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| Product attributes | Property Value |
| Manufacturer | onsemi |
| Product Series | 74HCT |
| 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 | 6mA, 6mA |
| Voltage - Supply | 4.5V ~ 5.5V |
| 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 MC74HCT244AFL1 from onsemi is a high-speed CMOS non-inverting buffer with two channels and 3-State outputs. Designed for 4.5V to 5.5V operation, it is fully TTL-compatible, making it an excellent choice for interfacing with legacy TTL logic. With a 6mA output drive capability, it can reliably buffer signals to multiple loads. Its wide temperature range and 20-SOIC package make it suitable for industrial and commercial applications requiring robust signal buffering.
- TTL-Compatible Inputs: Directly interfaces with 5V TTL logic without additional level-shifting circuitry.
- 3-State Outputs: Facilitates bus-oriented designs by allowing outputs to be disabled.
- Non-Inverting Buffer: Preserves the original logic level while providing signal buffering and fan-out.
- Wide Operating Temperature Range (-55°C to 125°C): Reliable in extreme environments.
TTL-to-CMOS Interfacing
The 74HCT family is specifically designed with TTL-compatible input thresholds. Use the MC74HCT244AFL1 to buffer signals from legacy TTL logic into CMOS circuits, ensuring reliable logic level detection.
Microcontroller Output Buffering
Buffer the output pins of a 5V microcontroller to drive multiple loads or longer traces. The 3-State outputs allow the microcontroller to share a data bus with other peripherals without conflicts.
Memory and Peripheral Selection
Use this non-inverting buffer to drive chip-select or enable lines to memory and peripheral devices. The 3-State outputs are crucial for multiplexing multiple devices on a single control line.
Driving Multiple Logic Inputs
When a single signal needs to be distributed to several ICs, the MC74HCT244AFL1 provides the necessary fan-out. Its 6mA output current can drive multiple TTL or CMOS inputs, ensuring signal integrity.
Industrial Control Signal Conditioning
In industrial environments, this buffer can condition and distribute control signals. Its wide temperature range (-55°C to 125°C) ensures reliable operation in harsh conditions.
Test and Measurement Equipment
Use the buffer to isolate and drive signals in test setups. The 3-State outputs allow for easy connection and disconnection of test points from a shared measurement bus.
- Q: What is the logic family of the MC74HCT244AFL1?
- A: It is part of the 74HCT (High-Speed CMOS with TTL-compatible inputs) logic family, making it ideal for interfacing with TTL logic.
- Q: What is the function of this IC?
- A: It is a non-inverting buffer with 2 channels, designed to buffer digital signals without changing their logic level.
- Q: What type of output does it have?
- A: It features 3-State outputs, allowing the outputs to be placed in a high-impedance state for bus sharing.
- Q: What is the operating voltage range?
- A: The MC74HCT244AFL1 operates at a standard TTL-compatible voltage range of 4.5V to 5.5V.
- Q: What is the package type?
- A: It is available in a 20-SOIC (0.209", 5.30mm Width) surface-mount package.
- Q: What is the output current capability?
- A: It can source and sink 6mA of current per output, suitable for driving TTL loads and LEDs.
MC74HCT244AFL1.pdf
- Q: What is the logic family of the MC74HCT244AFL1?
- A: It is part of the 74HCT (High-Speed CMOS with TTL-compatible inputs) logic family, making it ideal for interfacing with TTL logic.
- Q: What is the function of this IC?
- A: It is a non-inverting buffer with 2 channels, designed to buffer digital signals without changing their logic level.
- Q: What type of output does it have?
- A: It features 3-State outputs, allowing the outputs to be placed in a high-impedance state for bus sharing.
- Q: What is the operating voltage range?
- A: The MC74HCT244AFL1 operates at a standard TTL-compatible voltage range of 4.5V to 5.5V.
- Q: What is the package type?
- A: It is available in a 20-SOIC (0.209", 5.30mm Width) surface-mount package.
- Q: What is the output current capability?
- A: It can source and sink 6mA of current per output, suitable for driving TTL loads and LEDs.