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| Product attributes | Property Value |
| Manufacturer | onsemi |
| Product Series | 74HC |
| Packaging | Bulk | |
| Part Status | Active |
| Logic Type | Buffer, Non-Inverting |
| Number of Elements | 2 |
| Number of Bits per Element | 4 |
| Input Type | - |
| Output Type | 3-State |
| Current - Output High, Low | 7.8mA, 7.8mA |
| Voltage - Supply | 2V ~ 6V |
| Operating Temperature | -55°C ~ 125°C (TA) |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | 20-SOIC (0.209", 5.30mm Width) |
| Supplier Device Package | 20-SOIC |
| ROHS |  |
The MC74HC244AFR2 from onsemi is a dual non-inverting buffer from the high-speed CMOS 74HC family. It features two independent channels with 3-State outputs, allowing for efficient bus-oriented applications. Operating across a wide 2V to 6V supply range, it provides a maximum output current of 7.8mA per channel. This buffer is well-suited for memory address driving, signal buffering, and general-purpose logic interfacing in both commercial and industrial environments.
- Wide 2V to 6V Supply Range: Ensures compatibility with both 3.3V and 5V systems, simplifying mixed-voltage designs.
- 3-State Outputs: Allows multiple devices to share a common bus without contention, enhancing system flexibility.
- High Output Current (7.8mA): Provides sufficient drive for LEDs and other low-power loads without additional components.
- Extended Temperature Range (-55°C to 125°C): Suitable for harsh automotive and industrial environments.
Bus Line Driving
The 3-State outputs and high current drive (7.8mA) make it ideal for driving bus lines in microprocessor systems, preventing data corruption when multiple devices share the same bus.
Memory Address Buffering
In systems with multiple memory banks, the MC74HC244AFR2 can buffer address lines, ensuring signal integrity and reducing capacitive loading on the memory controller.
Signal Buffering for Peripherals
Use it to buffer control signals (e.g., read/write strobes) to peripherals, providing a clean, high-current drive to external devices.
Level Shifting (5V to 3.3V)
With a 6V maximum supply, it can accept 5V logic inputs and, when powered at 3.3V, shift the output to 3.3V levels, enabling interfacing between different logic families.
Industrial Control Input/Output
In PLCs and industrial controllers, it can buffer sensor inputs or drive indicator LEDs, thanks to its wide operating temperature range (-55°C to 125°C).
Test Equipment and Instrumentation
Its high-speed CMOS technology and 3-State outputs are suitable for buffering signals in test equipment, allowing for multiple measurement points to be connected to a single ADC.
- Q: What is the logic family of the MC74HC244AFR2?
- A: It belongs to the 74HC (High-Speed CMOS) logic family.
- Q: What is the function of this IC?
- A: It is a dual (2-channel) non-inverting buffer with 3-State outputs.
- Q: What is the operating voltage range?
- A: It operates from 2V to 6V, making it suitable for a variety of TTL and CMOS systems.
- Q: What is the output type?
- A: The outputs are 3-State, allowing for connection to shared buses.
- Q: What is the output current capability?
- A: It can source or sink 7.8mA per output.
- Q: What package is available?
- A: It comes in a 20-SOIC (0.209", 5.30mm Width) package.
MC74HC244AFR2.pdf
- Q: What is the logic family of the MC74HC244AFR2?
- A: It belongs to the 74HC (High-Speed CMOS) logic family.
- Q: What is the function of this IC?
- A: It is a dual (2-channel) non-inverting buffer with 3-State outputs.
- Q: What is the operating voltage range?
- A: It operates from 2V to 6V, making it suitable for a variety of TTL and CMOS systems.
- Q: What is the output type?
- A: The outputs are 3-State, allowing for connection to shared buses.
- Q: What is the output current capability?
- A: It can source or sink 7.8mA per output.
- Q: What package is available?
- A: It comes in a 20-SOIC (0.209", 5.30mm Width) package.