NXP 74AHC595PW

Mfr. Part

74AHC595PW

Manufacturer

Freescale / NXP Semiconductors

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Detailed Description

High-speed 8-bit serial-in/parallel-out shift register with output latches and 3-state outputs. Designed in AHC logic for fast switching and low power across a wide supply range. Ideal for expanding microcontroller GPIO through SPI-like interfaces. Package is TSSOP-16 (suffix PW). Current stock availability: 321,293 units.

Key Features

8-bit shift register with storage (latch) stage for stable outputs

Serial data input (SER), shift clock (SRCLK), latch clock (RCLK)

3-state parallel outputs QA–QH for easy bus sharing

Cascade output QH’ for daisy-chaining multiple devices

Wide supply range: typically 2.0 V to 5.5 V (CMOS-level inputs)

High-speed AHC CMOS technology with short propagation delays

Asynchronous master reset (MR) to clear the register fast

Output enable (OE) for global 3-state control

Low static power; robust ESD structures per standard logic practices

Key Advantages

Simple and cost-effective digital I/O expansion for MCUs and FPGAs

Reduces pin count and routing complexity in densely populated designs

Small TSSOP-16 footprint saves board space

Works in both 3.3 V and 5 V systems

Easy to chain for larger bit-widths (16, 24, 32 bits, and beyond)

Fast enough for LED multiplexing, display driving, and high-speed control

Broad vendor ecosystem and drop-in alternatives

Packaging

Type: TSSOP-16 (PW suffix), gull-wing leads

Material: Epoxy molding compound body; matte-tin plated copper leads (lead-free, RoHS)

Size (typical TSSOP-16): body ~5.0 mm (L) × 4.4 mm (W) × 1.2 mm (H); lead pitch ~0.65 mm; overall lead span ~6.4 mm

Pin configuration (functional): QA–QH outputs, QH’ cascade output, SER (serial data in), SRCLK (shift clock), RCLK (latch clock), OE (output enable), MR (reset), VCC, GND

Thermal characteristics (typical for TSSOP-16): good thermal performance in free air; use solid ground and copper for heat spreading; consult datasheet for θJA/θJC values and derating

Electrical properties (family typical): VCC 2.0–5.5 V; CMOS input thresholds proportional to VCC; fast edge rates; output drive sufficient for logic-level loads and moderate LED currents through resistors; verify exact output current limits and timing in the datasheet

Lifecycle

Status: Active and widely used in production designs; not nearing discontinuation based on current market availability

Equivalent or alternative models (verify pinout, timing, and electrical limits before substitution):

- Nexperia 74AHC595PW (same function, same package family)

- Nexperia 74HC595PW (HC variant, slower; same footprint)

- Nexperia 74AHCT595PW (AHCT variant for TTL-level inputs; same footprint)

- Texas Instruments SN74AHC595PW (TSSOP-16)

- Texas Instruments SN74HC595PW (TSSOP-16)

- STMicroelectronics M74HC595T or M74HC595YT (TSSOP-16 options)

- Toshiba TC74HC595FT (TSSOP-16)

- ON Semiconductor / onsemi HC595 family (check package options; some are SOIC—select TSSOP if needed)

If a direct equivalent in your required grade, package, or temperature range is not listed, please contact our sales team via the Y-IC website for tailored recommendations.

Key Application Areas

Microcontroller and FPGA GPIO expansion

LED and indicator driving (with series resistors or external drivers)

Display and keypad scanning

Relay, solenoid, and small load control (use transistors or drivers for higher currents)

Industrial control panels and instrumentation

Consumer electronics and appliance control

Test equipment signal routing and pattern generation

Datasheet

Y-IC hosts the most authoritative datasheet for 74AHC595PW on our product page. We recommend downloading the datasheet here to get exact electrical limits, timing, pinout, and layout guidance.

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