MC1439 datasheet, cross reference, circuit and application notes in pdf format. March 2000 1/16 M27C801 8 Mbit (1Mb x 8) UV EPROM and OTP EPROM 5V ±10% SUPPLY VOLTAGE in READ OPERATION ACCESS TIME: 45ns LOW POWER CONSUMPTION: – Active Current 35mA at 5MHz DM7400 Quad 2-Input NAND Gates. General Description. This device contains four independent gates each of which performs the logic NAND function. Ordering Code: Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. 74LS04 - 74LS04 Hex Inverter Datasheet - Buy 74LS04. Technical Information - Fairchild Semiconductor 74LS04 Datasheet. Buy General Integrated Circuit (ICs) products online at best price in Pakistan. Get genuine 2019 General Integrated Circuit (ICs) components like Voltage Regulator, Amplifier ICs, Encoder & Decoders, Timer & Counter ICs, Logic ICs at lowest price in Karachi, Lahore, Islamabad, Multan, Peshawar & across Pakistan. Feb 10, 2013 · The resistor is used to limit the current flowing from the 7432 through the LED. In short it sets the "operating point" of the LED. The operating point is a combination of voltage and current values that make the LED work as required while protecting the 7432 which can only deliver a limited amount of current (after all it's a logic gate made from tiny transistors not a massive power station).