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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 3-State
Current - Output High, Low 15mA, 64mA
Voltage - Supply 4.75V ~ 5.25V
Operating Temperature 0°C ~ 70°C (TA)
Grade -
Qualification -
Mounting Type Through Hole
Package / Case 20-DIP (0.300", 7.62mm)
Supplier Device Package 20-PDIP

The 74FCT244PC is a high-performance non-inverting buffer from National Semiconductor, designed for 5V digital systems. Operating within a 4.75V to 5.25V supply range, it provides two channels of signal buffering with 3-State outputs. With a robust output current of 15mA source and 64mA sink, it can drive heavy bus loads and long traces. Housed in a 20-pin DIP package, this IC is ideal for memory address buffering, bus interfacing, and general signal amplification in TTL-compatible environments.

  • High Sink Current (64mA): Drives capacitive loads and long bus lines with fast edge rates, improving signal integrity.
  • 3-State Outputs: Enables bus sharing and multiplexing without external isolation components.
  • Wide 4.75V to 5.25V Supply: Compatible with standard 5V TTL logic, simplifying power design.
  • Through-Hole DIP Package: Easy to prototype and integrate into legacy PCB designs.

5V Bus Line Driving

Use the 74FCT244PC to buffer and drive high-capacitance 5V bus lines. Its 64mA sink current capability ensures fast signal edges and reliable data transfer in legacy TTL systems.

Memory Address Buffering

In microprocessor systems, this buffer can isolate and drive address lines to multiple memory banks. The 3-State outputs allow the address bus to be shared with other peripherals without contention.

Signal Fan-Out

When a single TTL signal needs to drive multiple loads, the 74FCT244PC provides the necessary fan-out. Its high current drive prevents signal degradation when connecting to several inputs.

Industrial Control I/O

In industrial controllers operating at 5V, this buffer can interface between a logic controller and external actuators or sensors, providing clean, amplified signals over short PCB traces.

Test Equipment Interface

For bench test equipment, the 74FCT244PC can buffer control signals from a microcontroller to front-panel LEDs or switches, ensuring stable logic levels despite varying loads.

Q: What is the logic family of the 74FCT244PC?
A: The 74FCT244PC belongs to the 74FCT logic family, known for high-speed, low-power operation.
Q: What is the function of this IC?
A: It is a non-inverting buffer with 2 channels, designed to strengthen and drive signals without inverting them.
Q: What type of output does it have?
A: It features 3-State outputs, allowing the outputs to be disabled (high-impedance) for bus multiplexing.
Q: What is the operating voltage range?
A: The recommended supply voltage range is 4.75V to 5.25V, making it suitable for standard 5V systems.
Q: What is the package type?
A: It comes in a 20-pin DIP (0.300", 7.62mm) package, ideal for through-hole PCB mounting.
Q: What are the output current capabilities?
A: It can source 15mA and sink 64mA, providing robust drive for capacitive loads and bus lines.
Base Product Number : 74FCT244
20-DIP 3-State 4.75V-5.25V 74FCT Buffer Bus Driving Logic IC Non-Inverting Signal Buffering
Q: What is the logic family of the 74FCT244PC?
A: The 74FCT244PC belongs to the 74FCT logic family, known for high-speed, low-power operation.
Q: What is the function of this IC?
A: It is a non-inverting buffer with 2 channels, designed to strengthen and drive signals without inverting them.
Q: What type of output does it have?
A: It features 3-State outputs, allowing the outputs to be disabled (high-impedance) for bus multiplexing.
Q: What is the operating voltage range?
A: The recommended supply voltage range is 4.75V to 5.25V, making it suitable for standard 5V systems.
Q: What is the package type?
A: It comes in a 20-pin DIP (0.300", 7.62mm) package, ideal for through-hole PCB mounting.
Q: What are the output current capabilities?
A: It can source 15mA and sink 64mA, providing robust drive for capacitive loads and bus lines.