SN74HC14N3 Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
SN74HC14N3 is a hex Schmitt-trigger inverter from Texas Instruments in a 14-pin DIP package. Provides 6 single-input inverting channels with hysteresis for noise-immune signal conditioning at 50 pF load capacitance. Available in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 14
- Lifecycle
- OBSOLETE
- Datasheet
- SN74HC14N3 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 6-channel Schmitt-trigger inverter with built-in hysteresis enabling clean digital transitions from slow or noisy analog input signals
- HC/UH family logic with 50 pF load capacitance rating suited for standard CMOS and TTL-compatible signal conditioning
- 14-pin DIP (R-PDIP-T14) through-hole package for easy prototyping and breadboard integration without SMD tooling
Applications
SN74HC14N3 is widely used for debouncing mechanical switch inputs, reshaping degraded clock signals, and converting slow analog transitions into clean digital pulses in microcontroller and FPGA systems. Its Schmitt-trigger hysteresis makes it particularly effective in noisy industrial environments where signal integrity on long PCB traces or cables is compromised. The device also serves as an oscillator building block when combined with an external RC network.
Specifications
| Pbfree Code | No |
| YTEOL | 0 |
| Family | HC/UH |
| JESD-30 Code | R-PDIP-T14 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | INVERTER |
| Max I(ol) | 0.004A |
| Number of Functions | 6 |
| Number of Inputs | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | DIP14,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Peak Reflow Temperature (Cel) | NOT SPECIFIED |
| Prop. Delay@Nom-Sup | 31ns |
| Propagation Delay (tpd) | 155ns |
| Qualification Status | Not Qualified |
| Schmitt Trigger | YES |
| Supply Voltage-Max (Vsup) | 6V |
| Supply Voltage-Min (Vsup) | 2V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | NO |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| HTS Code | 8542.39.00.60 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for SN74HC14N3:
Frequently Asked Questions
How does Schmitt-trigger hysteresis in SN74HC14N3 improve signal quality compared to standard inverters?
The SN74HC14N3 uses internal hysteresis so the input threshold voltage for a high-to-low transition differs from the low-to-high threshold. This prevents multiple output transitions when a slow or noisy input crosses the switching point, a feature absent in standard HC inverters without Schmitt inputs. The result is clean, glitch-free digital outputs even with 50 pF capacitive loads.
What RC oscillator configurations can SN74HC14N3 support for low-cost clock generation?
A single SN74HC14N3 Schmitt inverter stage combined with a resistor and capacitor forms a relaxation oscillator with a frequency determined by the RC time constant. Typical configurations produce oscillation frequencies from a few kHz to several MHz, providing a simple low-cost alternative to crystal oscillators for non-critical timing in embedded systems.
In a 5 V industrial I/O board, what sink current limitation should designers account for when using SN74HC14N3?
The SN74HC14N3 output sink current is rated at only 4 mA maximum (0.004 A), which is lower than ACT or AHC family parts. Designers driving LEDs or bus lines beyond 4 mA must add a buffer or use a higher-drive logic family. For signal-level fan-out within HC logic systems and 50 pF loads, the 4 mA sink is typically sufficient.
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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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