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| Part Number | MC14521BF | MC14521BFG | MC14521BD | 
|---|---|---|---|
| Manufacturer | onsemi | onsemi | onsemi | 
| Product Status | Active | Obsolete | Obsolete | 
| Logic Type | - | Divide-by-2 | Divide-by-2 | 
| Direction | - | - | - | 
| Number of Elements | - | 1 | 1 | 
| Number of Bits per Element | - | 24 | 24 | 
| Reset | - | Asynchronous | Asynchronous | 
| Timing | - | - | - | 
| Count Rate | - | 12 MHz | 12 MHz | 
| Trigger Type | - | Negative Edge | Negative Edge | 
| Voltage - Supply | - | 3 V ~ 18 V | 3 V ~ 18 V | 
| Operating Temperature | - | -55°C ~ 125°C | -55°C ~ 125°C | 
| Mounting Type | - | Surface Mount | Surface Mount | 
| Package / Case | - | 16-SOIC (0.209", 5.30mm Width) | 16-SOIC (0.154", 3.90mm Width) | 
| Supplier Device Package | - | 16-SOEIAJ | 16-SOIC |