Texas Instruments SN74LVC1G34DCKRG4

Overview

SN74LVC1G34 from Texas Instruments is a single non-inverting CMOS buffer gate designed for 1.65V to 5.5V V_CC operation, delivering ±24mA output drive at 3.3V, 3.5ns max propagation delay (t_pd) at 3.3V/CL=15pF, and I_off support for live insertion and partial power-down. It serves as a level-translating signal buffer in compact portable audio and embedded interface paths.

For engineers reviewing the SN74LVC1G34 datasheet, SN74LVC1G34 pinout, SN74LVC1G34 application, or SN74LVC1G34 equivalent, key selection criteria include its 5-pin SC70 (DCK) package footprint, rail-to-rail input tolerance up to 5.5V, down-translation capability to V_CC, ultra-low 1μA max I_CC, and guaranteed operation across –40°C to 125°C for automotive-adjacent industrial designs.

Technical Context

This device implements the Boolean function Y = A in positive logic with no inversion. Its CMOS architecture enables high-output drive while maintaining low static power dissipation across the full 1.65V–5.5V supply range. Input voltage tolerance extends to 5.5V regardless of V_CC, enabling robust interfacing between mixed-voltage domains.

The I_off feature actively disables outputs during power-down, preventing back-drive current and supporting hot-plug scenarios. ESD protection exceeds JESD22 standards: 2kV HBM, 200V MM, and 1kV CDM - critical for handheld and docked consumer electronics where transient exposure is frequent.

Key Specifications

Pinout & Package

The SN74LVC1G34DCKRG4 uses the SC70-5 (DCK) package: 2.00mm × 2.10mm body size, 5-pin surface-mount, JEDEC MO-203AC compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74LVC1G17GW and NC7SZ17P5X, the SN74LVC1G34DCKRG4 provides superior output drive and tighter propagation delay control - critical for driving capacitive loads in audio docks and SSD power sequencing where signal fidelity and timing predictability directly impact system reliability.

Availability

SN74LVC1G34DCKRG4 is available at Aetrix Electronics and suitable for portable audio docks, solid-state drive (SSD) power management, embedded PC thermal control, and HDMI hot-plug detection requiring stable component supply and long-term industrial lifecycle support.

Supply support for SN74LVC1G34DCKRG4 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

Texas Instruments is a U.S.-based semiconductor company specializing in analog and embedded processing technologies, with leadership in precision logic, power management, and signal chain solutions.

The SN74LVC1G34 belongs to TI's LVC (Low-Voltage CMOS) logic family, engineered for low-power, high-speed buffering and level translation in space- and energy-constrained portable and industrial electronics.

FAQ

What is the maximum operating temperature for SN74LVC1G34DCKRG4?

The SN74LVC1G34DCKRG4 in the SC70-5 (DCK) package is rated for operation from –40°C to 125°C under recommended conditions. This extended temperature range is validated per TI's characterization data and supports deployment in industrial control modules and telecom power supplies where ambient temperatures exceed commercial limits. Thermal derating is not required within this range when PCB layout follows TI's recommended copper pour and decoupling guidelines.

Does SN74LVC1G34DCKRG4 support 5V logic inputs when powered from 1.8V?

Yes, SN74LVC1G34DCKRG4 supports 5V-tolerant inputs up to 5.5V regardless of V_CC level - including when V_CC = 1.8V. This down-translation capability is inherent to its input structure and enables direct interfacing between legacy 5V peripherals and modern low-voltage microcontrollers without external resistors or translators. The input threshold remains referenced to V_CC, ensuring correct logic interpretation.

Can SN74LVC1G34DCKRG4 drive an LED directly?

Yes, SN74LVC1G34DCKRG4 can drive an LED directly with up to 24mA sink/source capability at 3.3V, making it suitable for status indicators in portable audio docks and SSD enclosures. For a typical 2V, 20mA LED, a series resistor of ~50Ω is required when V_CC = 3.3V. Ensure total output current remains within Absolute Maximum Ratings (±50mA per pin) and that thermal limits are observed under continuous DC drive.

What is the purpose of Pin 1 (N.C.) on SN74LVC1G34DCKRG4?

Pin 1 of SN74LVC1G34DCKRG4 is a no-connect (N.C.) terminal with no internal bond wire or silicon connection. TI's mechanical drawings confirm it is electrically isolated. It may be left floating, tied to GND for mechanical stability, or omitted from solder paste stencil - but must never be connected to V_CC or driven, as it has no functional role in signal path or power integrity.

How does I_off functionality benefit system design with SN74LVC1G34DCKRG4?

I_off in SN74LVC1G34DCKRG4 disables output drivers when V_CC = 0V, limiting I_off current to ±10μA. This prevents damaging back-current flow from live signal lines into a powered-down subsystem - a critical requirement in modular docking stations, hot-swappable SSD carriers, and multi-rail embedded PCs where partial power-down is routine. It eliminates need for external isolation switches or diodes.