Nexperia USA Inc. 74HCT4094DB,112

Overview

74HCT4094DB,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 at 4.5 V to 5.5 V, supports -40 °C to +125 °C ambient, and delivers 25 ns typical propagation delay (CP to QPn @ VCC = 4.5 V). It is used in LED matrix drivers and remote control holding registers where cascaded data distribution and output latching are required.

For engineers reviewing the 74HCT4094DB,112 datasheet, 74HCT4094DB,112 pinout, 74HCT4094DB,112 application, or 74HCT4094DB,112 equivalent, key selection criteria include TTL-compatible input thresholds (VIH = 2.0 V min), 3-state output enable timing (ten = 35 ns max), QS1/QS2 phase relationship for clock-edge-agnostic cascading, and SSOP16 thermal derating (8.5 mW/K above 91 °C).

Technical Context

The device implements two synchronous registers: an 8-stage shift register clocked on CP rising edges, and an independent 8-bit storage latch triggered by STR high. Data advances through the shift register on each CP↑, while QS1 reflects stage 6 output on CP↑ and QS2 reflects stage 7 output on CP↓-enabling robust inter-device synchronization across varying clock edge rates.

Outputs are buffered 3-state CMOS drivers controlled solely by OE (active-high); OE state has no effect on internal register contents. 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

74HCT4094DB,112 is housed in a plastic shrink small outline package (SSOP16, SOT338-1) with 16 leads, 5.3 mm body width, and 0.65 mm lead pitch. The package features gull-wing leads optimized for surface-mount reflow and offers improved thermal resistance over SO16 (derates 8.5 mW/K above 91 °C).

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,112 and SN74LV4094APWR, the 74HCT4094DB,112 uniquely bridges legacy TTL systems and modern 5 V CMOS infrastructure via guaranteed 2.0 V VIH, while maintaining identical pinout, timing behavior, and cascading capability - making it the optimal drop-in replacement for existing 74HCT4094 designs.

Availability

74HCT4094DB,112 is available at Aetrix Electronics and suitable for LED display drivers, industrial I/O expanders, and remote control decoder buffers requiring stable component supply across automotive, factory automation, and test equipment lifecycles.

Supply support for 74HCT4094DB,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, reliable logic, analog, and MOSFET solutions with focus on efficiency, miniaturization, and automotive-grade reliability.

The 74HCT4094 belongs to Nexperia's industry-standard 74-series logic portfolio, engineered for robust serial-to-parallel conversion in space-constrained, thermally demanding applications such as automotive body control and industrial HMI subsystems.

FAQ

What is the minimum setup time for the D input relative to CP?

The D input must be stable for at least 10 ns before the CP rising edge at VCC = 4.5 V (tsu = 10 ns min). This ensures reliable capture into the first shift register stage. Violating this timing risks metastability or bit corruption, especially in high-speed cascaded configurations where accumulated skew may reduce margin.

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

Yes - QS1 and QS2 provide complementary phase-aligned data: QS1 outputs stage 6 on CP↑, QS2 outputs stage 7 on CP↓. This allows one device to feed the D input of the next while the current device updates its own storage register, enabling glitch-free, continuous data flow across arbitrary-length chains without external synchronization logic.

How does OE affect power consumption during active operation?

When OE = LOW, outputs enter high-impedance state but internal registers remain fully powered and functional - ICC remains at 160 μA max. No reduction in supply current occurs because the output buffer circuitry is disabled, not powered down. Power savings require halting CP/STR activity or reducing VCC.

Is the SSOP16 package (SOT338-1) RoHS-compliant and lead-free?

Yes - the 74HCT4094DB,112 SSOP16 package is fully RoHS-compliant and lead-free per Nexperia's product compliance documentation (reference: Nexperia Declaration of Conformity DOC-2023-001). It meets JEDEC J-STD-020D moisture sensitivity level 1 and supports standard Pb-free reflow profiles (peak 260 °C).