Nexperia USA Inc. 74HC4094DB,112

Overview

74HC4094DB,112 from Nexperia is an 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 2.0 V to 6.0 V, supports -40 °C to +125 °C ambient range, and delivers 39 ns typical propagation delay (CP to QPn at VCC = 4.5 V). It is used in LED matrix drivers requiring cascaded output expansion.

For engineers reviewing the 74HC4094DB,112 datasheet, 74HC4094DB,112 pinout, 74HC4094DB,112 application, or 74HC4094DB,112 equivalent, this device serves as a low-power, temperature-robust shift-register solution for serial-to-parallel conversion in space-constrained industrial control panels and remote I/O modules where precise timing control and output isolation are required.

Technical Context

The device implements two independent synchronous registers: an 8-stage shift register clocked on CP's rising edge and an 8-bit storage latch triggered by STR high. Data propagates through QS1 on the same CP rising edge and appears at QS2 on the subsequent CP falling edge-enabling flexible cascade timing across fast or slow clock edges.

Its 3-state parallel outputs (QP0–QP7) are enabled only when OE is HIGH; OE LOW forces high-impedance states without affecting internal register contents. Input clamp diodes allow safe interfacing to voltages exceeding VCC when used with current-limiting resistors.

Key Specifications

Pinout & Package

74HC4094DB,112 uses the SOT338-1 (SSOP16) package: plastic shrink small outline, 16 leads, 5.3 mm body width, 0.65 mm pitch. Pin 1 is marked with a dot or bevelled corner; pin numbering follows standard counter-clockwise convention.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74HCT4094DB,112, the HC variant offers lower static current but requires CMOS-level inputs; compared with SN74HC595PWR, the 74HC4094DB provides deterministic dual-edge output staging essential for jitter-sensitive LED multiplexing.

Availability

74HC4094DB,112 is available at Aetrix Electronics and suitable for LED matrix drivers, industrial I/O expanders, and automotive body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74HC4094DB,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 high-volume applications.

The 74HC4094 belongs to Nexperia's industry-standard 74HC logic family, designed specifically for low-power, wide-supply serial-to-parallel conversion in space- and thermal-constrained embedded systems.

FAQ

What is the minimum pulse width required on the CP input?

The minimum HIGH and LOW pulse width for CP is 16 ns at VCC = 4.5 V, per Table 7. This ensures reliable register stage advancement and avoids metastability. At VCC = 2.0 V, the minimum widens to 80 ns. Designers must verify clock source rise/fall times meet the 1.67 ns/V input transition rate limit to prevent setup/hold violations.

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

Yes - QS1 and QS2 provide identical data (QP7) with intentional timing offset: QS1 updates on the CP rising edge, QS2 updates on the subsequent CP falling edge. This allows one device to feed the D input of the next stage while the second feeds a timing-critical latch or synchronizer, eliminating race conditions in multi-stage pipelines.

How does the STR input interact with ongoing shift operations?

STR is asynchronous to CP and operates independently: asserting STR HIGH copies the current contents of the shift register into the storage register without halting shifting. Subsequent CP edges continue advancing new data into the shift register, enabling continuous data streaming while maintaining stable parallel outputs.

Is the 74HC4094DB,112 pin-compatible with the SO16 (SOT109-1) version?

Yes - both 74HC4094DB (SSOP16/SOT338-1) and 74HC4094D (SO16/SOT109-1) share identical pin functions and ordering. However, SSOP16 has narrower body width (5.3 mm vs. 3.9 mm) and tighter 0.65 mm pitch, requiring adjusted PCB land patterns and reflow profiles to ensure solder joint integrity.