Nexperia USA Inc. 74HC4094D-Q100J

Overview

74HC4094D-Q100 from Nexperia is an AEC-Q100 Grade 1 qualified 8-bit serial-in/parallel-out shift-and-store bus register with independent shift/storage clocks, 3-state outputs, and dual serial outputs (QS1/QS2) for daisy-chain cascading in automotive control modules. It operates from -40 °C to +125 °C, supports 2–6 V supply, and delivers <30 ns propagation delay at 4.5 V.

For engineers reviewing the 74HC4094D-Q100 datasheet, 74HC4094D-Q100 pinout, 74HC4094D-Q100 application, or 74HC4094D-Q100 equivalent, this device serves as a robust serial-to-parallel interface for LED matrix drivers, multiplexed sensor arrays, and distributed I/O expansion where automotive-grade reliability, low static current (<160 μA), and precise timing control are required.

Technical Context

This device implements two synchronized but independently clocked 8-bit registers: a shift register accepting serial data on CP rising edges, and a storage register loaded via STR high pulse. QS1 provides immediate output of stage-6 data on each CP↑, while QS2 delivers the same data one CP edge later-enabling flexible inter-device synchronization across fast or slow clock edges.

The 3-state parallel outputs (QP0–QP7) are enabled by OE, with no effect on internal register states. Input clamp diodes allow safe interfacing to voltages beyond VCC using external current-limiting resistors, and CMOS-level inputs ensure compatibility with 3.3 V and 5 V logic families.

Key Specifications

Pinout & Package

Package: SO16 (SOT109-1), plastic small outline, 16-pin, 3.9 mm body width, lead pitch 1.27 mm.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74HCT4094D-Q100, the HC variant offers higher noise immunity in mixed-signal automotive domains; compared with SN74HC595QPWRQ1, the dual QS outputs and independent STR/CP clocks provide superior deterministic timing control for safety-critical display and actuator sequencing.

Availability

74HC4094D-Q100 is available at Aetrix Electronics and suitable for automotive body control units, LED lighting systems, and sensor interface modules requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74HC4094D-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, reliable logic, discrete, and MOSFET solutions optimized for automotive, industrial, and consumer applications.

The 74HC4094-Q100 belongs to Nexperia's automotive-qualified logic portfolio, engineered specifically for robust serial data distribution in harsh-temperature, high-reliability vehicle subsystems.

FAQ

What is the maximum clock frequency supported by the 74HC4094D-Q100?

The device supports up to 24 MHz at 4.5 V and 20 MHz at 125 °C ambient, verified per dynamic characteristics Table 7. This is determined by the CP-to-QPn propagation delay (max 49 ns at -40 °C to +125 °C), not by fmax ratings alone. System-level timing must account for setup/hold margins relative to STR and OE transitions.

Can QS1 and QS2 be used simultaneously to drive separate downstream devices?

Yes - QS1 and QS2 are electrically independent outputs sourced from the same internal node (QP6), with QS1 aligned to CP↑ and QS2 delayed by one CP edge. They may drive separate shift registers or logic paths, provided load capacitance remains ≤50 pF per output to maintain specified timing.

How does the STR input interact with ongoing serial shifting?

STR is asynchronous and edge-independent: a HIGH pulse transfers the current 8-bit content of the shift register into the storage register regardless of CP activity. Shifting continues uninterrupted - STR does not pause or reset the shift register, enabling concurrent data loading and output latching.

Is external pull-up or pull-down required on OE or STR pins in automotive applications?

No - OE and STR have no internal pull resistors, but their default state must be defined externally per system safety requirements. In fail-safe designs, OE is typically held LOW via 10 kΩ pull-down to force outputs into high-impedance during power-up or reset; STR is pulled HIGH only during intentional latch events.