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| Part Number | SN74LS244N | SN74LS244NS | SN74LS245N | SN74LS240N | SN74LS241N | SN74LS242N | SN74LS243N |
|---|---|---|---|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments | onsemi | Texas Instruments | Motorola | Texas Instruments |
| Product Status | Active | Active | Active | Obsolete | Active | Active | Active |
| Logic Type | Buffer, Non-Inverting | Buffer, Non-Inverting | Transceiver, Non-Inverting | Buffer, Inverting | Buffer, Non-Inverting | - | Transceiver, Non-Inverting |
| Number of Elements | 2 | 2 | 1 | 2 | 2 | - | 1 |
| Number of Bits per Element | 4 | 4 | 8 | 4 | 4 | - | 4 |
| Input Type | - | - | - | - | - | - | - |
| Output Type | 3-State | 3-State | 3-State | 3-State | 3-State | - | Push-Pull |
| Current - Output High, Low | 15mA, 24mA | 15mA, 24mA | 15mA, 24mA | 15mA, 24mA | 15mA, 24mA | - | 15mA, 24mA |
| Voltage - Supply | 4.75V ~ 5.25V | 4.75V ~ 5.25V | 4.75V ~ 5.25V | 4.75V ~ 5.25V | 4.75V ~ 5.25V | - | 4.75V ~ 5.25V |
| 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) | - | 0°C ~ 70°C (TA) |
| Mounting Type | Through Hole | Surface Mount | Through Hole | Through Hole | Through Hole | - | Through Hole |
| Package / Case | 20-DIP (0.300", 7.62mm) | 20-SOIC (0.209", 5.30mm Width) | 20-DIP (0.300", 7.62mm) | 20-DIP (0.300", 7.62mm) | 20-DIP (0.300", 7.62mm) | - | 14-DIP (0.300", 7.62mm) |
| Supplier Device Package | 20-PDIP | 20-SO | 20-PDIP | 20-PDIP | 20-PDIP | - | 14-PDIP |
