SNJ54HC27FK

Inverter Gates Overview

The SNJ54HC27FK is a military-grade triple 3-input NOR gate manufactured by Texas Instruments. It operates within a supply voltage range of 2 V to 6 V and supports an extended temperature range from -55°C to +125°C. The device features buffered inputs, balanced CMOS push-pull outputs, and standard high-impedance CMOS input structures. It is housed in a 20-pin LCCC package with specific pin assignments for three independent channels.

Inverter Gates Feature Summary

• Contains three independent 3-input NOR gates performing the Boolean function Y = A + B + C
• Features balanced CMOS push-pull outputs capable of sinking and sourcing similar currents
• Includes positive and negative clamping diodes on all inputs and outputs

Inverter Gates Applications

• Alarm or tamper detect circuits
• S-R latch configurations

Inverter Gates Procurement Notes

Verify the part number against the official orderable addendum to confirm active production status and material specifications. Ensure compatibility with the specified 20-pin LCCC package dimensions and lead finish requirements. Confirm that the operating environment meets the -55°C to +125°C temperature rating and that power supply constraints align with the absolute maximum ratings defined in the datasheet.

Inverter Gates Selection Notes

Select this component when a military-grade logic solution is required for NOR gate applications. It is suitable for designs needing wide voltage operation and robust thermal performance. Consider the 20-pin LCCC footprint during PCB layout planning. Verify that input signal edge rates comply with recommended transition times to prevent excessive current consumption.

Inverter Gates Part Context

This device belongs to the SNx4HC27 family of triple 3-input NOR gates. It shares functional characteristics with other variants in the series but is distinguished by its specific packaging and extended temperature capabilities. The FK suffix denotes the 20-pin LCCC package configuration used in this specific ordering option.

Inverter Gates Replacement Considerations

SNJ54HC27FK.A

Inverter Gates FAQ

How should unused inputs be handled?

Unused inputs must not be left floating. They should be terminated to either VCC or ground using pull-up or pull-down resistors to prevent undefined operational states.

What is the recommended bypass capacitor value?

A 0.1-μF capacitor is recommended for each VCC terminal, placed physically close to the device to prevent power disturbances.