| PartNumber | SN74HC688NE4 | SN74HC688N | SN74HC688NG4 |
| Description | Logic Comparators 8-Bit Identity Comparators | Logic Comparators 8bit Identity | IC COMPARATOR IDENTITY 8B 20DIP |
| Manufacturer | Texas Instruments | Texas Instruments | - |
| Product Category | Logic Comparators | Logic Comparators | - |
| RoHS | Y | Y | - |
| Comparator Type | Identity | Identity | - |
| Number of Bits | 8 bit | 8 bit | - |
| Logic Function | A = B | A = B | - |
| Output Type | Active Low | Active Low | - |
| Supply Voltage Max | 6 V | 6 V | - |
| Supply Voltage Min | 2 V | 2 V | - |
| Minimum Operating Temperature | - 40 C | - 40 C | - |
| Maximum Operating Temperature | + 85 C | + 85 C | - |
| Propagation Delay Time | 210 ns, 42 ns, 36 ns | 210 ns, 42 ns, 36 ns | - |
| Mounting Style | Through Hole | Through Hole | - |
| Package / Case | PDIP-20 | PDIP-20 | - |
| Packaging | Tube | Tube | - |
| Product | Digital Comparators | Digital Comparators | - |
| Series | SN74HC688 | SN74HC688 | - |
| Brand | Texas Instruments | Texas Instruments | - |
| Shutdown | No Shutdown | No Shutdown | - |
| Operating Supply Voltage | 2 V to 6 V | 2 V to 6 V | - |
| Polarity | Inverting | Inverting | - |
| Product Type | Logic Comparators | Logic Comparators | - |
| Factory Pack Quantity | 20 | 20 | - |
| Subcategory | Logic ICs | Logic ICs | - |
| Unit Weight | 0.042297 oz | 0.042329 oz | - |
| Operating Supply Current | - | 4 mA | - |