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| PartNumber | SN74LS299DWR | SN74LS299DWRE4 | SN74LS299DWR2 |
| Description | Counter Shift Registers Universal shift/ storage registers | Counter Shift Registers Universal shift/ storage registers | Shift Register Single 8-Bit Serial/Parallel to Serial/Parallel 20-Pin SOIC T/R |
| Manufacturer | Texas Instruments | Texas Instruments | - |
| Product Category | Counter Shift Registers | Counter Shift Registers | - |
| RoHS | Y | Y | - |
| Counting Sequence | Serial/Parallel to Serial/Parallel | Serial/Parallel to Serial/Parallel | - |
| Number of Circuits | 1 | 1 | - |
| Number of Bits | 8 bit | 8 bit | - |
| Package / Case | SOIC-20 | SOIC-20 | - |
| Logic Family | LS | LS | - |
| Logic Type | Bipolar | Bipolar | - |
| Number of Input Lines | 10 | 10 | - |
| Output Type | 3-State | 3-State | - |
| Propagation Delay Time | 39 ns | 39 ns | - |
| Supply Voltage Min | 4.75 V | 4.75 V | - |
| Supply Voltage Max | 5.25 V | 5.25 V | - |
| Minimum Operating Temperature | 0 C | 0 C | - |
| Maximum Operating Temperature | + 70 C | + 70 C | - |
| Packaging | Reel | Reel | - |
| Features | No Parallel Enable Input | No Parallel Enable Input | - |
| Function | Shift Register | Shift Register | - |
| Height | 2.35 mm | 2.35 mm | - |
| Length | 12.8 mm | 12.8 mm | - |
| Width | 7.52 mm | 7.52 mm | - |
| Brand | Texas Instruments | Texas Instruments | - |
| Mounting Style | SMD/SMT | SMD/SMT | - |
| Number of Output Lines | 10 | 10 | - |
| Operating Supply Voltage | 5 V | 5 V | - |
| Product Type | Counter Shift Registers | Counter Shift Registers | - |
| Reset Type | Asynchronous | Asynchronous | - |
| Factory Pack Quantity | 1 | 1 | - |
| Subcategory | Logic ICs | Logic ICs | - |
| Triggering Type | Positive Edge | Positive Edge | - |
| Unit Weight | 0.018953 oz | 0.018953 oz | - |