Part Number: SN74LS32N

Manufacturer: Texas Instruments

Description: IC GATE OR 4CH 2-INP 14DIP

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Technical Specifications of SN74LS32N

Datasheet  SN74LS32N datasheet
Category Integrated Circuits (ICs)
Family Logic – Gates and Inverters
Manufacturer Texas Instruments
Series 74LS
Packaging Tube
Part Status Active
Logic Type OR Gate
Number of Circuits 4
Number of Inputs 2
Voltage – Supply 4.75 V ~ 5.25 V
Current – Quiescent (Max)
Current – Output High, Low 400μA, 8mA
Logic Level – Low 0.8V
Logic Level – High 2V
Max Propagation Delay @ V, Max CL 22ns @ 5V, 15pF
Operating Temperature 0°C ~ 70°C
Mounting Type Through Hole
Supplier Device Package 14-PDIP
Package / Case 14-DIP (0.300″, 7.62mm)

SN74LS32N Introduction

The SN74LS32N is an integrated circuit (IC) that can be used as a 4-channel OR gate. It can do a lot of different things. It comes in a 14-pin dual in-line package (PDIP), which is easy to use. The OR gate is a basic logic gate that adds logically. The SN74LS32N is a useful part in digital logic applications because it is an OR gate.

The SN74LS32N makes circuit design open and efficient because it can take multiple input signals and make an output signal based on the logical OR operation. Because of how flexible it is, it is an important part of many digital systems, such as computer structures, signal routing, and control circuits.

The SN74LS32N is easy to integrate and works with normal IC sockets because its 14-pin PDIP package is small and widely used. This means that both hobbyists and professional designers can use it, which makes it even more useful for digital logic. In the parts that follow, we’ll talk about the SN74LS32N OR gate IC’s most important features, how its pins are set up, what it can be used for, and what it can do for you.

SN74LS32N Key Features and Specifications

The SN74LS32N IC has a number of features and specs that make it a good choice for digital logic uses, including:

  • 4-Channel OR Gate Configuration: The IC has four independent OR gates, so it can receive and combine four input signals at the same time.
  • Ratings for voltage and current: The SN74LS32N works with voltages between 4.75 V and 5.25 V, which makes it compatible with standard TTL logic levels. It is made to work with low amounts of current, usually up to 8 mA per output.
  • Propagation Delay: The IC’s propagation delay is usually around 15 ns, which is not too long. This makes sure that signals are processed quickly and effectively, and it keeps pauses in digital logic circuits to a minimum.
  • Operating Temperature Range: The SN74LS32N is made to work effectively in a wide range of temperatures, usually between 0°C and 70°C. This makes it useful in many different places and situations.
  • Compatibility with TTL Logic Families: The SN74LS32N is fully compatible with TTL logic families, so it can be used with other TTL components and circuits without any problems.
  • High Noise Immunity: The IC has high noise immunity, which means it can work successfully in noisy environments without a lot of signal loss.

The SN74LS32N is a great choice for digital logic applications because it is a 4-channel OR gate with high voltage and current ratings, a low propagation delay, and a wide working temperature range. It works with TTL logic types and can handle a lot of noise, which makes it a good choice for signal processing in a wide range of electronic systems.

Pin Configuration and Functions

The SN74LS32N IC is housed in a 14-pin dual-in-line package (PDIP). Here is a breakdown of the pin configuration and the functions of each pin:

Pin 1: Output (Y1) of OR Gate 1 Pin 2: Input (A1) of OR Gate 1 Pin 3: Input (B1) of OR Gate 1 Pin 4: Ground (GND)

Pin 5: Output (Y2) of OR Gate 2 Pin 6: Input (A2) of OR Gate 2 Pin 7: Input (B2) of OR Gate 2 Pin 8: VCC (positive power supply)

Pin 9: Input (B3) of OR Gate 3 Pin 10: Input (A3) of OR Gate 3 Pin 11: Output (Y3) of OR Gate 3 Pin 12: Output (Y4) of OR Gate 4

Pin 13: Input (B4) of OR Gate 4 Pin 14: Input (A4) of OR Gate 4

VCC (pin 8) and GND (pin 4) are the power source pins. They give the IC the voltage and ground reference it needs to work.

The data comes in through the inputs (A1, A2, A3, A4, B1, B2, B3, B4). These can have either a high voltage level (logic 1) or a low voltage level (logic 0).

The outputs (Y1, Y2, Y3, and Y4) provide the logical OR of the input information.

For stable operation, bypass capacitors should be connected between VCC (pin 8) and GND (pin 4). These capacitors will filter out noise and provide buffering. These capacitors help keep the voltage of the power supply steady and lower the chance that the voltage will change.

When connecting external parts to the SN74LS32N IC, it is important to check the datasheet and follow the suggested circuit design guidelines for the best performance and reliability.

SN74LS32N Application Examples

The SN74LS32N IC is used a lot in computer systems, digital logic circuits, and signal handling. Here are some ways it can be used:

  • Logic Gates: The SN74LS32N can be used in digital circuits to make logic gates, such as OR gates. It is small, easy to integrate, and works with TTL logic families, which makes sure that logic processes work well.
  • Signal Routing: The SN74LS32N is useful for signal routing applications where multiple input signals need to be merged or chosen. It has a low transmission delay and a high noise immunity, so it can route signals accurately with little loss.
  • In computer systems, the SN74LS32N is a key part of arithmetic logic units (ALUs), memory management circuits, and data bus interfaces. It works well for digital signal processing because it is compatible with TTL logic types and can work in a wide range of temperatures.
  • Industrial Control Systems: The SN74LS32N is often used in PLCs and automation circuits, which are types of industrial control systems. It makes it easier to do logical functions and condition signals for control and tracking in tough industrial settings.

The SN74LS32N is small, easy to integrate, works with TTL logic levels, is resistant to noise, and has a short transmission delay. These features make sure that the system works well, handles signals well, and fits in well with other digital systems.

For correct connections, voltage levels, and component values when using the SN74LS32N, check the datasheet and follow the recommended circuit design guidelines.


The SN74LS32N is a 4-channel OR gate IC that can be used in many different ways and is very important in digital logic applications. Its small 14-pin PDIP package and ability to work with TTL logic families make it easy to use in many different designs. The SN74LS32N makes it easier to plan and build logic circuits because it works reliably, is resistant to noise, and has a short propagation delay. It is great at logical processes, putting signals together, and making signal routing easier.

To get the most out of the SN74LS32N in your logic circuits, we recommend that you learn more about what it can do and talk to our experts at ICRFQ. Our team is ready to give you personalised tips and help so you can get the most out of this flexible IC.

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