Diodes Incorporated 74AHC1G07QW5-7

Overview

74AHC1G07QW5-7 from Diodes Incorporated is an automotive-grade single non-inverting buffer with open-drain output, designed for level-shifting and wired-OR logic in 2.0V–5.5V systems. It delivers 8mA sink current at V_CC = 4.5V, supports -40°C to +125°C operation, and features Schmitt-trigger inputs for noise immunity-used in automotive body control modules for sensor interface buffering.

For engineers reviewing the 74AHC1G07QW5-7 datasheet, 74AHC1G07QW5-7 pinout, 74AHC1G07QW5-7 application, or 74AHC1G07QW5-7 equivalent, key selection criteria include open-drain drive capability, AEC-Q100 Grade 1 qualification, propagation delay (≤7.0 ns @ 5V/50pF), input voltage tolerance beyond V_CC, and SOT25 package thermal resistance (θ_JA = 184°C/W).

Technical Context

This device implements a positive Boolean function Y = A using CMOS AHC logic, with all inputs buffered by Schmitt triggers to tolerate slow edge rates (≤100 ns/V at 3.3V). Its open-drain output requires an external pull-up resistor and enables active-low wired-OR or active-high wired-AND bus configurations without contention.

It operates across 2.0V–5.5V supply range with rail-to-rail input voltage support (–0.5V to 6.5V), low ICC (≤40 µA max), and robust ESD protection (2 kV HBM, 1 kV CDM), meeting AEC-Q100 stress test requirements for automotive under-hood environments.

Key Specifications

Pinout & Package

SOT25 (3.0 mm × 2.8 mm × 1.2 mm, 0.95 mm lead pitch) - compact surface-mount package with exposed pad not present; moisture sensitivity level 1 per J-STD-020.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar open-drain buffer applications.

Compared with SN74LVC1G07DBVR and 74AUP1G07GW,125, the 74AHC1G07QW5-7 uniquely balances automotive qualification, 8mA drive strength, and 7ns speed - making it optimal for real-time body electronics where reliability and responsiveness are jointly constrained.

Availability

74AHC1G07QW5-7 is available at Aetrix Electronics and suitable for automotive body control units, industrial sensor interfaces, lighting control modules, and serial bus level-shifting applications requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74AHC1G07QW5-7 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 integrated circuits, specializing in high-reliability solutions for automotive, industrial, and computing markets with ISO/TS 16949 and IATF 16949 certified operations.

The 74AHC logic family targets automotive and industrial applications requiring wide supply range, robust ESD performance, and AEC-Q100 qualification - specifically engineered for signal conditioning and interface bridging in harsh environments.

FAQ

Can the 74AHC1G07QW5-7 drive an LED directly?

Yes - its open-drain output can sink up to 8mA at V_CC = 4.5V, sufficient for indicator LEDs with appropriate series resistance. The external pull-up defines the HIGH voltage level, while the IC controls the LOW state. Ensure total sink current remains within absolute maximum ratings and thermal limits for continuous operation.

Is a pull-up resistor required for normal operation?

Yes - the open-drain output cannot actively drive HIGH; a pull-up resistor to V_CC or another logic rail is mandatory to establish a defined HIGH logic level. Typical values range from 1kΩ to 10kΩ depending on rise time and bus capacitance requirements.

Does the NC pin require any PCB layout consideration?

Yes - Pin 5 is internally unconnected and must remain electrically floating. Do not route traces to it, apply solder mask over it, or connect it to ground or power. PCB layout should avoid copper pour or thermal relief under this pad to prevent unintended coupling or solder bridging.

How does Schmitt-trigger input improve noise immunity?

Schmitt-trigger inputs provide hysteresis (≥0.3V at 3.3V), meaning the threshold for rising edges (~1.5V) differs from falling edges (~1.2V). This prevents multiple transitions when input signals cross the threshold slowly due to noise or ringing, ensuring clean, single-event logic responses on long or unterminated traces.