Diodes Incorporated 74AHC1G08QW5-7

Overview

74AHC1G08QW5-7 from Diodes Incorporated is an automotive-grade single 2-input positive AND gate in SOT25 package, operating from 2.0V to 5.5V supply, delivering ±8mA output drive at 4.5V, with propagation delay as low as 3.2ns (typ) at 5V/15pF, and qualified per AEC-Q100 Grade 1 (–40°C to +125°C) for engine control and body electronics logic interfacing.

For engineers reviewing the 74AHC1G08QW5-7 datasheet, 74AHC1G08QW5-7 pinout, 74AHC1G08QW5-7 application, or 74AHC1G08QW5-7 equivalent, this page delivers verified functional identity, validated pin mapping, confirmed automotive qualification status, real-world timing and drive specifications, and direct substitution guidance - all grounded in Diodes' official DS41450 Rev. 1–2 datasheet.

Technical Context

This device implements a standard positive Boolean AND function (Y = A · B) using advanced CMOS AHC logic architecture, with Schmitt-trigger inputs enabling robust noise immunity against slow-rising/falling signals in noisy automotive environments. It features balanced high/low output drive strength and matched propagation delays across input-to-output paths.

Designed for rail-to-rail operation between 2.0V and 5.5V, it supports mixed-voltage system interfacing without level shifters. Input voltage tolerance extends beyond V_CC, allowing flexible signal sourcing independent of supply rails - critical for legacy module integration and diagnostic line monitoring.

Key Specifications

Pinout & Package

SOT25 (3.0mm × 2.8mm × 1.2mm, 0.95mm lead pitch) surface-mount package with moisture sensitivity level 1 (J-STD-020) and matte tin-plated leads.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 2-input AND gate applications.

Compared with 74LVC1G08GW and SN74AHC1G08DBVR, the 74AHC1G08QW5-7 uniquely provides documented Grade 1 thermal validation, full PPAP documentation traceability, and IATF 16949 production assurance - making it the only choice for safety-critical automotive logic gating where audit-ready compliance is mandatory.

Availability

74AHC1G08QW5-7 is available at Aetrix Electronics and suitable for engine control units, body control modules, and ADAS camera interface circuits requiring stable component supply, long-term automotive lifecycle support, and guaranteed AEC-Q100 conformance.

Supply support for 74AHC1G08QW5-7 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability components for automotive, industrial, and computing markets with over 50 years of power management and signal integrity expertise.

The 74AHC1G08QW5-7 belongs to Diodes' AHC logic family - engineered specifically for automotive signal conditioning and interface consolidation, balancing speed, low power, and robustness across extended temperature ranges.

FAQ

Is the 74AHC1G08QW5-7 pin-compatible with standard SOT-23-5 logic gates?

Yes - it uses the industry-standard SOT25 (JEDEC TO-236AB) 5-pin layout with identical pin assignments (A, B, GND, Y, V_CC) as 74AHC1Gxx series devices from Diodes, Nexperia, and TI. No PCB redesign is needed when substituting within the same logic family and voltage class.

Does this device require external pull-up or pull-down resistors on unused inputs?

No - unused inputs must be tied to V_CC or GND per Diodes' recommended operating conditions (Note 7), but internal input structure does not rely on external biasing. Leaving inputs floating violates AEC-Q100 reliability requirements and may cause excessive ICC or oscillation.

What is the maximum capacitive load this gate can drive while maintaining specified timing?

Diodes specifies timing up to 50pF load capacitance (t_PD = 4.6ns typ at 5V). Driving >50pF increases propagation delay nonlinearly and may exceed 10ns at 100pF; for heavier loads, add a buffer stage or select a higher-drive logic family like ABT or ALVC.

Can the 74AHC1G08QW5-7 interface directly with 1.8V logic outputs?

No - its V_IH minimum is 1.5V at V_CC = 2.0V, but 1.8V logic typically swings to only ~1.35V HIGH. To interface reliably, use a level translator or select a 1.8V-tolerant gate such as 74LVC1G08, which guarantees V_IH ≤ 0.63×V_CC.