SN74ALS623ADWRE4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Logic Level Shifter
• Characteristics: High-speed, TTL-compatible, 3-state output
• Package: SOIC (Small Outline Integrated Circuit)
• Essence: Logic level shifting between different voltage domains
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage: 2V to 6V
• Logic Family: ALS
• Number of Channels: 8
• Input Voltage Levels: TTL
• Output Voltage Levels: TTL
• Output Current: ±24mA
• Propagation Delay: 9ns (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The SN74ALS623ADWRE4 has a total of 20 pins. The pin configuration is as follows:

1. A1: Channel 1 Input
2. B1: Channel 1 Output
3. GND: Ground
4. A2: Channel 2 Input
5. B2: Channel 2 Output
6. VCC: Supply Voltage
7. A3: Channel 3 Input
8. B3: Channel 3 Output
9. A4: Channel 4 Input
10. B4: Channel 4 Output
11. A5: Channel 5 Input
12. B5: Channel 5 Output
13. A6: Channel 6 Input
14. B6: Channel 6 Output
15. A7: Channel 7 Input
16. B7: Channel 7 Output
17. A8: Channel 8 Input
18. B8: Channel 8 Output
19. OE: Output Enable
20. GND: Ground

Functional Features

• Logic level shifting between different voltage domains
• High-speed operation
• TTL-compatible inputs and outputs
• 3-state output allows for bus sharing

Advantages and Disadvantages

Advantages

• Allows interfacing between devices operating at different voltage levels
• High-speed operation enables efficient data transfer
• TTL compatibility ensures compatibility with a wide range of devices
• 3-state output facilitates bus sharing in multi-device systems

Disadvantages

• Limited to TTL voltage levels, not suitable for other logic families
• Requires careful consideration of voltage compatibility to avoid damage to connected devices

Working Principles

The SN74ALS623ADWRE4 is designed to shift logic levels between different voltage domains. It operates by receiving input signals from one voltage domain and translating them to the corresponding output signals in another voltage domain. The device uses TTL-compatible inputs and outputs, ensuring compatibility with a wide range of devices.

The 3-state output feature allows multiple devices to share a common bus. When the output enable (OE) pin is high, the outputs are in a high-impedance state, allowing other devices to drive the bus. When OE is low, the outputs actively drive the bus.

Detailed Application Field Plans

The SN74ALS623ADWRE4 can be used in various applications where logic level shifting is required. Some potential application fields include:

1. Microcontroller interfacing with different voltage peripherals
2. Communication interfaces between devices operating at different voltage levels
3. Data transmission between systems with varying logic voltage requirements
4. Level shifting in industrial automation systems
5. Interface conversion in automotive electronics

Detailed and Complete Alternative Models

1. SN74LVC4245APWR: Octal Bus Transceiver with 3-State Outputs
2. SN74HCT125N: Quad Bus Buffer Gates with 3-State Outputs
3. SN74LVCH245APWR: Octal Bus Transceiver with 3-State Outputs
4. SN74LVC1T45DCKR: Single Bit Dual-Supply Bus Transceiver

These alternative models offer similar functionality and can be considered as alternatives to the SN74ALS623ADWRE4 depending on specific requirements.

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