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| Product attributes | Property Value |
| Manufacturer | Texas Instruments |
| Product Series | 74HC |
| 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 | 7.8mA, 7.8mA |
| Voltage - Supply | 2V ~ 6V |
| Operating Temperature | -55°C ~ 125°C (TA) |
| Grade | - |
| Qualification | - |
| Mounting Type | Through Hole |
| Package / Case | 20-DIP (0.300", 7.62mm) |
| Supplier Device Package | 20-PDIP |
| ROHS |  |
The CD74HC240E is a dual-channel inverting buffer from Texas Instruments. It operates from 2V to 6V and provides 3-State outputs with 7.8mA drive capability. Packaged in a 20-DIP, it is suitable for signal inversion, buffering, and bus isolation in 5V and 3.3V systems.
- Wide Supply Range (2V-6V): Works with both 3.3V and 5V logic systems.
- 3-State Outputs: Enables bus sharing and isolation.
- High-Speed CMOS: Faster than standard 4000B series, suitable for higher-frequency signals.
- Wide Temperature Range (-55°C to 125°C): Reliable in extreme conditions.
5V and 3.3V System Buffering
Ideal for buffering signals in both 5V and 3.3V systems, providing compatibility across different logic levels.
Bus Isolation and Multiplexing
With 3-State outputs, it can isolate bus segments or multiplex multiple data sources onto a single bus.
Memory Interface
Buffers and inverts address/data lines for memory devices, ensuring proper timing and signal integrity.
Microcontroller I/O Expansion
Expands the output drive capability of a microcontroller, allowing it to control multiple loads or peripherals.
Industrial Control Logic
Used in industrial control panels for signal inversion and buffering of control signals at 5V or 6V logic levels.
Test Fixtures and Instrumentation
Provides reliable signal buffering in test equipment, ensuring accurate signal transmission to measurement devices.
- Q: What is the logic family of the CD74HC240E?
- A: It belongs to the 74HC high-speed CMOS logic family.
- Q: What is the function of this IC?
- A: It is a dual-channel inverting buffer.
- Q: What is the output type?
- A: It has 3-State outputs.
- Q: What is the operating voltage range?
- A: It operates from 2V to 6V.
- Q: What is the package type?
- A: It comes in a 20-DIP package.
- Q: What is the output current capability?
- A: It can source or sink 7.8mA.
CD74HC240E.pdf
- Q: What is the logic family of the CD74HC240E?
- A: It belongs to the 74HC high-speed CMOS logic family.
- Q: What is the function of this IC?
- A: It is a dual-channel inverting buffer.
- Q: What is the output type?
- A: It has 3-State outputs.
- Q: What is the operating voltage range?
- A: It operates from 2V to 6V.
- Q: What is the package type?
- A: It comes in a 20-DIP package.
- Q: What is the output current capability?
- A: It can source or sink 7.8mA.