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| Part Number | SN74HC684N | SN74HC688N | SN74HC682N | 
|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments | 
| Product Status | Active | Active | Active | 
| Type | Magnitude Comparator | Identity Comparator | Magnitude Comparator | 
| Number of Bits | 8 | 8 | 8 | 
| Output | Active Low | Active Low | Active Low | 
| Output Function | A=B, A>B | A=B | A=B, A>B | 
| Voltage - Supply | 2V ~ 6V | 2V ~ 6V | 2V ~ 6V | 
| Current - Output High, Low | 5.2mA, 5.2mA | 5.2mA, 5.2mA | 5.2mA, 5.2mA | 
| Max Propagation Delay @ V, Max CL | 47ns @ 6V, 50pF | 36ns @ 6V, 50pF | 47ns @ 6V, 50pF | 
| Current - Quiescent (Iq) | - | 8 µA | - | 
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C | 
| Package / Case | 20-DIP (0.300", 7.62mm) | 20-DIP (0.300", 7.62mm) | 20-DIP (0.300", 7.62mm) | 
| Supplier Device Package | 20-PDIP | 20-PDIP | 20-PDIP | 
| Mounting Type | Through Hole | Through Hole | Through Hole |