Nexperia USA Inc. 74LVC374AD-Q100J

Overview

74LVC374AD-Q100 from Nexperia is an automotive-grade octal positive-edge-triggered D-type flip-flop with 3-state outputs, 1.2 V to 3.6 V supply operation, 5.5 V overvoltage-tolerant inputs/outputs, and IOFF partial power-down protection. It functions as a synchronized 8-bit data latch in automotive body control modules, where it buffers sensor interface signals while enabling bus isolation during sleep mode.

For engineers reviewing the 74LVC374AD-Q100 datasheet, 74LVC374AD-Q100 pinout, 74LVC374AD-Q100 application, or 74LVC374AD-Q100 equivalent, key selection criteria include its AEC-Q100 Grade 1 qualification, -40 °C to +125 °C operating range, 3.0 ns minimum clock pulse width at 3.3 V, 7.0 ns max propagation delay, and SO20 (SOT163-1) package compatibility with legacy PCB footprints.

Technical Context

This device implements eight independent edge-triggered D flip-flops sharing a common clock (CP) and output enable (OE) input. Each flip-flop captures Dn input state on the LOW-to-HIGH CP transition, with set-up time as low as 2.0 ns and hold time of 1.5 ns at VCC = 3.3 V.

Its 3-state outputs are controlled solely by OE (active LOW), with no effect on internal register state. The IOFF circuit ensures zero backflow current when VCC = 0 V and I/O pins are biased up to 5.5 V - critical for hot-swap and power-gating scenarios in automotive domain controllers.

Key Specifications

Pinout & Package

74LVC374AD-Q100 is housed in a plastic small outline package (SO20, SOT163-1) with 20 leads, 7.5 mm body width, and standard 1.27 mm lead pitch - compatible with automated optical inspection and reflow soldering.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar octal D-type flip-flop applications.

Compared with SN74LVC374AQPWRQ1 and 74LVC374APW-Q100, the 74LVC374AD-Q100 offers superior manufacturability in legacy SO20 assembly lines, guaranteed side-wettable flank inspection, and proven thermal performance in high-ambient under-hood environments - making it optimal for cost-sensitive, high-volume BCM deployments.

Availability

74LVC374AD-Q100 is available at Aetrix Electronics and suitable for automotive body control modules, ADAS sensor hubs, engine control unit diagnostics interfaces, and electric power steering motor control boards requiring stable component supply across extended product lifecycles.

Supply support for 74LVC374AD-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 focused on high-volume, high-reliability logic, discrete, and MOSFET solutions, with leadership in automotive-qualified components and advanced packaging.

The 74LVC374A-Q100 belongs to Nexperia's automotive logic portfolio, engineered specifically for robust signal integrity, mixed-voltage interoperability, and seamless integration into ISO 26262-compliant electronic control units.

FAQ

What is the maximum clock frequency supported by the 74LVC374AD-Q100 at 3.3 V?

At VCC = 3.3 V and ambient temperature up to +125 °C, the 74LVC374AD-Q100 supports a maximum clock frequency of 120 MHz, derived from its 7.0 ns maximum propagation delay (tpd) and 4.5 ns minimum clock pulse width (tW). This is validated per Table 7 in the Rev. 3 datasheet and applies across the full automotive temperature range.

Does the 74LVC374AD-Q100 require external pull-up or pull-down resistors on OE or CP inputs?

No. The OE and CP inputs feature integrated Schmitt-trigger circuitry with defined threshold voltages (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 3.3 V), eliminating the need for external biasing. Internal input hysteresis ensures noise immunity, and the inputs draw less than ±0.1 μA leakage current - making them compatible with open-drain MCU GPIOs or direct FPGA connections.

Can the 74LVC374AD-Q100 safely interface with a 5 V microcontroller while powered from 3.3 V?

Yes. Its inputs are overvoltage tolerant up to 5.5 V regardless of VCC level, and outputs drive to valid logic levels (VOH ≥ 2.2 V, VOL ≤ 0.55 V at 24 mA) compatible with 5 V TTL inputs. This allows direct connection to 5 V MCUs without level-shifting circuitry - confirmed in Section 1 and Table 5 of the datasheet.

How does the IOFF function behave when VCC is ramping during power-up or power-down sequences?

The IOFF circuit activates automatically when VCC falls below approximately 0.8 V, forcing outputs into high-impedance state before VCC reaches 0 V. During power-up, outputs remain disabled until VCC exceeds 1.0 V, preventing bus contention. This behavior is guaranteed across -40 °C to +125 °C and is verified per JEDEC JESD78 latch-up testing - detailed in Section 2 and Table 9.