Nexperia USA Inc. 74AHC164PW-Q100J

Overview

74AHC164PW-Q100 from Nexperia is an automotive-qualified 8-bit serial-in/parallel-out shift register with dual serial data inputs (DSA, DSB), eight CMOS-level parallel outputs (Q0–Q7), master reset (MR), and edge-triggered clock (CP). It operates from 2.0 V to 5.5 V across –40 °C to +125 °C and supports mixed-voltage interfacing via overvoltage-tolerant inputs up to 5.5 V. It is used in automotive body control modules for LED matrix expansion and GPIO pin multiplication.

For engineers reviewing the 74AHC164PW-Q100 datasheet, 74AHC164PW-Q100 pinout, 74AHC164PW-Q100 application, or 74AHC164PW-Q100 equivalent, key selection criteria include its AEC-Q100 Grade 1 qualification, dual-input data enable logic, LOW-to-HIGH clock triggering, MR-driven synchronous clear, and TSSOP14 package compatibility with automated optical inspection.

Technical Context

This shift register implements a synchronous 8-stage positive-edge-triggered shift register with asynchronous active-low master reset. Data propagation occurs on the rising edge of CP, with DSA and DSB functioning as complementary serial inputs where one serves as an enable for the other - enabling flexible serial data routing without external gating logic.

The device integrates Schmitt-trigger inputs for high noise immunity, supports rail-to-rail output swing, and features balanced tPLH/tPHL propagation delays (e.g., 4.5 ns typical at VCC = 5 V, CL = 15 pF). Its overvoltage-tolerant inputs allow direct interfacing with 5 V logic while powered from 3.3 V, simplifying level translation in heterogeneous automotive subsystems.

Key Specifications

Pinout & Package

TSSOP14 package (SOT402-1): plastic thin shrink small outline, 14 leads, 4.4 mm body width, side-wettable flanks for AOI-compatible solder joint inspection.

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 superior noise immunity in 3.3 V systems; versus SN74LV164APWRE4, it delivers full under-hood temperature support and drop-in PCB compatibility for AEC-Q100-compliant designs.

Availability

74AHC164PW-Q100 is available at Aetrix Electronics and suitable for automotive body electronics, instrument cluster subsystems, and HVAC control modules requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74AHC164PW-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 energy-efficient components for automotive, industrial, and consumer markets, with leadership in logic, MOSFETs, and ESD protection.

The 74AHC164PW-Q100 belongs to Nexperia's automotive-qualified AHC logic family, designed specifically for robust serial data expansion in safety-critical vehicle subsystems operating across extreme ambient temperatures.

FAQ

What is the maximum clock frequency supported by the 74AHC164PW-Q100?

The 74AHC164PW-Q100 supports up to 175 MHz maximum clock frequency at VCC = 5.0 V and CL = 15 pF, with guaranteed operation to 85 MHz at VCC = 5.0 V and CL = 50 pF across –40 °C to +125 °C. This is validated per dynamic characteristics Table 7 and applies to both CP-to-Qn and MR-to-Qn timing paths.

Can DSA and DSB be used simultaneously for data input?

No - DSA and DSB are not simultaneous inputs. DSA acts as an enable for DSB: when DSA is HIGH, data on DSB is loaded on the next CP rising edge; when DSA is LOW, DSB is ignored and no new data enters. This dual-input architecture allows hardware-selectable serial sources without external logic.

Is the master reset (MR) input synchronous or asynchronous?

The MR input is asynchronous and active LOW. It forces all Q0–Q7 outputs LOW immediately, independent of the CP signal or current shift register state. The reset action completes within t_pd (max 16.0 ns at VCC = 3.6 V, CL = 50 pF) and does not require a clock edge to take effect.

Does the 74AHC164PW-Q100 require external pull-up or pull-down resistors on unused inputs?

No - all inputs feature Schmitt-trigger action and defined VIH/VIL thresholds across the full VCC range. Unused inputs must still be tied to a valid logic level (VCC or GND) to prevent floating states and unintended switching, but no external resistors are needed for threshold stabilization due to built-in hysteresis.