Texas Instruments SN74AHC1G08DBVT

Overview

SN74AHC1G08DBVT from Texas Instruments is a single 2-input positive-AND gate in SOT-23 (DBV) package, operating from 2 V to 5.5 V supply, delivering 7 ns max propagation delay at 5 V, ±8-mA output drive, and Schmitt-trigger inputs for noise immunity in low-slew-rate signal paths-used in power sequencing control on server motherboards and embedded PCs.

For engineers reviewing the SN74AHC1G08DBVT datasheet, SN74AHC1G08DBVT pinout, SN74AHC1G08DBVT application, or SN74AHC1G08DBVT equivalent, key selection criteria include supply voltage range compatibility, input hysteresis tolerance, output drive strength at 3.3 V/5 V, and thermal performance in compact SOT-23 layouts.

Technical Context

The SN74AHC1G08DBVT implements standard positive-logic AND functionality (Y = A ● B) using advanced CMOS AHC technology, with balanced push-pull outputs and rail-to-rail input voltage tolerance up to 5.5 V independent of VCC. Its Schmitt-trigger inputs provide defined switching thresholds and immunity to slow-rising signals.

It operates across –55°C to +125°C ambient temperature, supports 15 pF and 50 pF load capacitances, and exhibits consistent tPLH/tPHL symmetry under both 3.3 V and 5 V supply conditions-enabling reliable use in mixed-voltage digital interfaces and power-control logic chains.

Key Specifications

Pinout & Package

SOT-23 (DBV) 5-pin plastic package, 2.9 mm × 2.8 mm footprint, 1.6 mm body height, JEDEC MO-178AC compliant. Pin 1 marked by dimple or bevel; device oriented with marking toward top-left in standard tape-and-reel feed direction (Q3 quadrant).

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74AHC1G08DBVT, SN74LVC1G08DBVT offers speed advantage at 3.3 V but sacrifices 2 V compatibility, while MC74VHC1G08DTT1G matches voltage and function closely but requires thermal validation in dense PCB layouts.

Availability

SN74AHC1G08DBVT is available at Aetrix Electronics and suitable for server motherboard power sequencing, embedded PC wake control, HVAC sensor interface, and field transmitter logic requiring stable component supply across industrial temperature ranges.

Supply support for SN74AHC1G08DBVT 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

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and logic solutions, with decades of expertise in high-reliability logic families and industrial-grade packaging.

The SN74AHC1G08DBVT belongs to the AHC logic family, designed for low-power, high-speed CMOS interfacing in space-constrained industrial and computing applications where wide supply range and noise immunity are critical.

FAQ

What is the maximum operating temperature for SN74AHC1G08DBVT?

The SN74AHC1G08DBVT is rated for operation from –55°C to +125°C ambient temperature. This full industrial range is validated per JEDEC JESD22-A108 and applies to the DBV (SOT-23) package variant. Thermal derating is not required within this range when mounted per recommended PCB layout guidelines and with adequate airflow or board copper thermal relief.

Does SN74AHC1G08DBVT support 2.5 V logic levels?

Yes, SN74AHC1G08DBVT fully supports 2.5 V operation: its recommended VCC range is 2 V to 5.5 V, and input thresholds (VIH/VIL) scale proportionally-for example, VIH = 1.7 V min and VIL = 0.7 V max at VCC = 2.5 V. Output VOH/VOL also meet AHC-compatible swing specifications at 2.5 V.

Is SN74AHC1G08DBVT pin-compatible with SN74LVC1G08DBVT?

Yes, SN74AHC1G08DBVT and SN74LVC1G08DBVT share identical SOT-23 (DBV) 5-pin pinout, terminal functions, and physical dimensions. However, they differ in DC and AC specifications-including input threshold scaling, propagation delay, and drive strength-so functional substitution requires verification against system timing and voltage margin requirements.

What is the purpose of Schmitt-trigger inputs in SN74AHC1G08DBVT?

The Schmitt-trigger inputs in SN74AHC1G08DBVT provide hysteresis (typically ~0.3 V at 5 V), ensuring clean, bounce-free switching even with slow-rising or noisy input signals-such as those from mechanical switches, thermistors, or long PCB traces. This eliminates metastability and reduces need for external RC filtering in SN74AHC1G08DBVT-based control logic.

Can SN74AHC1G08DBVT drive a 50 pF capacitive load at 5 V?

Yes, SN74AHC1G08DBVT is characterized for 50 pF loads: at VCC = 5 V, tPLH/tPHL are 5.8–7.9 ns (typ/max) with CL = 50 pF. The ±8-mA output drive ensures stable edge rates and minimal overshoot. Layout best practices-short traces, ground return proximity, and local decoupling-must still be followed to maintain signal integrity in SN74AHC1G08DBVT designs.