Overview
The SN74LVC2G34DBVTG4, produced by Texas Instruments, is a dual buffer gate device designed for a wide range of voltage operations from 1.65 V to 5.5 V. This device is part of the LVC (Low-Voltage CMOS) family and is packaged in a SOT-23 (DBV) package. It performs the Boolean function Y = A, making it suitable for various logic and signal buffering applications. The device is fully specified for partial-power-down applications and features Ioff circuitry to prevent damaging current backflow when powered down.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| VCC (Supply Voltage) | 1.65 | 5.5 | V | |
| VI (Input Voltage) | -0.5 | 6.5 | V | |
| VO (Output Voltage in High or Low State) | -0.5 | VCC + 0.5 | V | |
| IOH (Output High Current) | -100 µA | -32 mA | mA | |
| IOL (Output Low Current) | 100 µA | 16 mA | mA | |
| tpd (Propagation Delay Time) | 1.2 | 4.1 | 9.6 | ns |
| TJ (Junction Temperature) | -40 | 125 | °C | |
| Tstg (Storage Temperature) | -65 | 150 | °C |
Key Features
- Operates from 1.65 V to 5.5 V supply voltage.
- Inputs accept voltages up to 5.5 V.
- Maximum propagation delay of 4.1 ns at 3.3 V.
- Low power consumption with a maximum ICC of 10 µA.
- ±24 mA output drive at 3.3 V.
- Ioff circuitry supports live insertion, partial-power-down mode, and back-drive protection.
- Can be used as a down translator to translate inputs from a maximum of 5.5 V down to the VCC level.
- NanoFree™ package technology.
- Typical VOLP (Output Ground Bounce) < 0.8 V at VCC = 3.3 V, TA = 25°C.
- Typical VOHV (Output VOH Undershoot) > 2 V at VCC = 3.3 V, TA = 25°C.
Applications
- High-drive CMOS buffer applications.
- LED driver applications due to its high output drive capability.
- High-speed applications up to 100 MHz.
- Down voltage translation in mixed-voltage systems.
- Partial-power-down applications where Ioff circuitry is beneficial.
Q & A
- What is the operating voltage range of the SN74LVC2G34DBVTG4?
The device operates from 1.65 V to 5.5 V.
- What is the maximum propagation delay at 3.3 V?
The maximum propagation delay at 3.3 V is 4.1 ns.
- What is the output drive capability at 3.3 V?
The device can produce ±24 mA of drive current at 3.3 V.
- Can the inputs handle voltages higher than VCC?
Yes, the inputs are 5.5-V tolerant and can handle voltages up to 5.5 V.
- What is the purpose of the Ioff circuitry?
The Ioff circuitry disables the outputs to prevent damaging current backflow when the device is powered down.
- What are the typical applications of the SN74LVC2G34DBVTG4?
Typical applications include high-drive CMOS buffer, LED driver, high-speed applications, and down voltage translation.
- What is the recommended bypass capacitor for the power supply?
A 0.1-μF capacitor is recommended for each power pin, and it is advisable to install it close to the power pin.
- How should unused inputs be handled?
Unused inputs must be connected to either VCC or GND to prevent floating and ensure proper device operation.
- What is the junction temperature range for the device?
The junction temperature range is from -40°C to 125°C.
- What is the storage temperature range for the device?
The storage temperature range is from -65°C to 150°C.
