CD74AC14M Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The CD74AC14M is a CMOS hex Schmitt trigger inverter IC featuring 6 independent inverting elements with hysteresis inputs, operating from 1.5 V to 5.5 V supply with 24 mA output sink current in a 14-pin SOIC package. The Schmitt trigger inputs provide noise immunity for slow or noisy input signals. Available from stock worldwide at competitive prices.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 14
- Lifecycle
- OBSOLETE
- Datasheet
- CD74AC14M Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -55.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Six Schmitt trigger inverter elements with built-in hysteresis for robust noise-immune signal conditioning of slow-rising or noisy input waveforms
- Wide supply voltage range of 1.5 V to 5.5 V covering 1.8 V, 3.3 V, and 5 V logic rails for broad system compatibility
- 24 mA output sink current per channel enabling direct drive of low-power LEDs, logic gates, and bus lines without external buffers
Applications
The CD74AC14M is used for debouncing mechanical switches and buttons, where its Schmitt trigger hysteresis eliminates false triggering from contact bounce and slow signal transitions. It serves as a signal squaring circuit to reshape degraded or noisy digital signals on long PCB traces, cable interfaces, and clock distribution networks. The device is also applied in oscillator circuits, RC relaxation oscillators, and power-on reset generators in microcontroller and FPGA-based embedded systems.
Specifications
| YTEOL | 0 |
| Family | AC |
| JESD-30 Code | R-PDSO-G14 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | INVERTER |
| Max I(ol) | 0.024A |
| Number of Functions | 6 |
| Number of Inputs | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP14,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TUBE |
| Peak Reflow Temperature (Cel) | 260 |
| Power Supply Current-Max (ICC) | 0.08mA |
| Prop. Delay@Nom-Sup | 10.5ns |
| Propagation Delay (tpd) | 10.5ns |
| Qualification Status | Not Qualified |
| Schmitt Trigger | YES |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 1.5V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | MILITARY |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.01 |
| Country of Origin | Malaysia |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for CD74AC14M:
Frequently Asked Questions
What is the benefit of Schmitt trigger inputs in the CD74AC14M?
Schmitt trigger inputs add hysteresis to the switching threshold, meaning the input must cross a higher voltage to switch from low-to-high and a lower voltage to switch from high-to-low. This prevents multiple output transitions from slow-rising signals, noise, or contact bounce, producing clean digital output edges from noisy or degraded inputs.
What is the supply voltage range of the CD74AC14M?
The CD74AC14M operates from 1.5 V to 5.5 V, making it compatible with modern 1.8 V and 3.3 V microcontroller I/O as well as traditional 5 V TTL-level systems, allowing it to be used across a wide range of digital logic families and supply configurations.
How much output current can the CD74AC14M sink?
Each output of the CD74AC14M can sink up to 24 mA, which is sufficient to directly drive standard logic inputs, low-current LEDs through appropriate resistors, or capacitive bus loads at the rated 50 pF load capacitance without requiring external buffer transistors.
What package does the CD74AC14M use?
The CD74AC14M is housed in a 14-pin SOIC package with plastic/epoxy body construction (JESD-30 code R-PDSO-G14). The surface-mount format is compatible with standard automated PCB assembly and occupies minimal board area compared to through-hole DIP alternatives.
Can the CD74AC14M be used to build an RC oscillator?
Yes. Because the Schmitt trigger inputs provide well-defined switching thresholds with hysteresis, a single inverter element with an RC network in feedback will oscillate at a frequency determined approximately by f = 1/(1.2 × R × C), making it a simple low-cost clock source for non-critical timing applications.
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