Overview
The SN74HCT244PWRG4 is an octal buffer and line driver produced by Texas Instruments. This device is designed to enhance the performance and density of 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters. It is organized as two 4-bit buffers or drivers with separate output-enable (OE) inputs, allowing for flexible control over the output states.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| Operating Voltage Range | 4.5 | 5 | 5.5 | V |
| High-Level Input Voltage | 2 | V | ||
| Low-Level Input Voltage | 0.8 | V | ||
| Output Drive Current | -6 | 6 | mA | |
| Propagation Delay (tpd) | 13 | 25 | 38 | ns |
| Input Current | 1 | 1000 | nA | |
| Supply Current (ICC) | 80 | 160 | µA | |
| Operating Temperature Range | -40 | 85 | °C | |
| Storage Temperature Range | -65 | 150 | °C |
Key Features
- Operating voltage range of 4.5 V to 5.5 V
- High-current outputs drive up to 15 LSTTL loads
- Low power consumption: 80-µA maximum ICC
- Typical propagation delay of 13 ns
- ±6-mA output drive at 5 V
- Low input current of 1 µA maximum
- Inputs are TTL-voltage compatible
- 3-state outputs drive bus lines and buffer memory address registers
Applications
- Servers
- LED displays
- Network switches
- Telecom infrastructure
- Motor drivers
- I/O expanders
Q & A
- What is the operating voltage range of the SN74HCT244PWRG4? The operating voltage range is 4.5 V to 5.5 V.
- How many LSTTL loads can the SN74HCT244PWRG4 drive? It can drive up to 15 LSTTL loads.
- What is the typical propagation delay of the SN74HCT244PWRG4? The typical propagation delay is 13 ns.
- What is the maximum output drive current at 5 V? The maximum output drive current at 5 V is ±6 mA.
- What is the input current maximum for the SN74HCT244PWRG4? The input current maximum is 1 µA.
- Are the inputs TTL-voltage compatible? Yes, the inputs are TTL-voltage compatible.
- What is the purpose of the 3-state outputs? The 3-state outputs drive bus lines and buffer memory address registers.
- What are some common applications of the SN74HCT244PWRG4? Common applications include servers, LED displays, network switches, telecom infrastructure, motor drivers, and I/O expanders.
- What is the recommended operating temperature range for the SN74HCT244PWRG4? The recommended operating temperature range is -40°C to 85°C.
- How many bits does the SN74HCT244PWRG4 buffer or drive? The device is organized as two 4-bit buffers or drivers.
