Nexperia USA Inc. 74LVC594APW-Q100J

Overview

74LVC594APW-Q100 from Nexperia is an automotive-qualified 8-bit serial-in/parallel-out shift register with separate shift and storage registers, dual clock inputs (SHCP and STCP), active-low reset pins (SHR and STR), Schmitt-trigger inputs, IOFF partial power-down support, and operates from 1.2 V to 3.6 V supply. It enables cascaded serial-to-parallel data conversion in automotive lighting control and body electronics.

For engineers reviewing the 74LVC594APW-Q100 datasheet, 74LVC594APW-Q100 pinout, 74LVC594APW-Q100 application, or 74LVC594APW-Q100 equivalent, key selection criteria include its AEC-Q100 Grade 1 qualification, -40 °C to +125 °C operation, overvoltage-tolerant 5.5 V inputs, TSSOP16 package with side-wettable flanks, and dual-register timing isolation for glitch-free output latching.

Technical Context

The device implements two independent synchronous registers: an 8-stage shift register clocked by SHCP (data shifted on LOW-to-HIGH transition) and an 8-bit storage register clocked by STCP (data transferred on LOW-to-HIGH transition). Reset signals SHR and STR operate asynchronously and independently-SHR clears only the shift register, STR clears only the storage register.

Its IOFF circuitry disables outputs during power-down to prevent backflow current, while Schmitt-trigger inputs tolerate slow-rising/falling waveforms in noisy automotive environments. Input voltage tolerance up to 5.5 V allows interoperability with 5 V logic in mixed-voltage systems without level-shifting.

Key Specifications

Pinout & Package

TSSOP16 plastic thin shrink small outline package; 16 leads; body width 4.4 mm (SOT403-1).

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LV8154IPWREP and 74LVC595AQ-Q100, the 74LVC594APW-Q100 uniquely provides independent asynchronous reset for shift and storage registers, AEC-Q100 Grade 1 compliance, and IOFF protection - essential for fail-safe automotive output staging.

Availability

74LVC594APW-Q100 is available at Aetrix Electronics and suitable for automotive LED lighting control, body control module (BCM) output expansion, and instrument cluster display driver applications requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74LVC594APW-Q100 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, discrete, and MOSFET solutions optimized for efficiency, reliability, and manufacturability in high-volume applications.

The 74LVC594A-Q100 belongs to Nexperia's automotive-qualified LVC logic family, designed specifically for robust serial-to-parallel data conversion in safety-critical vehicle subsystems operating across extreme temperatures.

FAQ

Can 74LVC594APW-Q100 operate with a 5 V microcontroller driving its inputs?

Yes - its inputs tolerate up to 5.5 V regardless of VCC level (1.2 V to 3.6 V), enabling direct connection to 5 V MCUs without level shifters. This overvoltage tolerance is specified in Table 5 and validated per JEDEC JESD8 standards, making it ideal for mixed-voltage automotive designs.

What is the purpose of separate SHR and STR pins?

SHR asynchronously clears only the 8-bit shift register, leaving the storage register (and thus Q0–Q7 outputs) unchanged. STR clears only the storage register, preserving shift register contents. This isolation prevents unintended output changes during serial loading - critical for glitch-free LED or relay control in automotive systems.

Does the TSSOP16 package support automated optical inspection (AOI)?

Yes - the SOT403-1 package features side-wettable flanks, allowing AOI systems to inspect solder joint quality on all 16 terminals. This capability is explicitly cited in Section 2 of the datasheet and supports zero-defect manufacturing requirements for automotive electronics.

How does IOFF functionality protect the device during power sequencing?

When VCC drops to 0 V, the IOFF circuit forces all outputs into high-impedance state, blocking reverse current flow from live 5 V buses into the unpowered IC. This prevents latch-up and damage in multi-rail systems - verified by ≤20 μA leakage (Table 6) and compliant with JEDEC JESD78.