Overview
The SN74ALS240AN is an octal buffer/driver integrated circuit produced by Texas Instruments. This component is designed to enhance the performance and density of 3-state memory address drivers, clock drivers, and bus-oriented receivers and transmitters. It features 3-state outputs, which are particularly useful for driving bus lines or buffering memory address registers. The device is part of the Advanced Low-Power Schottky (ALS) family, known for its low power consumption and high performance.
Key Specifications
| Parameter | Description | Min | Nom | Max | Unit |
|---|---|---|---|---|---|
| VCC (Supply Voltage) | 4.5 | 5 | 5.5 | V | |
| VIH (High-Level Input Voltage) | 2 | V | |||
| VIL (Low-Level Input Voltage) | 0.8 | V | |||
| IOH (High-Level Output Current) | -15 | mA | |||
| IOL (Low-Level Output Current) | 24 | mA | |||
| TA (Operating Free-Air Temperature) | 0 | 70 | °C | ||
| Propagation Delay | 18 | ns | |||
| Number of Pins | 20 | ||||
| Package Type | PDIP |
Key Features
- 3-State Outputs: Capable of driving bus lines or buffering memory address registers.
- pnp Inputs: Reduce DC loading.
- High Fan-Out and Improved Fan-In: Enhances the overall performance of the circuit.
- Inverting Logic Function: Acts as an inverter, providing complementary outputs.
- Low Power Consumption: Part of the Advanced Low-Power Schottky (ALS) family.
Applications
- Memory Address Drivers: Used to drive memory address lines efficiently.
- Clock Drivers: Suitable for driving clock signals in digital circuits.
- Bus-Oriented Receivers and Transmitters: Ideal for bus communication systems.
- Digital Logic Circuits: Can be used in various digital logic applications requiring buffering and inversion.
Q & A
- What is the SN74ALS240AN used for?
The SN74ALS240AN is used as an octal buffer/driver, particularly for driving bus lines, buffering memory address registers, and in various digital logic applications.
- What is the operating voltage range of the SN74ALS240AN?
The operating voltage range is from 4.5 V to 5.5 V.
- What is the maximum operating temperature of the SN74ALS240AN?
The maximum operating temperature is 70°C.
- What type of package does the SN74ALS240AN come in?
The SN74ALS240AN comes in a 20-pin PDIP (Plastic Dual In-Line Package) package.
- What is the propagation delay of the SN74ALS240AN?
The propagation delay is approximately 18 ns.
- Does the SN74ALS240AN have 3-state outputs?
Yes, the SN74ALS240AN features 3-state outputs.
- What is the high-level output current of the SN74ALS240AN?
The high-level output current is -15 mA.
- What is the low-level output current of the SN74ALS240AN?
The low-level output current is 24 mA.
- Can the SN74ALS240AN be used in bus communication systems?
Yes, it is suitable for use in bus-oriented receivers and transmitters.
- Is the SN74ALS240AN part of the Advanced Low-Power Schottky (ALS) family?
Yes, it is part of the ALS family, known for low power consumption and high performance.
