Overview
The SN74HC08-Q1 is an automotive-grade quadruple 2-input AND gate produced by Texas Instruments. This device is designed to meet the stringent requirements of automotive applications and is AEC-Q100 qualified. It contains four independent 2-input AND gates, each performing the Boolean function Y = A ● B in positive logic. The device is available in 14-pin SOIC and TSSOP packages, making it versatile for various design needs.
Key Specifications
| Parameter | Min | Nom | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC) | 2 | 5 | 6 | V |
| Operating Free-Air Temperature (TA) | -40 | 125 | °C | |
| High-Level Input Voltage (VIH) | 1.5 | 4.2 | V | |
| Low-Level Input Voltage (VIL) | 0.5 | 1.8 | V | |
| Output High Voltage (VOH) | VCC - 0.1 | V | ||
| Output Low Voltage (VOL) | 0 | 0.1 | V | |
| Junction-to-Ambient Thermal Resistance (RθJA) | 133.6 (SOIC) | 151.7 (TSSOP) | °C/W |
Key Features
- AEC-Q100 Qualified: Suitable for automotive applications with a temperature range of -40°C to +125°C.
- Buffered Inputs: Provides improved signal integrity.
- Positive and Negative Input Clamp Diodes: Enhances input protection.
- Wide Operating Voltage Range: Operates from 2 V to 6 V.
- Significant Power Reduction: Compared to LSTTL logic ICs.
- Standard CMOS Inputs: High impedance inputs with low leakage current.
- Balanced CMOS Push-Pull Outputs: Capable of sinking and sourcing similar currents.
Applications
- Combining Power Good Signals: Useful in power management systems where multiple signals need to be combined.
- Enable Digital Signals: Can be used to enable or disable digital signals based on multiple input conditions.
- Motor Controllers: Can be used to control the RESET pin of a motor controller, ensuring all input signals are HIGH before enabling the controller.
Q & A
- What is the operating temperature range of the SN74HC08-Q1?
The operating temperature range is -40°C to +125°C.
- What are the available package types for the SN74HC08-Q1?
The device is available in 14-pin SOIC and TSSOP packages.
- What is the supply voltage range for the SN74HC08-Q1?
The supply voltage range is from 2 V to 6 V.
- What is the function of each gate in the SN74HC08-Q1?
Each gate performs the Boolean function Y = A ● B in positive logic.
- Is the SN74HC08-Q1 suitable for automotive applications?
Yes, it is AEC-Q100 qualified for automotive applications.
- What is the maximum capacitive load recommended for the outputs?
The maximum recommended capacitive load is ≤70 pF.
- How should unused outputs be handled?
Unused outputs can be left floating but should not be connected directly to VCC or ground.
- What are the thermal resistance values for the SOIC and TSSOP packages?
The junction-to-ambient thermal resistance is 133.6 °C/W for SOIC and 151.7 °C/W for TSSOP.
- Can the SN74HC08-Q1 drive larger capacitive loads?
Yes, but it is recommended to add a series resistor to limit the output current if larger capacitive loads are required.
- What are the typical applications of the SN74HC08-Q1?
Typical applications include combining power good signals, enabling digital signals, and controlling motor controllers.
