Nexperia USA Inc. 74HC164PW-Q100J

Overview

74HC164PW-Q100 from Nexperia is an AEC-Q100 Grade 1 qualified 8-bit serial-in/parallel-out shift register with gated dual data inputs (DSA, DSB), asynchronous master reset (MR), and edge-triggered clock (CP). It operates from 2.0 V to 6.0 V across –40 °C to +125 °C and delivers 8 parallel outputs (Q0–Q7) for automotive lighting control and dashboard display multiplexing.

For engineers reviewing the 74HC164PW-Q100 datasheet, 74HC164PW-Q100 pinout, 74HC164PW-Q100 application, or 74HC164PW-Q100 equivalent, this device supports high-noise-immunity serial-to-parallel expansion in space-constrained automotive ECUs where CMOS-level input compatibility, low static current (<160 µA at 125 °C), and TSSOP14 package AOI capability are critical.

Technical Context

The 74HC164PW-Q100 implements a synchronous 8-stage D-type flip-flop chain with dual-input AND-gated serial data entry: either DSA or DSB can serve as an active-HIGH enable for the other. Data shifts on LOW-to-HIGH CP transitions, and MR forces all Q outputs LOW asynchronously-bypassing clock dependency.

Its CMOS input structure provides TTL-compatible thresholds only in the 74HCT variant; this HC version requires CMOS-level inputs (VIH ≥ 3.15 V at VCC = 4.5 V). Input clamp diodes allow safe interfacing to voltages exceeding VCC when used with current-limiting resistors.

Key Specifications

Pinout & Package

TSSOP14 plastic thin shrink small outline package (SOT402-1), 14-lead, body width 4.4 mm, with 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 74HCT164PW-Q100, the HC variant offers higher noise margin in modern 3.3 V domains but requires stronger drive strength; versus SN74HC164PWR, the Q100 version guarantees extended temperature operation and automotive reliability testing-critical for functional safety compliance.

Availability

74HC164PW-Q100 is available at Aetrix Electronics and suitable for automotive instrument clusters, LED matrix displays, body control modules, and lighting sequencers requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74HC164PW-Q100 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 leading semiconductor manufacturer specializing in high-performance, high-reliability logic, analog, and discrete components for automotive, industrial, and consumer markets.

The 74HC164PW-Q100 belongs to Nexperia's automotive-qualified logic portfolio, designed specifically to meet stringent AEC-Q100 requirements for under-hood and safety-critical electronic control units.

FAQ

What is the maximum clock frequency supported by the 74HC164PW-Q100 at 125 °C?

At VCC = 6.0 V and Tamb = +125 °C, the maximum guaranteed clock frequency is 24 MHz, derived from the 43 ns maximum propagation delay (tpd) and setup/hold timing margins specified in Table 7. This enables reliable operation in high-temperature engine bay environments without derating.

Can DSA and DSB be tied together for single-input operation?

Yes - connecting DSA and DSB together creates a standard single-data-input shift register. The internal AND gate ensures both inputs must be HIGH to enable data entry, so tying them simplifies control logic while preserving full functionality and timing behavior.

Is the exposed pad on the TSSOP14 package electrically connected?

No - the exposed pad in SOT402-1 (TSSOP14) is not electrically connected to any internal node. Per datasheet Section 5.1, it may remain floating or be connected to GND for thermal enhancement, but no electrical requirement exists for soldering it.

How does the master reset (MR) interact with the clock (CP) during power-up sequencing?

MR is asynchronous and dominant: asserting MR LOW at any time - including during power ramp-up before VCC stabilizes - forces Q0–Q7 LOW immediately. This ensures known initial state even if CP is active or undefined during startup, meeting ISO 26262 initialization requirements for automotive systems.