Overview
The SN74HC04DRE4 is a hex inverter integrated circuit produced by Texas Instruments. This device contains six independent inverters, each performing the Boolean function Y = A in positive logic. It is part of the SN74HC series, known for its wide operating voltage range and low power consumption, making it versatile for various digital logic applications.
Key Specifications
| Parameter | Minimum | Typical | Maximum | Unit |
|---|---|---|---|---|
| Supply Voltage (VCC) | 2 | 5 | 6 | V |
| High-Level Input Voltage (VIH) | 1.5 (VCC=2V), 3.15 (VCC=4.5V), 4.2 (VCC=6V) | V | ||
| Low-Level Input Voltage (VIL) | 0.5 (VCC=2V), 1.35 (VCC=4.5V), 1.8 (VCC=6V) | V | ||
| Input Transition Rise or Fall Rate | 1000 (VCC=2V), 500 (VCC=4.5V), 400 (VCC=6V) | ns | ||
| Operating Free-Air Temperature | -40 | 85 | °C | |
| Propagation Delay (tpd) | 8 | ns | ||
| Output Drive Capability | ±4 mA (at VCC=5V) | mA | ||
| Input Current Leakage | 1 | µA | ||
| Supply Current (ICC) | 20 | µA |
Key Features
- Wide Operating Voltage Range: 2 V to 6 V, making it suitable for a variety of applications.
- Low Power Consumption: Maximum supply current (ICC) of 20 µA.
- High Output Drive Capability: Can drive up to 10 LSTTL loads and has ±4 mA output drive at 5 V.
- Low Input Current: Maximum input current leakage of 1 µA.
- Fast Propagation Delay: Typical propagation delay of 8 ns.
- Buffered Inputs: Reduces the impact of input capacitance and noise.
- Clamp Diode Structure: Inputs and outputs have both positive and negative clamping diodes for protection.
- Balanced CMOS Push-Pull Outputs: Allows the device to sink and source similar currents, ensuring balanced output.
Applications
- Synchronize Inverted Clock Inputs: Useful in timing and clock signal management.
- Debounce a Switch: Helps in stabilizing switch inputs to prevent multiple triggers.
- Invert Digital Signals: Essential in various digital logic circuits where signal inversion is required.
- Cameras and Infotainment Systems: Used in consumer electronics for signal processing and logic operations.
- E-Meters and Ethernet Switches: Utilized in measurement and networking devices for logical operations.
Q & A
- What is the function of the SN74HC04DRE4?
The SN74HC04DRE4 contains six independent inverters, each performing the Boolean function Y = A in positive logic.
- What is the operating voltage range of the SN74HC04DRE4?
The operating voltage range is from 2 V to 6 V.
- What is the typical propagation delay of the SN74HC04DRE4?
The typical propagation delay is 8 ns.
- How many LSTTL loads can the SN74HC04DRE4 drive?
The device can drive up to 10 LSTTL loads.
- What is the maximum supply current (ICC) of the SN74HC04DRE4?
The maximum supply current is 20 µA.
- What is the input current leakage of the SN74HC04DRE4?
The maximum input current leakage is 1 µA.
- What is the output drive capability of the SN74HC04DRE4 at 5 V?
The output drive capability is ±4 mA at 5 V.
- What are some common applications of the SN74HC04DRE4?
Common applications include synchronizing inverted clock inputs, debouncing switches, inverting digital signals, and use in cameras, infotainment systems, E-meters, and Ethernet switches.
- How should unused inputs be handled on the SN74HC04DRE4?
Unused inputs must be terminated to either VCC or ground to ensure proper device operation.
- What are the thermal limits for the SN74HC04DRE4?
The operating free-air temperature range is from -40°C to 85°C, and the maximum junction temperature should not exceed the values specified in the Absolute Maximum Ratings.
