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| Product attributes | Property Value |
| Manufacturer | National Semiconductor |
| Product Series | 74FCT |
| Packaging | Bulk | |
| Part Status | Active |
| Logic Type | Buffer, Non-Inverting |
| Number of Elements | 2 |
| Number of Bits per Element | 4 |
| Input Type | - |
| Output Type | Tri-State, Non-Inverted |
| Current - Output High, Low | 15mA, 64mA |
| Voltage - Supply | 4.75V ~ 5.25V |
| Operating Temperature | 0°C ~ 70°C (TA) |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | 20-SOIC (0.295", 7.50mm Width) |
| Supplier Device Package | 20-SOIC |
The 74FCT244ASC is a high-speed, non-inverting octal buffer from National Semiconductor, part of the 74FCT logic family. It operates from a 4.75V to 5.25V supply, providing 15mA source and 64mA sink current capability. With two channels of Tri-State, non-inverted outputs, it is ideal for bus interfacing, memory driving, and signal buffering in 5V digital systems. The 20-SOIC package is suitable for space-constrained PCB designs.
- High Sink Current (64mA): Drives heavy capacitive loads and multiple fan-outs, ensuring reliable signal transmission.
- Tri-State Outputs: Enables bus sharing and isolation, preventing data contention in multiplexed systems.
- 74FCT High-Speed Family: Provides fast propagation delays, critical for high-frequency bus operation.
- Wide 5V Supply Tolerance: Operates reliably across 4.75V to 5.25V, accommodating standard 5V power rails.
High-Speed Bus Buffering
Use the 74FCT244ASC to buffer address and data lines in microprocessor systems. Its 64mA sink current ensures signal integrity over long PCB traces and multiple loads.
Memory Address Driving
Drive SRAM or DRAM address inputs with the non-inverting buffer. The Tri-State outputs allow multiple memory banks to share a common bus without contention.
Peripheral Interface Isolation
Isolate peripherals from the main system bus using the Tri-State control. This prevents bus conflicts during power-up or when peripherals are not in use.
Clock Signal Distribution
Buffer and distribute clock signals to multiple destinations. The fast propagation delay of the 74FCT family minimizes clock skew between different branches.
Industrial Control I/O
Interface between 5V logic controllers and industrial sensors or actuators. The high sink current can directly drive small relays or indicator LEDs with proper current limiting.
Test Equipment Interface
Use in automated test equipment to buffer signals between the DUT and measurement instruments. The Tri-State feature enables shared test buses for multiple channels.
- Q: What is the logic family of the 74FCT244ASC?
- A: It belongs to the 74FCT logic family, known for high speed and low power consumption.
- Q: What is the function of this IC?
- A: It is a non-inverting buffer with 2 channels, designed to boost signal drive strength.
- Q: What type of output does it have?
- A: It features Tri-State, non-inverted outputs, allowing for bus isolation and multiplexing.
- Q: What is the operating voltage range?
- A: The recommended supply voltage is 4.75V to 5.25V, making it suitable for 5V systems.
- Q: What is the output current capability?
- A: It can source 15mA and sink 64mA, providing robust drive for capacitive loads.
- Q: What package is available?
- A: It comes in a 20-SOIC (0.295", 7.50mm Width) package.
74FCT244ASC.pdf
- Q: What is the logic family of the 74FCT244ASC?
- A: It belongs to the 74FCT logic family, known for high speed and low power consumption.
- Q: What is the function of this IC?
- A: It is a non-inverting buffer with 2 channels, designed to boost signal drive strength.
- Q: What type of output does it have?
- A: It features Tri-State, non-inverted outputs, allowing for bus isolation and multiplexing.
- Q: What is the operating voltage range?
- A: The recommended supply voltage is 4.75V to 5.25V, making it suitable for 5V systems.
- Q: What is the output current capability?
- A: It can source 15mA and sink 64mA, providing robust drive for capacitive loads.
- Q: What package is available?
- A: It comes in a 20-SOIC (0.295", 7.50mm Width) package.