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| Part Number | M74HC390B1R |
| Datasheet | M74HC390B1R datasheet |
| Description | IC DECADE COUNTER DUAL 16-DIP |
| Manufacturer | STMicroelectronics |
| Series | 74HC |
| Part Status | Obsolete |
| Logic Type | Counter, Decade |
| Direction | Up |
| Number of Elements | 2 |
| Number of Bits per Element | 4 |
| Reset | Asynchronous |
| Timing | Synchronous |
| Count Rate | 79MHz |
| Trigger Type | Negative Edge |
| Voltage - Supply | 2V ~ 6V |
| Operating Temperature | -55°C ~ 125°C |
| Mounting Type | Through Hole |
| Package / Case | 16-DIP (0.300", 7.62mm) |
| Supplier Device Package | 16-DIP |