Nexperia USA Inc. 74LVC2G38GT,115

Overview

74LVC2G38GT,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 in mixed-voltage systems. It features Schmitt-trigger inputs for noise immunity, IOFF partial power-down protection, and operates across 1.65 V to 5.5 V supply range with -40 °C to +125 °C temperature rating. Used in I²C bus pull-up interfaces and voltage-level shifting in industrial control modules.

For engineers reviewing the 74LVC2G38GT,115 datasheet, 74LVC2G38GT,115 pinout, 74LVC2G38GT,115 application, or 74LVC2G38GT,115 equivalent, this device delivers verified open-drain drive capability (±24 mA at VCC = 3.0 V), JEDEC-compliant 5 V-tolerant inputs/outputs, and validated IOFF behavior for hot-swap and partial-power-down system designs.

Technical Context

This logic gate implements two independent NAND functions with open-drain outputs, enabling wired-AND configurations and bidirectional level translation without external components. Each input includes Schmitt-trigger hysteresis (typ. 0.3 V at VCC = 3.3 V), supporting slow-rising signals from microcontrollers or sensors.

The IOFF circuit actively disables output terminals when VCC = 0 V, blocking backflow current up to ±50 mA and meeting JESD78 latch-up immunity (>250 mA). Propagation delays are specified from 0.5 ns (VCC = 5.5 V) to 10.8 ns (VCC = 1.65 V, -40 °C to +85 °C), with guaranteed operation across full industrial temperature range.

Key Specifications

Pinout & Package

XSON8 package (SOT833-1): plastic extremely thin small outline, no leads, 8-terminal surface-mount, body dimensions 1.0 mm × 1.95 mm × 0.5 mm, thermal padless, pin 1 index located at lower-left corner below marking "Y38".

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC2G38DCUR and 74AUP2G38GT,115, the 74LVC2G38GT,115 uniquely balances 5 V input tolerance, IOFF protection, and XSON8 space efficiency-making it the sole option for compact, mixed-voltage, hot-swap-capable industrial modules.

Availability

74LVC2G38GT,115 is available at Aetrix Electronics and suitable for industrial sensor interfaces, I²C bus expansion, hot-swappable module control, and legacy system voltage translation requiring stable component supply across extended temperature ranges.

Supply support for 74LVC2G38GT,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 delivering high-performance logic, discrete, and MOSFET solutions optimized for efficiency, reliability, and miniaturization in industrial and consumer applications.

The 74LVC2G38GT,115 belongs to Nexperia's LVC logic family, engineered for robust mixed-voltage interoperability and partial power-down resilience in space-constrained, thermally demanding embedded systems.

FAQ

Can 74LVC2G38GT,115 be used as a level shifter between 1.8 V and 5 V logic?

Yes - its inputs tolerate up to 5.5 V regardless of VCC, and it operates down to 1.65 V. When VCC = 1.8 V, VIH is 0.65×VCC ≈ 1.17 V, ensuring reliable recognition of 1.8 V logic highs; 5 V inputs remain safe due to internal clamping. Output high level is determined by external pull-up voltage, not VCC.

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

Yes - IOFF activates when VCC = 0 V (±0.5 V), disabling both outputs and limiting leakage to ±2 μA maximum. This protects upstream circuits even if GND remains tied, preventing back-current flow through the outputs during partial power-down or hot-swap events.

What is the maximum capacitive load the open-drain outputs can drive at 3.3 V supply?

At VCC = 3.3 V, the output can sink 24 mA with VOL ≤ 0.55 V (per datasheet Table 7). Using Ohm's Law, this supports ≤23 Ω dynamic impedance - corresponding to ~30 pF load at 10 MHz (based on tPLZ/tPZL test conditions). For heavier loads, reduce frequency or add buffer stages.

Is the Schmitt-trigger hysteresis adjustable or fixed?

Fixed - hysteresis is inherent to the input structure and varies with VCC: typ. 0.3 V at VCC = 3.3 V, increasing to ~0.8 V at VCC = 5.5 V. No external components or configuration pins modify this behavior; it is factory-trimmed and guaranteed across temperature.