Overview
The SN74ABT126PWR, produced by Texas Instruments, is a quadruple bus buffer gate with 3-state outputs. This device features independent line drivers, each with a 3-state output that can be disabled by an associated output-enable (OE) input. The SN74ABT126PWR is designed to operate within a wide range of supply voltages and temperatures, making it versatile for various digital circuit applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage Range (VCC) | 4.5 | 5.5 | V | |
| High-Level Input Voltage (VIH) | 2 | 2 | V | |
| Low-Level Input Voltage (VIL) | 0.8 | 0.8 | V | |
| High-Level Output Current (IOH) | -24 | -32 | mA | |
| Low-Level Output Current (IOL) | 48 | 64 | mA | |
| Operating Free-Air Temperature (TA) | -40 | 85 | °C | |
| Propagation Delay Time (tPLH, tPHL) | 1 | 2.9, 2.5 | 4.9, 5.1 | ns |
| Output Enable Time (tPZH) | 1 | 4.4 | 5.8 | ns |
Key Features
- Independent line drivers with 3-state outputs.
- Each output can be disabled by an associated output-enable (OE) input.
- High-impedance state during power-up or power-down when VCC is between 0 and 2.1 V.
- Ensures high-impedance state above 2.1 V by tying OE to GND through a pulldown resistor.
- Wide range of package options including PDIP, SOIC, SOP, SSOP, TSSOP, and VQFN.
- Operating temperature range from -40°C to 85°C.
Applications
- Digital bus systems requiring buffering and isolation.
- Memory and peripheral interfaces.
- Data transmission and reception circuits.
- General-purpose logic circuits needing 3-state outputs.
- Systems requiring low power consumption and high-speed data transfer.
Q & A
- What is the primary function of the SN74ABT126PWR?
The primary function is to act as a quadruple bus buffer gate with 3-state outputs, enabling independent line drivers to buffer and isolate digital signals.
- How do you disable the outputs of the SN74ABT126PWR?
The outputs can be disabled by setting the associated output-enable (OE) input to a low state.
- What is the operating temperature range of the SN74ABT126PWR?
The operating temperature range is from -40°C to 85°C.
- What are the different package options available for the SN74ABT126PWR?
The device is available in PDIP, SOIC, SOP, SSOP, TSSOP, and VQFN packages.
- How do you ensure the high-impedance state above 2.1 V during power-up or power-down?
Tie the OE input to GND through a pulldown resistor to ensure the high-impedance state above 2.1 V.
- What are the typical propagation delay times for the SN74ABT126PWR?
The typical propagation delay times (tPLH, tPHL) are around 2.9 ns and 2.5 ns respectively.
- What is the maximum low-level output current (IOL) of the SN74ABT126PWR?
The maximum low-level output current (IOL) is 64 mA.
- What is the recommended power-up ramp rate for the SN74ABT126PWR?
The recommended power-up ramp rate is 200 μs/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.
- What are some common applications of the SN74ABT126PWR?
Common applications include digital bus systems, memory and peripheral interfaces, data transmission and reception circuits, and general-purpose logic circuits.
