SNJ54AS74AJ Texas Instruments Integrated Circuit (Ceramic Dual-In-Line Packages) In Stock
The SNJ54AS74AJ is a military-grade dual positive-edge-triggered D flip-flop with preset and clear from Texas Instruments, built with Advanced Schottky logic for 90 MHz operation in a 14-pin ceramic DIP. It delivers reliable single-bit data storage and toggling with preset and clear overrides, operating across the full military temperature range of -55°C to 125°C. Available for defense and aerospace procurement with worldwide distribution.
- Manufacturer
- Texas Instruments
- Package
- Ceramic Dual-In-Line Packages
- Pin Count
- 14
- Lifecycle
- ACTIVE
- Datasheet
- SNJ54AS74AJ Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $16.1300(MOQ 1)
- Temp Range
- -55.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Dual positive-edge-triggered D flip-flops with asynchronous preset and clear for immediate state override
- Advanced Schottky (AS) bipolar logic operating at up to 90 MHz for high-speed sequential logic designs
- Military-grade 14-pin ceramic DIP (JESD-30 R-GDIP-T14) rated from -55°C to 125°C
- 20 mA maximum output sink current (I_ol) for adequate fan-out in military bus-driving applications
- 50 pF load capacitance specification ensuring signal integrity in extreme-temperature board environments
Applications
The SNJ54AS74AJ is designed for military, aerospace, and high-reliability industrial applications requiring fast D-type flip-flop data latching with synchronization and preset/clear control. Common uses include state machine registers, frequency dividers, clock synchronization circuits, and timing delay elements in avionics computers and radar signal processing systems.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Family | AS |
| JESD-30 Code | R-GDIP-T14 |
| JESD-609 Code | e0 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | D FLIP-FLOP |
| Max Frequency@Nom-Sup | 90000000Hz |
| Max I(ol) | 0.02A |
| 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) | 16mA |
| Prop. Delay@Nom-Sup | 10.5ns |
| Propagation Delay (tpd) | 10.5ns |
| Qualification Status | Not Qualified |
| Screening Level | MIL-PRF-38535 |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 4.5V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | NO |
| Technology | TTL |
| 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 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the maximum operating frequency of the SNJ54AS74AJ?
The SNJ54AS74AJ operates at a maximum clock frequency of 90 MHz, enabled by Texas Instruments' Advanced Schottky (AS) bipolar process. This high-speed performance is suitable for fast sequential logic, frequency division, and timing circuits in military and aerospace computing systems requiring reliable edge-triggered data capture at high clock rates.
What control inputs does the SNJ54AS74AJ provide beyond clock and data?
The SNJ54AS74AJ features asynchronous active-low preset (PRE) and clear (CLR) inputs on each of its two flip-flops. These override the clock signal, allowing immediate forced setting or resetting of the flip-flop output regardless of clock state. This is essential for initialization sequences and fault-recovery routines in safety-critical embedded control applications.
What package does the SNJ54AS74AJ come in and what is the operating temperature range?
The SNJ54AS74AJ is housed in a 14-pin ceramic dual-in-line package (CDIP), JESD-30 code R-GDIP-T14, which provides hermetic sealing for use in extreme environmental conditions. It operates from -55°C to 125°C, meeting the full military temperature range required for avionics, defense electronics, and harsh industrial system qualification.
What is the output drive capability of the SNJ54AS74AJ?
The SNJ54AS74AJ can sink a maximum output current (I_ol) of 20 mA per pin, sufficient to drive standard TTL loads and moderate resistive loads directly. The 50 pF load capacitance specification also ensures proper signal integrity when driving PCB traces on multi-layer military circuit boards with typical bus load capacitances.
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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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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $21.2186 | $21.22 |
| 53+ | $18.0358 | $955.90 |
| 112+ | $16.9749 | $1901.19 |
| 10000+ | $16.1300 | $161300.00 |
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