SN74HC14APW-P Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
SN74HC14APW-P is a hex Schmitt-trigger inverter from Texas Instruments, providing 6 independent inverting channels with hysteresis for improved noise immunity. It operates from a 2 V to 6 V supply and supports input hysteresis of approximately 0.9 V at 5 V, making it effective for signal conditioning on slow or noisy waveforms. Housed in a 14-pin TSSOP package, it is used in oscillator circuits, switch debouncing, and signal clean-up applications.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 14
- Lifecycle
- ACTIVE
- Datasheet
- SN74HC14APW-P Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of SN74HC14APW-P?
- 6-channel hex inverter with Schmitt-trigger inputs for noise rejection
- Supply voltage range: 2 V to 6 V compatible with 3.3 V and 5 V systems
- Input hysteresis approximately 0.9 V at 5 V VCC preventing false switching
- High-speed CMOS process with propagation delay under 10 ns at 5 V
- Schmitt-trigger action enables RC oscillator and monostable multivibrator circuits
- 14-pin TSSOP package for compact PCB designs with multiple inversion channels
What is SN74HC14APW-P used for?
The SN74HC14APW-P is widely used in digital logic systems for cleaning up noisy or slowly transitioning input signals before feeding logic gates or MCU I/O pins. It serves as the inverting buffer element in RC oscillator circuits where the Schmitt-trigger threshold produces stable square-wave output frequencies. Switch and button debouncing circuits rely on its hysteresis to generate clean single pulses from mechanically bouncing contacts in industrial and consumer control panels.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the SN74HC14APW-P datasheet?
SN74HC14APW-P Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for SN74HC14APW-P?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How much hysteresis does the SN74HC14APW-P provide, and why does that matter for slow input signals?
At a 5 V supply the SN74HC14APW-P provides approximately 0.9 V of input hysteresis. This means the output only switches when the input crosses distinct high and low voltage thresholds separated by 0.9 V, preventing multiple false transitions when an input signal rises or falls slowly over several microseconds, such as from an RC network or a sensor with a slow slew rate.
Can the SN74HC14APW-P be used to build an RC oscillator, and what component values are typically required?
Yes, a single inverter channel and an external resistor-capacitor network form a relaxation oscillator. A resistor in the range of 1 kΩ to 100 kΩ combined with a capacitor of 1 nF to 100 nF sets the oscillation frequency from roughly 1 kHz to several hundred kHz, depending on the exact supply voltage and threshold voltages. The remaining 5 inverter channels can buffer or invert the generated clock signal.
What supply voltage range does the SN74HC14APW-P support, and is it compatible with both 3.3 V and 5 V logic boards?
The SN74HC14APW-P operates from 2 V to 6 V, covering both 3.3 V and 5 V logic domains. When powered from 3.3 V it delivers logic-high outputs at the 3.3 V rail, making its outputs directly readable by 3.3 V MCU inputs. This makes it a convenient single-part solution for debouncing or signal conditioning on mixed-voltage boards without any level-shifting.
How does the SN74HC14APW-P compare to a standard hex inverter like 74HC04 for noisy digital inputs?
The standard 74HC04 has no defined hysteresis and will oscillate or produce glitches when the input is near the switching threshold. The SN74HC14APW-P adds approximately 0.9 V of hysteresis at 5 V, which suppresses noise spikes smaller than the hysteresis window and ensures a clean single transition. For signals with more than 100 mV of noise riding on the input, the Schmitt-trigger variant is strongly preferred over the 74HC04 to avoid logic errors.
How many independent channels does the SN74HC14APW-P contain, and can they be used independently on separate signal paths?
The device contains 6 independent inverting channels, each with its own input and output pins sharing a common VCC and GND. All 6 channels can drive separate signal paths simultaneously; for example, 3 channels can debounce 3 mechanical switches while the other 3 clean up 3 sensor digital outputs, all within the same 14-pin TSSOP package drawing less than 80 µA quiescent current.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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