SNJ54ACT14J Texas Instruments Integrated Circuit (Ceramic Dual-In-Line Packages) In Stock
The SNJ54ACT14J is a military-grade hex Schmitt-trigger inverter in a 14-pin ceramic DIP, featuring six inverting buffers with TTL-compatible ACT inputs operating from 4.5V to 5.5V. With 24mA output sink current and Schmitt-trigger hysteresis, it conditions noisy or slow-edge signals for reliable inversion in avionics, missile, and secure communications military electronics.
- Manufacturer
- Texas Instruments
- Package
- Ceramic Dual-In-Line Packages
- Pin Count
- 14
- Lifecycle
- ACTIVE
- Datasheet
- SNJ54ACT14J 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
- Hex Schmitt-trigger inverters with hysteresis for noise-immune signal inversion
- ACT logic family with TTL-compatible inputs at 5V supply
- Military SNJ54 qualified for -55°C to 125°C temperature range
- 24mA output sink current for driving moderate loads
- Ceramic 14-pin CDIP package for hermetic sealing in harsh environments
- 6 independent inverter channels for maximum flexibility in logic designs
Applications
The SNJ54ACT14J is used in military avionics, missile guidance electronics, and radar signal processing where reliable signal inversion and noise conditioning are required for slow-transitioning or noisy clock, reset, and control signals. It is also applied in power supply supervisory circuits, oscillator designs, and level-shifted signal conditioning in high-reliability defense and aerospace systems.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Family | ACT |
| JESD-30 Code | R-GDIP-T14 |
| JESD-609 Code | e0 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | INVERTER |
| Max I(ol) | 0.024A |
| Number of Functions | 6 |
| Number of Inputs | 1 |
| Package Body Material | CERAMIC, GLASS-SEALED |
| Package Equivalence Code | DIP14,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Power Supply Current-Max (ICC) | 0.02mA |
| Prop. Delay@Nom-Sup | 14ns |
| Propagation Delay (tpd) | 14ns |
| Qualification Status | Not Qualified |
| Schmitt Trigger | YES |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 4.5V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | NO |
| Technology | CMOS |
| Temperature Grade | MILITARY |
| Terminal Finish | Tin/Lead (Sn/Pb) |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Package | Ceramic Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the SNJ54ACT14J and what are its primary applications?
The SNJ54ACT14J is a military-grade hex Schmitt-trigger inverter from Texas Instruments, housed in a 14-pin ceramic DIP package. It contains six independent inverting buffers with Schmitt-trigger inputs compatible with TTL logic levels. Its primary applications include signal conditioning in military avionics, missile guidance systems, and secure communications equipment where reliable inversion of noisy or slow-edge signals is critical.
What voltage range does the SNJ54ACT14J operate over, and what output drive capability does it provide?
The SNJ54ACT14J operates from a supply voltage range of 4.5V to 5.5V, making it compatible with standard 5V TTL and ACT logic systems. It provides an output sink current of 24mA (max I(ol)), allowing it to drive standard logic loads reliably. The Schmitt-trigger hysteresis ensures clean output transitions even when input signals have slow edges or significant noise.
Why is a ceramic package used for the SNJ54ACT14J instead of a plastic package?
The ceramic dual-in-line package (CERDIP) used in the SNJ54ACT14J is selected for military-grade applications because ceramic offers superior hermetic sealing, higher reliability, and better performance across the extended military temperature range compared to plastic packages. Ceramic packages are qualified to stringent MIL-spec standards, making the SNJ54ACT14J suitable for harsh environments such as aerospace, defense electronics, and other applications demanding long-term reliability.
How does the Schmitt-trigger input of the SNJ54ACT14J improve signal integrity?
The Schmitt-trigger input provides hysteresis, meaning the switching threshold for a rising input signal is higher than the threshold for a falling input signal. This hysteresis prevents multiple output transitions caused by slowly changing or noisy input signals. As a result, the SNJ54ACT14J produces clean, stable output pulses even when the input signal has poor waveform quality, making it ideal for conditioning signals from mechanical switches, sensors, or long cable runs.
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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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