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Product Detailed Parameters
- Description：SN54ALS74A DUAL POSITIVE-EDGE-TR
- Series：*
- Mfr：Texas Instruments
- Package：Bulk
- Function：-
- Type：-
- Output Type：-
- Number of Elements：-
- Number of Bits per Element：-
- Clock Frequency：-
- Max Propagation Delay @ V, Max CL：-
- Trigger Type：-
- Current - Output High, Low：-
- Voltage - Supply：-
- Current - Quiescent (Iq)：-
- Operating Temperature：-
- Mounting Type：-
- Supplier Device Package：-
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- Input Capacitance：-
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Overview
The SN5484011012A is a military-grade NOR gate from the Texas Instruments SN54HC series. It features two independent four-input logic gates housed in a 20-lead Ceramic LCCC package. The device operates within a supply voltage range of 2 V to 6 V and supports a low-level output drive current of 5.2 mA. It exhibits a propagation delay of 165 ns and functions reliably across an extended temperature range from -55°C to +125°C, ensuring stability in harsh environments.
Feature Summary
- Military-grade reliability for extreme environmental conditions
- Dual four-input NOR logic functionality
- Robust ceramic packaging for durability
Applications
- Military avionics systems
- Spacecraft digital logic circuits
- Harsh environment industrial control
Procurement Notes
Verify availability status carefully as this component may be subject to limited distribution or special factory orders. Confirm that the specific ordering suffix matches the required military qualification and package variant. Ensure compatibility with existing system voltage levels and thermal management requirements before finalizing procurement decisions.
Selection Notes
Select this component when high-reliability NOR logic is required for aerospace or defense applications. The HC series offers standard CMOS performance with wide voltage tolerance. Consider the LCCC package for superior thermal dissipation and mechanical strength compared to plastic alternatives in demanding operational scenarios.
Part Context
This part belongs to the SN54HC4002 family of single-function gates. The SN54 prefix indicates military qualification, distinguishing it from commercial SN74 variants. It provides standardized digital logic operations suitable for complex circuit designs requiring robust signal processing capabilities under strict operational constraints.
Replacement Considerations
Direct substitutes include other SN54HC4002 variants with matching military ratings. Verify pinout compatibility and electrical specifications against the original datasheet. Alternative packages may require adapter solutions if physical mounting constraints differ.
