74LCX244MTR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Logic Level Shifter
• Characteristics: Low Voltage, High-Speed, Bidirectional Buffer/Line Driver
• Package: TSSOP (Thin Shrink Small Outline Package)
• Essence: The 74LCX244MTR is a logic level shifter IC that provides bidirectional voltage translation between low-voltage digital systems.
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage: 1.65V to 3.6V
• Logic Family: LCX
• Number of Channels: 8
• Input/Output Type: CMOS
• Propagation Delay: 4.5ns (Max)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The 74LCX244MTR has a total of 20 pins, which are assigned as follows:

• Pins 1 to 8: A1 to A8 (Inputs/Outputs)
• Pins 9, 10: GND (Ground)
• Pins 11 to 18: B1 to B8 (Inputs/Outputs)
• Pin 19: OE (Output Enable)
• Pin 20: VCC (Power Supply)

Functional Features

• Bidirectional voltage translation between low-voltage digital systems.
• Provides voltage level shifting from 1.65V to 3.6V.
• Allows interfacing between devices operating at different voltage levels.
• High-speed operation with minimal propagation delay.
• CMOS technology ensures low power consumption.

Advantages and Disadvantages

Advantages

• Enables seamless communication between low-voltage systems.
• Supports bidirectional data transfer.
• Compact package size allows for space-efficient designs.
• Low power consumption extends battery life in portable devices.

Disadvantages

• Limited voltage range (1.65V to 3.6V).
• Not suitable for high-voltage applications.
• Requires careful consideration of input and output voltage levels.

Working Principles

The 74LCX244MTR utilizes CMOS technology to achieve bidirectional voltage translation. It consists of eight channels, each capable of shifting the logic levels between two different voltage domains. The direction of data flow is controlled by the OE (Output Enable) pin. When OE is low, the IC operates in normal mode, allowing bidirectional data transfer. When OE is high, the outputs are disabled, effectively isolating the two voltage domains.

Detailed Application Field Plans

The 74LCX244MTR finds application in various scenarios where voltage level shifting is required. Some common use cases include:

1. Interfacing between microcontrollers operating at different voltage levels.
2. Communication between low-power sensors and microprocessors.
3. Level translation in battery-powered devices, such as smartphones and tablets.
4. Signal conditioning in mixed-voltage systems.

Detailed and Complete Alternative Models

• 74LVC244APW: Similar functionality with a wider voltage range (1.2V to 5.5V).
• SN74LVC244ADGVR: Offers similar features with a different package (TSSOP-20).

These alternative models provide similar logic level shifting capabilities but may have different voltage ranges or package options to suit specific design requirements.

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