Overview
The SN74HC04DBRE4 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 from 2 V to 6 V. The SN74HC04DBRE4 is available in a SSOP (Shrink Small Outline Package) with 14 pins, making it suitable for a variety of digital logic applications.
Key Specifications
| Parameter | Condition | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Operating Voltage (VCC) | 2 | 6 | V | ||
| Operating Temperature (TA) | -40 | 85 | °C | ||
| Input Voltage (VI) | 0 to VCC | 0 | VCC | V | |
| Output Voltage (VO) | 0 to VCC | 0 | VCC | V | |
| Propagation Delay (tpd) | VCC = 2 V | 45 | 95 | 120 | ns |
| Propagation Delay (tpd) | VCC = 4.5 V | 9 | 19 | 24 | ns |
| Propagation Delay (tpd) | VCC = 6 V | 8 | 16 | 20 | ns |
| Transition Time (tt) | VCC = 2 V | 38 | 75 | 95 | ns |
| Transition Time (tt) | VCC = 4.5 V | 8 | 15 | 19 | ns |
| Transition Time (tt) | VCC = 6 V | 6 | 13 | 16 | ns |
| Input Leakage Current (II) | VI = VCC or 0 | ±1 | µA | ||
| Supply Current (ICC) | VI = VCC or 0 | 20 | µA | ||
| Input Capacitance (Ci) | 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: Functions from –40°C to +85°C, suitable for a broad range of environmental conditions.
- High Fanout Capability: Supports up to 10 LSTTL loads, enhancing its utility in complex digital circuits.
- Low Power Consumption: Significant power reduction compared to LSTTL logic ICs, contributing to energy-efficient designs.
- Balanced CMOS Push-Pull Outputs: Allows the device to sink and source similar currents, ensuring balanced output performance.
- Clamp Diode Structure: Includes positive and negative clamping diodes to protect against voltage spikes and noise.
Applications
- Synchronizing Inverted Clock Inputs: Useful in timing and clock signal management within digital circuits.
- Debouncing Switches: Helps in stabilizing switch inputs to prevent multiple triggers from a single switch press.
- Inverting Digital Signals: Essential for logic operations where signal inversion is required.
- Adding Stages to Counters: Can be used to add an additional stage to a counter with an external flip-flop, particularly useful in counter circuits that require negative edge triggers.
Q & A
- What is the SN74HC04DBRE4 used for?
The SN74HC04DBRE4 is used as a hex inverter in digital logic circuits, providing six independent inverters that perform the Boolean function Y = A in positive logic.
- What is the operating voltage range of the SN74HC04DBRE4?
The operating voltage range is from 2 V to 6 V.
- What is the operating temperature range of the SN74HC04DBRE4?
The operating temperature range is from –40°C to +85°C.
- How many inverters does the SN74HC04DBRE4 contain?
The device contains six independent inverters.
- What is the package type of the SN74HC04DBRE4?
The SN74HC04DBRE4 is available in a SSOP (Shrink Small Outline Package) with 14 pins.
- What are some common applications of the SN74HC04DBRE4?
Common applications include synchronizing inverted clock inputs, debouncing switches, inverting digital signals, and adding stages to counters.
- What are the key features of the SN74HC04DBRE4?
Key features include buffered inputs, wide operating voltage and temperature ranges, high fanout capability, low power consumption, balanced CMOS push-pull outputs, and a clamp diode structure.
- How does the SN74HC04DBRE4 handle input and output protection?
The device includes positive and negative clamping diodes to protect against voltage spikes and noise.
- What are the propagation delay and transition time specifications for the SN74HC04DBRE4?
The propagation delay and transition times vary based on the operating voltage but are typically in the range of 8-120 ns and 6-95 ns, respectively.
- How should unused inputs and outputs be handled in the SN74HC04DBRE4?
Unused inputs must be terminated at VCC or GND, while unused outputs can be left floating.
