CD54HC74F3A Texas Instruments Integrated Circuit (Ceramic Dual-In-Line Packages) In Stock
The CD54HC74F3A is a dual D-type positive-edge-triggered flip-flop IC from Texas Instruments HC logic family, operating from 2 V to 6 V. Each flip-flop includes set and reset inputs and supports clocking frequencies up to 20 MHz at 50 pF load. Packaged in a ceramic 14-pin DIP for high-reliability applications with worldwide availability.
- Manufacturer
- Texas Instruments
- Package
- Ceramic Dual-In-Line Packages
- Pin Count
- 14
- Lifecycle
- ACTIVE
- Datasheet
- CD54HC74F3A 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 D-type flip-flops with independent set and reset controls per channel
- HC family: wide supply range 2 V to 6 V with CMOS-compatible inputs
- Maximum clock frequency up to 20 MHz at 50 pF load capacitance
- Ceramic DIP-14 package for high-reliability and military-grade environments
- Low quiescent current consumption typical of CMOS logic
Applications
The CD54HC74F3A is well suited for state machine design, data synchronization, and edge-detection circuits in industrial control and military electronics where ceramic packaging is required for thermal stability. It is used in register-based logic designs, divide-by-two frequency dividers, and pipeline data latching within digital signal processing systems.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Family | HC/UH |
| JESD-30 Code | R-GDIP-T14 |
| JESD-609 Code | e0 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | D FLIP-FLOP |
| Max Frequency@Nom-Sup | 20000000Hz |
| Max I(ol) | 0.0052A |
| Number of Bits | 1 |
| Number of Functions | 2 |
| Output Polarity | COMPLEMENTARY |
| Package Body Material | CERAMIC, GLASS-SEALED |
| Package Equivalence Code | DIP14,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Packing Method | TUBE |
| Power Supply Current-Max (ICC) | 0.04mA |
| Prop. Delay@Nom-Sup | 53ns |
| Propagation Delay (tpd) | 265ns |
| Qualification Status | Not Qualified |
| Screening Level | 38535Q/M;38534H;883B |
| Supply Voltage-Max (Vsup) | 6V |
| Supply Voltage-Min (Vsup) | 2V |
| Supply Voltage-Nom (Vsup) | 4.5V |
| 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 |
| Trigger Type | POSITIVE EDGE |
| fmax-Min | 23MHz |
| 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
Compatible alternatives and drop-in replacements for CD54HC74F3A:
D Flip-Flop, HC/UH Series, 2-Func, Positive Edge Triggered, 1-Bit, Complementary Output, CMOS, CDIP14
Frequently Asked Questions
What is the maximum operating frequency of the CD54HC74F3A?
The CD54HC74F3A supports clock frequencies up to 20 MHz when driving a 50 pF load capacitance at nominal supply voltage. This makes it suitable for moderate-speed digital synchronization tasks in industrial and military-grade equipment.
What supply voltage range does the CD54HC74F3A support?
It operates over a supply voltage range of 2 V to 6 V, consistent with the HC logic family standard. This makes it compatible with 3.3 V and 5 V digital logic systems while providing CMOS-level logic thresholds and low power consumption.
Why does the CD54HC74F3A use a ceramic DIP package?
The ceramic DIP-14 package (CDIP) is specified for high-reliability applications requiring extended temperature ranges and resistance to moisture, vibration, and thermal shock. It is the preferred package for military-grade and aerospace electronics where plastic packages may not meet environmental requirements.
Does the CD54HC74F3A have independent set and reset pins?
Yes. Each of the two flip-flop channels has its own active-low set and reset inputs, allowing asynchronous initialization of output states independent of the clock, which is essential for power-on reset and deterministic state initialization in digital circuits.
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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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