Overview
The SN74HC04DBRG4 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 74HC series, known for its high-speed CMOS logic and wide operating voltage range. The SN74HC04 is available in various packages, including the DBRG4 package, which is a 14-pin SSOP (Shrink Small Outline Package).
Key Specifications
| Parameter | Condition | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| VCC (Supply Voltage) | 2 | 6 | V | ||
| TA (Operating Free-Air Temperature) | -40 | 85 | °C | ||
| VOH (High-Level Output Voltage) | VCC = 4.5 V, IOH = -20 µA | 4.4 | 4.499 | 4.4 | V |
| VOL (Low-Level Output Voltage) | VCC = 4.5 V, IOL = 20 µA | 0.001 | 0.1 | 0.1 | V |
| tpd (Propagation Delay) | VCC = 4.5 V | 9 | 19 | 24 | ns |
| tt (Transition Time) | VCC = 4.5 V | 8 | 15 | 19 | ns |
| ICC (Supply Current) | VCC = 6 V, VI = VCC or 0 | 2 | 20 | µA | |
| Ci (Input Capacitance) | VCC = 2 V to 6 V | 3 | 10 | pF |
Key Features
- Buffered Inputs: Provides improved signal integrity and noise immunity.
- Wide Operating Voltage Range: Operates from 2 V to 6 V, making it versatile for various applications.
- Wide Operating Temperature Range: Functional from -40°C to +85°C.
- High Fanout Capability: Supports up to 10 LSTTL loads.
- Low Power Consumption: Significant power reduction compared to LSTTL logic ICs.
- Balanced CMOS Push-Pull Outputs: Allows the device to sink and source similar currents, ensuring balanced output.
- Clamp Diode Structure: Inputs and outputs have both positive and negative clamping diodes for protection.
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.
- 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 primary function of the SN74HC04DBRG4?
The primary function is to perform six independent inverter operations, each following the Boolean function Y = A in positive logic.
- What is the operating voltage range of the SN74HC04DBRG4?
The device operates from 2 V to 6 V.
- What is the maximum operating temperature for the SN74HC04DBRG4?
The device can operate up to 85°C.
- How many LSTTL loads can the SN74HC04DBRG4 support?
It can support up to 10 LSTTL loads.
- What is the typical propagation delay for the SN74HC04DBRG4 at VCC = 4.5 V?
The typical propagation delay is 19 ns.
- What is the input capacitance of the SN74HC04DBRG4?
The input capacitance is typically 3 pF to 10 pF.
- Can the SN74HC04DBRG4 be used in high-speed applications?
- How should unused inputs be handled on the SN74HC04DBRG4?
Unused inputs must be terminated at VCC or GND.
- What is the significance of the clamp diode structure in the SN74HC04DBRG4?
The clamp diode structure protects the inputs and outputs from voltage spikes by clamping them to safe levels.
- Can the SN74HC04DBRG4 be used in safety-critical applications?
It is important to carefully evaluate and test the device in the specific application to ensure it meets all safety and reliability requirements.
