SN74LVCH244ADBQR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Buffer/Line Driver
• Characteristics: Low-Voltage, High-Speed, Octal Bus Buffer with 3-State Outputs
• Package: 20-pin SSOP (Shrink Small Outline Package)
• Essence: The SN74LVCH244ADBQR is a versatile buffer IC that provides high-speed signal buffering and line driving capabilities for various digital applications.
• Packaging/Quantity: Available in tape and reel packaging, with 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: 200MHz
• Number of Buffers/Drivers: 8
• Output Current: ±24mA
• Propagation Delay Time: 2.7ns (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The SN74LVCH244ADBQR has a total of 20 pins, which are assigned specific functions as follows:

1. A1 - Input 1
2. Y1 - Output 1
3. A2 - Input 2
4. Y2 - Output 2
5. GND - Ground
6. Y3 - Output 3
7. A3 - Input 3
8. Y4 - Output 4
9. A4 - Input 4
10. VCC - Power Supply
11. OE - Output Enable
12. Y5 - Output 5
13. A5 - Input 5
14. Y6 - Output 6
15. A6 - Input 6
16. Y7 - Output 7
17. A7 - Input 7
18. Y8 - Output 8
19. A8 - Input 8
20. GND - Ground

Functional Features

• Octal buffer with 3-state outputs.
• Provides non-inverting buffering of signals.
• High-speed operation suitable for use in various digital systems.
• Low-voltage operation allows compatibility with a wide range of devices.
• 3-state outputs enable easy bus sharing and interfacing.

Advantages and Disadvantages

Advantages: - High-speed operation allows for efficient signal buffering. - Low-voltage capability ensures compatibility with modern devices. - 3-state outputs facilitate bus sharing and interfacing. - Versatile application possibilities due to octal configuration.

Disadvantages: - Limited output current may not be suitable for high-power applications. - Propagation delay time may affect timing-sensitive systems.

Working Principles

The SN74LVCH244ADBQR operates by receiving input signals on the A1-A8 pins and providing buffered outputs on the Y1-Y8 pins. The OE (Output Enable) pin controls the 3-state 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 enter a high-impedance state, effectively disconnecting them from the bus.

Detailed Application Field Plans

The SN74LVCH244ADBQR can be used in various applications, including but not limited to: - Data communication systems - Microprocessor/Controller interfacing - Memory address decoding - Bus driving and buffering - Signal level shifting

Detailed and Complete Alternative Models

• SN74LVC244A: Similar octal buffer IC with 5V-tolerant inputs and outputs.
• SN74LVTH244A: Octal buffer IC with 3-state outputs and adjustable output drive strength.
• SN74LVCH245A: Octal bus transceiver IC with 3-state outputs.

These alternative models offer similar functionality and can be considered as substitutes for the SN74LVCH244ADBQR, depending on specific application requirements.

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