CD54ACT20F3A Texas Instruments Integrated Circuit (Ceramic Dual-In-Line Packages) In Stock
The CD54ACT20F3A is a dual 4-input NAND gate from Texas Instruments in the high-speed ACT CMOS logic family, compatible with TTL input levels. It provides two independent 4-input NAND gates with 24 mA output sink current and 50 pF load capacitance in a 14-pin ceramic DIP package. Suitable for high-reliability and military-grade digital logic applications.
- Manufacturer
- Texas Instruments
- Package
- Ceramic Dual-In-Line Packages
- Pin Count
- 14
- Lifecycle
- ACTIVE
- Datasheet
- CD54ACT20F3A 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
- Dual 4-input NAND gates in ACT CMOS family offer high-speed switching with full TTL input voltage level compatibility
- 24 mA output sink current (I_OL) provides strong drive capability for bus loading and multiple fan-out connections
- 14-pin Ceramic DIP package (JESD-30 R-CDIP-T14) delivers enhanced reliability and hermeticity for mil-spec and aerospace environments
- 50 pF load capacitance rating supports operation in high-capacitance bus environments without significant speed degradation
Applications
The CD54ACT20F3A is used in high-reliability military, aerospace, and industrial digital systems requiring NAND gate logic with TTL input compatibility and robust ceramic package hermeticity. Its dual 4-input configuration is valuable in address decoding, chip select generation, and combinational logic reduction circuits where multiple signals must be gated simultaneously. The ACT family's speed and drive strength also make it applicable in bus interface circuits and clock gating networks in rugged embedded systems.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Family | ACT |
| JESD-30 Code | R-CDIP-T14 |
| JESD-609 Code | e0 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | NAND GATE |
| Max I(ol) | 0.024A |
| Number of Functions | 2 |
| Number of Inputs | 4 |
| Package Body Material | CERAMIC, METAL-SEALED COFIRED |
| Package Equivalence Code | DIP14,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Packing Method | TUBE |
| Power Supply Current-Max (ICC) | 0.08mA |
| Prop. Delay@Nom-Sup | 13.5ns |
| Propagation Delay (tpd) | 13.5ns |
| Qualification Status | Not Qualified |
| Schmitt Trigger | NO |
| Screening Level | 38535Q/M;38534H;883B |
| 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 logic family does the CD54ACT20F3A belong to and what is its TTL compatibility?
The CD54ACT20F3A belongs to the ACT (Advanced CMOS TTL-compatible) logic family. ACT devices are CMOS circuits designed with TTL-level input thresholds, meaning they accept standard TTL voltage levels for logic HIGH and LOW inputs. This makes the CD54ACT20F3A directly compatible with TTL outputs without level translation, while retaining the low power consumption benefits of CMOS output stages.
What is the output sink current capability of the CD54ACT20F3A?
The CD54ACT20F3A can sink up to 24 mA of output current (I_OL) per gate output. This is significantly higher than many standard CMOS logic gates, enabling the device to drive multiple TTL or CMOS inputs (high fan-out) or to directly control small indicator LEDs with appropriate series resistors, making it suitable for bus driving applications in high-load digital circuits.
Why does the CD54ACT20F3A use a ceramic DIP package instead of plastic?
The CD54ACT20F3A is housed in a 14-pin Ceramic Dual In-line Package (CDIP), JESD-30 code R-CDIP-T14. Ceramic packages provide hermetic sealing, which protects the die from moisture, corrosive gases, and physical stress far more effectively than plastic encapsulation. This makes ceramic DIP devices essential in military, aerospace, and high-reliability industrial applications where long service life under harsh environmental conditions is required.
What is the load capacitance specification for the CD54ACT20F3A?
The CD54ACT20F3A is characterized at a load capacitance of 50 pF. This specification indicates the capacitive load under which the device's propagation delay and output slew rate parameters are measured and guaranteed. Operating with lower capacitive loads will result in faster switching times, while higher capacitive loads will slow the output transitions. The 50 pF rating is typical for bus environments with multiple parallel inputs.
What does the F3A suffix mean in the CD54ACT20F3A part number?
In Texas Instruments' CD54 series part numbering, the suffix letters indicate the package type and production grade. The 'F' designator refers to the ceramic flat or ceramic DIP package variant, and '3A' typically identifies a specific screening level or flow, often associated with military or high-reliability qualification in accordance with MIL-STD or comparable standards. The CD54 prefix itself denotes the military and aerospace grade version of the CD74 commercial product family.
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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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