Overview
The SN54HC244J is an octal buffer and line driver integrated circuit produced by Texas Instruments. It is designed to enhance the performance and density of 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters. The device is organized as two 4-bit buffers and drivers with separate output-enable (OE) inputs. When the OE input is low, the device passes noninverted data from the A inputs to the Y outputs. When the OE input is high, the outputs are in the high-impedance state, which is crucial for managing bus lines and memory address registers effectively.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | CDIP (20 pins) | |
| Operating Temperature Range | -55 to 125 | °C |
| Supply Voltage Range (VCC) | 2 to 6 | V |
| High-Level Input Voltage (VIH) | 1.5 (VCC=2V), 3.15 (VCC=4.5V), 4.2 (VCC=6V) | V |
| Low-Level Input Voltage (VIL) | 0.5 (VCC=2V), 1.35 (VCC=4.5V), 1.8 (VCC=6V) | V |
| Output Drive Current (IOH/IOL) | ±6 mA at VCC=5V | mA |
| Input Current | 1 µA (maximum) | µA |
| Power Consumption (ICC) | 80 µA (maximum) | µA |
| Propagation Delay Time (tpd) | 11 ns (typical) | ns |
| Junction Temperature (TJ) | 150 °C | °C |
| Storage Temperature (Tstg) | -65 to 150 °C | °C |
Key Features
- Wide operating voltage range of 2V to 6V
- 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 time (tpd) of 11 ns
- ±6 mA output drive at 5 V
- Low input current of 1 µA (maximum)
- Compliance with MIL-PRF-38535 for certain parameters
Applications
- Servers
- LED Displays
- Network Switches
- Telecom Infrastructure
- Motor Drivers
- I/O Expanders
Q & A
- What is the primary function of the SN54HC244J?
The SN54HC244J is an octal buffer and line driver designed to improve the performance and density of 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters.
- What is the operating voltage range of the SN54HC244J?
The operating voltage range is from 2V to 6V.
- How many LSTTL loads can the SN54HC244J drive?
The SN54HC244J can drive up to 15 LSTTL loads.
- What is the typical propagation delay time (tpd) of the SN54HC244J?
The typical propagation delay time is 11 ns.
- What is the output drive current of the SN54HC244J at 5V?
The output drive current is ±6 mA at 5V.
- What is the maximum input current of the SN54HC244J?
The maximum input current is 1 µA.
- What is the maximum power consumption (ICC) of the SN54HC244J?
The maximum power consumption is 80 µA.
- What are the typical applications of the SN54HC244J?
Typical applications include servers, LED displays, network switches, telecom infrastructure, motor drivers, and I/O expanders.
- What is the junction temperature range of the SN54HC244J?
The junction temperature range is up to 150 °C.
- What is the storage temperature range of the SN54HC244J?
The storage temperature range is from -65 °C to 150 °C.
