SNJ54173J Texas Instruments Integrated Circuit (Ceramic Dual-In-Line Packages) In Stock
The SNJ54173J is a military-grade 4-bit D-type register with tri-state outputs from Texas Instruments in a 16-pin ceramic DIP package. Key specs: -55°C to 125°C operating range, 25 MHz max clock, 16 mA output sink current with dual output enable. Available from stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Ceramic Dual-In-Line Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- SNJ54173J Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $6.9960(MOQ 1)
- 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 SNJ54173J?
- 4-bit D-type register with 3-state outputs and dual output enable for direct bus driving in military TTL systems
- Military temperature rating of -55°C to 125°C in hermetic ceramic DIP-16 package under SNJ54 qualification
- 25 MHz maximum clock frequency with hold mode and 50 pF specified load capacitance for reliable bus interface timing
What is SNJ54173J used for?
The SNJ54173J is deployed in military, aerospace, and defense digital systems requiring a reliable 4-bit parallel register that can drive 3-state data buses with dual enable control. Its hold mode enables latching of bus data independently of the clock, useful in memory interface and pipeline register designs. The SNJ54 qualification and hermetic CDIP-16 package ensure long-term operational reliability in avionics, radar, and ground-vehicle electronics across extreme temperature environments.
What are the specifications of SNJ54173J?
| Pbfree Code | Yes |
| YTEOL | 15 |
| Additional Feature | WITH HOLD MODE; WITH DUAL OUTPUT ENABLE; DISABLE TIME CL = 5PF |
| Family | TTL/H/L |
| JESD-30 Code | R-GDIP-T16 |
| JESD-609 Code | e0 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | D FLIP-FLOP |
| Max Frequency@Nom-Sup | 25000000Hz |
| Max I(ol) | 0.016A |
| Number of Bits | 4 |
| Number of Functions | 1 |
| Output Characteristics | 3-STATE |
| Output Polarity | TRUE |
| Package Body Material | CERAMIC, GLASS-SEALED |
| Package Equivalence Code | DIP16,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Packing Method | TUBE |
| Power Supply Current-Max (ICC) | 72mA |
| Prop. Delay@Nom-Sup | 43ns |
| Propagation Delay (tpd) | 43ns |
| 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 | 25MHz |
| 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 SNJ54173J datasheet?
SNJ54173J Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for SNJ54173J?
Compatible alternatives and drop-in replacements for SNJ54173J:
Flip-Flop, TTL/H/L Series, 1-Func, Positive Edge Triggered, 4-Bit, True Output, TTL, CDIP16
Frequently Asked Questions
What maximum clock frequency does SNJ54173J support for 4-bit register clocking in a 5 V TTL bus design?
The SNJ54173J supports a maximum clock frequency of 25 MHz at its nominal supply voltage, making it capable of handling high-speed parallel data latching in 5 V TTL bus systems. With a 50 pF rated load capacitance and 16 mA output sink current, it can directly drive TTL bus lines without additional buffering in most standard designs.
How does the dual output enable and 3-state output feature of SNJ54173J benefit multi-device bus sharing?
The dual output enable inputs on SNJ54173J allow two independent control signals to gate the tri-state outputs, so the 4-bit register can be disconnected from a shared data bus with precise timing control using either enable line. This prevents bus contention when multiple 4-bit registers share a common 4-wire data bus, which is essential in memory address registers and multi-processor bus arbitration circuits operating at up to 25 MHz.
Why is the hermetic ceramic DIP-16 package of SNJ54173J critical for long-life avionics applications?
The hermetic ceramic DIP-16 (CDIP-16) package of SNJ54173J seals the silicon die against moisture, salt atmosphere, and mechanical vibration per MIL-STD-883 requirements, enabling the device to survive 20+ year operational lifetimes in avionics racks and satellite subsystems. Plastic packages absorb moisture over time, leading to parametric drift and eventual failure at the -55°C to 125°C extremes that the SNJ54173J is designed to withstand.
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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.
More from Texas Instruments
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $10.4940 | $10.49 |
| 4+ | $7.6956 | $30.78 |
| 11+ | $6.9960 | $76.96 |
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