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| Part Number | HEF4521BP,652 | HEF4521BT,652 | HEF4526BP,652 | HEF4520BP,652 |
|---|---|---|---|---|
| Manufacturer | NXP USA Inc. | Nexperia USA Inc. | NXP USA Inc. | NXP USA Inc. |
| Product Status | Obsolete | Obsolete | Obsolete | Obsolete |
| Logic Type | Divide-by-2 | Divide-by-2 | Binary Counter | Binary Counter |
| Direction | - | - | Down | Up |
| Number of Elements | 1 | 1 | 1 | 2 |
| Number of Bits per Element | 24 | 24 | 4 | 4 |
| Reset | Asynchronous | Asynchronous | Asynchronous | Asynchronous |
| Timing | - | - | Synchronous | - |
| Count Rate | 35 MHz | 35 MHz | 32 MHz | 40 MHz |
| Trigger Type | Negative Edge | Negative Edge | Positive, Negative | Positive, Negative |
| Voltage - Supply | 3 V ~ 15 V | 3 V ~ 15 V | 4.5 V ~ 15.5 V | 4.5 V ~ 15.5 V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C |
| Mounting Type | Through Hole | Surface Mount | Through Hole | Through Hole |
| Package / Case | 16-DIP (0.300", 7.62mm) | 16-SOIC (0.154", 3.90mm Width) | 16-DIP (0.300", 7.62mm) | 16-DIP (0.300", 7.62mm) |
| Supplier Device Package | - | 16-SO | 16-DIP | 16-DIP |
