Overview
The SN74HCT244PWR 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. When the OE input is low, the device passes non-inverted data from the A inputs to the Y outputs. When the OE input is high, the outputs are in the high-impedance state.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Voltage Range | 4.5 to 5.5 | V |
| Package Type | TSSOP (PW) | - |
| Pins | 20 | - |
| Operating Temperature Range | -40 to 125 | °C |
| High-Current Outputs | Up to 15 LSTTL loads | - |
| Maximum ICC | 80 µA | - |
| Typical tpd | 13 ns | - |
| Output Drive at 5 V | ±6 mA | - |
| Maximum Input Current | 1 µA | - |
| Input Voltage Compatibility | TTL-voltage compatible | - |
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 (tpd) 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 SN74HCT244PWR?
The operating voltage range is 4.5 V to 5.5 V.
- What type of package does the SN74HCT244PWR come in?
The device comes in a TSSOP (PW) package with 20 pins.
- What is the maximum number of LSTTL loads the SN74HCT244PWR can drive?
The device can drive up to 15 LSTTL loads.
- What is the typical propagation delay (tpd) of the SN74HCT244PWR?
The typical propagation delay is 13 ns.
- What is the output drive capability at 5 V for the SN74HCT244PWR?
The output drive capability is ±6 mA at 5 V.
- Are the inputs of the SN74HCT244PWR TTL-voltage compatible?
Yes, the inputs are TTL-voltage compatible.
- What is the purpose of the 3-state outputs in the SN74HCT244PWR?
The 3-state outputs drive bus lines and buffer memory address registers.
- How do the output-enable (OE) inputs function in the SN74HCT244PWR?
When OE is low, the device passes non-inverted data from the A inputs to the Y outputs. When OE is high, the outputs are in the high-impedance state.
- What are some common applications for the SN74HCT244PWR?
Common applications include servers, LED displays, network switches, telecom infrastructure, motor drivers, and I/O expanders.
- What is the maximum operating temperature range for the SN74HCT244PWR?
The operating temperature range is -40°C to 125°C.
