Nexperia USA Inc. 74HC597PW-Q100J

Overview

74HC597PW-Q100 from Nexperia is an AEC-Q100 Grade 1 qualified 8-bit parallel-in, serial-out shift register with input flip-flops, featuring separate positive-edge-triggered storage and shift clocks (STCP and SHCP), asynchronous master reset (MR), parallel load (PL), and serial data input (DS). It operates from 2.0 V to 6.0 V across –40 °C to +125 °C and delivers 35 ns propagation delay at 6.0 V in automotive body control modules for LED matrix scanning.

For engineers reviewing the 74HC597PW-Q100 datasheet, 74HC597PW-Q100 pinout, 74HC597PW-Q100 application, or 74HC597PW-Q100 equivalent, this device supports high-noise-immunity digital signal conditioning in automotive infotainment display interfaces, ECU sensor data aggregation, and distributed lighting control systems requiring deterministic timing and latch-up immunity exceeding 100 mA.

Technical Context

The device integrates two synchronized but independently clocked registers: an 8-bit parallel storage register (latched on STCP rising edge) feeding a serial shift register (clocked on SHCP rising edge), enabling pipelined data capture and serial output. Input clamping diodes allow safe interfacing to voltages exceeding VCC when used with current-limiting resistors.

Its dual-clock architecture decouples parallel data acquisition from serial transmission, supporting real-time buffering in CAN/LIN gateway nodes. The MR (active-low asynchronous reset) and PL (active-low parallel load) inputs provide deterministic initialization and direct register override without clock dependency.

Key Specifications

Pinout & Package

TSSOP16 plastic thin shrink small outline package (SOT403-1), 16-pin, 4.4 mm body width, 0.65 mm pitch - optimized for high-density automotive PCB layouts with thermal performance derating of 8.5 mW/K above 91 °C.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 8-bit parallel-in, serial-out shift register applications.

Compared with 74HCT597PW-Q100 and SN74LV595AQPWRQ1, the 74HC597PW-Q100 uniquely combines CMOS noise immunity, input clamping, dual-clock flexibility, and AEC-Q100 Grade 1 qualification - making it the only choice for safety-critical, mixed-voltage automotive data pipelines requiring deterministic timing and robustness.

Availability

74HC597PW-Q100 is available at Aetrix Electronics and suitable for automotive body control modules, infotainment display interfaces, and ECU sensor data aggregation requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74HC597PW-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 components for automotive, industrial, and consumer markets, with leadership in logic, MOSFETs, and ESD protection.

The 74HC597-Q100 belongs to Nexperia's automotive-qualified logic portfolio, engineered specifically for robust digital signal conditioning in harsh-temperature, high-reliability vehicle subsystems such as lighting, powertrain, and ADAS sensor interfaces.

FAQ

What is the maximum clock frequency supported by the 74HC597PW-Q100?

The device supports up to 35 MHz maximum SHCP frequency at VCC = 6.0 V and CL = 50 pF, with typical propagation delay of 16 ns. At 4.5 V, fmax drops to 24 MHz due to reduced drive strength; design margin requires verifying setup/hold times against actual PCB trace delays and load capacitance.

Can the 74HC597PW-Q100 interface directly with 3.3 V microcontrollers?

Yes - its CMOS inputs accept VIH ≥ 3.15 V (min) at VCC = 4.5 V, and VOH ≥ 3.98 V (min) at IO = –4.0 mA, ensuring reliable 3.3 V logic compatibility when powered at 4.5 V or 5 V. For 3.3 V VCC operation, VIH minimum is 1.5 V, fully compatible with standard 3.3 V LVTTL outputs.

How does the PL (parallel load) input interact with the shift register operation?

When PL is pulled LOW, the current contents of the storage register (loaded via STCP) are immediately transferred into the shift register, overriding any ongoing serial shifting. This allows instantaneous update of serial output data without waiting for SHCP edges - critical for glitch-free display updates or safety-critical state changes.

Is the 74HC597PW-Q100 pin-compatible with the 74HC595?

No - the 74HC597PW-Q100 has distinct pinout and functionality: it features separate STCP/SHCP clocks and PL/MR controls, whereas the 74HC595 uses a single clock and lacks parallel load override. Pin mapping differs significantly (e.g., DS on Pin 14 vs. SER on Pin 14 in 595), requiring PCB redesign for substitution.