CD54HCT138F

Signal Switches, Multiplexers, Decoders Overview

The CD54HCT138F is a high-speed CMOS logic decoder/driver belonging to the HCT series. It features inverted outputs and utilizes a ceramic glass-sealed DIP-16 package. The device operates within a voltage range of 4.5 V to 5.5 V and supports an operating temperature range from -55 °C to +125 °C. It includes three enable inputs for flexible control. The component is classified as a military-rated logic circuit with a maximum load capacitance of 50 pF.

Signal Switches, Multiplexers, Decoders Feature Summary

• High-speed CMOS technology compatible with TTL logic levels
• Military-grade reliability with ceramic glass-sealed packaging
• Inverted output configuration for specific decoding requirements
• Triple enable input capability for complex system control

Signal Switches, Multiplexers, Decoders Applications

• Military aerospace electronic systems requiring radiation-hardened or high-reliability logic
• Industrial control environments with extreme temperature variations
• High-speed data routing and address decoding in defense applications

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the manufacturer origin, as Harris produced early versions while Texas Instruments also manufactures this family. Confirm the specific suffix 'F' indicates the correct ceramic DIP-16 package variant. Ensure the datasheet matches the required military specifications and RoHS status if applicable to your procurement standards. Cross-reference part numbers carefully to distinguish between HC and HCT series electrical characteristics.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when military-grade environmental tolerance and high-speed CMOS performance are required simultaneously. The HCT series ensures compatibility with standard TTL inputs while offering lower power consumption than older bipolar technologies. The ceramic package provides superior protection against moisture and mechanical stress compared to plastic variants. Verify that the inverted output polarity aligns with the target circuit design before finalizing the selection.

Signal Switches, Multiplexers, Decoders Part Context

This component belongs to the broader CD54HCT138 family of decoders. Related parts include the CD54HCT138F3A, which shares similar functional characteristics but may differ in specific manufacturing lot details or minor parameter tolerances. The CD54HCT series generally offers improved switching speeds over standard HC devices while maintaining pin-out compatibility with legacy designs.