Overview
The SN74HC04DR, produced by Texas Instruments, is a hex inverter integrated circuit (IC) that contains six independent inverters. Each gate performs the Boolean function Y = A in positive logic, making it a versatile component for various digital logic applications. The device is part of the 74HC series, known for its high-speed CMOS logic and low power consumption. It operates over a wide voltage range from 2 V to 6 V and can function within a temperature range of –40°C to +85°C, making it suitable for a broad range of environments and applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Voltage Range | 2 V to 6 V | V |
| Operating Temperature Range | –40°C to +85°C | °C |
| Propagation Delay (A to Y) | 8 ns to 120 ns | ns |
| Transition Time (Y) | 6 ns to 95 ns | ns |
| Input Leakage Current | ±0.1 µA to ±1 µA | µA |
| Supply Current (ICC) | 2 µA to 20 µA | µA |
| Input Capacitance | 3 pF to 10 pF | pF |
| High-Level Output Voltage (VOH) | 1.9 V to 5.9 V | V |
| Low-Level Output Voltage (VOL) | 0.001 V to 0.4 V | V |
| Package Types | SOIC, SSOP, PDIP, SOP, TSSOP |
Key Features
- Buffered Inputs: Ensures stable and reliable input signals.
- Wide Operating Voltage Range: Operates from 2 V to 6 V, making it versatile for different power supply conditions.
- Wide Operating Temperature Range: Functions from –40°C to +85°C, suitable for various environmental conditions.
- High Fanout Capability: Supports up to 10 LSTTL loads, enhancing its utility in complex digital circuits.
- Significant Power Reduction: Compared to LSTTL logic ICs, it offers lower power consumption.
- Balanced CMOS Push-Pull Outputs: Capable of sinking and sourcing similar currents, ensuring balanced output performance.
- Clamp Diode Structure: Includes positive and negative clamping diodes for input and output protection.
Applications
- Synchronize Inverted Clock Inputs: Useful in timing and clock signal management in digital circuits.
- Debounce a Switch: Helps in stabilizing switch inputs to prevent multiple triggers.
- Invert Digital Signals: Essential for logic operations where signal inversion is required.
- Counter and Flip-Flop Circuits: Can be used to add an additional stage to counters or to invert clock inputs for flip-flops.
Q & A
- What is the SN74HC04DR used for? The SN74HC04DR is used as a hex inverter IC, containing six independent inverters that perform the Boolean function Y = A in positive logic.
- What is the operating voltage range of the SN74HC04DR? The operating voltage range is from 2 V to 6 V.
- What is the operating temperature range of the SN74HC04DR? The operating temperature range is from –40°C to +85°C.
- What types of packages are available for the SN74HC04DR? The device is available in SOIC, SSOP, PDIP, SOP, and TSSOP packages.
- How many LSTTL loads can the SN74HC04DR support? It supports up to 10 LSTTL loads.
- What are the key features of the SN74HC04DR? Key features include buffered inputs, wide operating voltage and temperature ranges, high fanout capability, significant power reduction, and balanced CMOS push-pull outputs.
- How does the SN74HC04DR protect its inputs and outputs? The device includes positive and negative clamping diodes for input and output protection.
- Can the SN74HC04DR be used in safety-critical applications? Users must determine the suitability of the component for their specific applications and ensure proper validation and testing.
- What are some common applications of the SN74HC04DR? Common applications include synchronizing inverted clock inputs, debouncing switches, inverting digital signals, and use in counter and flip-flop circuits.
- How do I handle unused inputs on the SN74HC04DR? Unused inputs must be terminated to either VCC or ground, either directly or with pull-up or pull-down resistors.
