SNJ54HC195J Texas Instruments Integrated Circuit (Ceramic Dual-In-Line Packages) In Stock
The SNJ54HC195J is a 4-bit serial/parallel-in to parallel-out shift register from Texas Instruments in the HC/UH logic family, operating at up to 21 MHz with a 50 pF load capacitance. It features J and K-bar serial inputs plus complementary shift-right serial outputs for flexible cascading in digital systems. Packaged in a mil-spec ceramic 16-pin CDIP for high-reliability and extended-temperature applications.
- Manufacturer
- Texas Instruments
- Package
- Ceramic Dual-In-Line Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- SNJ54HC195J 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 SNJ54HC195J?
- 4-bit shift register with J and K-bar serial inputs enabling JKFF-equivalent serial data gating
- Complementary serial shift-right output for direct cascading of multiple devices without external inversion
- Military-grade ceramic 16-pin CDIP package for reliable operation in harsh environment and extended temperature applications
- HC/UH logic family with 21 MHz maximum clock frequency and 50 pF load capacitance compatibility
What is SNJ54HC195J used for?
The SNJ54HC195J suits military, aerospace, and high-reliability industrial systems requiring dependable serial-to-parallel data conversion and shift register operations. Its J and K-bar serial inputs allow JKFF-style data control at each stage, making it useful for sequencer circuits, data serialization, and pipeline delay lines in ruggedized embedded electronics. The ceramic CDIP package also fits temperature-hardened designs for avionics, radar systems, and downhole oil-field instruments operating in extended temperature ranges.
What are the specifications of SNJ54HC195J?
| Pbfree Code | Yes |
| YTEOL | 15 |
| Additional Feature | COMPLEMENTARY SERIAL SHIFT RIGHT OUTPUT; J AND KBAR SERIAL INPUT |
| Count Direction | RIGHT |
| Family | HC/UH |
| JESD-30 Code | R-GDIP-T16 |
| JESD-609 Code | e0 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | PARALLEL IN PARALLEL OUT |
| Max Frequency@Nom-Sup | 21000000Hz |
| Number of Bits | 4 |
| Number of Functions | 1 |
| 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) | 0.16mA |
| Propagation Delay (tpd) | 220ns |
| Qualification Status | Not Qualified |
| Screening Level | MIL-PRF-38535 |
| Supply Voltage-Max (Vsup) | 6V |
| 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 | 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 SNJ54HC195J datasheet?
SNJ54HC195J Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for SNJ54HC195J?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What makes the J and K-bar serial inputs of the SNJ54HC195J useful for shift register designs?
The J and K-bar serial input pair replicates a JK flip-flop truth table at the first stage of the 4-bit shift register, giving the designer set, reset, toggle, and hold functions on the serial input without external gating logic. This allows selective data insertion and masking of incoming bits, which simplifies building programmable delay lines and pattern generators compared to shift registers with a single D-type serial input.
What is the maximum clock frequency of the SNJ54HC195J at a 50 pF load?
The SNJ54HC195J operates at a maximum clock frequency of 21 MHz with a 50 pF load capacitance at the nominal supply voltage. This frequency supports shift rates of 21 million bits per second per 4-bit stage, adequate for parallel data capture from medium-speed buses, serial-to-parallel conversion in embedded controllers, and pipeline data paths in avionics or industrial signal processing boards.
Why would a designer choose the ceramic CDIP package of the SNJ54HC195J over a standard plastic SOIC variant?
The ceramic dual-in-line (CDIP) package offers a hermetic seal that prevents moisture ingress, making it suitable for military and aerospace environments where temperature cycling from -55°C to +125°C and high humidity would degrade plastic-encapsulated devices over time. Ceramic packages also have lower thermal resistance, and the JESD-30 R-GDIP-T16 designation meets MIL-STD-883 screening requirements applicable to defense and space programs.
How can multiple SNJ54HC195J devices be cascaded to form a wider shift register?
Cascading is achieved by connecting the complementary serial output (Q-bar of the last stage) of one SNJ54HC195J to the J input of the next device, and connecting the non-inverted serial output to the K-bar input. This direct-couple connection uses the built-in complementary outputs to drive the JK serial inputs of the downstream device without external inverters, allowing 8-bit, 12-bit, or 16-bit shift registers to be assembled from multiple 4-bit stages sharing a common clock line.
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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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