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| Part Number | SN74LS640M | SN74LS640N | SN74LS540M |
|---|---|---|---|
| Manufacturer | onsemi | Texas Instruments | onsemi |
| Product Status | Active | Active | Active |
| Logic Type | - | Transceiver, Inverting | - |
| Number of Elements | - | 1 | - |
| Number of Bits per Element | - | 8 | - |
| Input Type | - | - | - |
| Output Type | - | 3-State | - |
| Current - Output High, Low | - | 15mA, 24mA | - |
| Voltage - Supply | - | 4.75V ~ 5.25V | - |
| Operating Temperature | - | 0°C ~ 70°C (TA) | - |
| Mounting Type | - | Through Hole | - |
| Package / Case | - | 20-DIP (0.300", 7.62mm) | - |
| Supplier Device Package | - | 20-PDIP | - |
