Overview
The SN74HC04PWR, produced by Texas Instruments, is a hex inverter integrated circuit that belongs to the 74HC series of CMOS logic devices. This device contains six independent inverters, each performing the Boolean function Y = A in positive logic. It is designed to operate over a wide range of supply voltages from 2 V to 6 V and temperatures from –40°C to +85°C, making it versatile for various digital logic applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply 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) | - | - | 20 | µA |
| Input Capacitance (Ci) | - | - | 10 | pF |
Key Features
- Buffered Inputs: The device has buffered inputs which help in reducing the loading effect on the previous stage.
- Wide Operating Voltage Range: Operates over a wide supply voltage range from 2 V to 6 V.
- Wide Operating Temperature Range: Functions over a temperature range of –40°C to +85°C.
- High Fanout Capability: Supports fanout up to 10 LSTTL loads.
- Low Power Consumption: Significant power reduction compared to LSTTL logic ICs.
- Balanced CMOS Push-Pull Outputs: Outputs are capable of sinking and sourcing similar currents, ensuring balanced operation.
- Clamp Diode Structure: Inputs and outputs have both positive and negative clamping diodes to protect against voltage spikes.
Applications
- Synchronizing Inverted Clock Inputs: Can be used to synchronize clock signals in digital circuits.
- Debouncing Switches: Helps in debouncing switch inputs to eliminate multiple triggers from a single switch press.
- Inverting Digital Signals: Used to invert digital signals in various logic circuits.
- General Logic Circuits: Suitable for use in any application requiring multiple inverters.
Q & A
- What is the SN74HC04PWR used for?
The SN74HC04PWR is used as a hex inverter in digital logic circuits, providing six independent inverters.
- What is the operating voltage range of the SN74HC04PWR?
The device operates over a supply voltage range from 2 V to 6 V.
- What is the operating temperature range of the SN74HC04PWR?
The device functions over a temperature range of –40°C to +85°C.
- How many LSTTL loads can the SN74HC04PWR drive?
The device can support fanout up to 10 LSTTL loads.
- What are the key features of the SN74HC04PWR's outputs?
The outputs are balanced CMOS push-pull outputs, capable of sinking and sourcing similar currents.
- What protection does the SN74HC04PWR have against voltage spikes?
The inputs and outputs have both positive and negative clamping diodes to protect against voltage spikes.
- What are some common applications of the SN74HC04PWR?
Common applications include synchronizing inverted clock inputs, debouncing switches, and inverting digital signals.
- What is the propagation delay of the SN74HC04PWR at 4.5 V supply voltage?
The propagation delay at 4.5 V supply voltage is typically 19 ns.
- What is the maximum input leakage current of the SN74HC04PWR?
The maximum input leakage current is ±1 µA.
- What is the maximum supply current of the SN74HC04PWR?
The maximum supply current is 20 µA.
