SNJ54AHC74J Texas Instruments Integrated Circuit (Ceramic Dual-In-Line Packages) In Stock
SNJ54AHC74J is a dual positive-edge-triggered D-type flip-flop from Texas Instruments in a 14-pin ceramic DIP package. Features complementary Q and Q-bar outputs, asynchronous clear and preset, and 50 pF load capacitance rating. From $8 in stock worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Ceramic Dual-In-Line Packages
- Pin Count
- 14
- Lifecycle
- ACTIVE
- Datasheet
- SNJ54AHC74J 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
What are the key features of SNJ54AHC74J?
- Military-grade 54-series ceramic DIP package rated for -55°C to +125°C operating temperature
- Dual D flip-flops with asynchronous active-low clear and preset for flexible initialization
- Complementary Q and Q-bar outputs enabling both true and inverted data paths
- AHC logic family with 2 V to 5.5 V supply range and high-speed CMOS performance
What is SNJ54AHC74J used for?
SNJ54AHC74J is used in military, aerospace, and high-reliability industrial systems requiring dual D flip-flop register storage with asynchronous reset across a -55°C to +125°C temperature range. Its ceramic DIP package and 54-series qualification make it suitable for avionics data buses, radar signal processors, and rugged embedded controllers where commercial plastic packages cannot meet environmental specifications.
What are the specifications of SNJ54AHC74J?
| Pbfree Code | Yes |
| YTEOL | 15 |
| Family | AHC/VHC/H/U/V |
| JESD-30 Code | R-GDIP-T14 |
| JESD-609 Code | e0 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | D FLIP-FLOP |
| Max I(ol) | 0.008A |
| 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) | 0.02mA |
| Prop. Delay@Nom-Sup | 10.5ns |
| Propagation Delay (tpd) | 17.5ns |
| Qualification Status | Not Qualified |
| Screening Level | MIL-PRF-38535 |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 2V |
| 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 |
| Trigger Type | POSITIVE EDGE |
| fmax-Min | 100MHz |
| Package | Ceramic Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
Where can I find the SNJ54AHC74J datasheet?
SNJ54AHC74J Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for SNJ54AHC74J?
Compatible alternatives and drop-in replacements for SNJ54AHC74J:
D Flip-Flop, AHCT/VHCT/VT Series, 2-Func, Positive Edge Triggered, 1-Bit, Complementary Output, CMOS, CDIP14
Frequently Asked Questions
What is the operating temperature range of SNJ54AHC74J for military system designs?
SNJ54AHC74J is rated for an operating temperature range of -55°C to +125°C in the 54-series military grade, housed in a hermetic 14-pin ceramic DIP package. This wide range makes it suitable for avionics, defense, and space-grade circuit boards where commercial temperature-grade ICs would fail.
What supply voltage range does SNJ54AHC74J support in AHC logic designs?
SNJ54AHC74J operates from a VCC supply of 2 V to 5.5 V in the AHC logic family, providing compatibility with both 3.3 V and 5 V system power rails. Output load capacitance is rated at 50 pF, and maximum output low current is 8 mA for standard AHC drive strength.
How do the asynchronous clear and preset inputs on SNJ54AHC74J benefit state-machine initialization?
The active-low asynchronous clear and preset inputs allow immediate forced reset or set of each flip-flop independent of the clock edge, ensuring deterministic startup states in state machines and register files. This removes the need for extra initialization clock cycles, which is critical in 2-flip-flop dual configurations clocked at high frequencies.
When is SNJ54AHC74J the appropriate choice over a commercial-grade SN74AHC74 flip-flop?
SNJ54AHC74J is selected when the application requires military temperature rating of -55°C to +125°C and a hermetic ceramic 14-pin DIP package that meets MIL-STD qualification. For non-military PCBs operating from 0°C to 70°C, the commercial SN74AHC74 in plastic SOIC or TSSOP packages is more cost-effective and widely available.
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Why Buy from FindMyChip
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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