SNJ54F20FK

Inverter Gates Overview

The SNJ54F20FK is a military-grade dual 4-input positive-NAND gate manufactured by Texas Instruments. It operates within the full military temperature range of -55 °C to 125 °C and utilizes a 20-pin Leadless Ceramic Chip Carrier (LCCC) package. The device functions according to Boolean logic Y = A • B • C • D. Electrical specifications include a supply voltage range of 4.5 V to 5.5 V, high-level output current of -1 mA, and low-level output current of 20 mA. Switching characteristics at VCC = 5 V with CL = 50 pF show typical propagation delays of 3.3 ns for tPLH and 2.8 ns for tPHL.

Inverter Gates Feature Summary

• Contains two independent 4-input NAND gates performing positive logic Boolean operations
• Hermetically sealed ceramic construction suitable for harsh environments
• Qualified for full military temperature range operation from -55 °C to 125 °C

Inverter Gates Applications

• Military and defense electronic systems
• Aerospace computing and control circuits
• High-reliability digital logic processing

Inverter Gates Procurement Notes

Verify that the component matches the specific SNJ54F20FK part number and LCCC-20 package configuration. Confirm the manufacturer is Texas Instruments or an authorized source. Ensure the device meets QML certification requirements if specified for your application. Check for any additional markings such as 5962-9758401Q2A which may indicate specific qualification levels.

Inverter Gates Selection Notes

Select this component when dual 4-input NAND functionality is required in extreme temperature environments. The LCCC package provides hermetic sealing essential for aerospace and military applications. Compare against other SN54F series devices if different input counts or logic types are needed. Ensure the design accommodates the 20-pin footprint and pitch dimensions specified in the datasheet.

Inverter Gates Part Context

This device belongs to the SN54F series of fast logic gates produced by Texas Instruments. The 'SNJ' prefix indicates a military-grade ceramic dual in-line or chip carrier package variant. The 'FK' suffix specifically denotes the 20-pin leadless ceramic chip carrier package. This series is designed for high-speed digital applications requiring robust performance under varying environmental conditions.

Inverter Gates Replacement Considerations

Direct replacements include SNJ54F20J (CDIP package) and SNJ54F20W (CFP package). Cross-reference with 5962-9758401Q2A for equivalent military specification parts. Verify pin compatibility and package dimensions before substitution.