SN74LVCH244APW

Product Overview

• Category: Integrated Circuit (IC)
• Use: Buffer/Line Driver
• Characteristics: Low-Voltage, High-Speed, Octal Bus Buffer with 3-State Outputs
• Package: TSSOP (Thin Shrink Small Outline Package)
• Essence: This IC is designed to provide buffering and line driving capabilities for digital signals in various electronic applications.
• Packaging/Quantity: Available in tape and reel packaging, with a quantity of 2500 units per reel.

Specifications

• Supply Voltage Range: 1.65V to 5.5V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Maximum Operating Frequency: 400 MHz
• Number of Channels: 8
• Output Drive Capability: ±24 mA
• Propagation Delay: 2.7 ns (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The SN74LVCH244APW has a total of 20 pins, which are assigned as follows:

• Pin 1: Output Enable (OE) 1
• Pin 2: A1
• Pin 3: Y1
• Pin 4: A2
• Pin 5: Y2
• Pin 6: A3
• Pin 7: Y3
• Pin 8: GND (Ground)
• Pin 9: Y4
• Pin 10: A4
• Pin 11: Y5
• Pin 12: A5
• Pin 13: Y6
• Pin 14: A6
• Pin 15: Y7
• Pin 16: VCC (Supply Voltage)
• Pin 17: OE2
• Pin 18: Y8
• Pin 19: A7
• Pin 20: OE3

Functional Features

• Octal buffer with 3-state outputs.
• Provides non-inverting level shifting and line driving capabilities.
• Supports bidirectional data flow.
• Allows multiple devices to be connected to a common bus.
• Enables high-speed data transmission.

Advantages and Disadvantages

Advantages: - Low-voltage operation allows for compatibility with various digital systems. - High-speed performance enables efficient data transfer. - 3-state outputs provide flexibility in controlling the bus. - Compact TSSOP package saves board space.

Disadvantages: - Limited output drive capability may not be suitable for high-current applications. - Not suitable for voltage levels beyond the specified range.

Working Principles

The SN74LVCH244APW operates by receiving digital input signals on its input pins (A1-A7) and providing buffered output signals on the corresponding output pins (Y1-Y8). The Output Enable (OE) pins control the state of the outputs, allowing them to be either active or in a high-impedance state. When the OE pin is low, the outputs are enabled and actively driven. Conversely, when the OE pin is high, the outputs are disabled and enter a high-impedance state.

Detailed Application Field Plans

The SN74LVCH244APW finds application in various electronic systems where buffering and line driving of digital signals are required. Some specific application areas include:

1. Microcontrollers and Microprocessors: Used to interface between the microcontroller/microprocessor and external devices, such as memory modules, displays, and sensors.
2. Communication Systems: Employed in data communication interfaces, such as UART (Universal Asynchronous Receiver-Transmitter) and SPI (Serial Peripheral Interface).
3. Industrial Automation: Utilized in control systems, PLCs (Programmable Logic Controllers), and motor drives for signal conditioning and level shifting.
4. Automotive Electronics: Integrated into automotive control units, infotainment systems, and instrument clusters for signal buffering and driving.

Detailed and Complete Alternative Models

1. SN74LVCH244A-Q1: Automotive-grade version of SN74LVCH244APW, designed for extended temperature range and enhanced reliability in automotive applications.
2. SN74LVC244A: Similar octal buffer IC with 5V-tolerant inputs, suitable for mixed-voltage systems.
3. SN74LVTH244A: Octal buffer IC with 3-state outputs and higher output drive capability, suitable for applications requiring stronger output currents.

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