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| Part Number | SN74LS688N | SN74LS688N3 | SN74ALS688N | SN74LS682N | SN74LS684N | SN74LS685N |
|---|---|---|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | onsemi | Texas Instruments |
| Product Status | Active | Active | Active | Active | Obsolete | Active |
| Type | Identity Comparator | - | Identity Comparator | Magnitude Comparator | Magnitude Comparator | - |
| Number of Bits | 8 | - | 8 | 8 | 8 | - |
| Output | Active Low | - | Active Low | Active Low | Active Low | - |
| Output Function | A=B | - | A=B | A=B, A>B | A=B, A>B | - |
| Voltage - Supply | 4.85V ~ 5.25V | - | 4.5V ~ 5.5V | 4.85V ~ 5.25V | 4.85V ~ 5.25V | - |
| Current - Output High, Low | 400µA, 24mA | - | 2.6mA, 24mA | 400µA, 24mA | 400µA, 24mA | - |
| Max Propagation Delay @ V, Max CL | 23ns @ 5V, 45pF | - | 20ns @ 5V, 50pF | 30ns @ 5V, 45pF | 30ns @ 5V, 45pF | - |
| Current - Quiescent (Iq) | - | - | - | - | - | - |
| Operating Temperature | 0°C ~ 70°C | - | 0°C ~ 70°C | 0°C ~ 70°C | 0°C ~ 70°C | - |
| Package / Case | 20-DIP (0.300", 7.62mm) | - | 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 | 20-PDIP | - |
| Mounting Type | Through Hole | - | Through Hole | Through Hole | Through Hole | - |
