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Product Detailed Parameters
- Description：DUAL MARKED (M38510/30204BCA)
- Series：*
- Mfr：Rochester Electronics, LLC
- Package：Bulk
- Logic Type：-
- Number of Elements：-
- Number of Bits per Element：-
- Input Type：-
- Output Type：-
- Current - Output High, Low：-
- Voltage - Supply：-
- Operating Temperature：-
- Mounting Type：-
- Package / Case：-
- Supplier Device Package：-
- Grade：-
- Qualification：-
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Overview
The 54LS28/BCA is a quad 2-input positive-NOR gate manufactured by Rochester Electronics. It belongs to the LS (Low-power Schottky) logic series and utilizes TTL technology. The device is housed in a CDIP14 ceramic dual in-line package with 14 pins. It supports an operating temperature range from -55 °C to 125 °C, suitable for military applications. The propagation delay is specified at 15 ns.
Feature Summary
- Contains four independent 2-input positive-NOR gates
- Utilizes Low-power Schottky (LS) TTL technology
- Constructed in a hermetically sealed ceramic DIP-14 package
Applications
- Military-grade digital logic circuits
- Industrial control systems requiring extended temperature stability
- Avionics signal processing
Procurement Notes
Verify the specific suffix 'BCA' against official manufacturer documentation to confirm package and material specifications. Ensure the component meets MIL-PRF-38535 Class Q requirements if intended for military use. Confirm that the ceramic DIP-14 package matches the design constraints. Validate the operating temperature range of -55 °C to 125 °C against system thermal profiles.
Selection Notes
Select this component when a quad NOR gate configuration is required within a harsh environment. The LS series offers a balance of speed and power consumption. The ceramic package provides superior environmental protection compared to plastic alternatives. Verify pinout compatibility with existing PCB layouts before integration.
Part Context
Rochester Electronics specializes in sustaining legacy semiconductor products. They provide licensed and tested versions of components that are otherwise obsolete. This ensures continued availability for critical systems without redesigning hardware. The company maintains extensive wafer banks to support long-term production needs.
Replacement Considerations
Compatible substitutes include other SN54LS28 variants from original manufacturers or equivalent LS-series quad NOR gates. Verify electrical parameters such as propagation delay and voltage levels. Ensure the replacement package matches the physical footprint and pin configuration.
