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| Product attributes | Property Value |
| Manufacturer | National Semiconductor |
| Product Series | 74FCT |
| Packaging | Bulk | |
| Part Status | Active |
| Logic Type | Buffer, 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 | Surface Mount |
| Package / Case | 20-SOIC (0.295", 7.50mm Width) |
| Supplier Device Package | 20-SOIC |
The 74FCT240SC from National Semiconductor is an inverting buffer in the 74FCT logic family. It features 2 channels with 3-State outputs, operating from 4.75V to 5.25V. With a sink current of 64mA and source current of 15mA, it is ideal for high-current applications. The 20-SOIC package is suitable for standard PCB layouts. Common uses include bus buffering, LED driving, and memory isolation.
- High Sink Current (64mA): Drives heavy loads like LEDs and long cables.
- Inverting Function: Provides signal inversion without additional logic gates.
- 3-State Outputs: Enables bus sharing and multiplexing.
- 74FCT Speed: Fast propagation delay for high-performance systems.
High-Current LED Driving
Drive LED arrays directly with the 64mA sink capability. The inverting function allows active-low control, simplifying logic design.
Bus Line Buffering
Buffer bidirectional bus lines in 5V systems. The 3-State outputs enable multiple devices to connect without signal conflicts.
Memory Data Bus Isolation
Isolate memory data buses during read/write cycles. The high sink current ensures fast discharge of capacitive loads.
Peripheral Device Control
Control peripheral devices with inverted logic signals. The 74FCT family provides low propagation delay for time-critical applications.
Telecom Line Interface
Interface telecom lines requiring inverted signal buffering. The robust output stage handles line capacitance effectively.
Industrial Sensor Interfacing
Buffer sensor signals in industrial environments. The 3-State output allows multiplexing multiple sensors to a single ADC.
- Q: What is the logic family of the 74FCT240SC?
- A: It belongs to the 74FCT logic family, offering fast CMOS performance.
- Q: What function does this IC perform?
- A: It is an inverting buffer with 2 channels and 3-State outputs.
- Q: What is the voltage range?
- A: It operates from 4.75V to 5.25V.
- Q: What are the output current ratings?
- A: It can source 15mA and sink 64mA.
- Q: What package is available?
- A: It comes in a 20-SOIC (0.295", 7.50mm Width) package.
- Q: What is the operating temperature range?
- A: It operates from 0°C to 70°C.
74FCT240SC.pdf
- Q: What is the logic family of the 74FCT240SC?
- A: It belongs to the 74FCT logic family, offering fast CMOS performance.
- Q: What function does this IC perform?
- A: It is an inverting buffer with 2 channels and 3-State outputs.
- Q: What is the voltage range?
- A: It operates from 4.75V to 5.25V.
- Q: What are the output current ratings?
- A: It can source 15mA and sink 64mA.
- Q: What package is available?
- A: It comes in a 20-SOIC (0.295", 7.50mm Width) package.
- Q: What is the operating temperature range?
- A: It operates from 0°C to 70°C.