74HC595D SMD IC Shift Register 74595 SOIC16 nexperia 74HC595D,118

Product Overview:

The 74HC595 / 74HCT595 is an 8-bit serial-in, serial or parallel-out shift register that includes an integrated storage register and 3-state output buffers. It is a fundamental component for expanding the number of digital output pins on microcontrollers by using only three pins (Data, Clock, and Latch) to control eight output lines.

Core Specifications:

• Manufacturer: Nexperia

• Package Type: Available in various packages including DIP, SO, and TSSOP.

• Function: 8-bit Serial-to-Parallel Shift Register with Storage and 3-State Outputs.

• Input/Output: 8-bit serial input; serial or parallel output.

Features

• Dual-Register Architecture: Separates the "shift" register (where data is loaded bit-by-bit) from the "storage" register (which holds the current output state). This allows the outputs to remain stable while new data is being shifted in.

• 3-State Outputs: Outputs can be set to high-impedance (OFF-state) using the Output Enable (OE) pin, which is critical for bus-sharing applications.

• Cascadable: Includes a serial output pin (Q7S) that allows multiple 74HC595 chips to be chained together to control 16, 24, or more outputs using the same three microcontroller pins.

• Asynchronous Reset: A dedicated Master Reset (MR) pin allows for the immediate clearing of the internal shift register independently of other operations.

• Wide Supply Range: Operates reliably from 2.0V to 6.0V.

Applications

• I/O Expansion: The most common use case; controlling large LED arrays, relays, or segment displays using very few pins on a microcontroller.

• Digital Data Bus Buffering: Isolating signals and managing bus logic for high-speed digital systems.

• Cascaded Controller Arrays: Synchronized control of multiple actuators or switches in complex industrial automation.