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Product Detailed Parameters
- Description：IC GATE AND/OR INVERTER
- Series：*
- Mfr：Rochester Electronics, LLC
- Package：Bulk
- Logic Type：-
- Number of Circuits：-
- Number of Inputs：-
- Features：-
- Voltage - Supply：-
- Current - Quiescent (Max)：-
- Current - Output High, Low：-
- Input Logic Level - Low：-
- Input Logic Level - High：-
- Max Propagation Delay @ V, Max CL：-
- Operating Temperature：-
- Mounting Type：-
- Supplier Device Package：-
- Package / Case：-
- Grade：-
- Qualification：-
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Overview
The 54L55W/B is a military-grade AND-OR-Invert (AOI) logic gate manufactured by Rochester Electronics. It implements the Boolean function Y=ABCD+EFGH, featuring two independent four-input AND gates feeding a single OR-invert stage. The device is characterized for operation over the full military temperature range of -55°C to 125°C. As part of the SN54L55 family, it utilizes low-power Schottky (L) technology to balance switching speed with reduced power consumption compared to standard H-series counterparts. The component is supplied in a ceramic W package suitable for high-reliability applications.
Feature Summary
- Implements a 2-wide 4-input AND-OR-Invert logic function
- Qualified for full military temperature range (-55°C to 125°C)
- Utilizes low-power Schottky semiconductor technology
Applications
- Military avionics and defense systems requiring radiation-hardened or high-reliability logic
- Spacecraft electronic control units operating in extreme thermal environments
- High-reliability industrial automation controllers
Procurement Notes
Verify the specific suffix 'W' against the manufacturer's official datasheet to confirm the exact package style and lead frame material. Ensure the lot traceability meets MIL-PRF-38535 Class Q or V requirements if intended for critical mission hardware. Confirm that the 'B' suffix aligns with the required burn-in or screening specifications for your application.
Selection Notes
Select this component when a fixed 2-wide 4-input AOI function is required within a military temperature envelope. Compare propagation delay and power dissipation against the SN54H55 and SN54LS55 variants to ensure compatibility with system timing budgets. Verify that the ceramic package dimensions fit the available board space and mounting constraints.
Part Context
Rochester Electronics supplies this component as a qualified replacement for original manufacturers, often supporting legacy defense programs. The 54L55 series belongs to the broader SN54xx logic family, distinguished by its extended temperature rating and robust construction. This specific variant maintains functional equivalence to the original SN54L55 while adhering to modern quality assurance standards.
Replacement Considerations
The SN54L55 is the direct functional equivalent. For higher speed requirements, consider the SN54H55; for lower power, the SN54LS55 may be appropriate, though logic levels must be verified.
