Overview
The SN74HC04DBR, produced by Texas Instruments, is a hex inverter integrated circuit (IC) that belongs to the 74HC series. This device contains six independent inverters, each performing the Boolean function Y = A in positive logic. It is designed to operate over a wide voltage range of 2 V to 6 V and a temperature range of –40°C to +85°C, making it versatile for various digital logic applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Voltage - Supply | 2 V to 6 V | V |
| Operating Temperature | –40°C to +85°C | °C |
| Number of Circuits | 6 | - |
| Number of Inputs | 6 | - |
| Current - Quiescent (Max) | 2 µA | µA |
| Current - Output High, Low | 5.2 mA, 5.2 mA | mA |
| Logic Level - Low | 0.5 V to 1.8 V | V |
| Logic Level - High | 1.5 V to 4.2 V | V |
| Max Propagation Delay @ V, Max CL | 16 ns @ 6 V, 50 pF | ns |
| Package | 14-SSOP (0.209", 5.30mm Width) | - |
| Mounting Type | Surface Mount | - |
Key Features
- Buffered Inputs: The SN74HC04DBR has buffered inputs, which help in stabilizing the input signals.
- Wide Operating Voltage Range: It operates over a wide voltage range of 2 V to 6 V, making it suitable for various applications.
- Wide Operating Temperature Range: The device can operate in temperatures ranging from –40°C to +85°C.
- Significant Power Reduction: Compared to LSTTL logic ICs, the SN74HC04DBR offers significant power reduction.
- Balanced CMOS Push-Pull Outputs: The device has balanced outputs that can sink and source similar currents, ensuring stable output signals.
- Clamp Diode Structure: The inputs and outputs have both positive and negative clamping diodes to protect against voltage spikes.
Applications
- Synchronize Inverted Clock Inputs: The SN74HC04DBR can be used to synchronize inverted clock inputs in digital circuits.
- Debounce a Switch: It can be used to debounce switch inputs, ensuring clean and stable signals.
- Invert Digital Signals: The primary function of the device is to invert digital signals, making it essential in various digital logic circuits.
Q & A
- What is the primary function of the SN74HC04DBR?
The primary function of the SN74HC04DBR is to invert digital signals. It contains six independent inverters, each performing the Boolean function Y = A in positive logic.
- What is the operating voltage range of the SN74HC04DBR?
The SN74HC04DBR operates over a voltage range of 2 V to 6 V.
- What is the operating temperature range of the SN74HC04DBR?
The device operates in temperatures ranging from –40°C to +85°C.
- What type of outputs does the SN74HC04DBR have?
The SN74HC04DBR has balanced CMOS push-pull outputs, which can sink and source similar currents.
- How many independent inverters does the SN74HC04DBR contain?
The SN74HC04DBR contains six independent inverters.
- What is the maximum propagation delay of the SN74HC04DBR at 6 V and 50 pF load capacitance?
The maximum propagation delay is 16 ns at 6 V and 50 pF load capacitance.
- What type of package is the SN74HC04DBR available in?
The SN74HC04DBR is available in a 14-SSOP (0.209", 5.30mm Width) package.
- What are some common applications of the SN74HC04DBR?
Common applications include synchronizing inverted clock inputs, debouncing switches, and inverting digital signals.
- How should unused inputs be handled on the SN74HC04DBR?
Unused inputs must be terminated to either VCC or ground. They can be directly terminated or connected with a pull-up or pull-down resistor.
- What is the significance of the clamp diode structure in the SN74HC04DBR?
The clamp diode structure protects the inputs and outputs from voltage spikes by clamping them to safe levels.
