Overview
The SN74HC08-Q1, produced by Texas Instruments, is an automotive-grade quadruple 2-input AND gate integrated circuit. This device is designed to operate within a wide temperature range of –40°C to +125°C, making it suitable for various automotive applications. It features four independent 2-input AND gates, each performing the Boolean function Y = A ● B in positive logic. Although the device is now obsolete, its specifications and features remain relevant for understanding its capabilities.
Key Specifications
| Parameter | Min | Nom | Max | Unit |
|---|---|---|---|---|
| VCC Supply Voltage | 2 | 5 | 6 | V |
| VIH High-Level Input Voltage (VCC = 2 V) | 1.5 | V | ||
| VIH High-Level Input Voltage (VCC = 4.5 V) | 3.15 | V | ||
| VIH High-Level Input Voltage (VCC = 6 V) | 4.2 | V | ||
| VIL Low-Level Input Voltage (VCC = 2 V) | 0.5 | V | ||
| VIL Low-Level Input Voltage (VCC = 4.5 V) | 1.35 | V | ||
| VIL Low-Level Input Voltage (VCC = 6 V) | 1.8 | V | ||
| TA Operating Free-Air Temperature | –40 | 125 | °C | |
| IO Continuous Output Current | ±25 | mA | ||
| IJK Input Clamp Current | ±20 | mA | ||
| IOK Output Clamp Current | ±20 | mA | ||
| TJ Junction Temperature | 150 | °C | ||
| Tstg Storage Temperature | –65 | 150 | °C |
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: Protects against voltage spikes.
- 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.
- 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 Controller Reset Signals: Can combine multiple reset signals into a single active-low reset signal for motor controllers.
Q & A
- What is the operating temperature range of the SN74HC08-Q1?
The operating temperature range is –40°C to +125°C.
- What is the supply voltage range for the SN74HC08-Q1?
The supply voltage range is from 2 V to 6 V.
- How many AND gates are included in the SN74HC08-Q1?
The device includes four independent 2-input AND gates.
- What is the maximum continuous output current for the SN74HC08-Q1?
The maximum continuous output current is ±25 mA.
- Is the SN74HC08-Q1 AEC-Q100 qualified?
Yes, it is AEC-Q100 qualified for automotive applications.
- What type of inputs does the SN74HC08-Q1 have?
The device has standard CMOS inputs.
- Can the SN74HC08-Q1 drive larger capacitive loads?
Yes, but it is recommended not to exceed 70 pF without adding a series resistor to limit output current.
- What is the junction temperature limit for the SN74HC08-Q1?
The junction temperature limit is 150°C.
- Is the SN74HC08-Q1 still in production?
No, the SN74HC08-Q1 is obsolete and no longer in production.
- What are some common applications of the SN74HC08-Q1?
Common applications include combining power good signals, enabling digital signals, and motor controller reset signals.
