SN74LVTH2952NSR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Logic Level Translator
• Characteristics: High-speed, low-voltage, 8-bit bidirectional translator
• Package: NSR package (Plastic, 56-pin, small-outline package)
• Essence: Logic level translation between different voltage domains
• Packaging/Quantity: Available in reels of 2500 units

Specifications

• Supply Voltage Range: 1.65V to 3.6V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Maximum Operating Frequency: 400MHz
• Number of Channels: 8
• Propagation Delay: 2.5ns (Max) at 3.3V
• Low Power Consumption: ICC = 4μA (Max) at 3.3V

Detailed Pin Configuration

The SN74LVTH2952NSR has a total of 56 pins, which are divided into various functional groups:

• VCCA, VCCB: Power supply pins for respective voltage domains
• GND: Ground pin
• OE: Output Enable pin
• DIR: Direction control pin
• A1-A8: Input/output pins for voltage domain A
• B1-B8: Input/output pins for voltage domain B

For the detailed pin configuration diagram, please refer to the datasheet.

Functional Features

• Bidirectional Voltage Translation: Allows seamless communication between two voltage domains.
• Automatic Direction Control: The DIR pin controls the direction of data flow.
• Output Enable Function: The OE pin enables/disables the outputs.
• High-Speed Operation: Supports high-frequency applications up to 400MHz.
• Low Power Consumption: Consumes minimal power during operation.

Advantages and Disadvantages

Advantages: - Wide Supply Voltage Range: Can operate with a wide range of supply voltages. - Bidirectional Translation: Simplifies communication between different voltage domains. - High-Speed Operation: Suitable for high-frequency applications.

Disadvantages: - Limited Channel Count: Only supports 8 channels, which may be insufficient for certain applications. - Non-Inverting Translation: Does not support inverting translation, limiting its compatibility with certain systems.

Working Principles

The SN74LVTH2952NSR utilizes a combination of MOSFETs and CMOS technology to achieve logic level translation. It operates by detecting the input voltage levels and translating them to the corresponding output voltage levels based on the direction control signal. The automatic direction control feature ensures bidirectional data flow between the two voltage domains.

Detailed Application Field Plans

The SN74LVTH2952NSR is commonly used in various applications that require voltage level translation, such as:

1. Microcontroller Interfaces: Facilitates communication between microcontrollers operating at different voltage levels.
2. Memory Interfaces: Enables data transfer between memory modules with varying voltage requirements.
3. Communication Systems: Supports voltage level translation in serial communication interfaces like UART, SPI, and I2C.
4. Industrial Automation: Used in industrial control systems to interface between different voltage domains.

Detailed and Complete Alternative Models

1. SN74LVC4245APWR: 8-bit dual-supply bus transceiver with configurable voltage translation.
2. TXB0108PWR: 8-bit bidirectional voltage-level translator with automatic direction sensing.
3. PCA9306DCUR: Dual bidirectional I2C-bus and SMBus voltage-level translator.

These alternative models offer similar functionality and can be considered as alternatives to the SN74LVTH2952NSR.

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