Diodes Incorporated 74LVC1G57DW-7

Overview

74LVC1G57DW-7 from Diodes Incorporated is a single 3-input configurable multiple-function logic gate in SOT363 package, supporting AND, OR, NAND, NOR, XNOR, inverter, and non-inverting buffer configurations via input pattern selection. It operates from 1.65V to 5.5V, features ±24mA output drive at 3.3V, 5.1ns max propagation delay at 5V, and IOFF-enabled partial power-down protection. It enables voltage-level shifting in mixed-voltage digital interfaces such as USB peripheral control and I²C signal conditioning.

For engineers reviewing the 74LVC1G57DW-7 datasheet, 74LVC1G57DW-7 pinout, 74LVC1G57DW-7 application, or 74LVC1G57DW-7 equivalent, this device serves as a space-optimized, low-power logic configurator for board-level signal routing, power-down isolation, and flexible gate substitution in portable and embedded systems where footprint and supply flexibility are critical.

Technical Context

The 74LVC1G57DW-7 implements a programmable 3-input truth table with eight fixed output states determined solely by IN0/IN1/IN2 combinations-no external configuration pins or registers are used. Its Schmitt-trigger inputs provide hysteresis (0.3–1.4V ΔVT) for noise immunity in slow-rising signals, distinguishing it from standard CMOS gates.

IOFF circuitry actively disables outputs during VCC = 0V, blocking back-current flow up to ±50mA, making it suitable for hot-swap and partial-power-down architectures. Input tolerance to 5.5V allows direct interfacing with 5V logic while powered from 1.8V or 3.3V rails.

Key Specifications

Pinout & Package

SOT363 (6-pin, 2.2mm × 1.35mm, 0.65mm pitch) surface-mount package with exposed thermal pad option; RoHS-compliant, halogen-free, lead-free construction.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC1G57DBVR and 74LVC1G97GW,125, the 74LVC1G57DW-7 offers identical logic behavior and SOT363 compatibility but with Diodes Inc.'s optimized IOFF leakage (<200μA at +125°C) and tighter hysteresis control-critical for high-temperature automotive body-control modules.

Availability

74LVC1G57DW-7 is available at Aetrix Electronics and suitable for USB peripheral control, I²C bus isolation, pushbutton debouncing, and display backlight sequencing requiring stable component supply across industrial, computing, and consumer electronics programs.

Supply support for 74LVC1G57DW-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, energy-efficient components for power management, signal integrity, and protection.

The 74LVC1G57DW-7 belongs to Diodes' LVC logic family-designed for low-voltage, mixed-signal interfacing in portable, automotive, and industrial systems where supply flexibility and board space are constrained.

FAQ

Can the 74LVC1G57DW-7 operate with VCC = 1.65V while accepting 5V input signals?

Yes. The device supports 1.65V to 5.5V VCC and has 5.5V-tolerant inputs, enabling direct connection of 5V signals (e.g., legacy microcontroller GPIO) to any INx pin-even when powered from 1.65V. This eliminates external level-shifting components in mixed-voltage designs.

Does the Schmitt-trigger input behavior affect timing specifications?

No-the propagation delay (tpd) values in the datasheet (e.g., 5.1ns at 5V) are measured under standard CMOS switching conditions and include Schmitt-trigger latency. The hysteresis improves noise immunity without degrading worst-case timing, as confirmed by Diodes' characterization across –40°C to +125°C.

What is the maximum capacitive load the 74LVC1G57DW-7 can drive reliably?

The device is characterized up to 50pF load capacitance (CL) with guaranteed tpd and VOH/VOL performance. Driving >50pF may increase propagation delay and reduce noise margin; for >100pF loads, add a series resistor or use a higher-drive buffer like 74LVC1G125.

How does IOFF behave when VCC is ramping during power-up?

IOFF activates only when VCC falls below ~0.8V (per Diodes' characterization). During power-up, the output remains functional once VCC exceeds the minimum operating threshold (~1.65V); no undefined state occurs-output transitions cleanly from high-Z to active as VCC crosses 1.2V.