Nexperia USA Inc. 74HC594D,112

Overview

74HC594D,112 from Nexperia is an 8-bit serial-in/parallel-out shift register with independent shift and storage registers, CMOS-level inputs, 2.0–6.0 V supply range, 100 MHz typical max clock frequency, and SO16 package. It enables serial-to-parallel data conversion in microcontroller I/O expansion and LED matrix drivers.

For engineers reviewing the 74HC594D,112 datasheet, 74HC594D,112 pinout, 74HC594D,112 application, or 74HC594D,112 equivalent, key selection criteria include independent SHCP/STCP timing control, active-low SHR/STR reset pins, Q7S cascading capability, and -40 °C to +125 °C operation for industrial embedded systems.

Technical Context

The device implements two synchronous 8-bit registers: a shift register accepting serial data on DS at each SHCP rising edge, and a storage register capturing shift register contents on each STCP rising edge. This dual-clock architecture decouples data shifting from output latching, enabling glitch-free parallel output updates.

Both registers feature dedicated asynchronous active-low reset pins (SHR and STR), allowing independent clearing without affecting the other register. Input clamp diodes support interfacing to voltages exceeding VCC when used with current-limiting resistors.

Key Specifications

Pinout & Package

74HC594D,112 uses the SO16 (SOT109-1) plastic small outline package: 16-pin, 3.9 mm body width, 1.27 mm pitch, surface-mount, JEDEC MS-012 compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74HCT594D,112, the 74HC594D,112 offers superior noise immunity and lower static power, while SN74HC595DR trades register flexibility for lower BOM cost and wider distributor stock - making it suitable only for basic I/O expansion without timing-critical latching.

Availability

74HC594D,112 is available at Aetrix Electronics and suitable for industrial automation controllers, automotive body control modules, and LED signage systems requiring stable component supply across extended temperature ranges.

Supply support for 74HC594D,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 sustainability.

The 74HC594 belongs to Nexperia's industry-standard logic portfolio, engineered for robust operation in harsh environments and designed to replace legacy 74-series components in modern low-power embedded systems.

FAQ

Can 74HC594D,112 operate reliably at 3.3 V?

Yes. The 74HC594D,112 is fully specified from 2.0 V to 6.0 V. At VCC = 3.3 V, VIH = 2.31 V (70% of VCC) and VOL ≤ 0.33 V with 6 mA load, ensuring clean interfacing with 3.3 V microcontrollers like ESP32 or Raspberry Pi Pico without level shifters.

What is the minimum pulse width required on SHCP and STCP?

At VCC = 4.5 V, the minimum high/low pulse width is 4 ns for both SHCP and STCP. However, design margin requires ≥20 ns per edge to ensure reliable operation across temperature and voltage extremes, per Nexperia's recommended operating conditions.

How does the Q7S output differ from Q7?

Q7S is the serial output of the shift register (stage 7), updated on every SHCP rising edge. Q7 is the parallel output of the storage register, updated only on STCP rising edge. Q7S enables cascading; Q7 reflects latched data visible to external circuitry.

Is thermal pad soldering required for SO16 package?

No. The SO16 (SOT109-1) package has no exposed thermal pad. Pin 1 index area and body construction are standard plastic leadframe; standard reflow profiles per J-STD-020 apply without thermal pad considerations.