In today's global electronics market, finding reliable alternatives to legacy components isn't just about cost—it's about ensuring project continuity and supply chain resilience.
For decades, engineers have reached for the Texas Instruments CD4013BM when designing circuits requiring dual D-type flip-flops. This CMOS workhorse, part of the 4000 series, has been a staple in everything from industrial automation to consumer electronics due to its reliable performance and versatile characteristics.
However, the electronics landscape has shifted significantly. With some TI variants marked as "DigiKey停止供應(DigiKey stopped supplying)" and ongoing global supply chain uncertainties, design engineers and procurement specialists are actively seeking reliable alternatives. Enter Slkor's CD4013—a functionally equivalent component that's not only readily available but also offers compelling advantages for many applications.
Head-to-Head: Slkor CD4013 vs. Texas Instruments CD4013BM
Let's break down how these two components compare across critical specifications:
Specification | Slkor CD4013 | Texas Instruments CD4013BM |
Operating Voltage | ||
Clock Frequency | ||
Propagation Delay | ||
Output Current | ||
Temperature Range | ||
Input Capacitance | Not specified | |
Package |
Pin-for-Pin Compatibility and Functional Parity
At their core, both ICs offer identical functionality: dual D-type flip-flops with independent data, set, reset, and clock inputs, plus complementary Q and Q' outputs. Each can be used in the same applications—shift registers, ring counters, control circuits, and registers—with minimal or no circuit modification required.
The SOP-14 package of the Slkor component directly matches the 14-SOIC package of the Texas Instruments version, making them mechanically interchangeable on PCB layouts.
When to Choose Slkor CD4013: The Practical Advantages
Supply Chain Reliability
One of the most compelling reasons to consider Slkor is availability. While some TI variants are listed as discontinued or out of stock on major distributors, Slkor's CD4013 maintains consistent inventory across multiple warehouses in China. For production schedules that can't afford delays, this availability difference can be decisive.
Cost Efficiency
Significant price differentials exist, especially in volume purchases. For 2,500+ units, Slkor's version costs approximately ¥0.4764 per unit (about $0.07 at current exchange rates), while TI's equivalent bulk pricing sits around $1.93 per unit. This substantial difference directly impacts the bottom line in high-volume manufacturing.
Performance Sufficiency for Most Applications
While TI's CD4013BM offers a wider temperature range (-55°C to 125°C) compared to Slkor's -40°C to +85°C, most industrial and consumer applications operate comfortably within Slkor's specified range. Similarly, while TI boasts a faster propagation delay (45ns vs 90ns), many timing circuits have sufficient margin to accommodate this difference without redesign.
Implementation Considerations and Migration Path
Transitioning from TI to Slkor CD4013 is generally straightforward but requires attention to several practical details:
Voltage Considerations: Ensure your application operates within Slkor's 3V to 15V range rather than TI's 3V to 18V capability.
Timing Analysis: Re-evaluate critical timing paths, accounting for the different propagation delays.
Thermal Management: Verify that operating temperatures remain within Slkor's -40°C to +85°C range, especially in enclosed or high-power designs.
Sourcing Strategy: Consider maintaining dual sourcing with both manufacturers qualified to mitigate future supply risks.
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