| Part Number | SN74LS540DW | SN74LS640DW |
|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments |
| Category | Logic - Buffers, Drivers, Receivers, Transceivers | Logic - Buffers, Drivers, Receivers, Transceivers |
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| Product Status | Active | Active |
| Logic Type | Buffer, Inverting | Transceiver, Inverting |
| Number of Elements | 1 | 1 |
| Number of Bits per Element | 8 | 8 |
| Input Type | - | - |
| Output Type | 3-State | 3-State |
| Current - Output High, Low | 15mA, 24mA | 15mA, 24mA |
| Voltage - Supply | 4.75V ~ 5.25V | 4.75V ~ 5.25V |
| Operating Temperature | 0°C ~ 70°C (TA) | 0°C ~ 70°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 20-SOIC (0.295", 7.50mm Width) | 20-SOIC (0.295", 7.50mm Width) |
| Supplier Device Package | 20-SOIC | 20-SOIC |