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| PartNumber | HEF4021BT,653 | HEF4021BT,652 | HEF4021BT |
| Description | Counter Shift Registers 8-BIT STATIC SHIFT REGISTER | Counter Shift Registers 8-B STATIC SHIFT REG | 8-BIT STATIC SHIFT REGISTER AUTO SOIC16, TU |
| Manufacturer | Nexperia | Nexperia | NXP |
| Product Category | Counter Shift Registers | Counter Shift Registers | Logic - Shift Registers |
| RoHS | Y | Y | - |
| Counting Sequence | Serial/Parallel to Parallel | Serial/Parallel to Parallel | - |
| Number of Circuits | 1 | 1 | - |
| Number of Bits | 8 bit | 8 bit | - |
| Package / Case | SO-16 | SO-16 | - |
| Logic Family | HEF4000 | HE4000B | - |
| Logic Type | CMOS | CMOS | - |
| Number of Input Lines | 9 | 8 | - |
| Propagation Delay Time | 40 ns | 250 ns, 110 ns, 80 ns | - |
| Supply Voltage Min | 4.5 V | - | - |
| Supply Voltage Max | 15.5 V | 15 V | - |
| Minimum Operating Temperature | - 40 C | - 40 C | - |
| Maximum Operating Temperature | + 125 C | + 85 C | - |
| Packaging | Reel | Tube | - |
| Function | Shift Register | Shift Register | - |
| Width | 4 mm | 4 mm | - |
| Brand | Nexperia | Nexperia | - |
| Mounting Style | SMD/SMT | SMD/SMT | - |
| Number of Output Lines | 3 | 3 | - |
| Operating Supply Voltage | 3.3 V, 5 V, 9 V, 12 V | 4.5 V to 15.5 V | - |
| Product Type | Counter Shift Registers | Counter Shift Registers | - |
| Factory Pack Quantity | 2500 | 50 | - |
| Subcategory | Logic ICs | Logic ICs | - |
| Part # Aliases | HEF4021BTD-T | HEF4021BTD | - |
| Unit Weight | 0.010582 oz | 0.008818 oz | - |