DM74LS240WM

Introduction

The DM74LS240WM is an integrated circuit (IC) made by Texas Instruments. It is classified as a type of quad three-state bus transceiver. It has a 16-pin dual in-line package (DIP) form factor and is able to provide three-state logic level conversions between two buses. This integrated chip is part of the larger 74LS series which are low-power Schottky ICs.

The DM74LS240WM supports a wide range of applications, including voltage level shifting, data lines for general purpose I/O, and control lines for peripheral chips. It is also used for low frequency data transmission, EIA/TIA standard RS232, IEEE-488 and system buses.

Application Field

The DM74LS240WM has a wide range of applications and can be incorporated into a variety of different circuits. It is ideal for use in logic systems, data interfaces and high speed systems. The chip is capable of being used as a buffer, tri-stated line repeater and level converter.

The DM74LS240WM is most commonly used as a buffer in a variety of electronic devices. It provides a voltage level conversion between two different device families. It can also be used as a level shifter to ensure compatibility between different logic families.

Working Principle

The DM74LS240WM consists of four tri-state buffers that are controlled by five active-low enable inputs. The four tri-state buffers enable the DM74LS240WM to provide three-state logic levels conversions between two buses. When an input is enabled, the brain buffer transmits the input data on to the output bus. When the enable input is false, the output is tri-stated or in a high impedance state.

The DM74LS240WM also has four active-high enable inputs. When this is enabled, the input data is inverted and output on the output bus. In this way, the DM74LS240WM can provide both non-inverting and inverting logic level conversions.

Conclusion

The DM74LS240WM is a versatile integrated circuit (IC) with a wide range of applications. It is used as a buffer, tri-status line repeater and level converter. It is part of the larger 74LS series of low power Schottky ICs and it is ideal for use in logic systems, data interfaces and high speed systems.