Overview
The CD4520BM is a CMOS Dual Binary Up-Counter produced by Texas Instruments. This component consists of two identical, internally synchronous 4-stage counters, each made up of D-type flip-flops. The counters can be incremented on either the positive-going or negative-going transition of the clock signal, making them versatile for various counting applications. Although the CD4520BM in the SOIC (D) package is listed as obsolete, other package options like SOIC (D) with the M96 suffix are still active and recommended for new designs.
Key Specifications
| Specification | Value |
|---|---|
| Package Type | SOIC (D), PDIP, CDIP, TSSOP, SOP |
| Pins | 16 |
| Operating Temperature Range (°C) | -55 to 125 |
| Clock Frequency at 10 V | 6 MHz (typical) |
| Input Current at 18 V | 1 µA (max over full package-temperature range), 100 nA at 18 V and 25°C |
| Noise Margin at VDD | 1 V at 5 V, 2 V at 10 V, 2.5 V at 15 V |
| Supply Voltage | 5 V, 10 V, 15 V |
| Package Quantity | Varies by package type (e.g., 2500 for SOIC D M96) |
Key Features
- Medium-speed operation with a typical clock frequency of 6 MHz at 10 V.
- Positive- or negative-edge triggering capability.
- Synchronous internal carry propagation.
- 100% tested for quiescent current at 20 V.
- Standardized, symmetrical output characteristics.
- Meets all requirements of JEDEC Tentative Standard No. 13B for B Series CMOS Devices.
Applications
- Multistage synchronous counting.
- Multistage ripple counting.
- Frequency dividers.
Q & A
- What is the CD4520BM?
The CD4520BM is a CMOS Dual Binary Up-Counter produced by Texas Instruments, consisting of two identical, internally synchronous 4-stage counters. - What are the package options for the CD4520B?
The CD4520B is available in various packages including SOIC (D), PDIP, CDIP, TSSOP, and SOP. - What is the operating temperature range of the CD4520B?
The operating temperature range is -55°C to 125°C. - What is the typical clock frequency of the CD4520B at 10 V?
The typical clock frequency is 6 MHz at 10 V. - Can the CD4520B be triggered on both positive and negative edges?
Yes, the CD4520B can be triggered on either the positive-going or negative-going transition of the clock signal. - What are the noise margins for the CD4520B at different supply voltages?
The noise margins are 1 V at 5 V, 2 V at 10 V, and 2.5 V at 15 V. - Is the CD4520BM still in production?
The CD4520BM in the SOIC (D) package is listed as obsolete, but other package options like SOIC (D) with the M96 suffix are still active. - What are some common applications of the CD4520B?
Common applications include multistage synchronous counting, multistage ripple counting, and frequency dividers. - Does the CD4520B meet any specific industry standards?
Yes, it meets all requirements of JEDEC Tentative Standard No. 13B for B Series CMOS Devices. - How is the quiescent current of the CD4520B tested?
The CD4520B is 100% tested for quiescent current at 20 V.
