Nexperia USA Inc. 74HC373D-Q100,118

Overview

74HC373D-Q100 from Nexperia is an AEC-Q100 Grade 1 qualified octal D-type transparent latch with 3-state outputs, designed for automotive bus interfacing. It operates across 2.0 V to 6.0 V supply, features independent latch enable (LE, active HIGH) and output enable (OE, active LOW), and delivers propagation delay as low as 12 ns at VCC = 6.0 V - enabling reliable data capture in engine control units and ADAS domain controllers.

For engineers reviewing the 74HC373D-Q100 datasheet, 74HC373D-Q100 pinout, 74HC373D-Q100 application, or 74HC373D-Q100 equivalent, this device serves as a high-noise-immunity, temperature-stable latching interface between microcontrollers and multiplexed data buses in harsh automotive environments where latch transparency timing, output isolation, and ±100 mA latch-up immunity are critical selection criteria.

Technical Context

The device implements eight independent D-type latches with synchronous transparency controlled by LE: when LE is HIGH, Qn follows Dn in real time; when LE transitions LOW, the input state is captured and held. OE operates independently to place all eight outputs into high-impedance mode without affecting internal latch states.

Input clamping diodes allow safe interfacing to voltages exceeding VCC when used with current-limiting resistors. Its CMOS architecture ensures low static power (ICC ≤ 160 μA at +125 °C) and high noise immunity, while compliance with JESD7A (2.0–6.0 V) and JESD8C (2.7–3.6 V) standards guarantees interoperability across mixed-voltage systems.

Key Specifications

Pinout & Package

74HC373D-Q100 uses the SO20 (SOT163-1) package: plastic small outline, 20 leads, 7.5 mm body width, with standard 1.27 mm lead pitch and pin 1 index marker.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar octal transparent latch applications.

Compared with 74HC373D-Q100, the 74HCT373D-Q100 offers seamless integration into mixed-signal 5 V automotive subsystems without level translation, while the SN74LVTH373PWRE4 provides superior drive capability at the cost of automotive qualification and wider supply flexibility.

Availability

74HC373D-Q100 is available at Aetrix Electronics and suitable for engine control units, ADAS sensor interfaces, and body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74HC373D-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 leading semiconductor manufacturer specializing in high-performance, high-reliability logic, analog, and discrete components, with core expertise in automotive-grade silicon.

This device belongs to Nexperia's automotive-qualified logic portfolio, engineered specifically for robust data latching in electric powertrain, chassis, and driver-assistance systems operating under extreme thermal and electrical stress.

FAQ

Can 74HC373D-Q100 operate reliably at 2.0 V supply in automotive cold-crank conditions?

Yes. The device is fully specified down to 2.0 V across −40 °C to +125 °C, with maximum propagation delay of 150 ns and guaranteed VIH/VIL thresholds at that voltage. Cold-crank validation per ISO 16750-2 confirms functional operation at 2.2 V for 60 ms - well within its operational envelope.

What is the recommended PCB layout practice for minimizing crosstalk on the D0–D7 and Q0–Q7 buses?

Route D and Q lines as matched-length, 50 Ω controlled-impedance traces with ground pour on adjacent layers. Separate D and Q routing by ≥3× trace width, and place 100 nF ceramic decoupling capacitors within 3 mm of VCC and GND pins. Avoid routing beneath the IC body to prevent coupling through substrate.

Does OE assertion affect power consumption during latch hold mode?

No. When OE is HIGH, outputs enter high-impedance state but internal latches remain powered and retain stored data. ICC increases only marginally (≤1 μA) due to OE input buffer - total supply current stays ≤160 μA at +125 °C regardless of OE state.

How does the SO20 package (SOT163-1) perform thermally in sealed ECU enclosures?

The SO20 package has a junction-to-ambient thermal resistance (RθJA) of 109 °C/W. At 50 mW dissipation and +85 °C ambient, junction temperature reaches 139.5 °C - within the 150 °C absolute max. Derating begins above 109 °C at 12.3 mW/K, ensuring safe operation up to +125 °C ambient with proper board copper area.