Product Category: Buffers & Line Drivers    Number of Input Lines: 8 Input     Number of Output Lines: 8 Output     Polarity: Inverting     High Level Output Current: - 15 mA     Low-Level Output Current: 24 mA     Supply Voltage - Max: 5.25 V     Supply Voltage - Min: 4.75 V     Operating Supply Current: 45 uA     Minimum Operating Temperature: 0 C     Maximum Operating Temperature: + 70 C     Mounting Style: Through Hole     Package / Case: PDIP-20     Packaging: Tube     Function: Buffer/Line Driver   Operating Temperature Range:    0 C to + 70 C     Output Type: 3-State     Series: SN74LS540     Technology: Bipolar    Logic Family: LS     Logic Type: Bipolar     Number of Channels: 8     Input Signal Type: Single-Ended     Operating Supply Voltage: 5 V     Product Type: Buffers & Line Drivers     Propagation Delay Time: 15 ns at 5 V