74LS08 AND Two Input Gate IC: Datasheet, Pinout and Voltage

UTMEL

Published: 21 October 2021 | Last Updated: 21 October 2021

14898

74LS08N

74LS08N

SIGNETICS CORP

74LS08N datasheet pdf and Unclassified product details from SIGNETICS CORP stock available at Utmel

Purchase Guide

74LS08 is a Quadruple 8-bit Two Input AND IC. This post mainly covers the datasheet, pinout, use, voltage, and other details about the 74LS08 gate IC. Furthermore, there is a huge range of semiconductors, capacitors, resistors, and ICs in stock. Welcome your RFQ!

Viewers you are watching MHB Channel01 on you tube. I have up loaded a video titled Introduction to digital AND logic gate IC 74LS08. In this video I have tried to convey basic information to our students for using AND gate IC.

Introduction to digital AND logic gate IC 74LS08

Overview of 74LS08

The 74LS08 AND Gate IC is part of the 74XXYY IC family. The chip contains four AND gates, each with two inputs, hence the name QUADRUPLE 2- INPUT AND GATE. The gates in the chip are designed by SCHOTTKY TRANSISTORS for high-speed logic operations.


74LS08 Pinout

The 74LS08 AND gate IC's pin diagram is given below. This IC has 14 pins, each of which is described below along with its function.

74ls08 PINOUT .jpg

74LS08 Pinout


Pin   NumberDescription
AND GATE 1
1A1-INPUT1 of GATE 1
2B1-INPUT2 of GATE 1
3Y1-OUTPUT of GATE1
AND GATE 2
4A2-INPUT1 of GATE 2
5B2-INPUT2 of GATE 2
6Y2-OUTPUT of GATE2
AND GATE 3
9A3-INPUT1 of GATE 3
10B3-INPUT2 of GATE 3
8Y3-OUTPUT of GATE3
AND GATE 4
12A4-INPUT1 of GATE 4
13B4-INPUT2 of GATE 4
11Y4-OUTPUT of GATE4
SHARED TERMINALS
7GND- connected to   ground
14VCC-Connected to a positive voltage to provide power to all four gates


74LS08 CAD Model

Symbol

74ls08 symbol.jpg

74LS08 Symbol


Footprint

74ls08 footprint.jpg

74LS08 Footprint


Specifications

SIGNETICS CORP 74LS08N technical specifications, attributes, parameters and parts with similar specifications to SIGNETICS CORP 74LS08N.
  • Type
    Parameter
  • Surface Mount

    having leads that are designed to be soldered on the side of a circuit board that the body of the component is mounted on.

    NO
  • Number of Terminals
    14
  • Operating Temperature (Max.)
    70°C
  • HTS Code

    HTS (Harmonized Tariff Schedule) codes are product classification codes between 8-1 digits. The first six digits are an HS code, and the countries of import assign the subsequent digits to provide additional classification. U.S. HTS codes are 1 digits and are administered by the U.S. International Trade Commission.

    8542.39.00.01
  • Terminal Position

    In electronic components, the term "Terminal Position" refers to the physical location of the connection points on the component where external electrical connections can be made. These connection points, known as terminals, are typically used to attach wires, leads, or other components to the main body of the electronic component. The terminal position is important for ensuring proper connectivity and functionality of the component within a circuit. It is often specified in technical datasheets or component specifications to help designers and engineers understand how to properly integrate the component into their circuit designs.

    DUAL
  • Terminal Form

    Occurring at or forming the end of a series, succession, or the like; closing; concluding.

    THROUGH-HOLE
  • Number of Functions
    4
  • Supply Voltage

    Supply voltage refers to the electrical potential difference provided to an electronic component or circuit. It is crucial for the proper operation of devices, as it powers their functions and determines performance characteristics. The supply voltage must be within specified limits to ensure reliability and prevent damage to components. Different electronic devices have specific supply voltage requirements, which can vary widely depending on their design and intended application.

    5V
  • JESD-30 Code

    JESD-30 Code refers to a standardized descriptive designation system established by JEDEC for semiconductor-device packages. This system provides a systematic method for generating designators that convey essential information about the package's physical characteristics, such as size and shape, which aids in component identification and selection. By using JESD-30 codes, manufacturers and engineers can ensure consistency and clarity in the specification of semiconductor packages across various applications and industries.

    R-PDIP-T14
  • Qualification Status

    An indicator of formal certification of qualifications.

    Not Qualified
  • Supply Voltage-Max (Vsup)

    The parameter "Supply Voltage-Max (Vsup)" in electronic components refers to the maximum voltage that can be safely applied to the component without causing damage. It is an important specification to consider when designing or using electronic circuits to ensure the component operates within its safe operating limits. Exceeding the maximum supply voltage can lead to overheating, component failure, or even permanent damage. It is crucial to adhere to the specified maximum supply voltage to ensure the reliable and safe operation of the electronic component.

    5.25V
  • Temperature Grade

    Temperature grades represent a tire's resistance to heat and its ability to dissipate heat when tested under controlled laboratory test conditions.

    COMMERCIAL
  • Supply Voltage-Min (Vsup)

    The parameter "Supply Voltage-Min (Vsup)" in electronic components refers to the minimum voltage level required for the component to operate within its specified performance range. This parameter indicates the lowest voltage that can be safely applied to the component without risking damage or malfunction. It is crucial to ensure that the supply voltage provided to the component meets or exceeds this minimum value to ensure proper functionality and reliability. Failure to adhere to the specified minimum supply voltage may result in erratic behavior, reduced performance, or even permanent damage to the component.

