74LS28 Quad 2 Inputs NOR Gate Buffer IC

74LS28 is a quad 2 input NOR gate buffer IC. It is a low-power Schottky logic (LS) IC that can use to create a variety of digital circuits. The 74LS28 has four NOR gates, each with two inputs and one output. The NOR gate is a logic gate that produces a high output when both of its inputs are low. When either input is high, the output is low.

74LS28 IC has a wide range of working voltage, a wide range of working conditions, and directly interfaces with CMOS, NMOS, and TTL. The output of the IC always comes in TTL which makes it easy to work with other TTL devices and microcontrollers.

NOR gate is a digital logic gate that implements logical NOR – it behaves according to the truth table to the right. A HIGH output results if both the inputs to the gate are LOW; if one or both input is HIGH, a LOW output results.

74LS28 Quad 2-Input NOR Buffer circuit is designed such that the NOR operation produced on the inputs of 2,3 , 5,6, 8,9 , 11,12 are produced on the pins 1,4,10,13 respectively. Operating supply voltages to the IC can vary between 4.5V to 5V and to a maximum of 5.5V and the input logic levels to the device in ‘0’ (LOW) state is max. 0.7V and for ‘1’ (HIGH) state is min 2V.

It is a low-power Schottky logic (LS) IC that can be used to create a variety of digital circuits. The 74LS28 has four NOR gates, each with two inputs and one output. The NOR gate is a logic gate that produces a high output when both of its inputs are low. When either input is high, the output is low.

Features : –
74LS28 Buffer IC is smaller in size and it has a much faster speed which makes it reliable in every kind of device.

Here are some of the features of the 7428 buffer IC:

Quad 2-input NOR gate: The 74LS28 has four independent 2-input NOR gates.
Low-power Schottky logic: The 74LS28 is a low-power Schottky logic IC, which means that it is very low power and consumes very little current.
Wide operating voltage range: The 74LS28 can operate on a wide range of voltages, from 4.5V to 5.5V.
High speed: The 74LS28 is a high-speed IC, with a propagation delay of only 25 ns.
Wide temperature range: The 74LS28 can operate in a wide temperature range, from -55°C to 125°C.
Fan-out: The 74LS28 has a fan-out of 10, which means that it can drive up to 10 other ICs.
Power supply: The 74LS28 requires a power supply voltage of 4.5V to 5.5V.
Package: The 74LS28 is available in a 14-pin DIP package