SN74LVTH646DBRE4

Product Overview

• Category: Integrated Circuit (IC)
• Use: Level Shifter and Bus Transceiver
• Characteristics: High-speed, low-voltage, 3-state outputs
• Package: SSOP (Shrink Small Outline Package)
• Essence: Bi-directional voltage level translator
• Packaging/Quantity: Tape and Reel, 2500 pieces per reel

Specifications

• Supply Voltage Range: 2.7V to 3.6V
• Logic Family: LVTH
• Number of Channels: 8
• Input/Output Type: CMOS/TTL compatible
• Output Drive Capability: ±24mA
• Propagation Delay Time: 3.5ns (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The SN74LVTH646DBRE4 has a total of 24 pins. The pin configuration is as follows:

1. OE (Output Enable) 1
2. A1 (Data Input/Output) 1
3. B1 (Data Input/Output) 1
4. GND (Ground)
5. B2 (Data Input/Output) 2
6. A2 (Data Input/Output) 2
7. OE (Output Enable) 2
8. VCC (Supply Voltage)
9. DIR (Direction Control)
10. A3 (Data Input/Output) 3
11. B3 (Data Input/Output) 3
12. OE (Output Enable) 3
13. GND (Ground)
14. B4 (Data Input/Output) 4
15. A4 (Data Input/Output) 4
16. OE (Output Enable) 4
17. VCC (Supply Voltage)
18. B5 (Data Input/Output) 5
19. A5 (Data Input/Output) 5
20. OE (Output Enable) 5
21. GND (Ground)
22. A6 (Data Input/Output) 6
23. B6 (Data Input/Output) 6
24. OE (Output Enable) 6

Functional Features

• Bi-directional voltage level translation between two different voltage domains.
• Provides bidirectional data transfer capability with direction control.
• Supports high-speed operation with low propagation delay.
• 3-state outputs allow multiple devices to share a common bus.

Advantages and Disadvantages

Advantages: - High-speed operation enables efficient data transfer. - Low-voltage operation makes it suitable for low-power applications. - Bi-directional functionality simplifies circuit design. - 3-state outputs allow for bus sharing among multiple devices.

Disadvantages: - Limited supply voltage range restricts its use in certain applications. - Propagation delay may affect timing-sensitive systems.

Working Principles

The SN74LVTH646DBRE4 is designed to translate signals between two voltage domains, typically CMOS and TTL compatible levels. It utilizes a combination of level shifters and transceivers to achieve bi-directional data transfer. The direction control pin (DIR) determines the data flow direction. When enabled, the device translates the input signals from one voltage domain to the other and vice versa. The 3-state outputs allow the device to be disconnected from the bus when not actively transmitting or receiving data.

Detailed Application Field Plans

The SN74LVTH646DBRE4 is commonly used in various applications that require voltage level translation and bidirectional data transfer. Some typical application fields include:

1. Microcontroller interfacing with different logic families.
2. Communication systems involving multiple voltage domains.
3. Industrial automation and control systems.
4. Data acquisition and processing systems.
5. Memory interfacing in embedded systems.

Detailed and Complete Alternative Models

1. SN74LVC646ADW: Similar functionality with a different package (SOIC).
2. SN74LVTH16245ADGGR: 16-bit version with similar characteristics.
3. SN74AVC4T245PW: 4-bit level shifter with similar features.

These alternative models provide similar voltage level translation capabilities and can be considered as substitutes for the SN74LVTH646DBRE4 depending on specific requirements.

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