Overview
The SN74HC244DWR is a digital integrated circuit produced by Texas Instruments, designed as an octal buffer and line driver with 3-state outputs. This device is part of the 74HC series, known for its high-performance and low-power consumption. It is organized as two 4-bit buffers and drivers with separate output-enable (OE) inputs, making it versatile for various bus interface and memory address driver applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage Range | 2 V to 6 V | V |
| Operating Temperature Range | -40°C to 85°C | °C |
| Output Drive Capability | ±6 mA at VCC = 5 V | mA |
| Input Current | 1 µA (Maximum) | µA |
| Propagation Delay Time (tpd) | 11 ns (Typical) | ns |
| Package Type | SOIC20 | |
| Mounting Type | SMD | |
| Junction Temperature | 150 °C | °C |
| Continuous Output Current | ±35 mA | mA |
Key Features
- Wide operating voltage range of 2 V to 6 V
- High-current outputs capable of driving up to 15 LSTTL loads
- 3-state outputs for driving bus lines or buffering memory address registers
- Low power consumption with ICC of 80 µA (Maximum)
- Low input current of 1 µA (Maximum)
- CMOS technology with balanced output drive
- Separate output-enable (OE) inputs for each 4-bit buffer
Applications
- Servers
- LED Displays
- Network Switches
- Telecom Infrastructure
- Motor Drivers
- I/O Expanders
- Bus interface and memory address driver applications
Q & A
- What is the operating voltage range of the SN74HC244DWR?
The operating voltage range is 2 V to 6 V. - What is the maximum output current of the SN74HC244DWR?
The maximum continuous output current is ±35 mA. - What is the typical propagation delay time of the SN74HC244DWR?
The typical propagation delay time (tpd) is 11 ns. - What type of package does the SN74HC244DWR come in?
The SN74HC244DWR comes in a SOIC20 package. - What is the operating temperature range of the SN74HC244DWR?
The operating temperature range is -40°C to 85°C. - How many bits does each buffer in the SN74HC244DWR have?
Each buffer has 4 bits. - What is the purpose of the output-enable (OE) input?
The output-enable (OE) input controls whether the outputs are in the high-impedance state or passing data from the inputs. - What technology is used in the SN74HC244DWR?
The device uses CMOS technology. - What are some common applications of the SN74HC244DWR?
Common applications include servers, LED displays, network switches, telecom infrastructure, motor drivers, and I/O expanders. - How should the OE input be handled during power-up or power-down?
The OE input should be tied to VCC through a pull-up resistor to ensure the high-impedance state during power-up or power-down.
