Texas Instruments SN74HC595DR 8-Bit Shift Register SOIC-16

The Texas Instruments SN74HC595DR is a high-performance, serial-in, parallel-out 8-bit shift register with 3-state output registers. It incorporates an 8-bit serial-in, parallel-out shift register that feeds an 8-bit D-type storage register, providing flexible data handling. The storage register features parallel 3-state outputs, allowing for direct bus interfacing. Separate clock inputs are provided for the shift and storage registers, enabling precise control over data latching and shifting operations.

A key feature is the direct overriding clear (SRCLR) input, which resets the shift register. It also includes a serial (SER) input and serial outputs for easy cascading of multiple devices, enabling the expansion of output ports. When the output-enable (OE) input is held high, all outputs enter a high-impedance state, preventing bus contention. The device is designed for a wide operating voltage range from 2V to 6V, making it versatile for various system voltages.

Performance and Features

• High-Current Outputs: The 3-state outputs can drive up to 15 Low-Power Schottky (LSTTL) loads, providing strong signal integrity.
• Low Power Consumption: Designed for efficient operation, minimising overall system power draw.
• High Speed: Features a fast 13ns typical propagation delay (TPD).
• Output Drive: Capable of ±6mA output drive at 5V.
• Green Product: Manufactured with no antimony or bromine (Sb/Br) in compliance with environmental standards.

This IC is supplied in a compact SOIC-16 surface-mount package, ideal for space-constrained PCB designs. It operates reliably across an industrial temperature range from -40°C to +85°C, suitable for demanding environments. Due to its MOS technology, care must be taken during handling as it has limited built-in ESD protection; leads should be shorted together or the device stored in conductive foam to prevent electrostatic damage to