Nexperia USA Inc. 74AHCT164PW-Q100J

Overview

74AHCT164PW-Q100 from Nexperia is an automotive-grade 8-bit serial-in/parallel-out shift register with dual active-HIGH data inputs (DSA, DSB), eight buffered CMOS outputs (Q0–Q7), edge-triggered clock (CP), and asynchronous master reset (MR). It operates from 4.5 V to 5.5 V, supports -40 °C to +125 °C ambient, and features TTL-level input compatibility, overvoltage-tolerant inputs up to 5.5 V, and Schmitt-trigger inputs for noise immunity. It is used in automotive body control modules for LED matrix expansion and multiplexed sensor interface.

For engineers reviewing the 74AHCT164PW-Q100 datasheet, 74AHCT164PW-Q100 pinout, 74AHCT164PW-Q100 application, or 74AHCT164PW-Q100 equivalent, this page delivers verified functional identity, AEC-Q100 Grade 1 qualification status, TSSOP14 package mapping, timing parameters at 5 V/125 °C, and validated alternatives for automotive signal chain design.

Technical Context

This device implements a synchronous 8-stage shift register using positive-edge-triggered D-type flip-flops, where data propagates from DSA or DSB on each LOW-to-HIGH CP transition. The dual-input architecture allows one input to act as an enable for the other, enabling flexible serial data gating without external logic.

Master reset (MR) is asynchronous and active LOW, forcing all Q outputs to logic LOW independent of clock or data state. Input overvoltage tolerance (up to 5.5 V) and Schmitt-trigger action support robust operation in noisy automotive environments with mixed-voltage signaling.

Key Specifications

Pinout & Package

TSSOP14 package (SOT402-1): plastic thin shrink small outline, 14 leads, 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 74AHCT164PW-Q100, the 74AHC164PW-Q100 offers tighter input threshold control for 3.3 V logic domains, while the SN74LV164APWRE4 trades automotive qualification for broader supply flexibility and TI's long-term availability assurance-critical for multi-year production programs.

Availability

74AHCT164PW-Q100 is available at Aetrix Electronics and suitable for automotive lighting control, body electronics I/O expansion, instrument cluster display driving, and power distribution monitoring requiring stable component supply across extended temperature ranges and AEC-Q100 compliance.

Supply support for 74AHCT164PW-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 focused on essential efficiency technologies, delivering high-performance logic, analog, and MOSFET solutions optimized for automotive, industrial, and mobile markets.

This device belongs to Nexperia's automotive-qualified logic portfolio, engineered specifically for robust serial data expansion in harsh-temperature vehicle subsystems where reliability, low power, and signal integrity are critical.

FAQ

What is the maximum clock frequency supported by the 74AHCT164PW-Q100 at 5 V and 125 °C?

At V_CC = 5 V and T_amb = +125 °C with C_L = 50 pF, the maximum guaranteed clock frequency is 65 MHz. This is derived from the maximum propagation delay (t_pd = 14.0 ns) and minimum pulse width (t_W = 5.0 ns), ensuring setup/hold timing margins are maintained across the full automotive temperature range.

Can DSA and DSB be used simultaneously to input two independent data streams?

No. DSA and DSB are logically OR'd internally; asserting both HIGH simultaneously results in undefined behavior per the function table. Their intended use is selective gating: one input serves as data, the other as enable-e.g., DSB = HIGH enables DSA data flow, DSB = LOW blocks it regardless of DSA state.

Is the exposed thermal pad on the TSSOP14 package electrically connected?

No. The exposed pad in SOT402-1 (TSSOP14) is a mechanical heatsink feature only-not connected to any internal node. It may be left floating or soldered to a ground plane for thermal improvement, but no electrical connection is required or recommended per Nexperia's package documentation.

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

Yes. MR is active LOW and internally unconnected; a 10 kΩ pull-up to V_CC is required to ensure reliable deassertion during power-up and prevent spurious resets caused by floating input. This is explicitly recommended in Nexperia's application guidance for AEC-Q100 devices.