Nexperia USA Inc. 74HC595BQ-Q100,115

Overview

74HC595BQ-Q100 from Nexperia is an AEC-Q100 Grade 1 qualified 8-bit serial-in/serial-or-parallel-out shift register with separate shift and storage registers, 3-state outputs, asynchronous master reset (MR), and serial output (Q7S) for cascading. It operates from -40 °C to +125 °C, supports 5 V CMOS-level inputs, delivers 6 mA output drive per Qn pin, and achieves up to 108 MHz typical shift clock frequency at VCC = 6 V - used in automotive body control modules for LED matrix expansion.

For engineers reviewing the 74HC595BQ-Q100 datasheet, 74HC595BQ-Q100 pinout, 74HC595BQ-Q100 application, or 74HC595BQ-Q100 equivalent, key selection criteria include its dual-clock architecture (SHCP/STCP), OE-controlled 3-state parallel outputs, MR-driven shift register reset, and DHVQFN16 package compatibility with AOI-enabled automotive PCB assembly.

Technical Context

The device implements two independent 8-bit registers: a shift register clocked by SHCP (LOW-to-HIGH) and a storage register clocked by STCP (LOW-to-HIGH), enabling pipelined data transfer. Cascading is supported via Q7S output feeding DS of the next stage.

Output enable (OE) is active LOW and places all eight Qn outputs in high-impedance state without affecting register contents; MR is asynchronous and resets only the shift register. Input clamp diodes allow safe interfacing with voltages exceeding VCC when current-limiting resistors are used.

Key Specifications

Pinout & Package

DHVQFN16 package (SOT763-1): 2.5 × 3.5 × 0.85 mm body, side-wettable flanks for automated optical inspection (AOI) of solder joints, thermal-enhanced construction for automotive under-hood reliability.

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 74HCT595BQ-Q100, the HC version offers lower input current and wider VCC range (2–6 V); versus SN74HC595QPWRQ1, the Nexperia DHVQFN16 provides superior thermal performance and AOI support essential for Tier-1 automotive production.

Availability

74HC595BQ-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 product lifecycles.

Supply support for 74HC595BQ-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 applications, with leadership in logic, MOSFETs, and ESD protection.

This device belongs to Nexperia's automotive-qualified 74HC logic family, engineered specifically for robust serial data expansion in harsh-temperature vehicle subsystems where signal integrity and long-term reliability are mandatory.

FAQ

Can 74HC595BQ-Q100 operate at 3.3 V supply?

Yes - the 74HC595BQ-Q100 supports VCC from 2.0 V to 6.0 V. At 3.3 V, VIH is guaranteed ≥ 2.1 V and VOL ≤ 0.33 V (IO = 6 mA), making it compatible with 3.3 V microcontrollers. Propagation delay increases to ~35 ns (SHCP to Q7S), which remains suitable for most automotive serial interfaces below 20 MHz.

What is the maximum number of 74HC595BQ-Q100 devices that can be cascaded?

There is no hard limit - cascading is constrained only by total propagation delay and clock skew. With 15 ns per stage (VCC = 6 V), 10 devices add ~150 ns delay; at 10 MHz clock, this consumes < 1.5% of cycle time. Signal integrity on Q7S–DS lines requires proper termination and trace length matching beyond ~5 devices in high-speed designs.

Does MR affect the storage register or only the shift register?

MR affects only the shift register: a LOW on MR asynchronously clears all eight stages of the shift register to zero, but leaves the storage register and Q0–Q7 outputs unchanged until the next STCP edge. This allows safe initialization of serial data flow without disrupting currently displayed or driven outputs.

Is the DHVQFN16 package RoHS and REACH compliant?

Yes - the SOT763-1 package used for 74HC595BQ-Q100 is lead-free, RoHS Directive 2011/65/EU compliant, and fully compliant with REACH Regulation (EC) No. 1907/2006, including SVHC screening. Nexperia provides full material declarations and CoC documentation upon request for automotive PPAP submission.