Overview
The SN74AHCT540DWRE4 is an octal buffer/inverter with 3-state outputs, manufactured by Texas Instruments. This integrated circuit is part of the AHC (Advanced High-Speed CMOS) family, known for its high-speed operation and low power consumption. The device is designed to provide non-inverted data when the outputs are not in the high-impedance state, making it suitable for a variety of digital logic applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Manufacturer | TEXAS INSTRUMENTS | |
| Type of integrated circuit | digital | |
| Kind of integrated circuit | buffer, inverting, line driver | |
| Number of channels | 8 | |
| Technology | CMOS | |
| Mounting | SMD | |
| Case | SO20 | |
| Operating temperature | -40...125°C | |
| Kind of output | 3-state | |
| Quiescent current | 40µA | |
| Supply voltage range | -0.5 to 7 V | |
| Input voltage range | -0.5 to 7 V | |
| Output voltage range | -0.5 to VCC + 0.5 V | |
| ESD protection | ±1000 V (HBM), ±2000 V (CDM) | |
| Package dimensions | Length: 12.8mm, Height: 2.65mm, Width: 7.5mm, Thickness: 2.35mm |
Key Features
- TTL-voltage compatible inputs: Ensures compatibility with a wide range of digital logic systems.
- 3-state outputs: Allows outputs to be in a high-impedance state, which is useful for bus-oriented applications.
- Low quiescent current: Consumes only 40µA, making it power-efficient.
- High ESD protection: Exceeds JESD 22 standards with ±1000 V (HBM) and ±2000 V (CDM) protection.
- Wide operating temperature range: Operates from -40°C to 125°C, suitable for various environmental conditions.
- Latch-up performance: Exceeds 250mA per JESD 17, ensuring robust operation.
Applications
- Digital logic circuits: Ideal for buffering and inverting signals in digital logic systems.
- Bus-oriented systems: The 3-state outputs make it suitable for applications where multiple devices share a common bus.
- Industrial control systems: Its wide operating temperature range and robust ESD protection make it suitable for industrial environments.
- Automotive electronics: Can be used in automotive systems due to its ability to operate over a wide temperature range.
Q & A
- What is the primary function of the SN74AHCT540DWRE4?
The primary function is to act as an octal buffer/inverter with 3-state outputs.
- What is the operating temperature range of the SN74AHCT540DWRE4?
The operating temperature range is from -40°C to 125°C.
- What type of inputs does the SN74AHCT540DWRE4 have?
The inputs are TTL-voltage compatible.
- What is the quiescent current of the SN74AHCT540DWRE4?
The quiescent current is 40µA.
- What kind of ESD protection does the SN74AHCT540DWRE4 offer?
The device offers ±1000 V (HBM) and ±2000 V (CDM) ESD protection.
- What is the package type of the SN74AHCT540DWRE4?
The package type is SO20 (20-pin Small Outline IC).
- Can the SN74AHCT540DWRE4 be used in industrial control systems?
Yes, it is suitable for industrial control systems due to its wide operating temperature range and robust ESD protection.
- Is the SN74AHCT540DWRE4 still in production?
No, this product is discontinued and no longer carried by some suppliers like DigiKey.
- What are some potential alternatives to the SN74AHCT540DWRE4?
Alternatives can be found by comparing similar specifications, such as the SN74AHCT540DW or other logic buffers/drivers from Texas Instruments or other manufacturers.
- How do I ensure the high-impedance state during power-up or power-down?
To ensure the high-impedance state, the output-enable (OE) input should be tied to VCC through a pull-up resistor.
