NXP Semiconductors 74LV4094PW,112

Overview

74LV4094PW,112 from Nexperia is an 8-bit serial-in/parallel-out shift-and-store bus register with independent shift and storage clocks, 3-state outputs, dual serial outputs (QS1/QS2) for daisy-chaining, and operation across 1.0 V to 3.6 V supply. It performs serial-to-parallel data conversion in LED matrix drivers, remote I/O expanders, and industrial control interfaces where low-voltage logic and cascaded register staging are required.

For engineers reviewing the 74LV4094PW,112 datasheet, 74LV4094PW,112 pinout, 74LV4094PW,112 application, or 74LV4094PW,112 equivalent, this device supports precise timing-critical cascading via edge-aligned QS1 (on CP ↑) and delayed QS2 (on CP ↓), enables high-impedance output control via OE, and delivers guaranteed functionality from –40 °C to +125 °C in TSSOP16 packaging.

Technical Context

The 74LV4094PW implements a two-stage pipeline: an 8-bit shift register clocked on CP rising edges, and a parallel-access storage register loaded synchronously on STR HIGH. Data propagates through the shift register at up to 95 MHz (VCC = 3.3 V, CL = 15 pF), then transfers atomically to the storage register without affecting ongoing serial shifting.

Its dual serial outputs provide deterministic cascade timing: QS1 mirrors QP6 on each CP ↑ for fast-edge systems, while QS2 outputs the same data on the subsequent CP ↓ for slow-edge or noise-sensitive interconnects. OE operates independently of register state, enabling dynamic bus sharing without disrupting internal data flow.

Key Specifications

Pinout & Package

TSSOP16 package (SOT403-1): 4.4 mm body width, 0.65 mm lead pitch, surface-mount, RoHS-compliant, thermal pad optional.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LV595AQPWRQ1 and 74HC595PW,118, the 74LV4094PW,112 uniquely provides dual-edge-cascadable serial outputs and guaranteed 1.0 V operation - making it optimal for modern low-voltage, high-density, and timing-critical register chaining.

Availability

74LV4094PW,112 is available at Aetrix Electronics and suitable for LED display drivers, industrial I/O expansion, remote sensor aggregation, and automotive body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74LV4094PW,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 focused on high-volume, high-reliability logic, analog, and discrete components, serving automotive, industrial, and consumer markets with scalable manufacturing and rigorous quality systems.

The 74LV4094 belongs to Nexperia's Low-Voltage Logic (LV) family, engineered specifically for energy-efficient, mixed-supply digital systems operating below 3.6 V - emphasizing robustness, timing precision, and seamless integration with modern microcontrollers and FPGAs.

FAQ

What is the minimum supply voltage at which 74LV4094PW,112 guarantees full functionality?

The 74LV4094PW,112 is fully specified and functional down to 1.0 V supply voltage, with input thresholds scaling proportionally (VIH = 0.6 × VCC, VIL = 0.4 × VCC). Static characteristics are guaranteed from 1.2 V, but operational behavior-including correct shifting, strobing, and 3-state control-is validated at 1.0 V per JEDEC JESD8-7, JESD8-5, and JESD8C standards.

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

Yes - QS1 and QS2 are electrically independent outputs carrying identical data (QP6) with precisely timed offsets: QS1 asserts on the same CP rising edge, QS2 asserts on the following CP falling edge. This allows one to feed a fast-responding device (e.g., FPGA input) and another to feed a slower microcontroller input, eliminating inter-stage setup/hold violations in heterogeneous systems.

Does OE affect the internal shift or storage registers during operation?

No - the OE input controls only the output buffer enable state and has zero effect on the shift register, storage register, or any internal latching behavior. Registers continue shifting and storing normally regardless of OE state; outputs simply enter high-impedance (Z) when OE is LOW, preserving bus integrity without disrupting data flow.

How does the 74LV4094PW,112 handle input signals exceeding VCC?

Inputs include integrated clamp diodes to VCC and GND. When interfacing to voltages above VCC (e.g., 5 V logic), a series current-limiting resistor must be used to restrict IIK to ≤ ±20 mA (per Absolute Maximum Ratings). This allows safe level translation without external diodes or dedicated translators in mixed-voltage systems.