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| Part Number | SN74AHC240DBR | SN74AHC244DBR | SN74AHC540DBR | SN74AHC240DWR | SN74AHC245DBR |
|---|---|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Product Status | Obsolete | Active | Active | Active | Active |
| Logic Type | Buffer, Inverting | Buffer, Non-Inverting | Buffer, Inverting | Buffer, Inverting | Transceiver, Non-Inverting |
| Number of Elements | 2 | 2 | 1 | 2 | 1 |
| Number of Bits per Element | 4 | 4 | 8 | 4 | 8 |
| Input Type | - | - | - | - | - |
| Output Type | 3-State | 3-State | 3-State | 3-State | 3-State |
| Current - Output High, Low | 8mA, 8mA | 8mA, 8mA | 8mA, 8mA | 8mA, 8mA | 8mA, 8mA |
| Voltage - Supply | 2V ~ 5.5V | 2V ~ 5.5V | 2V ~ 5.5V | 2V ~ 5.5V | 2V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 125°C (TA) | -40°C ~ 125°C (TA) | -40°C ~ 85°C (TA) | -40°C ~ 125°C (TA) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | 20-SSOP (0.209", 5.30mm Width) | 20-SSOP (0.209", 5.30mm Width) | 20-SSOP (0.209", 5.30mm Width) | 20-SOIC (0.295", 7.50mm Width) | 20-SSOP (0.209", 5.30mm Width) |
| Supplier Device Package | 20-SSOP | 20-SSOP | 20-SSOP | 20-SOIC | 20-SSOP |
