Diodes Incorporated 74LVC1G97DW-7

Overview

74LVC1G97DW-7 from Diodes Incorporated is a single three-input configurable multiple-function logic gate in SOT363 package, supporting MUX, AND, OR, NAND, NOR, inverter, and non-inverting buffer functions via 3-bit input pattern selection. It operates from 1.65V to 5.5V, delivers ±24mA output drive at 3.3V, features 5.5V-tolerant inputs, and includes IOFF circuitry for partial power-down protection. Used in voltage-level shifting and power-down signal isolation in portable consumer electronics.

For engineers reviewing the 74LVC1G97DW-7 datasheet, 74LVC1G97DW-7 pinout, 74LVC1G97DW-7 application, or 74LVC1G97DW-7 equivalent, this page provides verified functional configurations, Schmitt-trigger input behavior implications, IOFF leakage specs, thermal resistance (θJA = 371°C/W), and real-world logic reconfiguration use cases-not generic logic gate summaries.

Technical Context

The device implements a fixed 3-input combinational lookup table with eight possible output states determined by IN2/IN1/IN0, enabling user-selectable logic functions without external programming. Its Schmitt-trigger inputs provide hysteresis (ΔVT = 0.32–1.40V depending on VCC), improving noise immunity in noisy digital environments.

IOFF circuitry actively disables the output when VCC = 0V, limiting backflow current to ±2μA even with 5.5V applied to I/O pins-critical for mixed-voltage system power sequencing. Propagation delay ranges from 0.7ns (min) to 18.0ns (max) across temperature and supply conditions, with CL = 30–50pF.

Key Specifications

Pinout & Package

SOT363 package: 6-pin compact surface-mount package with exposed pad option (not thermally enhanced per datasheet), footprint dimensions 2.15mm × 2.10mm × 0.95mm (D × E × A2), moisture sensitivity level 1.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar configurable logic gate applications.

Compared with SN74LVC1G97DBVR, the 74LVC1G97DW-7 trades thermal advantage for robust noise immunity via Schmitt inputs; compared with 74LVC1G98GW,125, it halves static current at the cost of logic density-making it optimal for single-function, battery-sensitive designs.

Availability

74LVC1G97DW-7 is available at Aetrix Electronics and suitable for voltage-level shifting, power-down signal isolation, and general-purpose logic reconfiguration requiring stable component supply across consumer, industrial, and automotive design cycles.

Supply support for 74LVC1G97DW-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 semiconductor company specializing in discrete, analog, and logic solutions, with design centers in Asia, Europe, and the U.S., and manufacturing in ISO/TS 16949-certified facilities.

The 74LVC logic family targets low-voltage, mixed-supply digital interfacing applications-designed for interoperability across 1.65V–5.5V domains while maintaining industry-standard speed/power trade-offs.

FAQ

What logic functions does the 74LVC1G97DW-7 support, and how are they selected?

The device supports eight logic functions: 2-to-1 MUX, 2-input AND, OR, NAND, NOR (with one or both inputs inverted), inverter, and non-inverting buffer. Selection is achieved by applying specific high/low voltage combinations to the three inputs (IN2, IN1, IN0) per the Function Table-no external programming or clocking is required.

Does the 74LVC1G97DW-7 require external pull-up or pull-down resistors on unused inputs?

Yes. Per datasheet Note 6, unused inputs must be tied to VCC or GND to prevent floating states that increase ICC and risk metastability. The device does not include internal weak pull-ups/pull-downs, and leaving inputs unconnected may cause excessive current draw or erratic output behavior.

Can the 74LVC1G97DW-7 be used in a 5V-only system without level shifting?

No-it requires a minimum VCC of 1.65V but cannot operate with VCC = 0V while inputs are at 5V. However, its 5.5V-tolerant inputs allow it to accept 5V signals when powered from 3.3V or 2.5V rails, making it ideal for level translation from higher-voltage peripherals to lower-voltage controllers.

How does the Schmitt-trigger input affect timing analysis in synchronous designs?

Schmitt-trigger inputs introduce asymmetric threshold voltages (VT+ and VT−), increasing effective input rise/fall time but eliminating noise-induced glitches. For timing-critical paths, designers must account for worst-case tpd (18.0ns at −40°C to +125°C) and ensure input slew rates meet minimum 2ns/V requirement per test condition-especially when driving from slow microcontroller GPIOs.