The 74HC14 is a highspeed CMOS logic IC containing six independent inverting buffers with Schmitt trigger inputs. This device provides clean, jitterfree output transitions even when input signals have slow edges or significant noise. The built-in hysteresis ensures reliable performance in noisy environments, making it an indispensable component for signal conditioning, waveform shaping, and oscillator circuits.
| Parameter | Value |
|---|---|
| Supply Voltage (VCC) | 2.0V to 6.0V |
| Input Voltage | 0V to VCC |
| Output Current (High/Low) | ±5.2mA (at 6V) |
| Propagation Delay | 13ns typical at 5V |
| Hysteresis Voltage | 0.4V to 1.2V (at 5V) |
| Quiescent Current | 2µA typical (at 6V) |
| Operating Temperature | -40°C to +125°C |
| Package Types | DIP14, SOIC14, TSSOP-14 |
| Number of Inverters | 6 (hex buffer with Schmitt trigger) |
= Pin Configuration (DIP14/SOIC14/TSSOP-14) =
| Pin | Name | Function |
|---|---|---|
| 1 | 1A | Inverter 1 Input |
| 2 | 1Y | Inverter 1 Output |
| 3 | 2A | Inverter 2 Input |
| 4 | 2Y | Inverter 2 Output |
| 5 | 3A | Inverter 3 Input |
| 6 | 3Y | Inverter 3 Output |
| 7 | GND | Ground (0V) |
| 8 | 4Y | Inverter 4 Output |
| 9 | 4A | Inverter 4 Input |
| 10 | 5Y | Inverter 5 Output |
| 11 | 5A | Inverter 5 Input |
| 12 | 6Y | Inverter 6 Output |
| 13 | 6A | Inverter 6 Input |
| 14 | VCC | Supply Voltage (2V to 6V) |
= Truth Table (Per Inverter) =
| Input | Output |
|---|---|
| LOW (Below Vt-) | HIGH |
| HIGH (Above Vt+) | LOW |
> Schmitt trigger ensures outputs transition only when input crosses well-defined thresholds
Schmitt Trigger Inputs - Provides excellent noise immunity and slow edge acceptance
Six Independent Inverters Multiple inverters in a single 14pin package
Wide Supply Range - Operates from 2V to 6V for flexible system integration
Low Power Consumption 2µA quiescent current ideal for battery-powered designs
High Noise Immunity - Hysteresis eliminates false triggering in noisy environments
Compatible Inputs - Accepts both CMOS and TTL drive levels
√ Industry-standard 74HC14 pinout for easy replacement
√ Low power consumption - 2µA typical quiescent current
√ Fully tested and guaranteed functional