SN74ALVCH244NSR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Buffer/Line Driver
• Characteristics: High-speed, low-voltage, non-inverting
• Package: 20-pin small-outline integrated circuit (SOIC)
• Essence: Logic level translator/buffer
• Packaging/Quantity: Tape and reel, 2500 units per reel

Specifications

• Supply Voltage Range: 1.65V to 3.6V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Maximum Operating Frequency: 500 MHz
• Propagation Delay: 2.5 ns (typical)
• Output Drive Strength: ±24 mA
• ESD Protection: >2000V (Human Body Model)

Detailed Pin Configuration

The SN74ALVCH244NSR has a total of 20 pins, numbered as follows:

1. A1
2. Y1
3. A2
4. Y2
5. A3
6. Y3
7. A4
8. GND
9. Y4
10. OE#
11. A5
12. Y5
13. A6
14. Y6
15. A7
16. VCC
17. Y7
18. A8
19. Y8
20. A9

Functional Features

• Non-inverting buffer with 3-state outputs
• Supports bidirectional data flow
• Provides voltage level translation between different logic families
• High-speed operation suitable for high-frequency applications
• Low power consumption
• Schmitt-trigger inputs for noise immunity

Advantages and Disadvantages

Advantages: - Wide supply voltage range allows compatibility with various systems - High-speed operation enables efficient data transfer - 3-state outputs facilitate bus sharing and multiplexing - Schmitt-trigger inputs provide robustness against noise

Disadvantages: - Limited output drive strength may not be suitable for driving heavy loads - Not compatible with higher voltage logic families (e.g., TTL)

Working Principles

The SN74ALVCH244NSR is a non-inverting buffer that translates logic levels between different voltage domains. It operates by receiving input signals on the A1-A9 pins and providing corresponding output signals on the Y1-Y8 pins. The OE# pin controls the output enable/disable function.

When the OE# pin is low, the outputs are enabled and mirror the input signals. When the OE# pin is high, the outputs are in a high-impedance state, allowing other devices to drive the bus lines.

The device operates within a specified supply voltage range and provides fast propagation delay, making it suitable for high-speed applications.

Detailed Application Field Plans

The SN74ALVCH244NSR is commonly used in various digital systems where voltage level translation and buffering are required. Some typical application fields include:

1. Microcontrollers and microprocessors
2. Communication systems
3. Data acquisition systems
4. Industrial automation
5. Automotive electronics
6. Consumer electronics

In these applications, the SN74ALVCH244NSR helps interface different logic families operating at different voltage levels, ensuring proper signal integrity and reliable data transfer.

Detailed and Complete Alternative Models

1. SN74LVC244A: Similar functionality but operates at a lower voltage range (1.65V to 3.6V)
2. SN74LVCH244A: Higher drive strength variant of SN74ALVCH244NSR
3. SN74HCT244: Compatible with TTL logic family, operates at higher voltage levels (4.5V to 5.5V)
4. SN74LV1T244: Single-channel buffer with similar functionality, suitable for low-power applications

These alternative models offer different voltage ranges, drive strengths, and compatibility with other logic families, providing flexibility in selecting the most suitable device for specific requirements.

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