Nexperia USA Inc. 74VHC595D-Q100J

Overview

74VHC595D-Q100 from Nexperia is an AEC-Q100 Grade 1 qualified 8-bit serial-in/parallel-out shift register with storage latches and 3-state outputs, operating from -40 °C to +125 °C. It features separate shift (SHCP) and storage (STCP) clocks, asynchronous master reset (MR), and CMOS-level inputs. Used in automotive body control modules for LED matrix expansion and sensor data aggregation.

For engineers reviewing the 74VHC595D-Q100 datasheet, 74VHC595D-Q100 pinout, 74VHC595D-Q100 application, or 74VHC595D-Q100 equivalent, key selection criteria include its 3.0–5.5 V supply range, 170 MHz max clock frequency at 5 V, 3-state output enable (OE), Schmitt-trigger inputs, and SO16 package compatibility with legacy LSTTL systems.

Technical Context

This device implements two synchronized but independent 8-bit register stages: a serial-shift register accepting data on SHCP rising edges, and a parallel-output storage register loaded on STCP rising edges. The separation enables pipelined operation-data shifted into stage 0 on one SHCP edge appears at Q7S on the next, while prior contents transfer to Q0–Q7 only upon STCP assertion.

Its 3-state outputs (Q0–Q7) are controlled by active-low OE, allowing bus sharing without external logic. MR asynchronously clears all shift register bits but does not affect stored outputs until next STCP. Input thresholds support CMOS-level signaling (VIH = 3.85 V min at VCC = 5.5 V), and all inputs tolerate voltages up to 7.0 V regardless of VCC.

Key Specifications

Pinout & Package

74VHC595D-Q100 uses the SO16 plastic small outline package (SOT109-1), 16-pin, 3.9 mm body width, with gull-wing leads and standard 1.27 mm pitch. Pin 1 index located at top-left corner when notch faces upward.

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 74VHC595D-Q100, the 74VHCT595D-Q100 offers broader input voltage compatibility for heterogeneous logic families, while SN74HC595QPWRQ1 trades 6.8× lower maximum clock rate for tighter integration with TI's automotive ecosystem - making the Nexperia part optimal for high-throughput, mixed-supply automotive subsystems.

Availability

74VHC595D-Q100 is available at Aetrix Electronics and suitable for automotive body electronics, industrial LED control systems, and smart sensor interface modules requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74VHC595D-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 logic, analog, and MOSFET solutions optimized for automotive, industrial, and mobile applications.

The 74VHC595-Q100 series belongs to Nexperia's automotive-qualified logic portfolio, designed specifically to replace legacy 74LS595 in harsh-environment control units where reliability, speed, and AEC-Q100 compliance are mandatory.

FAQ

What is the minimum pulse width required on SHCP and STCP for reliable operation?

The minimum pulse width (tW) for both SHCP and STCP is 5.0 ns at VCC = 4.5–5.5 V. This ensures full logic state capture and avoids metastability in internal flip-flops. At lower VCC (3.0–3.6 V), tW remains 5.0 ns, verified across -40 °C to +125 °C. Pulse widths below this threshold may cause skipped clock edges or incomplete register transfers.

Can MR be used to clear outputs while preserving stored data in the shift register?

No. MR asynchronously resets only the 8-bit shift register stages (Q0–Q7 internal latches), leaving the storage register and parallel outputs (Q0–Q7 pins) unchanged until the next STCP edge. To clear outputs, assert MR and then apply STCP - this transfers zeros from the cleared shift register to the output latches.

Does the device support hot insertion or live swapping in powered systems?

No. 74VHC595D-Q100 lacks Ioff protection or power-off isolation. Applying VCC after inputs go active may cause latch-up or excessive current flow. Power sequencing must ensure VCC is stable before applying any input signals, per Nexperia's Absolute Maximum Ratings (VI limited to -0.5 V to VCC + 0.5 V).

How does the 3-state output behavior interact with OE during power-up?

At power-on, OE defaults HIGH (due to internal weak pull-up), placing Q0–Q7 in high-impedance state until firmware actively drives OE LOW. This prevents bus contention during boot. The weak pull-up ensures defined output state without external components, meeting automotive startup safety requirements.