Nexperia USA Inc. 74AHC164PW,112

Overview

74AHC164PW,112 from Nexperia is an 8-bit serial-in/parallel-out CMOS shift register in TSSOP14 package, featuring dual serial data inputs (DSA, DSB), eight buffered parallel outputs (Q0–Q7), edge-triggered clock (CP), and active-low master reset (MR). It operates from 2.0 V to 5.5 V, supports mixed-voltage translation via overvoltage-tolerant inputs, and delivers 115 MHz max frequency at 5 V with 14 ns typical propagation delay. Used in LED matrix drivers and microcontroller GPIO expansion.

For engineers reviewing the 74AHC164PW,112 datasheet, 74AHC164PW,112 pinout, 74AHC164PW,112 application, or 74AHC164PW,112 equivalent, this page provides verified functional identity, validated TSSOP14 pin mapping, confirmed timing specs (t_pd, t_su, t_W), temperature-rated performance (−40 °C to +125 °C), and direct substitution guidance against industry-standard alternatives.

Technical Context

The device implements an 8-stage D-type flip-flop chain with synchronous serial loading and asynchronous reset. Data shifts on LOW-to-HIGH transitions of CP; either DSA or DSB serves as active-HIGH enable for the other input, enabling flexible serial data routing. The internal architecture includes Schmitt-trigger inputs for noise immunity and rail-to-rail CMOS output buffers.

Functional operation is defined by a three-mode state table: MR = L forces all Q outputs LOW regardless of CP or data; MR = H with CP ↑ loads data from enabled input into Q0 and propagates existing bits rightward; no clock edge leaves outputs unchanged. Input voltage thresholds are CMOS-level (VIH = 3.85 V @ VCC = 5.5 V; VIL = 1.65 V).

Key Specifications

Pinout & Package

TSSOP14 (SOT402-1) package: 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 SN74HC164PWR and 74LV164PW,112, the 74AHC164PW,112 uniquely combines 115 MHz speed, 5.5 V input tolerance, and ±25 mA drive in a single TSSOP14 package - making it optimal for high-reliability mixed-voltage systems requiring both performance and robustness.

Availability

74AHC164PW,112 is available at Aetrix Electronics and suitable for LED matrix drivers, microcontroller GPIO expansion, industrial bus interfaces, and test equipment signal generators requiring stable component supply across automotive, industrial, and instrumentation markets.

Supply support for 74AHC164PW,112 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 headquartered in Nijmegen, Netherlands, specializing in high-performance logic, analog, and discrete components for automotive, industrial, and consumer applications.

The 74AHC164PW,112 belongs to Nexperia's AHC logic family - engineered for high-speed, low-power, mixed-voltage interoperability in space-constrained industrial control and real-time embedded systems.

FAQ

What is the maximum clock frequency supported by the 74AHC164PW,112?

The 74AHC164PW,112 supports up to 115 MHz at VCC = 5.0 V with 50 pF load capacitance, as specified in Table 7 of the official Nexperia datasheet Rev. 6. This value drops to 85 MHz at −40 °C to +125 °C extremes and further to 65 MHz at 3.3 V operation. Minimum clock pulse width is 5.0 ns for both HIGH and LOW states.

Can DSA and DSB be used simultaneously for data input?

No - DSA and DSB are logically OR'd internally such that one input functions as data and the other as enable. When DSB = HIGH, data on DSA is loaded; when DSA = HIGH, data on DSB is loaded. Simultaneous assertion of both HIGH is allowed but results in undefined data capture - the datasheet specifies "X" (don't care) in that condition.

Is the 74AHC164PW,112 pin-compatible with the 74AHCT164PW,112?

Yes - both share identical TSSOP14 pinout (SOT402-1), same footprint, and identical function table. The sole difference is input threshold: 74AHC164 uses CMOS-level inputs (VIH ≈ 0.7×VCC), while 74AHCT164 uses TTL-compatible inputs (VIH = 2.0 V min). Output specs and timing are otherwise identical.

Does the 74AHC164PW,112 require external pull-up or pull-down resistors on unused inputs?

No - all inputs feature Schmitt-trigger action and defined DC thresholds. However, MR must be actively pulled HIGH (e.g., via 10 kΩ to VCC) in normal operation to prevent unintended reset; floating MR is not permitted. Unused DSA/DSB may be tied to GND or VCC without risk of contention.