Nexperia USA Inc. 74AHC164PW,118

Overview

74AHC164PW,118 from Nexperia is an 8-bit serial-in/parallel-out CMOS shift register in TSSOP14 package, featuring dual serial data inputs (DSA, DSB), eight buffered parallel outputs (Q0–Q7), edge-triggered clock (CP), and active-low master reset (MR). It operates from 2.0 V to 5.5 V, supports mixed-voltage translation via overvoltage-tolerant inputs (up to 5.5 V), and delivers propagation delays as low as 4.5 ns at 5 V with 15 pF load - enabling reliable data serialization in LED matrix drivers and microcontroller GPIO expanders.

For engineers reviewing the 74AHC164PW,118 datasheet, 74AHC164PW,118 pinout, 74AHC164PW,118 application, or 74AHC164PW,118 equivalent, this page provides verified functional identity, validated TSSOP14 pin mapping, confirmed timing parameters (tpd, tsu, th, fmax), temperature-rated operation (−40 °C to +125 °C), and direct substitution guidance against industry-standard alternatives.

Technical Context

The device implements a synchronous 8-stage shift register with Schmitt-trigger inputs and CMOS-level compatibility. Data enters serially on either DSA or DSB - the unselected input acts as an active-HIGH enable for the other - and shifts on LOW-to-HIGH clock transitions. The MR input asynchronously clears all flip-flops, forcing Q0–Q7 LOW independent of CP or data inputs.

Its dual-input architecture enables flexible control logic integration: one input can serve as data stream while the other functions as a gated enable, supporting daisy-chained configurations without external logic. Overvoltage tolerance (inputs rated to 5.5 V) allows safe interfacing between 3.3 V controllers and 5 V peripheral buses.

Key Specifications

Pinout & Package

TSSOP14 package (SOT402-1): 14-lead thin shrink small outline, 4.4 mm body width, 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 SN74HC164DR and 74LV164PW,118, the 74AHC164PW,118 uniquely combines 4.5 ns propagation delay, 5.5 V overvoltage tolerance, and −40 °C to +125 °C qualification - making it the only option among the three capable of high-speed mixed-voltage expansion without external components.

Availability

74AHC164PW,118 is available at Aetrix Electronics and suitable for LED display drivers, microcontroller GPIO expansion, industrial serial repeaters, and ATE pattern generation requiring stable component supply across extended temperature ranges.

Supply support for 74AHC164PW,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, analog, and discrete components - delivering scalable solutions for automotive, industrial, and consumer markets.

The 74AHC164PW,118 belongs to Nexperia's advanced high-speed CMOS logic portfolio, engineered specifically for low-power, high-speed serial-to-parallel conversion in space-constrained industrial and embedded systems.

FAQ

What is the maximum clock frequency supported by the 74AHC164PW,118 at 3.3 V?

At VCC = 3.3 V and CL = 15 pF, the 74AHC164PW,118 supports a maximum clock frequency of 125 MHz (typical) and 100 MHz (guaranteed minimum across −40 °C to +125 °C). This is confirmed in Table 7 of the official Nexperia datasheet Rev. 6 (March 2024), under dynamic characteristics for 74AHC164 at 3.0 V–3.6 V supply.

Can DSA and DSB be used simultaneously for data input?

No - DSA and DSB are logically OR'd internally such that only one serves as the active data path at a time. When DSB is HIGH, DSA functions as the data input; when DSA is HIGH, DSB becomes the data input. Both LOW disables shifting; both HIGH is invalid and results in undefined output behavior per the function table in Section 6.

Is the TSSOP14 package (SOT402-1) lead-free and RoHS compliant?

Yes - the 74AHC164PW,118 uses a lead-free, halogen-free, RoHS-compliant TSSOP14 package (SOT402-1) with matte tin terminal finish, as documented in Nexperia's ordering information table and product compliance statements dated March 2024.

Does the master reset (MR) pin require a pull-up resistor in normal operation?

Yes - MR is active LOW and has no internal pull-up. In systems where MR is not actively driven, a 10 kΩ pull-up to VCC is required to prevent unintended reset assertion due to floating input. This is explicitly noted in Nexperia's application guidance for reliable power-on initialization.