    4.75V
  • Family

    In electronic components, the parameter "Family" typically refers to a categorization or classification system used to group similar components together based on their characteristics, functions, or applications. This classification helps users easily identify and select components that meet their specific requirements. The "Family" parameter can include various subcategories such as resistors, capacitors, diodes, transistors, integrated circuits, and more. Understanding the "Family" of an electronic component can provide valuable information about its compatibility, performance specifications, and potential uses within a circuit or system. It is important to consider the "Family" parameter when designing or troubleshooting electronic circuits to ensure proper functionality and compatibility with other components.

    LS
  • Number of Inputs
    2
  • Logic IC Type

    Logic IC Type refers to the type of integrated circuit (IC) that is specifically designed to perform logical operations. These ICs are commonly used in digital electronic devices to process and manipulate binary data according to predefined logic functions. The Logic IC Type parameter typically specifies the specific logic family or technology used in the IC, such as TTL (Transistor-Transistor Logic), CMOS (Complementary Metal-Oxide-Semiconductor), or ECL (Emitter-Coupled Logic). Understanding the Logic IC Type is important for selecting the appropriate IC for a given application, as different logic families have varying characteristics in terms of speed, power consumption, and noise immunity.

    AND GATE
  • Propagation Delay (tpd)

    Propagation delay (tpd) is a crucial parameter in electronic components, especially in digital circuits. It refers to the time taken for a signal to travel from the input of a component to its output. This delay is caused by various factors such as the internal circuitry, interconnections, and the physical properties of the component. Propagation delay is essential to consider in designing circuits to ensure proper timing and functionality. It is typically measured in nanoseconds or picoseconds and plays a significant role in determining the overall performance and speed of electronic systems.

    20 ns
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74LS08 Features

  • Low power consumption

  • Typical Rise Time: 18ns

  • Typical Fall Time: 18ns

  • Operating voltage range: +4.75 to +5.25V

  • Recommended operating voltage: +5V

  • Maximum supply voltage: 7V

  • Maximum current allowed drawing through each gate output: 8mA

  • TTL outputs

  • Operating temperature: 0°C to 70°C

  • Storage Temperature: -65°C to 150°C


74LS08 Applications

  • Digital Electronics

  • Networking Devices

  • Servers

  • Memory Units

  • ALU

  • General-purpose AND logic operation

  • Measuring Instruments


74LS08 Equivalents

74LS73, 74LS00, 74LS02, 74LS04, 74LS138, SN54LS08, IC 7408, HEF4081


Where to Use 74LS08 AND Gate

1. The chip is primarily employed when AND logic is required. The chip has four AND gates, and we can use one or all of them at the same time.

2. The chip is employed in systems that require both high speed and operation. As previously stated, SCHOTTKY TRANSISTORS built the gates on the chip to reduce gate switching delays. As a result, the chip can do high-speed AND operations.

3. The 74LS08 is one of the most affordable AND logic ICs on the market. It is extremely popular and widely available.

4. TTL outputs are provided by the chip, which is required in some systems.


How to Use 74LS08 AND Gate

To comprehend the 74LS08 AND gate IC, we must first comprehend the operation of a single AND logic gate. In general, an AND logic gate consists of three sorts of combinations, each of which has similar outputs on specific inputs.

Below is a diagram of a transistor-based logic AND gate circuit. Two transistors are utilized as switches in the following circuit to change the output condition for different inputs. Both transistors in the IC 74LS08 AND logic gate are linked in series. The power is applied to the collector terminal of the first transistor, and the output is obtained at the emitter terminal of the second transistor.

 74ls08 input voltage.jpg

74LS08 Input Voltage

The two inputs are connected to the base terminal of both transistors. The inputs allow the current to travel between the two transistors. When the input signal is HIGH, current flows through the transistor, resulting in full voltages on the o/p pin.

In other cases, if one of the circuit's input pins is LOW, the o/p will also be LOW due to the current supply from the transistors. The output here will not be dependent on the type of AND gate, but will always be determined by the truth table of the AND gate, which is shown below.

A single AND gate or a combination of two AND gates cannot be used to create another logic gate, however, an AND logic gate can be used to create additional logic gates.

With just one NOT gate, an AND logic gate can be changed to a NAND logic gate. Other logic gates, such as XNOR and XOR, rely on AND logic gates; nevertheless, OR and NOT logic gates are required to create other logic gates.


74LS08 Dimensions

74ls08 dimensions1.jpg

74ls08 dimensions2.jpg

74LS08 Dimensions

74LS08 Manufacturer

Signetics is an American electronics manufacturer specifically established to make integrated circuits. Founded in 1961, they went on to develop several early microprocessors and support chips, as well as the widely used 555 timer chip. They were bought by Philips in 1975 and incorporated in Philips Semiconductors (now NXP).


Frequently Asked Questions

What is 74LS08 used for?

74LS08 is a Quadruple 8-bit Two Input AND IC. Gate AND gate is a digital circuit used to convert the logic state to a specific logic. In AND gate two logics state signals are used. The first one is HIGH, which is also known as 3-5Volts and the second one is LOW which is represented by 0-2.6Volts.

How many gates are there in a regular 74LS08 chip?

There are four AND gates in the chip and each gate has two inputs, hence the name Quadruple 2- Input AND Gate. IC 74LS08 uses only one single power supply and it also comes in multiple packages to solve the requirement according to the circuit.

What is the difference between 7400 and 74LS00?

The 74LS00 family improves technically on the 7400 families in two key areas: faster speed and lower power consumption. The only limitation of the 74LS00 family compared to the 7400 families is that the 74LS00 family can only source half as much current.

What is the difference between 74LS08 and 74HC08?

74ls08 is a TTL circuit with a working power supply voltage of 5V. 74hc08 is a CMOS circuit, the chip power supply operating voltage range is 2V ~ 6V.
74LS08N

SIGNETICS CORP

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