Texas Instruments

SN74AUC2G34 - Dual Buffer Gate 0.8-2.7V | Texas Instruments

Name: SN74AUC2G34
Brand: Texas Instruments
Price: 0.14 USD
Availability: InStock

MPN: SN74AUC2G34 ✓ Active

In Stock Ships in 1-3 business days

0.8 V to 2.7 V Vdss ±8 mA Id SOT-23-6, SOT-5X3, NanoStar, NanoFree Package

From $0.14 USD / Unit

MOQ: 1 |

Price updated: 2026-08-25

Volume Pricing

Qty	Unit Price	Extended
1	$0.35	$0.35
10	$0.28	$2.80
100	$0.21	$21.00
500	$0.17	$85.00
1,000	$0.14	$140.00

ℹ️ All prices are in USD

View Datasheet (PDF) View Alternatives

Quantity

Drop-in alternatives for SN74AUC2G34 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.

Quick Comparison Tool — Select alternative parts for side-by-side comparison:

SN74LVC2G34DCKR

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📦 SOT-23-6

74LVC · 2 · Standard CMOS · Push-Pull · 1.65 V to 5.5 V · 5.5 V · 3.3 ns at 3.3 V · ±24 mA at 3.3 V

✓ In Stock

$0.14 / Unit

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SN74AUC2G34DRLR

✅ Drop-In

📦 SOT-5X3

Same die, different package (SOT-5X3 vs SOT-23-6)

📋 Reference alternative (not in catalog)

SN74AUC2G34DCKR

✅ Drop-In

📦 SOT-23-6

Same device, different package suffix

📋 Reference alternative (not in catalog)

74AUC2G34DCKR

✅ Drop-In

📦 SOT-23-6

Cross-brand equivalent, same logic function and package

📋 Reference alternative (not in catalog)

ℹ️ 2 cross-package part(s) hidden — different package requires PCB rework and is not a true drop-in replacement. Contact us if you need cross-package suggestions.

SN74AUC2G34 Maximum Ratings & Electrical Characteristics

Logic Family	AUC
Number of Channels	2
Supply Voltage Range	0.8 V to 2.7 V
Optimized Supply Voltage	1.65 V to 1.95 V
Output Type	Push-Pull
Output Current	±8 mA
Propagation Delay (tpd)	1.8 ns at 1.8 V
I/O Tolerance	3.6 V
Ioff Support	Yes
Operating Temperature Range	-40°C to +85°C
Package Options	SOT-23-6, SOT-5X3, NanoStar, NanoFree
Mounting Type	Surface Mount
RoHS Status	Compliant
Logic Function	Buffer, Non-Inverting
Number of Bits per Element	1

SN74AUC2G34 Pin Configuration

Pin 1	1A — Input of buffer 1
Pin 2	GND — Ground
Pin 3	1Y — Output of buffer 1
Pin 4	2Y — Output of buffer 2
Pin 5	VCC — Power supply
Pin 6	2A — Input of buffer 2

Safe Operating Area (SOA) & Thermal Characteristics

No official SOA curve available for this digital IC. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.

Typical Applications

SN74AUC2G34 is suitable for 6 applications: Portable Electronics, Level Shifting, Clock Distribution, Industrial Control, IoT Devices, Medical Devices.

📱

Portable Electronics

The SN74AUC2G34's ultra-low-voltage operation (0.8V-2.7V) and small package make it ideal for battery-powered devices like smartphones and wearables. It buffers signals between low-voltage processors and peripherals, ensuring signal integrity while minimizing power consumption. The 3.6-V I/O tolerance allows interfacing with higher-voltage sensors without level shifters, simplifying design and reducing component count.

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Level Shifting

With 3.6-V I/O tolerance, the SN74AUC2G34 can shift 3.3-V signals down to 1.8-V logic levels, making it useful in mixed-voltage systems. It provides a simple unidirectional level-shifting solution without external components. The high-speed propagation delay (1.8 ns) ensures minimal signal distortion in high-frequency applications, such as SPI or I2C buses.

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Clock Distribution

The SN74AUC2G34's low propagation delay and high-speed performance make it suitable for clock buffering and distribution in digital systems. It can drive multiple clock loads while maintaining signal integrity. The push-pull output provides clean edges, reducing jitter in timing-critical applications. Its low power consumption is beneficial in power-sensitive designs.

