Diodes Incorporated 74AHC1G08SE-7

Overview

74AHC1G08SE-7 from Diodes Incorporated is a single 2-input positive AND gate in SOT353 package, operating from 2.0V to 5.5V supply, delivering ±8 mA output drive at 5.0V, with Schmitt-trigger inputs for noise immunity, and RoHS-compliant lead-free finish. It performs the Boolean function Y = A • B in general-purpose logic interfaces for consumer and embedded systems.

For engineers reviewing the 74AHC1G08SE-7 datasheet, 74AHC1G08SE-7 pinout, 74AHC1G08SE-7 application, or 74AHC1G08SE-7 equivalent, key selection factors include input hysteresis tolerance, propagation delay under 8.0 ns (VCC = 5V, CL = 15pF), rail-to-rail output swing, ESD robustness (2 kV HBM), and SOT353 thermal resistance (θJA = 430°C/W).

Technical Context

This device implements a non-inverting combinational logic function with CMOS-compatible input thresholds and push-pull output stage. Its Schmitt-trigger inputs provide 0.3–0.5 V hysteresis across VCC = 2–5.5 V, enabling reliable operation with slow-rising or noisy signals.

The gate supports mixed-voltage interfacing due to wide VIH/VIL ranges (e.g., VIH ≥ 3.85 V at VCC = 5.5 V) and operates over –40°C to +125°C ambient temperature. Propagation delay is load-dependent: tPD = 3.2 ns (typ) at VCC = 5 V, CL = 15 pF, and degrades to 8.0 ns (max) under worst-case conditions.

Key Specifications

Pinout & Package

SOT353 is a 5-pin, ultra-thin, surface-mount plastic package (2.0 × 2.2 mm footprint, 0.95 mm height) with gull-wing leads, optimized for high-density PCB layouts and automated assembly. Thermal resistance θJA = 430°C/W reflects its compact thermal path.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74AHC1G08DBVR and 74LVC1G08GW,125, the 74AHC1G08SE-7 offers superior ESD robustness (2 kV HBM vs. 1.5 kV), identical SOT353 footprint for drop-in replacement in space-constrained designs, and guaranteed operation down to –40°C with no derating-making it optimal for industrial edge nodes and automotive body-control modules.

Availability

74AHC1G08SE-7 is available at Aetrix Electronics and suitable for PC peripheral interface, USB device power control, digital camera sensor sync, and industrial I/O expansion requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.

Supply support for 74AHC1G08SE-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, headquartered in Plano, Texas, serving industrial, computing, consumer, and communications markets with high-reliability, cost-optimized components.

The 74AHC logic family targets low-power, high-speed general-purpose digital interfacing, emphasizing rail-to-rail operation, wide voltage range, and robust ESD/latch-up performance for legacy and mixed-voltage system integration.

FAQ

What is the maximum recommended capacitive load for 74AHC1G08SE-7?

The datasheet specifies switching characteristics up to CL = 50 pF. At this load, tPD increases to 10.5 ns (max) at VCC = 5 V. Driving >50 pF risks exceeding timing margins and increasing dynamic power; external buffering is advised for heavier loads.

Can unused inputs be left floating?

No. Per datasheet Note 3, unused inputs must be tied to VCC or GND to prevent undefined logic states, increased ICC, and potential oscillation. Floating inputs may cause excessive current draw or erratic output behavior due to CMOS threshold sensitivity.

Does 74AHC1G08SE-7 support mixed-voltage operation between input and output?

No. The device has a single VCC rail; all inputs and outputs are referenced to that supply. However, VIH/VIL thresholds scale with VCC (e.g., VIH ≥ 3.85 V at VCC = 5.5 V), enabling interoperability with higher-voltage logic families when VCC matches the driven domain.

Is thermal derating required for continuous operation at 125°C ambient?

No derating is specified in the datasheet. The device is characterized for full functionality at TA = –40°C to +125°C, with junction temperature limited by θJA = 430°C/W and power dissipation <1 mW typical. Ensure PCB copper area meets AP02001 pad layout for thermal reliability.