Nexperia USA Inc. 74HC595PW,112

Overview

74HC595PW,112 from Nexperia is an 8-bit serial-in/serial-or-parallel-out shift register with independent shift and storage registers, 3-state outputs, asynchronous master reset (MR), and dual clocks (SHCP, STCP). It operates from 2.0 V to 6.0 V, supports 100 MHz typical shift-out frequency, and functions across –40 °C to +125 °C - used for GPIO expansion in microcontroller-based LED matrix drivers and industrial I/O modules.

For engineers reviewing the 74HC595PW,112 datasheet, 74HC595PW,112 pinout, 74HC595PW,112 application, or 74HC595PW,112 equivalent, key selection criteria include its dual-clock latching architecture, TTL-compatible input option (74HCT595 variant), 3-state output control via OE, and TSSOP16 package suitability for high-density PCB layouts.

Technical Context

The device implements two synchronized but functionally separate 8-bit registers: a shift register accepting serial data on DS at SHCP edges, and a storage register loaded on STCP edges to drive parallel outputs Q0–Q7. The MR input asynchronously clears only the shift register, leaving stored data unaffected until next STCP.

Outputs are enabled or placed in high-impedance state solely by OE (active LOW), independent of register states. Input clamp diodes allow safe interfacing with voltages exceeding VCC when current-limiting resistors are used - critical for mixed-voltage system integration.

Key Specifications

Pinout & Package

TSSOP16 plastic thin shrink small outline package (SOT403-1); 16 leads; body width 4.4 mm; 0.65 mm pitch; exposed pad optional; RoHS compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 8-bit serial-to-parallel shift register applications.

Compared with SN74HC595PWR and 74HCT595PW,112, the 74HC595PW,112 delivers the highest shift clock frequency (100 MHz) and lowest propagation delay (15 ns), making it optimal for time-critical LED multiplexing and high-throughput I/O expansion where timing precision outweighs input voltage flexibility.

Availability

74HC595PW,112 is available at Aetrix Electronics and suitable for LED matrix drivers, microcontroller GPIO expanders, industrial I/O modules, and remote sensor interface hubs requiring stable component supply across automotive and industrial temperature ranges.

Supply support for 74HC595PW,112 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Nexperia is a global semiconductor expert delivering high-performance logic, analog, and MOSFET solutions with focus on efficiency, reliability, and miniaturization for automotive, industrial, and consumer applications.

The 74HC595 product line delivers robust, wide-supply-voltage shift registers optimized for GPIO expansion and serial-to-parallel conversion in space-constrained, thermally demanding embedded systems.

FAQ

What is the difference between SHCP and STCP in the 74HC595PW,112?

SHCP (shift clock) controls data entry into the 8-bit shift register on each LOW-to-HIGH transition, while STCP (storage clock) transfers the entire 8-bit content from the shift register to the output latches on its LOW-to-HIGH edge. This separation prevents output glitches during ongoing serial data loading - essential for stable display or I/O control.

Can the 74HC595PW,112 drive LEDs directly?

Yes - each Q0–Q7 output delivers ±35 mA at VCC = 4.5 V, sufficient to drive standard 20 mA LEDs with appropriate current-limiting resistors. The 3-state OE pin allows dynamic disabling to prevent ghosting in multiplexed arrays, and the –40 °C to +125 °C rating supports under-hood or factory-floor deployment.

How does the MR (master reset) pin affect operation?

MR is an asynchronous active-LOW input that clears only the shift register contents - the storage register and parallel outputs remain unchanged until the next STCP pulse. This enables selective reinitialization of incoming data streams without disrupting currently displayed or latched outputs.

Is the 74HC595PW,112 pin-compatible with the 74HCT595PW,112?

Yes - both share identical TSSOP16 pinout, package dimensions, and functional block diagram. The sole difference is input voltage thresholds: 74HC595 requires CMOS-level inputs (VIH ≥ 0.7×VCC), whereas 74HCT595 accepts TTL-level inputs (VIH ≥ 2.0 V), enabling direct interface with 5 V microcontrollers without level translation.