Nexperia USA Inc. 74AHCT595PW,118

Overview

74AHCT595PW,118 from Nexperia is an 8-bit serial-in/parallel-out shift register with storage latch and 3-state outputs, operating at 4.5 V–5.5 V supply. It features separate shift (SHCP) and storage (STCP) clocks, asynchronous master reset (MR), TTL-compatible inputs, and overvoltage-tolerant I/O up to 5.5 V. Used in LED matrix drivers and microcontroller GPIO expansion where serial-to-parallel conversion and output latching are required.

For engineers reviewing the 74AHCT595PW,118 datasheet, 74AHCT595PW,118 pinout, 74AHCT595PW,118 application, or 74AHCT595PW,118 equivalent, this page delivers verified functional architecture, TSSOP16 package details, propagation delays (e.g., STCP→Qn = 4.0 ns typ @ 5 V), output enable timing (ten = 6.2 ns typ), and real-world substitution guidance - all grounded in Nexperia's Rev. 9 (May 2025) product data sheet.

Technical Context

This device implements a dual-register architecture: an 8-stage shift register accepting serial data on DS with rising-edge-triggered SHCP, and an independent 8-bit storage register loaded on rising-edge STCP. Outputs Q0–Q7 reflect storage register contents only when OE is LOW; OE HIGH forces high-impedance states without affecting internal registers.

Its TTL-compatible input thresholds (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 4.5–5.5 V) ensure interoperability with legacy 5 V logic families, while overvoltage tolerance enables safe interfacing across mixed-voltage domains. The MR input asynchronously clears the shift register but leaves the storage register unaffected until next STCP edge.

Key Specifications

Pinout & Package

TSSOP16 plastic thin shrink small outline package (SOT403-1); 16 leads; body width 4.4 mm; 0.65 mm pitch; exposed pad not electrically connected.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 8-bit serial-in/parallel-out shift register applications.

Compared with 74AHCT595PW,118, the 74HC595PW,118 demands higher input voltage compliance and lacks TTL interoperability, while the SN74LV595APWR trades off some speed and noise immunity for broader supply flexibility - making the AHCT variant optimal for robust 5 V industrial control where legacy compatibility is essential.

Availability

74AHCT595PW,118 is available at Aetrix Electronics and suitable for LED matrix drivers, microcontroller GPIO expanders, industrial relay controllers, and automotive interior lighting systems requiring stable component supply across extended temperature ranges.

Supply support for 74AHCT595PW,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 delivering high-performance logic, discrete, and MOSFET solutions optimized for efficiency, reliability, and miniaturization in power and signal applications.

The 74AHCT595 belongs to Nexperia's advanced logic portfolio designed specifically for industrial automation, automotive electronics, and embedded systems demanding TTL compatibility, wide temperature operation, and robust ESD performance.

FAQ

What is the maximum clock frequency supported by the 74AHCT595PW,118?

The 74AHCT595PW,118 supports a minimum maximum clock frequency of 130 MHz for both SHCP and STCP inputs at VCC = 4.5–5.5 V, as specified in Table 7 of the Rev. 9 datasheet. This value is guaranteed across the full −40 °C to +125 °C operating range and applies to CL = 15 pF load conditions.

Can the 74AHCT595PW,118 be used with a 3.3 V microcontroller?

Yes - its inputs are overvoltage tolerant up to 5.5 V, so 3.3 V logic-high signals (≥2.0 V) meet the VIH specification. However, outputs swing rail-to-rail (0 V to VCC), so if VCC = 5 V, external level-shifting is required before connecting to 3.3 V inputs to avoid damage or overstress.

How does the master reset (MR) affect the storage register?

MR only resets the 8-stage shift register; it has no effect on the storage register or parallel outputs Q0–Q7. The storage register retains its last loaded value until updated by a rising edge on STCP - enabling safe reset of serial data path without disrupting active outputs.

Is the TSSOP16 package (SOT403-1) lead-free and RoHS compliant?

Yes - the 74AHCT595PW,118 in TSSOP16 (SOT403-1) packaging is fully RoHS compliant and lead-free, as confirmed in Nexperia's official product documentation and material declarations dated May 2025. It meets JEDEC J-STD-020 moisture sensitivity level 1 (MSL1) requirements.