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SN74HCT240DWR
+NomenclatureIC BUFFER INVERT 5.5V 20SOIC
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FabricantTexas Instruments
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Pièce fabricant #SN74HCT240DWR
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Package 20-SOIC (0.295, 7.50mm Width)
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En stock6655
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Spécifications
| Attribut | Valeur |
| Package | Tape & Reel (TR),Cut Tape (CT),Bulk |
| Series | 74HCT |
| ProductStatus | Active |
| LogicType | Buffer, Inverting |
| NumberofElements | 2 |
| NumberofBitsperElement | 4 |
| OutputType | 3-State |
| Current-OutputHighLow | 6mA, 6mA |
| Voltage-Supply | 4.5V ~ 5.5V |
| OperatingTemperature | -40°C ~ 85°C (TA) |
| MountingType | Surface Mount |
| Package/Case | 20-SOIC (0.295, 7.50mm Width) |
Présentation
Description
Key features of the SN74HCT240DWR include:
1. Octal Configuration: It consists of eight buffer/driver circuits, making it suitable for managing multiple data lines.
2. Three-State Outputs: This allows the outputs to be in a high, low, or high-impedance state, providing flexibility in circuit design, especially for interfacing with buses or multiplexed data lines.
3. TTL-Compatible Inputs: The device is compatible with standard TTL logic levels, allowing for easy integration with other TTL devices.
4. Power Supply Range: It operates typically from a 4.5V to 5.5V power supply, making it suitable for use in 5V systems.
The SN74HCT240DWR is commonly used in applications requiring signal buffering and isolation, such as data buses and memory address drivers.
Equivalent
1. 74HCT240 - Nexperia/ON Semiconductor/Fairchild
2. MC74HCT240A - ON Semiconductor
3. CD74HCT240 - Texas Instruments
4. TC74HCT240 - Toshiba
These ICs share similar logic family characteristics and functionalities, making them suitable substitutes in most applications. Always check datasheets for compatibility in terms of electrical characteristics and package type.
Features
1. 8-Bit Buffer/Driver: It consists of eight independent buffer/driver circuits.
2. 3-State Outputs: Allows the device outputs to be in a high-impedance state, facilitating the connection of multiple devices on a single line without interference.
3. Inverting Functionality: Each buffer/driver inverts the input signal.
4. High-Speed CMOS: Operates with low power consumption while maintaining fast switching speeds.
5. Compatible Voltage Levels: Works with both TTL and CMOS logic levels, making it versatile for various applications.
6. Wide Supply Voltage Range: Operates typically between 4.5V to 5.5V.
7. Low Power Consumption: Typical power dissipation is minimal, contributing to efficient operation.
8. Input Clamping Diodes: Provides protection against electrostatic discharge.
9. Temperature Range: Usually specified for operation within a standard commercial temperature range.
10. Surface Mount Package: Available in a SOIC-20 package, convenient for modern PCB design and automated assembly.
These features make it suitable for buffering data and control signals in computing and communication systems.
Pinout
The SN74HCT240DWR functions as an octal buffer/line driver with 3-state outputs. It is designed to improve the performance and density of 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters. The device features two 4-bit sections with separate output-enable controls, providing flexibility in data handling.
Key functions include:
- Buffering: Amplifies input signals and drives the output with high current capability.
- Inverting: Inverts the input signals to produce the opposite logic level at the output.
- 3-State Outputs: Allows the outputs to be in one of three states—high, low, or high-impedance, enabling multiple devices to connect to a common bus without interference.
The 20 pins include power supply (V_CC), ground (GND), input and output pins, and control pins for enabling or disabling the outputs.