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| Part Number | SN74AS640N | SN74AS643N | SN74AS645N | SN74AS641N | SN74AS240N | SN74AS2640N |
|---|---|---|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Product Status | Active | Active | Active | Active | Active | Active |
| Logic Type | Transceiver, Inverting | - | Transceiver, Non-Inverting | Transceiver, Inverting | - | - |
| Number of Elements | 1 | - | 1 | 1 | - | - |
| Number of Bits per Element | 8 | - | 8 | 8 | - | - |
| Input Type | - | - | - | - | - | - |
| Output Type | 3-State | - | 3-State | Open Collector | - | - |
| Current - Output High, Low | 15mA, 64mA | - | 15mA, 64mA | -, 64mA | - | - |
| Voltage - Supply | 4.5V ~ 5.5V | - | 4.5V ~ 5.5V | 4.5V ~ 5.5V | - | - |
| Operating Temperature | 0°C ~ 70°C (TA) | - | 0°C ~ 70°C (TA) | 0°C ~ 70°C (TA) | - | - |
| Mounting Type | Through Hole | - | Through Hole | Through Hole | - | - |
| 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 | - | - |
