Does your application contains slow or noisy signals? Take: Schmitt trigger
The 74LVC14A provides six independent schmitt trigger inverter buffers. The device is designed for operation with a power supply range of 1.65V to 5.5V. The inputs are tolerant to 5.5V allowing this device to be used in a mixed voltage environment. The device is fully specified for partial power down applications using IOFF. The IOFF circuitry disables the output preventing damaging current backflow when the device is powered down.
Applications:
- Voltage Level Shifting
- General Purpose Logic
- Power Down Signal Isolation
- Wide array of products such as:
- PCs, networking, notebooks, ultrabooks, netbooks
- Computer peripherals, hard drives, CD/DVD ROM
- TV, DVD, DVR, set top box
Features:
- Wide Supply Voltage Range from 1.65V to 5.5V
- Outputs sink or source 24mA at VCC = 3.3V
- CMOS low power consumption
- IOFF Supports Partial-Power-Down Mode Operation
- Inputs or outputs accept up to 5.5V
- Inputs can be driven by 3.3 V or 5.5V allowing for voltage translation applications.
- ESD Protection Exceeds JESD 22 200-V Machine Model (A115-A) 2000-V Human Body Model (A114-A)
- Exceeds 1000-V Charged Device Model (C101C)
Removing Noise:
Detecting the state of a digital signal can be difficult if the signal contains noise. A Schmitt trigger is a gate which uses hysteresis to remove noise from a signal.
Vilmax and Vihmin, for a Schmitt trigger, there are two separate voltages. When the output is low, the input has to go above Von before the output will go high, and when the output is high, the input has to go below Voff before the output will go low. The farther apart Von and Voff are, the more noise immunity is provided
