Overview
The SN74LVC2G126DCTR, produced by Texas Instruments, is a dual bus buffer gate with 3-state outputs. This device is part of the LVC (Low-Voltage CMOS) family and is designed for 1.65-V to 3.6-V VCC operation. It features output enable control, allowing the outputs to be placed in a high-impedance state when the output-enable input is low. This component is suitable for a wide range of applications requiring high-drive capability and low power consumption.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| VCC Supply Voltage | 1.65 | 5.5 | V | |
| VI Input Voltage | 0 | 5.5 | V | |
| VO Output Voltage (High or Low State) | 0 | VCC + 0.5 | V | |
| IOH High-Level Output Current | -4 | -32 | mA | |
| IOL Low-Level Output Current | 4 | 32 | mA | |
| TA Operating Free-Air Temperature | -40 | 125 | °C | |
| tPD Propagation Delay | 4.3 | ns (at VCC = 3.3 V) |
Key Features
- Available in Texas Instruments NanoFree™ package
- Supports 5-V VCC operation
- Inputs accept voltages up to 5.5 V
- Ioff feature to prevent leakage when VCC is 0 V
- High-drive capability: up to 24 mA at 3.3 V
- Low power consumption: ICC max 10 µA
- 3-state output capability
- ESD protection exceeds JESD 22 (2000-V Human-Body Model, 1000-V Charged-Device Model)
Applications
The SN74LVC2G126 is versatile and can be used in various applications, including:
- Motor controls and high-voltage power line communication modems
- Solid-state drives (SSDs): internal or external
- Video broadcasting and infrastructure: scalable platforms and IP-based multi-format transcoders
- Video communication systems
- LED driver applications and logic buffer functions in microcontrollers or logic circuits
Q & A
- What is the operating voltage range of the SN74LVC2G126?
The SN74LVC2G126 operates within a voltage range of 1.65 V to 5.5 V. - What is the maximum output current of the SN74LVC2G126?
The maximum output current is ±50 mA per output and ±100 mA total for the part. - Does the SN74LVC2G126 have ESD protection?
Yes, it exceeds JESD 22 standards with 2000-V Human-Body Model and 1000-V Charged-Device Model. - What is the propagation delay of the SN74LVC2G126 at 3.3 V?
The typical propagation delay is around 4.3 ns at VCC = 3.3 V. - Can the SN74LVC2G126 be used in high-speed applications?
Yes, it is suitable for high-speed applications up to 100 MHz. - How does the Ioff feature work in the SN74LVC2G126?
The Ioff feature disables the outputs and prevents damaging current backflow through the device when it is powered down. - What are the package options for the SN74LVC2G126?
The device is available in SM8 (DCT), VSSOP (DCU), and DSBGA (YZP) packages. - What is the thermal resistance of the SN74LVC2G126 in different packages?
The junction-to-ambient thermal resistance varies by package: 220 °C/W for SM8, 227 °C/W for VSSOP, and 102 °C/W for DSBGA. - Can the inputs of the SN74LVC2G126 handle voltages higher than VCC?
Yes, the inputs are 5.5-V tolerant, allowing them to handle voltages up to 5.5 V. - How should unused inputs be handled to ensure proper device operation?
Unused inputs must be held at VCC or GND to ensure proper device operation.
