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The 74LS21 is an IC which contains two independent 4 input AND gate each of which performs the logic AND function.74LS21 Dual 4-Input Positive and Gates ICFeatures of 74LS21 Dual 4-Input Positive and Gates IC:Supply Voltage: 5.25 V.HIGH Level Input Voltage: 2 V.LOW Level Input Voltage: 0.8 V.HIGH Le..

The 74LS04 is an IC which contains six independent gates each of which performs the logic INVERT function.Features of 74LS04 Hex Inverting Gates IC:Supply voltage: 4.5 v – 5.5 v.Ambient operating temperature: -55 to 125 Degree Centigrade.Applications of 74LS04 Hex Inverting Gates IC:DIY projects.Ele..