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| Part Number | DM74ALS240AN | DM74ALS241AN | DM74ALS244AN | DM74ALS540AN | DM74ALS245AN | DM74ALS640AN |
|---|---|---|---|---|---|---|
| Manufacturer | Fairchild Semiconductor | Fairchild Semiconductor | Fairchild Semiconductor | Fairchild Semiconductor | onsemi | onsemi |
| Product Status | Obsolete | Obsolete | Obsolete | Obsolete | Active | Obsolete |
| Logic Type | Buffer, Inverting | Buffer, Non-Inverting | Buffer, Non-Inverting | Buffer, Inverting | - | Transceiver, Inverting |
| Number of Elements | 2 | 2 | 2 | 1 | - | 1 |
| Number of Bits per Element | 4 | 4 | 4 | 8 | - | 8 |
| Input Type | - | - | - | - | - | - |
| Output Type | 3-State | 3-State | 3-State | 3-State | - | 3-State |
| Current - Output High, Low | 15mA, 24mA | 15mA, 24mA | 15mA, 24mA | 15mA, 24mA | - | 15mA, 24mA |
| Voltage - Supply | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 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) | 0°C ~ 70°C (TA) | - | 0°C ~ 70°C (TA) |
| Mounting Type | Through Hole | Through Hole | 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) | 20-DIP (0.300", 7.62mm) | - | 20-DIP (0.300", 7.62mm) |
| Supplier Device Package | 20-PDIP | 20-PDIP | 20-PDIP | 20-PDIP | - | 20-PDIP |
