Nexperia USA Inc. 74HC4094DB-Q100J

Overview

74HC4094DB-Q100 from Nexperia is an AEC-Q100 Grade 1 qualified 8-bit serial-in/parallel-out shift-and-store bus register with separate shift and storage clocks, 3-state outputs, and dual serial outputs (QS1/QS2) for daisy-chaining. It operates from -40 °C to +125 °C, supports CMOS-level inputs, and delivers 39 ns typical propagation delay (CP to QPn at VCC = 4.5 V), enabling robust serial-to-parallel data conversion in automotive body control modules.

For engineers reviewing the 74HC4094DB-Q100 datasheet, 74HC4094DB-Q100 pinout, 74HC4094DB-Q100 application, or 74HC4094DB-Q100 equivalent, key selection criteria include strobe-controlled parallel output latching, cascading capability via QS1/QS2 timing alignment, 3-state output enable behavior, and automotive-grade thermal and ESD robustness (HBM >2000 V).

Technical Context

This device implements two synchronous registers: an 8-stage shift register clocked on CP rising edges and an independent 8-bit storage register loaded on STR high. Data propagates through the shift register to QS1 on each CP↑ and to QS2 on the subsequent CP↓, enabling flexible cascade synchronization across fast- or slow-edge clock domains.

The parallel outputs (QP0–QP7) are 3-state controlled by OE, with output impedance unaffected by OE state changes. Input clamp diodes allow safe interfacing to voltages exceeding VCC when used with current-limiting resistors, supporting mixed-voltage system integration.

Key Specifications

Pinout & Package

SOT338-1 (SSOP16) plastic shrink small outline package; 16 leads; body width 4.4 mm - compact surface-mount footprint optimized for space-constrained automotive PCBs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74HC4094DB-Q100, the 74HC595D-Q100 simplifies cascade design but sacrifices timing adaptability, while the 74HCT4094DB-Q100 retains full functional equivalence with enhanced input voltage tolerance for mixed-logic systems.

Availability

74HC4094DB-Q100 is available at Aetrix Electronics and suitable for automotive body control units, LED matrix display drivers, remote keyless entry receivers, and seat position memory modules requiring stable component supply across extended temperature ranges.

Supply support for 74HC4094DB-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, analog, and discrete components with focus on automotive, industrial, and mobile applications.

The 74HC4094-Q100 series belongs to Nexperia's automotive-qualified logic portfolio, designed specifically for robust serial-to-parallel data conversion in harsh-temperature vehicle subsystems.

FAQ

What is the difference between QS1 and QS2 outputs?

QS1 outputs the data from shift register stage 6 on the same CP rising edge that shifts data into stage 7, enabling fast-edge cascading. QS2 outputs the data from stage 7 on the subsequent CP falling edge, providing phase-aligned data for slower clock domains. This dual-output architecture eliminates setup/hold violations in multi-device chains.

Can OE be toggled while STR is active?

Yes - OE controls only the 3-state output drivers and has no effect on the internal shift or storage registers. Outputs enter high-impedance state immediately upon OE going LOW, regardless of STR or CP activity, preserving register contents for later re-enablement without data loss.

Is the 74HC4094DB-Q100 pin-compatible with standard 74HC4094 packages?

No - the 'DB' suffix denotes SOT338-1 (SSOP16), which has 0.65 mm lead pitch and 4.4 mm body width, differing from SO16 (SOT109-1, 1.27 mm pitch) and TSSOP16 (SOT403-1, 0.65 mm pitch but 4.4 mm width with different lead form). Layout and footprint must match SOT338-1 mechanical dimensions.

How does the input clamp diode affect interfacing with 12 V signals?

The integrated clamp diodes allow safe connection of inputs to voltages above VCC when paired with a series current-limiting resistor. For 12 V signals at VCC = 5 V, a 1 kΩ resistor limits IIK to ~7 mA - within the ±20 mA absolute maximum rating - enabling direct wake-up line or sensor interface without external protection.