SNJ54BCT126AJ Texas Instruments Integrated Circuit (Ceramic Dual-In-Line Packages) In Stock
The SNJ54BCT126AJ is a military-grade 4-channel bus buffer from Texas Instruments' BCT/FBT logic family with TTL-compatible CMOS inputs and 3-state outputs. It features 48 mA output drive, active-high enable control per channel pair, and operates across the full -55°C to +125°C military temperature range. Housed in a 14-pin ceramic CDIP package for high-reliability defense systems.
- Manufacturer
- Texas Instruments
- Package
- Ceramic Dual-In-Line Packages
- Pin Count
- 14
- Lifecycle
- ACTIVE
- Datasheet
- SNJ54BCT126AJ 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
- 4-channel unidirectional bus buffer with 3-state outputs for bus multiplexing
- TTL-compatible CMOS inputs in BCT/FBT logic family for mixed-technology interfacing
- 48 mA output drive (IOL) for reliable bus loading in military backplane designs
- Active-high enable control for each pair of buffer channels
- Military temperature range of -55°C to +125°C
- 14-pin ceramic CDIP package with hermetic sealing for MIL-grade long-term reliability
Applications
The SNJ54BCT126AJ is used in military processor-to-memory bus interfaces, avionics data bus isolation stages, and defense VMEbus card edge buffering where CMOS input levels must drive TTL-compatible buses with 3-state isolation and MIL-grade temperature coverage. It is also deployed in space satellite electronics and defense communications switching matrices where hermetic ceramic packaging and guaranteed -55°C to +125°C operation are design requirements for mission-critical long-life systems.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Control Type | ENABLE HIGH |
| Count Direction | UNIDIRECTIONAL |
| Family | BCT/FBT |
| JESD-30 Code | R-CDIP-T14 |
| JESD-609 Code | e0 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | BUS DRIVER |
| Max I(ol) | 0.048A |
| Number of Bits | 1 |
| Number of Functions | 4 |
| Number of Ports | 2 |
| Output Characteristics | 3-STATE |
| Output Polarity | TRUE |
| Package Body Material | CERAMIC, METAL-SEALED COFIRED |
| Package Equivalence Code | DIP14,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Packing Method | TUBE |
| Power Supply Current-Max (ICC) | 51mA |
| Prop. Delay@Nom-Sup | 7.7ns |
| Propagation Delay (tpd) | 7.7ns |
| 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 | BICMOS |
| Temperature Grade | MILITARY |
| Terminal Finish | Tin/Lead (Sn/Pb) |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| 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 SNJ54BCT126AJ:
Rochester Electronics LLC BCT/FBT SERIES, QUAD 1-BIT DRIVER, TRUE OUTPUT, CDIP14, 0.300 INCH, CERAMIC, DIP-14
Frequently Asked Questions
What is the output drive current of the SNJ54BCT126AJ?
The SNJ54BCT126AJ provides a maximum IOL of 48 mA output sink current, which is significantly higher than standard CMOS logic outputs. This high drive enables reliable bus driving with multiple TTL loads on the output, making it suitable for backplane bus buffering in military VMEbus and custom defense computing architectures.
What is the temperature range of the SNJ54BCT126AJ?
The SNJ54BCT126AJ is rated for the full military temperature range of -55°C to +125°C ambient, meeting MIL-STD-883 requirements. This ensures reliable 3-state bus buffer operation in extreme environments including avionics systems exposed to cold high-altitude temperatures and vehicle electronics in hot engine-bay or desert deployment conditions.
What package is the SNJ54BCT126AJ available in?
The SNJ54BCT126AJ is housed in a 14-pin CDIP (Ceramic Dual-In-Line Package) designated JESD-30 R-CDIP-T14, with J suffix indicating the ceramic package style. The hermetic ceramic package provides maximum moisture exclusion and mechanical robustness required for MIL-STD-883 compliance in long-life defense and space electronic assemblies.
How many channels does the SNJ54BCT126AJ buffer, and how are they enabled?
The SNJ54BCT126AJ contains four independent unidirectional buffer channels arranged in two pairs, each pair sharing an active-high output-enable pin. When the enable pin is high, the corresponding pair of buffers passes its input signal to the output in 3-state drive. When the enable is low, those outputs go to the high-impedance (Hi-Z) state, allowing bus sharing between multiple drivers.
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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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