Overview
The SN74HC04AN, produced by Texas Instruments, is a hex inverter integrated circuit that contains six independent inverters. Each inverter 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 wide operating voltage range from 2 V to 6 V. It also operates over a wide temperature range from –40°C to +85°C, making it suitable for a broad range of environments.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Operating Voltage (VCC) | 2 | - | 6 | V |
| Operating Temperature (TA) | –40 | - | 85 | °C |
| Propagation Delay (tpd) at VCC = 2 V | 45 | 95 | 120 | ns |
| Propagation Delay (tpd) at VCC = 4.5 V | 9 | 19 | 24 | ns |
| Propagation Delay (tpd) at VCC = 6 V | 8 | 16 | 20 | ns |
| Transition Time (tt) at VCC = 2 V | 38 | 75 | 95 | ns |
| Transition Time (tt) at VCC = 4.5 V | 8 | 15 | 19 | ns |
| Transition Time (tt) at VCC = 6 V | 6 | 13 | 16 | ns |
| Input Leakage Current (II) | - | - | ±1 | µA |
| Supply Current (ICC) at VCC = 6 V | - | - | 20 | µA |
| Input Capacitance (Ci) | - | - | 10 | pF |
Key Features
- Buffered inputs
- Wide operating voltage range: 2 V to 6 V
- Wide operating temperature range: –40°C to +85°C
- Supports fanout up to 10 LSTTL loads
- Significant power reduction compared to LSTTL logic ICs
- Balanced CMOS push-pull outputs
- Clamp diode structure for input and output protection
Applications
- Synchronize inverted clock inputs
- Debounce a switch
- Invert a digital signal
- Add an additional stage to a counter with an external flip-flop
- Improve signal integrity in digital circuits
Q & A
- What is the function of the SN74HC04AN? The SN74HC04AN is a hex inverter that performs the Boolean function Y = A in positive logic for each of its six independent inverters.
- What is the operating voltage range of the SN74HC04AN? The operating voltage range is from 2 V to 6 V.
- What is the operating temperature range of the SN74HC04AN? The operating temperature range is from –40°C to +85°C.
- How many LSTTL loads can the SN74HC04AN support? It supports fanout up to 10 LSTTL loads.
- What are the key features of the SN74HC04AN's outputs? The outputs are balanced CMOS push-pull outputs, capable of sinking and sourcing similar currents.
- How do I protect the inputs and outputs of the SN74HC04AN? The device has a clamp diode structure for input and output protection.
- What are some common applications of the SN74HC04AN? Common applications include synchronizing inverted clock inputs, debouncing switches, inverting digital signals, and adding stages to counters.
- How do I ensure proper power supply for the SN74HC04AN? Ensure the supply voltage is within the specified range and can source current equal to the total current required by all outputs plus the maximum supply current.
- What should I do with unused inputs and outputs? Unused inputs must be terminated at VCC or GND, while unused outputs can be left floating.
- How do I calculate the total power consumption of the SN74HC04AN? Total power consumption can be calculated using the information provided in the CMOS Power Consumption and Cpd Calculation sections of the datasheet.
