clocks, industrial automation, and data acquisition systems.

Comprehensive Product Overview

Manufacturer Specifications

• Manufacturer: Texas Instruments (Industry Leader in Semiconductor Solutions)
• Product Status: Active (Currently in Production)
• RoHS Compliance: Yes (Environmentally Friendly Design)

Technical Specifications

• Logic Type: Synchronous Binary Counter
• Number of Bits: Dual 4-Bit (Two Independent Counters)
• Trigger Type: Negative Edge-Triggered
• Count Rate: 36MHz Maximum Frequency
• Supply Voltage: Wide 2V to 6V Range (TTL Compatible)
• Operating Temperature: Industrial Grade (-40 C to +85 C)
• Package Type: 14-SOIC (Surface Mount, 3.90mm Width)

Key Features and Benefits

Advanced Counting Capabilities

The SN74HC393D features two fully independent 4-bit binary counters, each with individual clock inputs and asynchronous master reset functionality. This allows for:

• Simultaneous counting operations in complex systems
• Flexible cascading options for higher bit-count applications
• Precise frequency division up to 1:16 ratio per counter

High-Speed Performance

With a 36MHz maximum count rate, this IC outperforms many standard counters, making it ideal for:

• High-frequency clock generation
• Rapid event counting in measurement equipment
• Time-critical industrial control systems

Robust Design Features

• Asynchronous Reset: Immediate counter clearing without clock synchronization
• Negative Edge Triggering: Ensures precise timing in synchronous systems
• Wide Voltage Range: Compatible with 3.3V and 5V systems
• Low Power Consumption: HC technology for energy-efficient operation

Detailed Applications

Digital Timing Solutions

The SN74HC393D excels in digital clock generation and timing circuits, including:

• Programmable interval timers
• Real-time clock dividers
• Waveform generation systems

Industrial and Automation Systems

Industrial applications benefit from its reliability:

• Production line event counters
• Motor control pulse counters
• Process timing controllers

Consumer Electronics

Common uses include:

• Appliance timing controls
• LED display multiplexing
• Remote control code generation

Design Considerations

PCB Layout Recommendations

• Place decoupling capacitors within 5mm of VCC pin
• Minimize clock trace lengths to reduce noise
• Use ground planes for improved signal integrity

Thermal Management

While the 14-SOIC package provides excellent thermal characteristics:

• Maintain ambient temperature below 70 C for optimal performance
• Consider airflow in high-density designs

Why Choose SN74HC393D?

Compared to similar counters, the SN74HC393D offers:

• Higher speed than standard 4000 series counters
• Better noise immunity than basic TTL versions
• More features than single-counter alternatives
• Proven reliability from Texas Instruments

Purchasing Information

Available through authorized distributors worldwide. Typical delivery options include:

• Cut tape packaging for prototyping
• Reel packaging for production quantities
• Sample quantities for evaluation

Conclusion

The SN74HC393D represents the pinnacle of 4-bit binary counter technology, combining Texas Instruments' quality with advanced features for modern digital designs. Whether you're developing consumer electronics, industrial equipment, or cutting-edge technology, this IC delivers the performance, reliability, and flexibility needed for success in today's competitive market.

For engineers seeking a robust counting solution, the SN74HC393D offers:

• Unmatched 36MHz counting speed
• Dual-counter convenience
• Industrial temperature range operation
• Future-proof design capabilities

Upgrade your digital designs today with the SN74HC393D - the professional's choice for high-performance counting applications.