SNJ54BCT125AJ Texas Instruments Integrated Circuit (Ceramic Dual-In-Line Packages) In Stock
The SNJ54BCT125AJ is a military-grade 4-channel bus buffer with 3-state outputs, operating from 4.5V to 5.5V supply, packaged in a 14-pin Ceramic Dual-In-Line (CDIP) form factor. Features BCT/FBT logic family with enable-low control, 64mA output sink current, and 50pF load capacitance support for reliable data bus driving. Rated for -55°C to +125°C temperature range, available from authorized distributors with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Ceramic Dual-In-Line Packages
- Pin Count
- 14
- Lifecycle
- ACTIVE
- Datasheet
- SNJ54BCT125AJ 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 SNJ54BCT125AJ?
- Military-grade 4-channel bus buffer rated for -55°C to +125°C extreme temperature operation
- Enable-low 3-state outputs with 64mA (64mA I(ol)) sink current for robust bus driving
- BCT/FBT logic family in hermetic 14-pin Ceramic DIP package ensuring high reliability in harsh environments
- Supports 50pF load capacitance per channel at 4.5V to 5.5V supply voltage range
What is SNJ54BCT125AJ used for?
The SNJ54BCT125AJ is designed for military and aerospace data bus interface applications requiring reliable unidirectional signal buffering under extreme environmental conditions. It is commonly used in avionics, defense electronics, and space systems where wide temperature range operation from -55°C to +125°C and high noise immunity are critical. The device also suits industrial control systems and ruggedized computing backplanes where 3-state bus control and high output drive current are essential.
What are the specifications of SNJ54BCT125AJ?
| Pbfree Code | Yes |
| YTEOL | 15 |
| Control Type | ENABLE LOW |
| Count Direction | UNIDIRECTIONAL |
| Family | BCT/FBT |
| JESD-30 Code | R-GDIP-T14 |
| JESD-609 Code | e0 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | BUS DRIVER |
| Max I(ol) | 0.064A |
| Number of Bits | 1 |
| Number of Functions | 4 |
| Number of Ports | 2 |
| Output Characteristics | 3-STATE |
| Output Polarity | TRUE |
| 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) | 49mA |
| Prop. Delay@Nom-Sup | 8ns |
| Propagation Delay (tpd) | 8ns |
| 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 |
Where can I find the SNJ54BCT125AJ datasheet?
SNJ54BCT125AJ Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for SNJ54BCT125AJ?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the operating temperature range of the SNJ54BCT125AJ?
The SNJ54BCT125AJ is rated for a military-grade operating temperature range of -55°C to +125°C, making it suitable for aerospace, defense, and other extreme-environment applications where commercial-grade components cannot operate reliably.
What package does the SNJ54BCT125AJ use and how many pins does it have?
The SNJ54BCT125AJ uses a 14-pin Ceramic Dual-In-Line Package (CDIP), which provides hermetic sealing for enhanced reliability in harsh military environments. The ceramic package offers superior thermal stability compared to plastic alternatives.
How does the enable-low control work on the SNJ54BCT125AJ?
The SNJ54BCT125AJ features an active-low output enable (OE) control pin. When OE is driven low, the corresponding buffer output is enabled and drives the bus. When OE is driven high, the output enters a high-impedance (3-state) condition, effectively disconnecting the buffer from the bus and allowing other devices to control the line.
What is the maximum output sink current for the SNJ54BCT125AJ?
The SNJ54BCT125AJ can sink a maximum of 64mA (I(ol) = 0.064A) per output channel. This high sink current capability, combined with BCT/FBT logic family characteristics, ensures it can drive heavily loaded backplane buses with a 50pF load capacitance specification.
What are common applications for the SNJ54BCT125AJ?
The SNJ54BCT125AJ is commonly used in avionics computers, military radar systems, defense communication equipment, and ruggedized industrial controllers. Its unidirectional 4-channel buffering with 3-state outputs makes it ideal for data bus isolation, signal level restoration, and driving long backplane traces in high-reliability systems.
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