PinoutSpecificationsSupply voltage range, VCC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...........................−0.5 V to 7 VInput voltage range, VI(see Note 1). . . . . . . . . . . . . . . . . . . . . . . . . . . . . .................. −0.5 V to 7 VOutput vol...
SN54LV27A: PinoutSpecificationsSupply voltage range, VCC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...........................−0.5 V to 7 VInput voltage range, VI(see Note 1). . . ...
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Features: PinoutSpecificationsDescriptionThe SN54/74LS147 and SN54/74LS148 are Priority Encoders. ...
PinoutDescriptionThe LS155 and LS156 are Dual 1-of-4 Decoder/Demultiplexers with common Address in...

These triple 3-input positive-NOR gates of LV27A are designed for 2-V to 5.5-V VCC operation.
The 'LV27A devices perform the Boolean function Y = A + B + C</a> or Y = A</a>• B</a>• C</a> in positive logic.
LV27A is fully specified for partial-power-down applications using I off. The Ioff circuitry disables the outputs, preventing damaging current backflow through the devices when they are powered down.