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Product Detailed Parameters
- Description：IC QUAD 2-INP
- Series：54LS
- Mfr：Texas Instruments
- Package：Bulk
- Logic Type：XNOR (Exclusive NOR)
- Number of Circuits：4
- Number of Inputs：2
- Features：Open Collector
- Voltage - Supply：4.5V ~ 5.5V
- Current - Quiescent (Max)：13 mA
- Current - Output High, Low：100µA, 4mA
- Input Logic Level - Low：0.7V
- Input Logic Level - High：2V
- Max Propagation Delay @ V, Max CL：30ns @ 5V, 15pF
- Operating Temperature：-55°C ~ 125°C
- Mounting Type：Through Hole
- Supplier Device Package：14-CDIP
- Package / Case：14-CDIP (0.300", 7.62mm)
- Grade：-
- Qualification：-
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Overview
The SN54LS266J is a quadruple 2-input Exclusive-NOR gate manufactured by Texas Instruments. It features open-collector outputs and is housed in a 14-pin ceramic dual in-line package (CDIP). The device operates within a military-grade temperature range of -55°C to +125°C.
Feature Summary
- Quadruple 2-input Exclusive-NOR logic functionality
- Open-collector output configuration
- Military-grade wide operating temperature range
Applications
- High-reliability digital logic systems
- Military aerospace circuitry
- Industrial control interfaces
Procurement Notes
Verify the specific suffix 'J' corresponds to the ceramic DIP package and military rating on official datasheets. Confirm lead times and availability directly with authorized distributors, as this component may be subject to limited production runs or long-lead requirements typical of legacy industrial parts.
Selection Notes
Select this part for applications requiring high-noise immunity and robust performance in extreme environments. Ensure the open-collector output topology matches the system's pull-up resistor requirements. Verify that the CDIP footprint fits the target PCB layout constraints.
Part Context
This component belongs to the SN54xx series, designed for military specifications. It differs from commercial SN74xx variants by offering extended temperature ranges and higher reliability standards suitable for defense and space applications.
Replacement Considerations
Cross-reference with other manufacturers' SN54LS266 equivalents. Verify pin compatibility and electrical characteristics before substitution.
