Nexperia USA Inc. 74LVC594APW,112

Overview

74LVC594APW,112 from Nexperia is an 8-bit serial-in/parallel-out shift register with separate shift and storage registers, Schmitt-trigger inputs, IOFF partial power-down capability, and operation from 1.2 V to 3.6 V supply. It supports cascading via Q7S serial output and enables synchronized parallel data latching via STCP. Used in LED matrix drivers and remote control holding registers where level translation between 3.3 V and 5 V logic is required.

For engineers reviewing the 74LVC594APW,112 datasheet, 74LVC594APW,112 pinout, 74LVC594APW,112 application, or 74LVC594APW,112 equivalent, this device delivers deterministic timing (tpd ≤ 7.7 ns at 3.6 V), overvoltage-tolerant inputs (5.5 V), and robust ESD protection (HBM > 2000 V), making it suitable for mixed-voltage industrial I/O expansion and noise-prone embedded control interfaces.

Technical Context

The 74LVC594APW implements dual synchronous register architecture: an 8-stage shift register clocked by SHCP (LOW-to-HIGH edge) and an independent 8-bit storage register clocked by STCP (LOW-to-HIGH edge). Reset pins SHR and STR operate asynchronously and independently - SHR clears only the shift register, STR clears only the storage register.

Its IOFF circuit disables outputs during power-down to prevent backflow current, while Schmitt-trigger inputs tolerate slow-rising signals and support direct interfacing with TTL-level sources. Cascading is enabled by Q7S, which outputs the shifted-out bit from stage 7, allowing daisy-chained configurations without external logic.

Key Specifications

Pinout & Package

TSSOP16 package (SOT403-1): plastic thin shrink small outline, 16 leads, 4.4 mm body width, 0.65 mm pitch, lead-free and RoHS compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 8-bit shift register with storage applications.

Compared with SN74LV8154N and 74HC595PW,118, the 74LVC594APW,112 uniquely combines dual-clock latching, IOFF, overvoltage tolerance, and sub-8 ns propagation - essential for deterministic real-time I/O expansion in modern low-voltage embedded systems.

Availability

74LVC594APW,112 is available at Aetrix Electronics and suitable for LED display drivers, industrial I/O expanders, remote control holding registers, and automotive body controller interfaces requiring stable component supply across extended temperature ranges.

Supply support for 74LVC594APW,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 optimized for efficiency, reliability, and miniaturization in industrial, automotive, and consumer applications.

The 74LVC594A belongs to Nexperia's LVC logic family - designed specifically for low-voltage, high-noise-immunity digital interfacing in space-constrained and thermally demanding environments.

FAQ

Can 74LVC594APW,112 be used with a 5 V microcontroller driving DS and clocks?

Yes. Its inputs tolerate up to 5.5 V regardless of VCC (1.2–3.6 V), enabling direct connection to 5 V MCUs without level shifters. The device interprets logic thresholds relative to its own VCC, and Schmitt-trigger action ensures clean signal recognition even with slow edges.

What happens to outputs when VCC is removed while inputs remain at 5 V?

The IOFF circuit activates automatically when VCC = 0 V, forcing all outputs into high-impedance state. This prevents back-current flow from 5 V inputs through the outputs, protecting both the 74LVC594APW,112 and upstream 5 V sources during power sequencing or fault conditions.

Is cascading multiple 74LVC594APW,112 devices supported in the datasheet?

Yes. The Q7S serial output is explicitly designed for cascading: it outputs the bit shifted out of stage 7, matching the DS input timing requirement. Datasheet Figure 1 and Section 1.1 confirm guaranteed cascadability under identical VCC and temperature conditions.

How does the dual-reset architecture (SHR and STR) improve system reliability?

SHR resets only the shift register, preserving latched outputs; STR resets only the storage register, leaving shift data intact. This enables independent error recovery - e.g., clearing corrupted serial input without disrupting active parallel outputs - critical in safety-monitored control systems.