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Industrial Control

In industrial environments, the SN74AUC2G34 can buffer control signals between low-voltage microcontrollers and higher-voltage peripherals. Its 3.6-V I/O tolerance ensures compatibility with 3.3-V sensors and actuators. The device's robust design and wide operating temperature range (-40°C to +85°C) make it suitable for harsh conditions. Its small footprint allows for dense PCB layouts.

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IoT Devices

The SN74AUC2G34 is well-suited for IoT devices that require low power and small size. It can buffer signals from sensors and communication modules, ensuring reliable data transmission. The Ioff feature supports partial-power-down mode, allowing the device to be powered down while other parts of the system remain active, saving energy. Its 0.8-V operation enables compatibility with energy-harvesting power sources.

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CC2652R1FRGZR · Texas Instruments TMP117 · Texas Instruments

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Medical Devices

In medical devices, the SN74AUC2G34 provides reliable signal buffering in low-voltage, battery-powered equipment. Its high-speed performance ensures accurate data acquisition, while the small package is ideal for compact designs. The device's low power consumption extends battery life, critical for portable medical monitors. The 3.6-V I/O tolerance allows interfacing with various sensors and ADCs.

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Recommended Products Summary

What is the operating voltage range of SN74AUC2G34?

The SN74AUC2G34 operates from 0.8 V to 2.7 V, with optimized performance at 1.8 V. According to the TI datasheet, it is designed for 1.65-V to 1.95-V operation, but it is fully functional across the entire 0.8-V to 2.7-V range. This makes it suitable for low-voltage battery-powered applications.

What is the propagation delay of SN74AUC2G34?

The maximum propagation delay (tpd) of the SN74AUC2G34 is 1.8 ns at 1.8 V. This high-speed performance ensures minimal signal delay in critical timing paths, making it ideal for high-frequency digital systems and clock distribution networks.

Is SN74AUC2G34 3.6-V I/O tolerant?

Yes, the SN74AUC2G34 is 3.6-V I/O tolerant, allowing it to interface with higher-voltage logic families without damage. This feature supports mixed-mode signal operation, enabling level shifting between 1.8-V and 3.3-V domains without external components.

What is the difference between SN74AUC2G34 and SN74LVC2G34?

The SN74AUC2G34 operates at 0.8-V to 2.7-V supply, while the SN74LVC2G34 operates at 1.65-V to 5.5-V. The AUC version is optimized for lower voltage and higher speed, with a tpd of 1.8 ns at 1.8 V, whereas the LVC version has a tpd of 3.7 ns at 3.3 V. Choose AUC for ultra-low-voltage applications and LVC for broader voltage compatibility.

Can SN74AUC2G34 be used for level shifting?

Yes, the SN74AUC2G34 can be used for level shifting due to its 3.6-V I/O tolerance. It can accept 3.3-V inputs while operating at 1.8-V supply, effectively shifting signals down to 1.8-V logic levels. However, it is not a bidirectional level shifter; for bidirectional applications, consider TXS0102 or TXB0104.

What is the output drive capability of SN74AUC2G34?

The SN74AUC2G34 can source or sink ±8 mA of output current. This is sufficient to drive multiple CMOS inputs or small capacitive loads, but for heavier loads, a buffer with higher drive strength may be needed.

Does SN74AUC2G34 support partial-power-down mode?

Yes, the SN74AUC2G34 supports partial-power-down mode through its Ioff feature. When the device is powered down, the Ioff circuitry prevents backflow current from the inputs, protecting the device and allowing other parts of the system to remain powered.

What are the package options for SN74AUC2G34?

The SN74AUC2G34 is available in SOT-23-6 (DBV), SOT-5X3 (DRL), and NanoStar™/NanoFree™ packages. The SOT-23-6 is a common 6-pin package, while NanoStar uses the die as the package for minimal footprint. Choose based on board space and assembly requirements.

Where can I buy SN74AUC2G34?

SN74AUC2G34 is available from major distributors such as DigiKey, Mouser, and Texas Instruments directly. As of 2026-08-26, DigiKey lists the SN74AUC2G34DBVR in stock with pricing starting at $0.35 for single units. Check distributor websites for current availability and lead times.

What is the price of SN74AUC2G34?

As of 2026-08-26, the SN74AUC2G34DBVR is priced at approximately $0.35 for 1 unit, $0.28 for 10 units, $0.21 for 100 units, $0.17 for 500 units, and $0.14 for 1000 units at DigiKey. Prices may vary by distributor and quantity.

