Nexperia USA Inc. 74LVC3G34GT,115

Overview

74LVC3G34GT,115 from Nexperia is a triple non-inverting buffer IC with Schmitt-trigger inputs, designed for level translation between 3.3 V and 5 V logic domains in mixed-voltage systems. It features IOFF partial power-down protection, ±24 mA output drive at 3.0 V, wide 1.65 V to 5.5 V supply range, and operates from −40 °C to +125 °C in the XSON8 (SOT833-1) package. Used in interface buffering for industrial I/O modules and portable device baseband logic.

For engineers reviewing the 74LVC3G34GT,115 datasheet, 74LVC3G34GT,115 pinout, 74LVC3G34GT,115 application, or 74LVC3G34GT,115 equivalent, this page delivers verified functional role, real-world timing behavior, terminal-level design meaning, and validated alternative options for voltage-tolerant digital signal conditioning.

Technical Context

This device implements three independent CMOS buffer gates with Schmitt-trigger inputs-each providing hysteresis (typ. 0.3 V at VCC = 3.3 V) to tolerate slow-rising signals and reject noise on control lines. The IOFF circuit actively disables outputs when VCC = 0 V, blocking backflow current during hot-swap or partial power-down sequences.

All inputs tolerate up to 5.5 V regardless of VCC, enabling direct connection to 5 V sources while powered from 1.65–3.3 V rails. Propagation delay ranges from 0.5 ns (min) to 5.1 ns (max) across VCC = 3.0–3.6 V, with 14 pF typical power dissipation capacitance supporting low dynamic power in high-frequency enable/strobe paths.

Key Specifications

Pinout & Package

XSON8 plastic extremely thin small outline package (SOT833-1), no leads, 8 terminals, body size 1.0 × 1.95 × 0.5 mm, thermal pad not present, pin 1 index located on lower-left corner below marking code "Y34".

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar triple buffer applications.

Compared with 74LVC3G34GT,115, the DCUR variant trades miniaturization for serviceability and thermal margin, while the GN variant maximizes space savings at the cost of soldering yield and thermal derating headroom-both retain identical logic function and voltage tolerance.

Availability

74LVC3G34GT,115 is available at Aetrix Electronics and suitable for industrial sensor interfaces, portable device power sequencing, automotive body control modules, and test equipment digital pattern generators requiring stable component supply across extended temperature ranges.

Supply support for 74LVC3G34GT,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 74LVC3G34 belongs to Nexperia's LVC logic family-designed specifically for low-voltage, high-noise-immunity digital interfacing in space-constrained, thermally demanding applications where reliability across voltage domains is critical.

FAQ

Can 74LVC3G34GT,115 operate with VCC = 1.65 V while receiving 5 V inputs?

Yes. Inputs tolerate up to 5.5 V regardless of VCC level, per Table 5 limiting values and Section 1 general description. At VCC = 1.65 V, VIH is 0.65×VCC (1.07 V) and VIL is 0.35×VCC (0.58 V), so a 5 V input is safely clamped and recognized as HIGH without damage or logic error.

Does the IOFF feature activate during brownout conditions?

No. IOFF activates only when VCC = 0 V, as specified in Section 1 and Table 7. During brownout (e.g., VCC dropping to 0.8 V), the device remains functional but output drive weakens; IOFF does not engage until full power removal, so external power sequencing control is still required.

What is the maximum capacitive load this buffer can drive at 100 MHz?

Based on CPD = 14 pF and dynamic power formula PD = CPD × VCC² × fi × N, at VCC = 3.3 V and fi = 100 MHz, total dynamic power is ~1.5 mW per switching input. With 2.5 pF input capacitance and typical trace impedance, it reliably drives ≤15 pF loads at 100 MHz without overshoot exceeding 10%.

Is the XSON8 package (SOT833-1) lead-free and RoHS compliant?

Yes. Per Nexperia's product compliance documentation, SOT833-1 packages are manufactured with lead-free terminations and fully comply with EU RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006, with homogeneous material declarations available upon request.