Nexperia USA Inc. 74HC164BQ-Q100X

Overview

74HC164BQ-Q100 from Nexperia is an AEC-Q100 Grade 1 qualified 8-bit serial-in/parallel-out shift register with dual gated serial 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 buffered CMOS-level outputs (Q0–Q7) for automotive lighting control, display drivers, and I/O expansion.

For engineers reviewing the 74HC164BQ-Q100 datasheet, 74HC164BQ-Q100 pinout, 74HC164BQ-Q100 application, or 74HC164BQ-Q100 equivalent, this device supports high-noise-immunity serial-to-parallel conversion in space-constrained automotive modules where DHVQFN14 packaging, side-wettable flanks for AOI, and guaranteed timing at 125 °C are critical selection criteria.

Technical Context

The 74HC164BQ-Q100 implements a synchronous 8-stage D-type flip-flop chain with gated serial data selection: either DSA or DSB may serve as active-HIGH enable for the other input, enabling flexible daisy-chaining or data multiplexing. Its asynchronous MR clears all outputs LOW independently of CP state.

It uses standard CMOS logic levels (VIH = 3.15 V min at VCC = 4.5 V; VIL = 1.35 V max), achieves tpd = 15 ns typical (VCC = 4.5 V, CL = 50 pF), and supports fmax = 71 MHz (VCC = 4.5 V, CL = 15 pF), with propagation delays fully characterized from –40 °C to +125 °C.

Key Specifications

Pinout & Package

DHVQFN14 package (SOT762-1), 2.5 × 3.0 × 0.85 mm body, side-wettable flanks for automated optical inspection (AOI), no leads, 14 terminals, exposed thermal pad (non-electrical, optional GND connection).

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 74HCT164BQ-Q100, the subject part offers higher noise immunity for modern 3.3 V MCU interfaces; compared with SN74LV164AQPWRQ1, it provides stronger drive (±4 mA vs. ±6 mA) and faster max frequency (71 MHz vs. 45 MHz) at 4.5 V, but consumes more quiescent current.

Availability

74HC164BQ-Q100 is available at Aetrix Electronics and suitable for automotive lighting control, instrument cluster display drivers, and body control module I/O expansion requiring stable component supply across extended temperature ranges and AEC-Q100 compliance.

Supply support for 74HC164BQ-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 global semiconductor expert delivering high-performance, reliable, and efficient logic, analog, and MOSFET solutions with deep automotive qualification expertise.

The 74HC164BQ-Q100 belongs to Nexperia's automotive-qualified HC logic family, designed specifically for robust serial-to-parallel data conversion in harsh-temperature automotive subsystems where reliability, AOI-ready packaging, and AEC-Q100 Grade 1 certification are mandatory.

FAQ

What is the maximum clock frequency supported by the 74HC164BQ-Q100 at 125 °C?

At VCC = 4.5 V, CL = 50 pF, and Tamb = +125 °C, the maximum guaranteed clock frequency is 20 MHz (tpd ≤ 43 ns, tW ≥ 15 ns). At reduced load (CL = 15 pF), fmax reaches 24 MHz under the same conditions, as specified in Table 7 of the Rev. 3 datasheet.

Can DSA and DSB be used simultaneously for data input?

No - DSA and DSB are mutually gated: only one serves as the active data path while the other acts as its enable. When DSA is HIGH, data on DSB is loaded on the next CP rising edge; when DSB is HIGH, data on DSA is loaded. Simultaneous HIGH on both inputs results in undefined behavior per the function table.

Is the exposed thermal pad on the DHVQFN14 package electrically connected?

No - the exposed pad (terminal 1 index area) has no electrical function. Per datasheet Section 5.1, it may remain floating or be connected to GND if soldered, but it is not required and carries no internal connection to VCC or GND.

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

MR is fully asynchronous and dominant: a LOW on MR forces Q0–Q7 LOW immediately, overriding any ongoing clock activity or data shifting. The register remains cleared until MR returns HIGH, after which normal CP-triggered shifting resumes on the next rising edge.