CD74HC595SM96G4

Updated: 2026-09-15

Overview

The CD74HC595SM96G4 is a high-speed CMOS logic IC designed as an 8-bit serial-in, serial or parallel-out shift register with output latches. It is part of the 74HC family, known for its compatibility with both TTL and CMOS logic levels. This IC is commonly used in applications requiring data expansion, such as driving LEDs, controlling displays, or interfacing with microcontrollers. Its compact SOIC-16 package makes it suitable for space-constrained designs, while its wide operating voltage range (2V to 6V) ensures flexibility in various electronic systems. The CD74HC595SM96G4 is manufactured by Texas Instruments and other semiconductor companies, adhering to industry standards for reliability and performance.

Structure and Working Principle

The CD74HC595SM96G4 consists of an 8-bit shift register and an 8-bit storage register with three-state outputs. Data is serially input through the DS (serial data input) pin and shifted through the register on each rising edge of the SHCP (shift register clock) pin. The stored data is then transferred to the output latches via the STCP (storage register clock) pin. The parallel outputs (Q0-Q7) can be enabled or disabled using the OE (output enable) pin, allowing for three-state operation. This feature is particularly useful for bus sharing in multiplexed applications. The IC also includes a reset function (MR pin) to clear the shift register, ensuring reliable initialization.

Key Features

The CD74HC595SM96G4 offers several key features that make it a popular choice for digital designs. Its high-speed operation (up to 100 MHz clock frequency) enables rapid data transfer, while its low power consumption (typical 80 µA standby current) makes it suitable for battery-powered devices. Additionally, the IC provides 15 mA output drive capability at 5V, allowing it to directly drive LEDs or other low-power loads. Its wide operating temperature range (-40°C to 85°C) ensures reliable performance in various environments. The CMOS design offers high noise immunity, reducing the likelihood of data corruption in electrically noisy conditions.

Application Areas

The CD74HC595SM96G4 finds extensive use in digital electronics, particularly where output expansion is needed. Common applications include LED matrix control, where multiple LEDs can be driven using minimal microcontroller pins. It's also used in seven-segment display drivers, providing an efficient way to multiplex multiple digits. In industrial automation, this IC serves in control systems for relay banks or sensor arrays. Consumer electronics applications include appliance control panels and entertainment lighting systems. The three-state outputs make it suitable for bus-oriented systems where multiple devices share common data lines.

Maintenance and Precautions

Proper handling of the CD74HC595SM96G4 is essential for optimal performance and longevity. Always follow ESD (electrostatic discharge) precautions during handling and installation, as CMOS devices are sensitive to static electricity. Use appropriate grounding straps and work surfaces when working with these components. Ensure the power supply voltage does not exceed the specified maximum (6V) to prevent damage. When designing circuits, include decoupling capacitors near the power pins to minimize noise. The outputs should not be short-circuited or connected directly to voltages outside the supply range. For unused inputs, tie them to either VCC or ground through appropriate resistors.

B2B Procurement Guide

When procuring CD74HC595SM96G4 ICs in bulk, consider several factors to ensure quality and cost-effectiveness. Verify the manufacturer's authenticity and check for authorized distributors to avoid counterfeit parts. The SOIC-16 package is the standard for this component, but confirm the exact packaging requirements for your application. Lead times can vary, especially for large quantities, so plan procurement accordingly. Some suppliers offer tape-and-reel packaging for automated assembly processes. Pricing typically decreases with larger order quantities, with 1,000-unit reels often offering the best value. Consider environmental compliance certifications (RoHS, REACH) if required for your market.