Overview
The SN74HC14NSR, produced by Texas Instruments, is a hex inverter integrated circuit with Schmitt-trigger inputs. This device contains six independent inverters, each performing the Boolean function Y = A in positive logic. The SN74HC14NSR is part of the 74HC series, known for its wide operating voltage range and low power consumption, making it versatile for various electronic systems.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Operating Voltage Range | 2 | - | 6 | V |
| Operating Temperature Range | -40 | - | 85 | °C |
| Propagation Delay (A to Y) at 2V, CL = 50pF | 55 | 125 | 155 | ns |
| Propagation Delay (A to Y) at 4.5V, CL = 50pF | 12 | 25 | 31 | ns |
| Propagation Delay (A to Y) at 6V, CL = 50pF | 11 | 21 | 26 | ns |
| Transition Time (Y) at 2V, CL = 50pF | 38 | 75 | 95 | ns |
| Transition Time (Y) at 4.5V, CL = 50pF | 8 | 15 | 19 | ns |
| Transition Time (Y) at 6V, CL = 50pF | 6 | 13 | 16 | ns |
| Output Drive Current at 5V | -4 | - | 4 | mA |
| Input Current | - | - | 1 | μA |
| Power Consumption (ICC) at 5V | - | - | 20 | μA |
| Package Type | - | - | SO (14-pin) | - |
Key Features
- Wide Operating Voltage Range: 2 V to 6 V, making it suitable for various logic levels.
- Schmitt-Trigger Inputs: Provides noise immunity and hysteresis, allowing the inputs to be held at any valid value without significant power consumption increases.
- Low Power Consumption: Maximum ICC of 20 μA, reducing overall system power requirements.
- High Output Drive Capability: Can drive up to 10 LSTTL loads and source or sink 4 mA at 5-V VCC.
- Balanced CMOS Push-Pull Outputs: Allows the device to sink and source similar currents, ensuring stable output signals.
- Wide Operating Temperature Range: -40°C to 85°C, suitable for a variety of environmental conditions.
Applications
- Synchronize Inverted Clock Inputs: Useful in timing and clock signal management in digital circuits.
- Debounce Switches: Helps in stabilizing switch inputs by rejecting noise and providing a clean signal.
- Invert Digital Signals: Essential in logic circuits where signal inversion is required.
- UPS and White Goods: Used in power supply and control circuits of uninterruptible power supplies and household appliances.
- Computer Peripherals and Printers: Found in various peripheral devices and printers for signal processing and logic operations.
- AC Servo Drives and Motor Drives: Utilized in control circuits for servo motors and other motor drives.
Q & A
- What is the operating voltage range of the SN74HC14NSR?
The operating voltage range is from 2 V to 6 V.
- What is the purpose of Schmitt-trigger inputs in the SN74HC14NSR?
Schmitt-trigger inputs provide noise immunity and hysteresis, allowing the inputs to be held at any valid value without significant power consumption increases.
- How many independent inverters does the SN74HC14NSR contain?
The device contains six independent inverters.
- What is the maximum output drive current at 5V for the SN74HC14NSR?
The maximum output drive current at 5V is ±4 mA.
- What is the typical propagation delay of the SN74HC14NSR at 5V with a 50pF load?
The typical propagation delay is around 21 ns.
- What are some common applications of the SN74HC14NSR?
Common applications include synchronizing inverted clock inputs, debouncing switches, inverting digital signals, and use in UPS, white goods, computer peripherals, and motor drives.
- What is the maximum power consumption (ICC) of the SN74HC14NSR at 5V?
The maximum power consumption (ICC) is 20 μA.
- What is the operating temperature range of the SN74HC14NSR?
The operating temperature range is from -40°C to 85°C.
- How many LSTTL loads can the SN74HC14NSR drive?
The device can drive up to 10 LSTTL loads.
- What package types are available for the SN74HC14NSR?
The SN74HC14NSR is available in a 14-pin SO package among others.
