Nexperia USA Inc. 74LVC594APW,118

Overview

74LVC594APW,118 from Nexperia is an 8-bit serial-in/parallel-out shift register with separate shift and storage registers, Schmitt-trigger inputs, IOFF partial power-down support, and dual active-low reset (SHR/STR). It operates from 1.2 V to 3.6 V, tolerates 5.5 V inputs, and delivers ≤7.7 ns propagation delay at 3.3 V for LED matrix control and remote I/O expansion.

For engineers reviewing the 74LVC594APW,118 datasheet, 74LVC594APW,118 pinout, 74LVC594APW,118 application, or 74LVC594APW,118 equivalent, this device serves as a cascaded serial-to-parallel translator in mixed-voltage industrial control panels, where precise timing alignment between SHCP and STCP clocks, low-power operation across -40 °C to +125 °C, and robust ESD immunity (HBM >2000 V) are critical selection criteria.

Technical Context

The 74LVC594APW implements two independent synchronous registers: an 8-stage shift register clocked by SHCP (LOW-to-HIGH edge) and an 8-bit storage register clocked by STCP (LOW-to-HIGH edge), enabling pipelined data latching. Cascading is supported via DS input and Q7S serial output, with guaranteed timing under identical VCC and temperature conditions.

Its IOFF circuit disables outputs during power-down to prevent backflow current, while Schmitt-trigger inputs tolerate slow-rising signals and support direct interfacing with both 3.3 V and 5 V logic families. The device complies with JEDEC standards JESD8-7A, JESD8-5A, and JESD8-C/JESD36 across its full supply range.

Key Specifications

Pinout & Package

TSSOP16 package (SOT403-1): plastic thin shrink small outline, 16 leads, 4.4 mm body width, 0.65 mm pitch, lead-free and RoHS compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LV8154N and 74HC595PW,118, the 74LVC594APW,118 uniquely delivers dual-clock domain control, 1.2 V operation, and IOFF protection - making it the sole option for energy-constrained, mixed-voltage, or fault-tolerant serial-to-parallel translation.

Availability

74LVC594APW,118 is available at Aetrix Electronics and suitable for LED matrix driver modules, industrial I/O expanders, remote control decoder interfaces, and automotive body controller subsystems requiring stable component supply across extended temperature and mixed-voltage environments.

Supply support for 74LVC594APW,118 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, discrete, and MOSFET solutions for automotive, industrial, and consumer markets.

The 74LVC594A belongs to Nexperia's LVC logic family - engineered for low-voltage operation (1.2–3.6 V), mixed-signal interoperability, and robust performance in harsh thermal and electrical environments.

FAQ

Can 74LVC594APW,118 drive LEDs directly?

No - its outputs are CMOS buffer stages rated for ±24 mA sink/source at 3.0 V, insufficient for typical 20 mA LED forward current. It must interface with external drivers (e.g., ULN2003 or discrete MOSFETs) to provide adequate current and voltage headroom for LED anodes/cathodes.

What happens if SHCP and STCP are tied together?

When SHCP and STCP are shorted, the shift register advances one bit per clock edge, and the storage register captures the previous state - resulting in a fixed one-clock-cycle pipeline delay. This configuration is valid but eliminates independent control of shift vs. latch timing.

Is the TSSOP16 package (SOT403-1) compatible with reflow soldering?

Yes - the SOT403-1 package is qualified for standard lead-free reflow profiles (J-STD-020), with peak temperature up to 260 °C. Its 0.65 mm pitch requires controlled stencil design and placement accuracy ≤0.05 mm to ensure reliable solder joint formation.

Does Q7S output reflect the most recent shift or the prior stage?

Q7S outputs the value shifted out of stage Q6 (internal Q6S), not the current Q7 value. As defined in Table 3 and Fig. 2, Q7S = Q6S on each SHCP rising edge - enabling correct daisy-chaining where the next device's DS receives the prior stage's overflow bit.