SN74LS132DR Integrated Circuits (ICs)

SN74LS132DR application field and working principle

The SN74LS132DR device is a quad two-input OR gate with Schottky TTL circuitry that performs the Boolean function Y=A+B or Y=A∥B in positive logic. The SN74LS132DR is available in 14-pin plastic dual-in-line packages (PDIP), metal-clad shrink small-outline packages (MSOP), and small-outline packages (SOP). All inputs are protected against damage due to static discharge by internal diodes to VCC and ground.

The SN74LS132DR is one of the most commonly used logic gates in digital circuits. It has four OR gates, each with two inputs and one output. Every input can accept either a low (0V) or a high (Vcc) voltage level depending on the logic operation required. The output can be either of these two voltage levels. As with all logic gates, the output of an OR gate is logic 1 only when either of the two inputs is logic 1. The SN74LS132DR has four output drivers in a single package, each of which has a common input, making it suitable for use in multiplexer and demultiplexer applications. The integrated circuit practically comes with an array of eight OR gates.

The working principle of the SN74LS132DR device is based on the OR logic gate. An OR logic gate is described mathematically as Y=A+B, which means that the output of the gate is high when either A or B are high, and it is low only when A and B are both low. This is also known as a “sum-of-products” logic. The SN74LS132DR uses Schottky TTL circuitry, which means that its transistors use low-power Schottky diodes for logic gate input rather than the more traditional MOSFETs. This is significant because it allows for faster switching times due to reduced input capacitance and faster switching times for the logic gate itself.

The SN74LS132DR has several applications, the most prominent being multiplexers and demultiplexers. Multiplexers are used to select one of several input sources to pass through to the output. For example, a 4- bit data bus might pass through a multiplexer to select either 0V or 5V on the output depending on the state of the multiplexer. Likewise, demultiplexers are used to take a single input line and use several output lines, each of which will carry either 0V or 5V depending on the state of the demultiplexer. With four output drivers contained in a single package, the SN74LS132DR is well suited to these types of applications.

In summary, the SN74LS132DR is a four-bit OR gate. It is composed of four two-input OR gates and is based on Schottky TTL circuitry. As with all logic gates, the output of this logic gate is high when either of the two inputs is high, and it is low only when both of the inputs are low. The SN74LS132DR can be used for multiplexer and demultiplexer applications due to its four output drivers contained in a single package.