Nexperia USA Inc. 74AHC164D,118

Overview

74AHC164D,118 from Nexperia is an 8-bit serial-in/parallel-out CMOS shift register with dual serial inputs (DSA and DSB), eight buffered parallel outputs (Q0–Q7), master reset (MR) active LOW, and edge-triggered clock (CP) on LOW-to-HIGH transitions. It operates from 2.0 V to 5.5 V, supports mixed-voltage translation via overvoltage-tolerant inputs up to 5.5 V, and is rated for -40 °C to +125 °C. Used in LED matrix drivers, I/O expansion for microcontrollers, and serial-to-parallel data conversion in industrial control panels.

For engineers reviewing the 74AHC164D,118 datasheet, 74AHC164D,118 pinout, 74AHC164D,118 application, or 74AHC164D,118 equivalent, this page delivers verified functional identity, SO14 package mapping, timing parameters (tpd ≤ 11.5 ns at 5 V), input voltage thresholds (VIH = 3.85 V min), and real-world substitution guidance - all grounded in Nexperia's Rev. 6 (2024) product data sheet.

Technical Context

This device implements a synchronous 8-stage shift register using positive-edge-triggered D-type flip-flops with asynchronous active-LOW master reset. Data enters serially through either DSA or DSB, with one input acting as an enable for the other - enabling flexible serial data routing without external logic. The register features Schmitt-trigger inputs for noise immunity and CMOS-level compatibility (74AHC variant), distinguishing it from TTL-compatible 74AHCT164.

All outputs are buffered and capable of driving ±8 mA at VCC = 4.5 V. Propagation delay (CP to Qn) is 4.5 ns (typ) / 11.5 ns (max) at 5 V and 15 pF load, supporting clock frequencies up to 125 MHz (typ) under light capacitive loading. Input clamping and ESD protection (HBM >2000 V, CDM >1000 V) ensure robustness in noisy industrial environments.

Key Specifications

Pinout & Package

74AHC164D,118 is supplied in a 14-lead plastic small outline package (SO14, SOT108-1), 3.9 mm body width, with standard JEDEC MS-012 footprint and gull-wing leads.

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 74AHCT164D,118, the 74AHC164D,118 provides broader voltage translation capability and lower static current; versus SN74LV164APWR, it delivers stronger input ruggedness and tighter propagation delay consistency across voltage rails.

Availability

74AHC164D,118 is available at Aetrix Electronics and suitable for LED display drivers, microcontroller I/O expansion, industrial PLC output modules, and legacy bus interface adapters requiring stable component supply across extended temperature ranges.

Supply support for 74AHC164D,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 essential efficiency technologies, delivering high-performance logic, discrete, and MOSFET solutions for automotive, industrial, and consumer markets.

The 74AHC164D,118 belongs to Nexperia's AHC logic family - engineered for low-power, high-noise-immunity serial interface bridging in space-constrained, thermally demanding applications.

FAQ

Can 74AHC164D,118 operate reliably at 2.0 V supply?

Yes. The device is fully specified from 2.0 V to 5.5 V, with VIH = 1.5 V (min) and VOL ≤ 0.55 V (max) at 2.0 V and IO = 4 mA. Propagation delay increases to 16.0 ns (max) at 2.0 V/15 pF, but functionality remains guaranteed across the full -40 °C to +125 °C range.

What is the purpose of the dual serial inputs DSA and DSB?

DSA and DSB provide hardware-selectable serial data paths: when DSB is HIGH, data on DSA is shifted in; when DSA is HIGH, data on DSB is shifted in. This enables single-wire multiplexing without external logic - for example, selecting between two sensor streams or command channels using one control line.

Is the SO14 package (SOT108-1) lead-free and RoHS compliant?

Yes. Nexperia confirms the 74AHC164D,118 in SO14 packaging meets RoHS Directive 2011/65/EU and is lead-free, with homogeneous material compliance verified per IEC 62321. The package uses matte tin (Sn) termination and complies with JEDEC J-STD-020 moisture sensitivity level 1.

How does the master reset (MR) interact with the clock (CP)?

MR is asynchronous and dominant: a LOW on MR forces all Q0–Q7 outputs LOW immediately, overriding any ongoing clock activity or data shifting. The register remains cleared until MR returns HIGH, after which the next CP rising edge loads the first bit from the enabled serial input - no race condition or metastability risk exists.