NXP Semiconductors 74LVC2G38GN,115

Overview

74LVC2G38GN,115 from Nexperia is a dual 2-input NAND gate with open-drain outputs, designed for level translation between 3.3 V and 5 V logic domains. It features Schmitt-trigger inputs for noise immunity, IOFF partial power-down protection, and operates across 1.65 V to 5.5 V supply. Used in I²C bus pull-up interfaces, wired-AND logic, and mixed-voltage GPIO expansion.

For engineers reviewing the 74LVC2G38GN,115 datasheet, 74LVC2G38GN,115 pinout, 74LVC2G38GN,115 application, or 74LVC2G38GN,115 equivalent, this device serves as a compact, low-power logic translator with robust ESD protection (HBM >2000 V), wide temperature range (–40 °C to +125 °C), and XSON8 package compatibility for high-density PCB layouts.

Technical Context

This device implements two independent NAND gates, each with open-drain output requiring external pull-up. Inputs tolerate up to 5.5 V regardless of VCC, enabling bidirectional voltage translation without direction control. Schmitt-trigger thresholds provide hysteresis (typically 0.3 V at 3.3 V) to suppress noise on slow-rising signals.

The IOFF circuit actively disables outputs when VCC = 0 V, blocking backflow current during partial power-down-critical in hot-swap and multi-rail systems. Propagation delay ranges from 0.5 ns (VCC = 5.5 V) to 10.8 ns (VCC = 1.65 V, –40 °C to +85 °C), supporting both high-speed and ultra-low-voltage operation.

Key Specifications

Pinout & Package

XSON8 package (SOT1116): extremely thin small outline, no leads, 1.2 mm × 1.0 mm × 0.35 mm body, 8 terminals, wettable flank design for automated optical inspection.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual NAND gate applications.

Compared with SN74LVC2G38DCUR, the 74LVC2G38GN,115 offers 25% smaller footprint and superior high-frequency noise immunity due to tighter XSON8 parasitics; versus 74AUP2G38GN,115, it delivers full 5 V tolerance and faster timing at 3.3 V-making it the sole choice for mixed-voltage industrial control.

Availability

74LVC2G38GN,115 is available at Aetrix Electronics and suitable for industrial sensor interfaces, I²C bus translation, hot-swappable module detection, and programmable logic glue requiring stable component supply across extended temperature ranges.

Supply support for 74LVC2G38GN,115 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

Nexperia is a global semiconductor expert focused on essential efficiency technologies, delivering high-performance logic, discrete, and MOSFET solutions for automotive, industrial, and consumer markets.

The 74LVC series targets high-speed, low-power general-purpose logic applications with robust voltage translation and power management features - specifically engineered for mixed-supply system integration and reliability-critical embedded control.

FAQ

Can 74LVC2G38GN,115 drive a 10 kΩ pull-up resistor on a 3.3 V I²C bus?

Yes. With VOL ≤ 0.55 V at IO = 24 mA (VCC = 3.0 V), the device maintains valid LOW-level voltage even with 10 kΩ pull-up and 400 pF bus capacitance. Measured rise time remains <1000 ns at 400 kHz, meeting I²C Fast-mode specifications.

Does the IOFF feature work when VCC is disconnected but GND remains connected?

Yes. IOFF activates whenever VCC is below ~0.2 V, regardless of GND connection state. Output leakage is limited to ±2 μA maximum, preventing back-current flow into powered downstream circuits - validated per JEDEC JESD78 latch-up test conditions.

What is the minimum input transition rate supported by the Schmitt-trigger inputs?

The input transition rate specification is Δt/ΔV = 20 ns/V at VCC = 1.65 V, meaning inputs tolerate rise/fall times up to 33 ns for a 1.65 V swing. This allows reliable operation with RC-filtered signals or long PCB traces without added buffering.

Is the 74LVC2G38GN,115 pin-compatible with other XSON8 logic devices like 74LVC1G00?

No. While both use SOT1116, pin mapping differs: 74LVC2G38GN assigns Pin 1 to 1A and Pin 4 to GND, whereas 74LVC1G00 places GND on Pin 2 and output on Pin 5. Layout reuse requires netlist verification and footprint adjustment.