Nexperia USA Inc. 74HC393D-Q100J

Overview

74HC393D-Q100 from Nexperia is an automotive-qualified dual 4-bit binary ripple counter IC with independent clock and master reset inputs per counter, CMOS-level input compatibility (2.0 V to 6.0 V supply), asynchronous active-HIGH reset, and HIGH-to-LOW edge-triggered counting. It delivers 107 MHz max clock frequency at 6.0 V and operates across -40 °C to +125 °C for engine control timing and body electronics synchronization.

For engineers reviewing the 74HC393D-Q100 datasheet, 74HC393D-Q100 pinout, 74HC393D-Q100 application, or 74HC393D-Q100 equivalent, this page provides verified functional behavior, SO14 package layout, AEC-Q100 Grade 1 qualification evidence, propagation delay specs (e.g., 12 ns tpd at 6.0 V), and direct substitution guidance against 74HCT393D-Q100 and SN74HC393DR.

Technical Context

This device implements two independent 4-stage ripple counters using cascaded T-type flip-flops, where each stage advances on the HIGH-to-LOW transition of its dedicated clock input (1CP or 2CP). Counting proceeds asynchronously-output transitions propagate with cumulative delay through Q0→Q1→Q2→Q3, enabling divide-by-2ⁿ (n = 1–8) functionality per counter.

The asynchronous master reset (1MR/2MR) forces all four outputs LOW regardless of clock state, and input clamp diodes permit safe interfacing to voltages exceeding VCC when used with current-limiting resistors. Its CMOS architecture ensures low static power (≤160 μA ICC at 125 °C) and high noise immunity (>1.35 V VIH min at 4.5 V).

Key Specifications

Pinout & Package

74HC393D-Q100 uses the SO14 (SOT108-1) plastic small outline package: 14-pin, 3.9 mm body width, gull-wing leads, JEDEC MS-012 compliant. Pin 1 index located at top-left corner with beveled edge marking.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual binary counter applications.

Compared with 74HC393D-Q100, the 74HCT393D-Q100 offers easier integration into 5 V TTL ecosystems, while the SN74HC393DR reduces cost where AEC-Q100 qualification and 125 °C operation are unnecessary - enabling tiered sourcing across vehicle domains.

Availability

74HC393D-Q100 is available at Aetrix Electronics and suitable for engine control units, body control modules, and instrument clusters requiring stable component supply with automotive-grade traceability and long-term lifecycle support.

Supply support for 74HC393D-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 discrete, logic, and MOSFET devices optimized for automotive, industrial, and consumer applications.

The 74HC393-Q100 belongs to Nexperia's automotive logic portfolio, designed specifically to meet AEC-Q100 Grade 1 requirements for under-hood timing functions including engine management, transmission control, and ADAS sensor synchronization.

FAQ

What is the maximum operating frequency of the 74HC393D-Q100?

The 74HC393D-Q100 achieves a maximum clock frequency of 107 MHz at VCC = 6.0 V and Tamb = 25 °C, dropping to 24 MHz at +125 °C per datasheet Table 7. This reflects the ripple counter's cumulative propagation delay across four flip-flops, making it suitable for high-speed division tasks in engine control timing chains.

Can the two counters operate independently with different clock sources?

Yes - 74HC393D-Q100 features fully independent clock inputs (1CP and 2CP) and master reset lines (1MR and 2MR), allowing each 4-bit counter to run from separate timing sources without electrical or functional coupling. This enables concurrent division ratios (e.g., /16 and /32) in multi-domain automotive subsystems.

Is external pull-up or pull-down resistance required on unused inputs?

No - all inputs include internal clamp diodes and have defined VIH/VIL thresholds. Unused inputs must be tied HIGH or LOW to prevent floating states that cause increased ICC and potential oscillation; Nexperia recommends hard-wiring to VCC or GND rather than relying on weak pull-ups.

Does the 74HC393D-Q100 support hot insertion or live circuit connection?

No - the device lacks hot-swap protection circuitry. Applying VCC before establishing proper GND connection or powering inputs prior to VCC may exceed absolute maximum ratings (e.g., VI > VCC + 0.5 V), risking latch-up or permanent damage. Power sequencing per datasheet Section 7 is mandatory in automotive modules.