SNJ54BCT541FK

Overview

The SNJ54BCT541FK is an octal buffer and line driver featuring three-state outputs, manufactured using state-of-the-art BiCMOS technology. 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 utilizes a 20-pin LCCC (FK) package. Key electrical characteristics include a maximum propagation delay of 8.7 ns at 5 V with a 50 pF load, low input clamp current, and high output drive capability.

Feature Summary

• State-of-the-art BiCMOS design significantly reduces quiescent current consumption
• Inputs and outputs are positioned on opposite sides of the package to facilitate printed-circuit-board layout
• Features two active-low output-enable inputs that force all outputs into a high-impedance state when asserted

Applications

• Driving bus lines in digital systems
• Buffering memory address registers
• High-speed data transmission interfaces requiring isolated control

Procurement Notes

Verify the specific ordering suffix FK corresponds to the Leadless Ceramic Chip Carrier package configuration. Confirm military-grade qualification requirements if applicable, as indicated by the SNJ prefix. Ensure compatibility with MIL-PRF-38535 standards for critical applications where full parameter testing is mandated rather than production processing assumptions.

Selection Notes

Select this component for designs requiring octal buffering with independent dual output enable controls. The BiCMOS technology offers a balance between speed and power consumption suitable for high-density logic applications. Consider the through-hole pinout arrangement when designing PCB footprints to optimize trace routing efficiency compared to standard parallel I/O configurations.

Part Context

This part belongs to the BCT family of octal buffers and drivers. It shares functional similarities with the SN54BCT541 series but is distinguished by its specific ceramic packaging and extended temperature rating. The device serves as a non-inverting buffer, providing signal isolation and amplification for digital logic levels within complex integrated circuits.

Replacement Considerations

SNJ54BCT541J

FAQ

How does the device handle the high-impedance state during power-up?

To ensure the high-impedance state during power-up or power-down, the OE inputs should be tied to VCC through a pullup resistor.

What is the function of the two output-enable inputs?

The 3-state control gate consists of a 2-input AND gate with active-low inputs; if either OE1 or OE2 is high, all eight outputs enter the high-impedance state.