Texas Instruments SN74AUP2G34DCKR

Overview

SN74AUP2G34DCKR from Texas Instruments is a dual non-inverting buffer gate in SC-70 (DCK) package, optimized for 0.8 V to 3.6 V operation with ultra-low static current (ICC ≤ 0.9 mA), 3.3-V I/O tolerance, and 4.3 ns max propagation delay at 3.3 V. It supports partial-power-down via Ioff and is used in point-to-point signal buffering in portable battery-powered systems.

For engineers reviewing the SN74AUP2G34DCKR datasheet, SN74AUP2G34DCKR pinout, SN74AUP2G34DCKR application, or SN74AUP2G34DCKR equivalent, key selection criteria include wide VCC range (0.8–3.6 V), low dynamic power (Cpd = 4.3 pF typ), input capacitance (Ci = 1.5 pF typ), latch-up immunity (>100 mA), and ESD robustness (2000-V HBM).

Technical Context

The SN74AUP2G34DCKR implements two independent positive-logic buffers (Y = A) with rail-to-rail output swing and full Ioff support for backflow prevention during partial power-down. Its AUP logic family delivers consistent timing across 0.8–3.6 V supply, enabling mixed-voltage interface bridging without level shifters.

It features low noise (<10% VCC overshoot/undershoot), high noise immunity (VIH/VIL thresholds scale with VCC), and operates reliably from –40°C to +85°C. The device meets JESD 78 Class II latch-up and JESD 22 A114-B (2000-V HBM) / C101 (1000-V CDM) ESD standards.

Key Specifications

Pinout & Package

SN74AUP2G34DCKR uses the SC-70 (DCK) 6-pin surface-mount package (2.15 mm × 1.85 mm × 1.1 mm max height), with pin 1 located in quadrant Q3 per tape-and-reel orientation. The package is RoHS-compliant, NIPDAU-finished, and rated MSL Level-1 (260°C peak reflow).

Key Features

Applications

Equivalent & Alternatives

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

Compared with SN74LVC2G34DCKR and 74AHC1G125SE-7, the SN74AUP2G34DCKR uniquely combines dual-channel buffering, Ioff-enabled power sequencing, and sub-1-µA static current across 0.8–3.6 V - making it optimal for energy-constrained, multi-rail embedded systems where reliability and footprint matter.

Availability

SN74AUP2G34DCKR is available at Aetrix Electronics and suitable for portable medical devices, battery-powered IoT sensors, and industrial control modules requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.

Supply support for SN74AUP2G34DCKR 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 global semiconductor leader specializing in analog, embedded processing, and connectivity technologies, with decades of experience in low-power logic innovation.

The AUP logic family - including SN74AUP2G34DCKR - was designed specifically for ultra-low-power portable electronics, delivering industry-leading static/dynamic power efficiency while maintaining robust signal integrity and mixed-voltage interoperability.

FAQ

What is the maximum operating temperature range for SN74AUP2G34DCKR?

The SN74AUP2G34DCKR is fully specified for operation from –40°C to +85°C ambient temperature. All electrical characteristics - including propagation delay, output drive strength, and input threshold voltages - are guaranteed across this full industrial temperature range, making SN74AUP2G34DCKR suitable for deployment in harsh environments such as factory floors and outdoor sensor enclosures.

Does SN74AUP2G34DCKR support true 3.3-V I/O tolerance when VCC is below 3.3 V?

Yes. SN74AUP2G34DCKR supports 3.6-V I/O tolerance regardless of VCC level - meaning inputs can safely accept up to 3.6 V even when VCC is as low as 0.8 V. This allows SN74AUP2G34DCKR to act as a level translator from higher-voltage peripherals (e.g., 3.3-V sensors) to lower-voltage processors (e.g., 1.2-V cores) without external components.

Can SN74AUP2G34DCKR be used in partial-power-down mode with VCC = 0 V?

Yes. SN74AUP2G34DCKR incorporates Ioff circuitry that actively disables both outputs and blocks current flow when VCC = 0 V. This prevents damaging backflow from live signal lines into unpowered sections of the system - a critical feature for SN74AUP2G34DCKR in battery-backed subsystems and hot-pluggable modules.

What is the typical input capacitance of SN74AUP2G34DCKR, and why does it matter?

The typical input capacitance (Ci) of SN74AUP2G34DCKR is 1.5 pF. This low value minimizes loading on upstream drivers - especially important in high-speed or high-impedance signal paths - preserving edge rates and reducing timing uncertainty. For SN74AUP2G34DCKR, it directly contributes to its ability to maintain 4.3 ns tpd even with 5-pF load capacitance.

Is SN74AUP2G34DCKR pin-compatible with other dual buffer variants in the AUP family?

Yes. SN74AUP2G34DCKR shares identical SC-70 (DCK) pinout and function with other AUP dual buffers like SN74AUP2G07DCKR (open-drain) and SN74AUP2G125DCKR (3-state), enabling drop-in replacement where output topology permits. However, functional differences (e.g., output type) must be verified per application - SN74AUP2G34DCKR is strictly non-inverting push-pull.