ChipApex | Global Electronic Components Supplier
SEARCH
Search Product
Search Post
— IC芯片 | 连接器 | 传感器 | 被动器件 —
Consult the customer manager about the wholesale price.
consultation hotline：86-132-6715-2157
email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.
Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.
Product Detailed Parameters
- Description：DECADE COUNTER, LS SERIES
- Series：*
- Mfr：Texas Instruments
- Package：Bulk
- Logic Type：-
- Direction：-
- Number of Elements：-
- Number of Bits per Element：-
- Reset：-
- Timing：-
- Count Rate：-
- Trigger Type：-
- Operating Temperature：-
- Mounting Type：-
- Package / Case：-
- Supplier Device Package：-
- Voltage - Supply：-
- Grade：-
- Qualification：-
Download product information
Overview
The SNJ54LS90W is a hermetically sealed, metal-flange decade counter from the Texas Instruments SNJ54LS series. It operates asynchronously with negative edge triggering and counts up through three bits. The device provides divide-by-2 and divide-by-5 functions within a single package. It utilizes a 14-pin Metal Flatpack (MDFP) ceramic package designed for high reliability in extreme environments. The component supports an operating temperature range from -55 °C to 125 °C and requires a nominal 5 V supply voltage.
Feature Summary
- Hermetically sealed metal flatpack construction for environmental protection
- Asynchronous negative edge-triggered counting operation
- Integrated divide-by-2 and divide-by-5 functionality
Applications
- Military aerospace digital systems
- Spacecraft telemetry counters
- High-reliability industrial control logic
Procurement Notes
Verify the specific suffix 'W' against the manufacturer's official datasheet to confirm the exact pinout and mechanical dimensions of the flatpack variant. Ensure procurement channels provide traceable documentation confirming the hermetic seal integrity and military-grade qualification standards required for this component class.
Selection Notes
Select this component when military-grade radiation hardness and thermal stability are mandatory. The SNJ54LS90W is appropriate for designs requiring a compact, hermetically sealed decade counter that can withstand extreme temperature fluctuations without performance degradation, distinguishing it from commercial plastic-packaged alternatives.
Part Context
This part belongs to the SNJ54LS family, which represents the military-grade version of the standard 74LS logic series. Unlike commercial variants, these components feature ceramic packaging and rigorous testing protocols. They are engineered for applications where failure is not an option, such as defense and space exploration systems requiring long-term operational stability.
Replacement Considerations
Direct replacements include other hermetically sealed LS decade counters like the SNJ54LS90J or SNJ54LS90K, provided the package style matches the design constraints. Verify compatibility with existing board layouts and mounting requirements before substituting.
