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Product attributes Property Value
Manufacturer Fairchild Semiconductor
Product Series 74F
Packaging Bulk |
Part Status Active
Logic Type Buffer, Inverting
Number of Elements 1
Number of Bits per Element 10
Input Type -
Output Type 3-State
Current - Output High, Low 15mA, 64mA
Voltage - Supply 4.5V ~ 5.5V
Operating Temperature 0°C ~ 70°C (TA)
Grade -
Qualification -
Mounting Type Through Hole
Package / Case 24-DIP (0.300", 7.62mm)
Supplier Device Package 24-PDIP
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The 74F828SC is a high-speed inverting buffer from Fairchild Semiconductor, designed for 5V systems. It features a single channel with 3-State outputs, capable of sinking 64mA and sourcing 15mA. Operating from 4.5V to 5.5V, it is ideal for bus-oriented applications requiring strong drive and signal inversion. The 24-DIP package ensures easy integration into through-hole designs. Typical uses include memory address driving, backplane communication, and general-purpose signal buffering in industrial and computing equipment.

  • High Drive Current (64mA Sink): Drives heavy capacitive loads and long bus lines without signal degradation.
  • 3-State Outputs: Enables bus multiplexing and shared data lines, reducing system complexity.
  • Wide 4.5V to 5.5V Supply Range: Directly compatible with standard 5V TTL logic, simplifying power design.
  • Inverting Function: Eliminates the need for external inverter ICs in active-low signal paths.
  • Proven 74F Family: High-speed bipolar technology ensures fast propagation delays for time-critical applications.

High-Speed Bus Interfacing

Use the 74F828SC to buffer and invert address or data lines in 5V microprocessor systems. Its 64mA sink current handles high-capacitance traces, reducing signal degradation.

Memory Address Driving

In DRAM or SRAM controllers, this buffer provides the necessary drive strength and 3-State capability to multiplex address buses without additional logic.

Signal Inversion in Control Logic

When active-low control signals are needed, the inverting function converts standard logic levels, simplifying PCB layout by eliminating external inverter gates.

Peripheral Interface Buffering

Connect the 74F828SC between a microcontroller and peripheral devices to protect sensitive outputs from external noise and provide a clean, inverted signal path.

Backplane Drivers

In telecom or industrial backplanes, the 3-State outputs allow multiple boards to share a common bus, with the high drive current ensuring signal integrity over long traces.

Test Equipment Signal Conditioning

For benchtop instruments, this buffer can condition and invert TTL-level signals, providing a robust interface for measurement probes and logic analyzers.

Q: What is the logic family of the 74F828SC?
A: The 74F828SC belongs to the 74F logic family, known for high-speed bipolar performance.
Q: What is the function of this IC?
A: It is a single-channel inverting buffer with 3-State outputs, ideal for bus driving and signal inversion.
Q: What is the output type?
A: The outputs are 3-State, allowing connection to shared buses with high-impedance states.
Q: What is the operating voltage range?
A: It operates from 4.5V to 5.5V, making it compatible with standard 5V TTL systems.
Q: What is the package type?
A: It comes in a 24-DIP (0.300", 7.62mm) package, suitable for through-hole mounting.
Q: What are the output current capabilities?
A: It can source or sink 15mA and 64mA respectively, providing strong drive for capacitive loads.
Base Product Number : 74F828
24-DIP 3-State 4.5V-5.5V 74F Buffer Bus Driver Fairchild Inverting Logic IC Signal Buffering
Q: What is the logic family of the 74F828SC?
A: The 74F828SC belongs to the 74F logic family, known for high-speed bipolar performance.
Q: What is the function of this IC?
A: It is a single-channel inverting buffer with 3-State outputs, ideal for bus driving and signal inversion.
Q: What is the output type?
A: The outputs are 3-State, allowing connection to shared buses with high-impedance states.
Q: What is the operating voltage range?
A: It operates from 4.5V to 5.5V, making it compatible with standard 5V TTL systems.
Q: What is the package type?
A: It comes in a 24-DIP (0.300", 7.62mm) package, suitable for through-hole mounting.
Q: What are the output current capabilities?
A: It can source or sink 15mA and 64mA respectively, providing strong drive for capacitive loads.