Overview
The SN74HCT244NG4, produced by Texas Instruments, is an octal buffer and line driver with 3-state outputs. 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 operates within a voltage range of 4.5 V to 5.5 V, making it compatible with TTL (Transistor-Transistor Logic) voltage levels. The device 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 | Value | Unit |
|---|---|---|
| Operating Voltage Range | 4.5 V to 5.5 V | V |
| Output Current (High/Low) | ±6 mA | mA |
| Input Current (Maximum) | 1 µA | µA |
| Propagation Delay (Typical) | 13 ns | ns |
| Power Consumption (Maximum ICC) | 80 µA | µA |
| Operating Temperature Range | -40°C to 85°C | °C |
| Package Type | 20-DIP (0.300", 7.62mm) | |
| Mounting Type | Through Hole |
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 SN74HCT244NG4?
The operating voltage range is 4.5 V to 5.5 V.
- What is the maximum output current of the SN74HCT244NG4?
The maximum output current is ±6 mA at 5 V.
- What is the typical propagation delay of the SN74HCT244NG4?
The typical propagation delay is 13 ns.
- What is the power consumption of the SN74HCT244NG4?
The maximum power consumption (ICC) is 80 µA.
- What type of inputs does the SN74HCT244NG4 have?
The inputs are TTL-voltage compatible.
- What is the purpose of the output-enable (OE) inputs?
The OE inputs control the output state; when OE is low, the device passes non-inverted data from the A inputs to the Y outputs, and when OE is high, the outputs are in the high-impedance state.
- What are some common applications of the SN74HCT244NG4?
Common applications include servers, LED displays, network switches, telecom infrastructure, motor drivers, and I/O expanders.
- What is the package type of the SN74HCT244NG4?
The package type is 20-DIP (0.300", 7.62mm).
- Is the SN74HCT244NG4 RoHS compliant?
- What is the operating temperature range of the SN74HCT244NG4?
The operating temperature range is -40°C to 85°C.
