Overview
The SN74ACT244, produced by Texas Instruments, is an eight-channel buffer and driver integrated circuit designed to enhance the performance and density of various digital systems. This device operates within a voltage range of 4.5V to 5.5V and features TTL-compatible CMOS inputs along with three-state outputs. It is particularly suited for applications requiring high-drive buffer drivers, such as memory address drivers, clock drivers, and bus-oriented receivers and transmitters.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| VCC Operating Range | 4.5 to 5.5 | V |
| Input Voltage Range | Up to 5.5 | V |
| Maximum Propagation Delay (tpd) at 5V | 9.5 | ns |
| Input Compatibility | TTL-compatible | |
| Output Current Drive per Channel | 24 | mA |
| Operating Temperature Range | -40 to 85 | °C |
| Package Type | TSSOP (PW) | |
| Number of Pins | 20 |
Key Features
- Operates within a voltage range of 4.5V to 5.5V
- Inputs accept voltages up to 5.5V
- Maximum propagation delay of 9.5ns at 5V
- TTL-compatible inputs
- Three-state outputs with separate output-enable (OE) inputs
- High-drive buffer drivers providing 24-mA current drive per channel
- Compliant with MIL-PRF-38535 for certain parameters
Applications
- Memory address drivers
- Clock drivers
- Bus-oriented receivers and transmitters
- LED displays
- Servers and telecommunications
- Switching networks
Q & A
- What is the operating voltage range of the SN74ACT244?
The SN74ACT244 operates within a voltage range of 4.5V to 5.5V.
- What is the maximum propagation delay at 5V for the SN74ACT244?
The maximum propagation delay at 5V is 9.5ns.
- Are the inputs of the SN74ACT244 TTL-compatible?
Yes, the inputs are TTL-compatible.
- What is the output current drive per channel for the SN74ACT244?
The output current drive per channel is 24 mA.
- What is the purpose of the output-enable (OE) inputs on the SN74ACT244?
The output-enable (OE) inputs control the state of the outputs. When OE is low, the device passes non-inverted data from the A inputs to the Y outputs. When OE is high, the outputs are in the high-impedance state.
- What are some common applications for the SN74ACT244?
Common applications include memory address drivers, clock drivers, bus-oriented receivers and transmitters, LED displays, servers and telecommunications, and switching networks.
- What is the package type and number of pins for the SN74ACT244PWRE4?
The package type is TSSOP (PW) with 20 pins.
- What is the operating temperature range for the SN74ACT244?
The operating temperature range is -40°C to 85°C.
- Does the SN74ACT244 comply with any military standards?
Yes, certain parameters of the SN74ACT244 are compliant with MIL-PRF-38535.
- How do I ensure the outputs are in a high-impedance state during power-up or power-down?
The output-enable (OE) inputs should be tied to VCC through a pull-up resistor to ensure the outputs are in the high-impedance state during power-up or power-down.
