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| Part Number | CD4520BM | CD4522BM | CD4521BM | CD4520BD | CD4520BE |
|---|---|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments | Harris Corporation | Harris Corporation |
| Product Status | Active | Active | Active | Active | Obsolete |
| Logic Type | Binary Counter | Divide-by-N | Divide-by-2 | Binary Counter | Binary Counter |
| Direction | Up | Down | - | Up | Up |
| Number of Elements | 2 | 1 | 1 | 2 | 2 |
| Number of Bits per Element | 4 | 4 | 24 | 4 | 4 |
| Reset | Asynchronous | Asynchronous | Asynchronous | Asynchronous | Asynchronous |
| Timing | Synchronous | - | - | Synchronous | Synchronous |
| Count Rate | 8 MHz | 8 MHz | 13 MHz | 8 MHz | 8 MHz |
| Trigger Type | Positive, Negative | Positive, Negative | Negative Edge | - | Positive, Negative |
| Voltage - Supply | 3 V ~ 18 V | 3 V ~ 18 V | 3 V ~ 18 V | 3 V ~ 18 V | 3 V ~ 18 V |
| Operating Temperature | -55°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 125°C (TA) | -55°C ~ 125°C |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Through Hole |
| Package / Case | 16-SOIC (0.154", 3.90mm Width) | 16-SOIC (0.154", 3.90mm Width) | 16-SOIC (0.154", 3.90mm Width) | 16-SOIC (0.154", 3.90mm Width) | 16-DIP (0.300", 7.62mm) |
| Supplier Device Package | 16-SOIC | 16-SOIC | 16-SOIC | 16-SOIC | 16-PDIP |
