Overview
The SN74HC244NSR, produced by Texas Instruments, is an octal buffer and line driver integrated circuit. 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 wide voltage range of 2 V to 6 V, making it versatile for various applications. The SN74HC244NSR is organized as two 4-bit buffers and drivers with separate output-enable (OE) inputs, allowing for precise control over data transmission.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage Range (VCC) | 2 | - | 6 | V |
| Input Clamp Current (IIK) | - | - | ±20 | mA |
| Output Clamp Current (IOK) | - | - | ±20 | mA |
| Continuous Output Current (IO) | - | - | ±35 | mA |
| Junction Temperature (TJ) | - | - | 150 | °C |
| Storage Temperature (Tstg) | -65 | - | 150 | °C |
| Output Drive at 5 V (IOH) | -6 | - | - | mA |
| Input Current (II) | - | - | ±1 | µA |
| Power Consumption (ICC) | - | - | 80 | µA |
| Propagation Delay (tpd) at VCC = 4.5 V | - | 29 | - | ns |
Key Features
- Wide operating voltage range of 2 V to 6 V
- High-current outputs drive up to 15 LSTTL loads
- 3-state outputs drive bus lines or buffer memory address registers
- Low power consumption: ICC, 80-µA (maximum)
- Typical propagation delay (tpd) of 11 ns
- ±6-mA output drive at 5 V
- Low input current of 1 µA (maximum)
- Separate output-enable (OE) inputs for each 4-bit buffer
Applications
- Servers
- LED Displays
- Network Switches
- Telecom Infrastructure
- Motor Drivers
- I/O Expanders
Q & A
- What is the operating voltage range of the SN74HC244NSR?
The operating voltage range is 2 V to 6 V.
- How many LSTTL loads can the SN74HC244NSR drive?
The SN74HC244NSR can drive up to 15 LSTTL loads.
- What is the maximum power consumption of the SN74HC244NSR?
The maximum power consumption is 80 µA.
- What is the typical propagation delay of the SN74HC244NSR at 4.5 V?
The typical propagation delay is 29 ns.
- How much output current can the SN74HC244NSR drive at 5 V?
The SN74HC244NSR can drive ±6 mA at 5 V.
- What is the maximum input current of the SN74HC244NSR?
The maximum input current is 1 µA.
- What are the typical applications of the SN74HC244NSR?
Typical applications include servers, LED displays, network switches, telecom infrastructure, motor drivers, and I/O expanders.
- How are the outputs controlled in the SN74HC244NSR?
The outputs are controlled by separate output-enable (OE) inputs for each 4-bit buffer.
- What happens to the outputs when the OE input is high?
When the OE input is high, the outputs are in the high-impedance state.
- What is the package type for the SN74HC244NSR?
The package type for the SN74HC244NSR is SOP (Small Outline Package) with 20 pins.
