SNJ54ABT125FK

Buffers, Drivers, Receivers, Transceivers Overview

The SNJ54ABT125FK is a military-grade quadruple bus buffer gate featuring independent line drivers with three-state outputs, housed in a 20-pin LCCC package. It operates within a supply voltage range of 4.5 V to 5.5 V and supports an operating temperature range from -55°C to 125°C. The device provides high-drive outputs capable of sourcing -32 mA and sinking 64 mA. Electrical characteristics include a maximum propagation delay of 6.2 ns at 5 V and 25°C. It incorporates Ioff and power-up three-state circuitry to support hot-insertion applications by preventing damaging current backflow and driver conflicts during power transitions.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Features independent line drivers with three-state outputs for flexible bus management
• Includes Ioff and power-up three-state circuitry to prevent current backflow and driver conflicts
• Provides high-drive output capability for robust signal transmission
• Designed to exceed JEDEC latch-up performance standards

Buffers, Drivers, Receivers, Transceivers Applications

• Military and defense electronic systems requiring extended temperature operation
• Hot-insertion bus architectures utilizing controlled enable signals
• High-speed data buffering in aerospace communication interfaces
• Bus driver circuits in ruggedized industrial control environments

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix FK corresponds to the Leadless Ceramic Chip Carrier (LCCC) package configuration. Confirm that the component meets MIL-PRF-38535 requirements if military qualification is necessary for the application. Ensure compatibility with the 20-pin footprint and verify that the operating temperature range aligns with system thermal constraints.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when military-grade reliability and wide temperature tolerance are required for bus buffering tasks. The ABT technology offers faster switching speeds compared to standard HC or HCT families. Consider the LCCC package for hermetic sealing needs in harsh environments. Evaluate the high-drive output currents against the load capacitance and trace impedance of the target bus structure.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SN54/74ABT125 family of quadruple bus buffers. The SN54 prefix indicates military-grade processing suitable for extreme environmental conditions. The ABT series utilizes Advanced BiCMOS Technology to achieve high speed while maintaining low power consumption. This specific variant is distinguished by its ceramic packaging and extended temperature rating compared to commercial plastic packages.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SNJ54ABT125J (CDIP Package)

Buffers, Drivers, Receivers, Transceivers FAQ

How does the device handle hot-insertion scenarios?

The SNJ54ABT125FK includes dedicated Ioff and power-up three-state circuitry. These features automatically disable the outputs during power-down or power-up phases, preventing damaging current backflow through the device and avoiding driver conflicts on the bus.

What is the recommended method to ensure the high-impedance state during power transitions?

To ensure the high-impedance state during power up or down, the OE (Output Enable) input should be tied to VCC through a pullup resistor. The minimum value of this resistor must be determined by the current-sinking capability of the driving source.