Overview
The SN74AC244DWG4 is an octal buffer or line driver produced by Texas Instruments. This device is part of the 74AC series, known for its high-speed and low-power CMOS logic. It is designed to enhance the performance and density of 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters. The SN74AC244DWG4 operates over a wide voltage range from 2V to 6V, making it versatile for various applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| VCC Supply Voltage Range | -0.5 | 7 | V | |
| Input Voltage Range | -0.5 | VCC + 0.5 | V | |
| Output Voltage Range | -0.5 | VCC + 0.5 | V | |
| Operating Free-Air Temperature | -40 | 85 | °C | |
| Propagation Delay Time (tPLH/tPHL) at VCC = 5V | 1.5 | 5 | 7.5 | ns |
| High-Level Output Current (IOH) at VCC = 5.5V | -24 | -24 | mA | |
| Low-Level Output Current (IOL) at VCC = 5.5V | 24 | 24 | mA | |
| Continuous Output Current | ±50 | mA | ||
| Package Type | SOIC (DW) |
Key Features
- Operation over a wide voltage range from 2V to 6V.
- Inputs accept voltages up to 6V.
- Maximum propagation delay time of 7.5ns at VCC = 5V.
- Separate output-enable (OE) inputs for each 4-bit buffer or driver section.
- High-impedance state when OE is high.
- Low power consumption.
Applications
- Servers and network switches.
- LED displays.
- Telecom infrastructure.
- Motor-drive control boards.
- 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters.
Q & A
- What is the operating voltage range of the SN74AC244DWG4? The operating voltage range is from 2V to 6V.
- What is the maximum propagation delay time at VCC = 5V? The maximum propagation delay time is 7.5ns.
- What is the purpose of the output-enable (OE) inputs? The OE inputs control the output state, setting it to high-impedance when high and enabling the output when low.
- What are the typical applications of the SN74AC244DWG4? Typical applications include servers, network switches, LED displays, telecom infrastructure, and motor-drive control boards.
- What is the package type of the SN74AC244DWG4? The package type is SOIC (DW).
- What is the operating free-air temperature range? The operating free-air temperature range is from -40°C to 85°C.
- How many outputs does the SN74AC244DWG4 have? The device has 8 outputs, organized as two 4-bit buffers or drivers.
- What is the maximum continuous output current? The maximum continuous output current is ±50 mA.
- Can the inputs handle voltages higher than VCC? Yes, the inputs can accept voltages up to 6V.
- What is the significance of the high-impedance state? The high-impedance state allows the outputs to be disconnected from the bus, which is useful in bus-oriented systems.