What is the lead time for SN74AUC2G34?

The lead time for SN74AUC2G34 varies by distributor and order quantity. As of 2026-08-26, DigiKey shows it as 'ships today' for in-stock items, while larger quantities may require additional lead time. Check with your preferred distributor for accurate lead time information.

Is SN74AUC2G34 in stock?

As of 2026-08-26, the SN74AUC2G34DBVR is in stock at DigiKey and Mouser. Availability may change, so it is recommended to check the distributor websites for real-time inventory status.

What is the best drop-in replacement for SN74AUC2G34?

The best drop-in replacement for SN74AUC2G34 is the SN74LVC2G34DCKR, which is pin-compatible and available in the same SOT-23-6 package. However, the LVC version operates at a higher voltage range (1.65-V to 5.5-V) and has a slightly longer propagation delay. For a true AUC replacement, consider the SN74AUC2G34DCKR itself or the SN74AUC2G34DRLR in SOT-5X3.

Can SN74LVC2G34 replace SN74AUC2G34?

Yes, the SN74LVC2G34 can replace SN74AUC2G34 in most applications, as it is pin-compatible and has a wider supply voltage range (1.65-V to 5.5-V). However, the LVC version has a higher propagation delay (3.7 ns at 3.3 V) and higher power consumption, so it may not be suitable for ultra-low-voltage or high-speed designs.

Where can I download the SN74AUC2G34 datasheet PDF?

The SN74AUC2G34 datasheet PDF can be downloaded from the Texas Instruments website at https://www.ti.com/lit/ds/symlink/sn74auc2g34.pdf. It is also available on distributor sites like DigiKey and Mouser, as well as third-party datasheet aggregators like Alldatasheet.

Engineering reference data for SN74AUC2G34 — comparison, design guidance, and compliance information.

Selection Guide

Choose the SN74AUC2G34 when you need a dual buffer gate operating at ultra-low voltages (0.8V-2.7V) with high-speed performance. It is ideal for battery-powered portable devices, level shifting, and clock distribution. If you require a wider supply voltage range (up to 5.5V) and higher output drive, consider the SN74LVC2G34DCKR. For a smaller footprint, the SN74AUC2G34DRLR in SOT-5X3 is an option, but verify PCB layout compatibility. Cross-brand alternatives like the 74AUC2G34 from NXP are pin-compatible but may have different availability and quality standards. Always verify pinout and electrical characteristics before substitution.

Comparison with Alternatives

Parameter	This Product	SN74LVC2G34DCKR	SN74AUC2G34DRLR	74AUC2G34DCKR
Package	SOT-23-6	SOT-23-6	SOT-5X3	SOT-23-6
Brand	Texas Instruments	Texas Instruments	Texas Instruments	NXP Semiconductors
Supply Voltage Range	0.8V to 2.7V	1.65V to 5.5V	0.8V to 2.7V	0.8V to 2.7V
Propagation Delay (tpd)	1.8 ns at 1.8V	3.7 ns at 3.3V	1.8 ns at 1.8V	1.8 ns at 1.8V
Output Current	±8 mA	±24 mA	±8 mA	±8 mA
I/O Tolerance	3.6V	5.5V	3.6V	3.6V
Ioff Support	Yes	Yes	Yes	Yes
Operating Temperature	-40°C to +85°C	-40°C to +85°C	-40°C to +85°C	-40°C to +85°C

Key Differentiators

Ultra-low-voltage operation down to 0.8V (vs SN74LVC2G34DCKR)
Faster propagation delay at 1.8V (vs SN74LVC2G34DCKR)
3.6V I/O tolerance with lower supply (vs 74AUC2G34DCKR (NXP))

Design Notes

Ensure the supply voltage is within the 0.8V to 2.7V range. Use a 0.1uF decoupling capacitor close to the VCC pin to filter high-frequency noise. For optimal performance at 1.8V, maintain a clean power supply with low ripple.

Keep traces short to minimize parasitic inductance and capacitance, especially for high-speed signals. Place the device close to the signal source and load. Use ground planes to reduce noise and improve signal integrity.

Do not exceed the absolute maximum ratings for input voltage (3.6V) and supply voltage (2.7V). When using the device in partial-power-down mode, ensure that Ioff is properly implemented to prevent backflow current. Avoid floating inputs by tying unused inputs to VCC or GND.