LEOAC14PT STMicroelectronics Integrated Circuit (Small Outline Packages) In Stock
STMicroelectronics LEOAC14PT is a radiation-hardened hex inverter with Schmitt trigger inputs, offering 6 independent channels with 24 mA output drive in a 20-pin TSSOP package. Designed for space and high-reliability applications with enhanced noise immunity. Available in stock worldwide.
- Manufacturer
- STMicroelectronics
- Package
- Small Outline Packages
- Pin Count
- 20
- Lifecycle
- ACTIVE
- Datasheet
- LEOAC14PT Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LEOAC14PT?
- Radiation-hardened AC-family hex inverter with 6 independent Schmitt trigger inputs for robust signal conditioning in harsh radiation environments
- 24 mA output sink current per channel with 50 pF load capacitance rating for driving moderate PCB trace loads
- 20-pin TSSOP package with 0.65 mm pitch enabling compact PCB layout in space-grade and high-reliability electronic assemblies
What is LEOAC14PT used for?
The LEOAC14PT is designed for use in space satellites, launch vehicle avionics, and high-reliability military systems where logic circuitry must survive radiation-induced single-event effects and total ionizing dose. Its 6 Schmitt trigger inverter channels provide clean logic transitions from noisy or slow-slew input signals in command and data handling subsystems. The radiation-hardened plastic TSSOP package allows use in environments where total ionizing dose tolerance is required without ceramic hermetic packages.
What are the specifications of LEOAC14PT?
| YTEOL | 5 |
| Family | AC |
| JESD-30 Code | R-PDSO-G20 |
| 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 | TSSOP20,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, THIN PROFILE, SHRINK PITCH |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | NOT SPECIFIED |
| Prop. Delay@Nom-Sup | 16ns |
| Propagation Delay (tpd) | 16ns |
| Schmitt Trigger | YES |
| Screening Level | AEC-Q100 |
| Supply Voltage-Max (Vsup) | 6V |
| Supply Voltage-Min (Vsup) | 2V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED |
| Total Dose | 50k Rad(Si) V |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
Where can I find the LEOAC14PT datasheet?
LEOAC14PT Datasheet DownloadOfficial datasheet from STMicroelectronics
What are equivalent replacements for LEOAC14PT?
Compatible alternatives and drop-in replacements for LEOAC14PT:
Frequently Asked Questions
How many inverter channels does the LEOAC14PT provide and what is the output drive capability per channel?
The LEOAC14PT provides 6 independent inverter channels, each with a Schmitt trigger input for hysteresis-based noise rejection. Each output can sink up to 24 mA, enabling reliable switching of standard CMOS and TTL logic loads at 50 pF capacitance. This drive strength is sufficient for driving multiple parallel gate inputs or short PCB traces in space-grade digital logic assemblies.
Why does the LEOAC14PT use Schmitt trigger inputs instead of standard CMOS inverter inputs for space applications?
Schmitt trigger inputs in the LEOAC14PT add hysteresis to the switching threshold, typically 0.5 V to 1.5 V depending on supply voltage, preventing false toggling caused by slowly transitioning or noisy signals. In space environments, radiation-induced charge buildup or electromagnetic interference from nearby power converters can cause signal ringing. The Schmitt trigger ensures clean, single-transition output switching even when input signals have rise times slower than 10 ns.
What radiation hardening characteristics make the LEOAC14PT suitable for satellite and space mission electronics?
The LEOAC14PT is manufactured to withstand total ionizing dose levels appropriate for space missions, with radiation-hardened AC-family CMOS logic providing single-event latch-up immunity and reduced single-event upset sensitivity. The plastic TSSOP package is designed to meet space qualification screening requirements, offering a cost-effective alternative to ceramic-packaged rad-hard logic for medium earth orbit missions with total dose requirements in the range of tens of krad.
How does the LEOAC14PT compare to the standard 74AC14 hex Schmitt inverter for use in industrial versus space designs?
The LEOAC14PT shares the same logical function as the commercial 74AC14 — 6 inverters with Schmitt trigger inputs and AC-family switching speed — but is manufactured with radiation-hardened process steps and undergoes 100% lot-level screening for ionizing dose tolerance. The commercial 74AC14 in a standard 14-pin SOIC costs significantly less but lacks radiation tolerance, making the LEOAC14PT the required choice when the design must survive radiation exposure beyond 1 krad in space or nuclear environments.
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About STMicroelectronics
STMicroelectronics is a global semiconductor leader serving customers across the spectrum of electronics applications. ST's products are found in a wide range of applications including automotive, industrial, personal electronics, and communications.
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