SN74AUC2G34 - Dual Buffer Gate 0.8-2.7V | Texas Instruments
MPN: SN74AUC2G34 ✓ Active| 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 |
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:
SN74AUC2G34DBVR
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SN74AUC2G34DCKR
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SN74AUC2G34YFPR
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74AUC2G34
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SN74LVC2G34DCKR
⚡ Same Package✓ In Stock
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View Datasheet →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 | 1.8 V |
| I/O Tolerance | 3.6 V |
| Propagation Delay (tpd) | 1.8 ns at 1.8 V |
| Output Drive | ±8 mA |
| Ioff Support | Yes |
| Sub-1-V Operation | Yes |
| Package Options | SOT-23-6 (DBV), SOT-5X3 (DRL), NanoStar™/NanoFree™ |
| Operating Temperature Range | -40°C to +85°C |
| RoHS Status | Compliant |
| Logic Function | Buffer, Non-Inverting |
| Mounting Type | Surface Mount |
| Number of Pins | 6 (SOT-23-6) |
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 Interfaces, Clock Distribution, Bus Isolation, Industrial Control, IoT Devices.
Portable Electronics
The SN74AUC2G34 is ideal for portable electronics like smartphones and tablets due to its ultra-low supply voltage (0.8-2.7V) and small package options. It buffers signals in power management, sensor interfaces, and logic control paths. Its low power consumption extends battery life, and the 3.6-V I/O tolerance allows interfacing with higher-voltage peripherals without level shifters. The SOT-23-6 package fits space-constrained PCBs, making it a preferred choice for compact designs.
Recommended
Level-Shifting Interfaces
The SN74AUC2G34 can be used in level-shifting interfaces to translate signals from a low-voltage core (e.g., 1.8V) to higher-voltage peripherals (up to 3.6V). Its 3.6-V I/O tolerance allows direct connection to 3.3V logic without damage. The buffer provides signal regeneration and isolation, ensuring clean transitions. This is common in mixed-voltage systems where a microcontroller at 1.8V communicates with sensors or memory at 3.3V. The device's high-speed performance (1.8ns tpd) minimizes skew in timing-critical paths.
Recommended
Clock Distribution
The SN74AUC2G34 is suitable for clock distribution in low-voltage digital systems. Its low propagation delay (1.8ns at 1.8V) ensures minimal skew between clock branches. The buffer can drive multiple loads, maintaining signal integrity. It is often used to fan out clock signals to multiple ICs in FPGAs, microcontrollers, or memory interfaces. The device's low power consumption is beneficial in battery-powered applications where clock distribution is continuous. The small package allows placement near the clock source to minimize trace length.
Recommended
Bus Isolation
The SN74AUC2G34 can be used for bus isolation in multi-board or multi-module systems. By placing buffers between bus segments, it prevents loading and signal degradation. The Ioff feature allows partial power-down, isolating a powered-down section from the active bus. This is critical in hot-swap or power management scenarios. The device's 3.6-V I/O tolerance ensures compatibility with various bus voltage levels. Its high-speed operation supports fast data rates, making it suitable for SPI, I2C, or UART buses.
Recommended
Industrial Control
In industrial control systems, the SN74AUC2G34 is used for signal conditioning and buffering in low-voltage control logic. It operates from 0.8V to 2.7V, which is common in modern industrial sensors and controllers. The device's robustness and wide temperature range (-40°C to +85°C) make it suitable for harsh environments. It can buffer signals from sensors to PLCs or microcontrollers, ensuring reliable communication. The small package is advantageous in space-limited control panels.
Recommended
IoT Devices
The SN74AUC2G34 is well-suited for IoT devices that require low power and small size. It operates at ultra-low voltages (0.8-2.7V), which is ideal for energy harvesting or coin-cell powered sensors. The buffer can interface between a low-power MCU and various sensors or radios. Its low propagation delay ensures fast response times. The Ioff feature is useful in sleep modes, isolating the buffer when the device is powered down. The SOT-23-6 package is perfect for compact IoT modules.
Recommended
Recommended Products Summary
Engineering reference data for SN74AUC2G34 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | SN74AUC2G34DBVR | SN74AUC2G34DCKR | 74AUC2G34 | SN74LVC2G34DCKR |
|---|---|---|---|---|---|
| Package | SOT-23-6 (DBV) | SOT-23-6 (DBV) | SOT-5X3 (DCK) | SOT-23-6 | SOT-5X3 (DCK) |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | NXP Semiconductors | Texas Instruments |
| Supply Voltage Range | 0.8 V to 2.7 V | 0.8 V to 2.7 V | 0.8 V to 2.7 V | 0.8 V to 2.7 V | 1.65 V to 5.5 V |
| Propagation Delay (tpd) | 1.8 ns at 1.8 V | 1.8 ns at 1.8 V | 1.8 ns at 1.8 V | 1.8 ns at 1.8 V | 3.7 ns at 3.3 V |
| Output Drive | ±8 mA | ±8 mA | ±8 mA | ±8 mA | ±24 mA |
| I/O Tolerance | 3.6 V | 3.6 V | 3.6 V | 3.6 V | 5.5 V |
| Ioff Support | Yes | Yes | Yes | Yes | Yes |
| Logic Family | AUC | AUC | AUC | AUC | LVC |
Key Differentiators
- Ultra-low voltage operation down to 0.8V (vs SN74LVC2G34DCKR)
- Faster propagation delay at 1.8V (vs SN74LVC2G34DCKR)
- Lower power consumption (vs SN74LVC2G34DCKR)
Design Notes
The SN74AUC2G34 operates from 0.8V to 2.7V, so ensure the supply voltage is within this range. Use a low-ESR ceramic capacitor (0.1uF) placed close to the VCC pin to decouple high-frequency noise. For mixed-voltage systems, the 3.6-V I/O tolerance allows direct connection to 3.3V logic, but ensure input signals do not exceed the absolute maximum ratings. Proper decoupling is critical for stable operation at high speeds.
For high-speed signal integrity, keep traces short and avoid vias in the signal path. Place the buffer close to the load to minimize parasitic capacitance. Use a solid ground plane to reduce noise. The SOT-23-6 package has a small footprint, so ensure adequate copper pour for thermal dissipation, especially if driving multiple loads. Follow the layout guidelines in the TI application notes for AUC logic.
Do not exceed the supply voltage range of 2.7V, as this can damage the device. Ensure input signals do not exceed VCC + 0.3V unless the I/O tolerance is used. The Ioff feature only works when VCC is 0V; do not rely on it for partial power-down with VCC at intermediate levels. Also, avoid floating inputs by tying unused inputs to VCC or GND to prevent oscillation and excessive power consumption.
Compliance Information
RoHS compliant per TI datasheet. Not AEC-Q100 qualified. Lead-free per TI's Green policy.
