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| Product attributes | Property Value |
| Manufacturer | National Semiconductor |
| Product Series | 74BCT |
| Packaging | Bulk | |
| Part Status | Active |
| Logic Type | Buffer, Inverting |
| Number of Elements | 2 |
| Number of Bits per Element | 4 |
| Input Type | - |
| Output Type | Tri-State, Inverted |
| Current - Output High, Low | 15mA, 15mA |
| Voltage - Supply | 4.5V ~ 5.5V |
| 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 74BCT2240PC from National Semiconductor is a dual inverting buffer featuring Tri-State outputs. Operating from 4.5V to 5.5V, this 20-DIP device provides two independent buffering channels with 15mA output drive. The 74BCT logic family delivers a balance of high speed and low power consumption, making it suitable for 5V bus-oriented systems. Its through-hole package is ideal for prototyping, educational projects, and maintaining legacy equipment. The inverting function is useful for active-low signal distribution and logic level restoration.
- Dual Independent Channels: Provides two buffered inverting paths in a single package, saving board space.
- Tri-State Outputs: Allows for bus sharing and output disabling without additional logic.
- Through-Hole DIP Package: Easy to solder, socket, and use in breadboards for rapid development.
- TTL-Compatible Inputs: Ensures direct compatibility with standard 5V TTL logic families.
Through-Hole Prototyping
The 20-DIP package is perfect for breadboard-based prototyping and educational labs. Use the 74BCT2240PC to teach fundamental concepts of bus buffering and signal inversion in digital logic courses.
TTL-to-CMOS Interfacing
Use this buffer to interface between TTL logic and CMOS devices. The BCT family's input thresholds are TTL-compatible, while outputs can drive CMOS loads, simplifying mixed-technology designs.
Dual-Channel Signal Conditioning
Employ both channels to buffer and invert two independent clock or data signals. The matched propagation delays between channels help maintain timing alignment in dual-path applications.
Legacy System Maintenance
In older industrial equipment using 5V logic, this DIP buffer can replace obsolete components. Its Tri-State outputs allow for safe bus isolation during system diagnostics.
Peripheral Driver for LEDs
Use the inverting outputs to drive indicator LEDs with active-low logic. The 15mA sink capability is sufficient for standard LEDs with appropriate series resistors.
Noise-Immune Signal Distribution
In noisy factory environments, use this buffer to clean and invert signals from sensors. The BCT family's high noise immunity ensures reliable operation near motors and relays.
- Q: What logic family does the 74BCT2240PC belong to?
- A: It is part of the 74BCT family, which combines Bipolar CMOS Technology for high speed and low power consumption.
- Q: What is the function of this IC?
- A: It is a dual-channel inverting buffer with Tri-State outputs, providing signal inversion and buffering for two independent lines.
- Q: What is the output type?
- A: The outputs are Tri-State (3-State) and inverted, allowing for high-impedance states and signal inversion.
- Q: What is the operating voltage range?
- A: The supply voltage range is 4.5V to 5.5V, compatible with standard 5V logic systems.
- Q: What is the package type?
- A: It comes in a 20-DIP (0.300", 7.62mm) through-hole package, ideal for prototyping and breadboarding.
- Q: What is the output current capability?
- A: Each output can source or sink 15mA, suitable for driving standard logic loads.
74BCT2240PC.pdf
- Q: What logic family does the 74BCT2240PC belong to?
- A: It is part of the 74BCT family, which combines Bipolar CMOS Technology for high speed and low power consumption.
- Q: What is the function of this IC?
- A: It is a dual-channel inverting buffer with Tri-State outputs, providing signal inversion and buffering for two independent lines.
- Q: What is the output type?
- A: The outputs are Tri-State (3-State) and inverted, allowing for high-impedance states and signal inversion.
- Q: What is the operating voltage range?
- A: The supply voltage range is 4.5V to 5.5V, compatible with standard 5V logic systems.
- Q: What is the package type?
- A: It comes in a 20-DIP (0.300", 7.62mm) through-hole package, ideal for prototyping and breadboarding.
- Q: What is the output current capability?
- A: Each output can source or sink 15mA, suitable for driving standard logic loads.