Overview
The SN74ABT244APW is an octal buffer/driver with 3-state outputs, manufactured by Texas Instruments. This device is part of the 74ABT series and is designed to enhance the performance and density of 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters. It features two 4-bit buffers/line drivers with separate output-enable (OE) inputs, allowing for noninverted data transfer from the A inputs to the Y outputs when OE is low, and high-impedance state when OE is high. This component is particularly useful in applications requiring high-drive outputs and low power dissipation.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Part Number | SN74ABT244APW |
| Series | 74ABT |
| Logic Type | Buffer, Non-Inverting |
| Output Type | 3-State |
| Package / Case | 20-TSSOP (0.173", 4.40mm Width) |
| Voltage - Supply | 4.5V ~ 5.5V |
| Number of Elements | 2 |
| Number of Bits per Element | 4 |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Output Drive (IOL/IOH)(Max) | -32mA / 64mA |
| Propagation Delay (tPLH/tPHL) | 1 ~ 4.6 ns |
| RoHS | Compliant |
Key Features
- State-of-the-Art EPIC-IIB BiCMOS Design significantly reduces power dissipation.
- Latch-Up Performance exceeds 500 mA per JEDEC Standard JESD-17.
- ESD Protection exceeds 2000 V per MIL-STD-883, Method 3015; exceeds 200 V using Machine Model (C = 200 pF, R = 0).
- Typical VOLP (Output Ground Bounce) < 1 V at VCC = 5 V, TA = 25°C.
- High-Drive Outputs (-32-mA IOH, 64-mA IOL).
- Separate output-enable (OE) inputs for each 4-bit buffer/line driver.
- High-impedance state during power up or power down when OE is tied to VCC through a pullup resistor.
Applications
The SN74ABT244APW is designed for various applications including:
- 3-state memory address drivers
- Clock drivers
- Bus-oriented receivers and transmitters
- High-performance digital systems requiring low power dissipation and high-drive outputs
Q & A
- What is the primary function of the SN74ABT244APW?
The SN74ABT244APW is an octal buffer/driver with 3-state outputs, designed to improve the performance and density of digital systems.
- What is the operating voltage range of the SN74ABT244APW?
The operating voltage range is 4.5V to 5.5V.
- What is the maximum output drive current of the SN74ABT244APW?
The maximum output drive current is -32mA for high-level output and 64mA for low-level output.
- What is the operating temperature range of the SN74ABT244APW?
The operating temperature range is -40°C to 85°C.
- Is the SN74ABT244APW RoHS compliant?
- What type of package does the SN74ABT244APW come in?
The SN74ABT244APW comes in a 20-TSSOP (Thin Shrink Small-Outline) package.
- How many bits per element does the SN74ABT244APW have?
The SN74ABT244APW has 4 bits per element.
- What is the propagation delay of the SN74ABT244APW?
The propagation delay (tPLH/tPHL) is between 1 ns and 4.6 ns.
- Does the SN74ABT244APW have ESD protection?
- How should the output-enable (OE) input be managed during power up or power down?
The OE input should be tied to VCC through a pullup resistor to ensure the high-impedance state.
