54LS154F/883C

Overview

The SN54LS154F/883C is a high-speed low-power Schottky (LS) TTL decoder manufactured by Rochester Electronics. It functions as a 4-line to 16-line decoder/demultiplexer, providing one active-low output for each of the sixteen possible combinations of four binary inputs. The device is characterized for operation over the full military temperature range of -55°C to 125°C. It features two independent enable inputs that must be active for normal operation. The component is housed in a ceramic hermetic package and complies with MIL-PRF-38535 Class Q standards.

Feature Summary

• Provides sixteen distinct active-low outputs corresponding to all binary combinations of four input lines
• Operates reliably across the full military temperature range from -55°C to +125°C
• Incorporates dual enable inputs to control data flow and prevent unintended decoding
• Constructed using high-speed low-power Schottky technology for efficient performance

Applications

• Military aerospace telemetry systems requiring radiation-hardened or high-reliability logic
• Spacecraft command and data handling subsystems
• Harsh environment industrial control interfaces
• High-reliability communication equipment demultiplexing

Procurement Notes

Verify the specific revision level and lot traceability documentation upon receipt. Ensure the ceramic package integrity matches MIL-PRF-38535 Class Q requirements. Confirm that the manufacturer has provided appropriate quality certifications and test reports consistent with the ordered specification. Validate part markings against official datasheet identifiers to ensure authenticity.

Selection Notes

Select this component when a 4-to-16 decoder is required for critical applications operating in extreme temperatures. The LS series offers a balance of speed and power consumption suitable for complex digital systems. Consider the hermetic packaging necessity for environments where standard plastic packages may fail due to moisture or pressure variations.

Part Context

Rochester Electronics specializes in extending the lifecycle of obsolete and hard-to-find semiconductors. This component belongs to the SN54LS family, originally designed for military specifications. The company ensures these parts meet original manufacturer data sheet parameters through rigorous testing and quality control processes aligned with defense industry standards.

Replacement Considerations

Direct substitutes include other SN54LS154 variants meeting MIL-PRF-38535 Class Q criteria. Verify pin compatibility and electrical characteristics before substitution. Generic commercial equivalents do not meet the required temperature range or reliability standards.