SN74LVTH16646DL

Overview

• Category: Integrated Circuit (IC)
• Use: Logic Level Translator
• Characteristics: High-speed, low-voltage, 16-bit bus transceiver with 3-state outputs
• Package: TSSOP (Thin Shrink Small Outline Package)
• Essence: Translates signals between different voltage levels in digital systems
• Packaging/Quantity: Available in reels of 2500 units

Specifications

• Supply Voltage Range: 2.7V to 3.6V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Operating Temperature Range: -40°C to +85°C
• Maximum Propagation Delay: 4.5ns
• Maximum Operating Frequency: 200MHz

Pin Configuration

The SN74LVTH16646DL has a total of 56 pins, which are divided into four groups:

1. Group A (Pins 1-14): Data Inputs/Outputs (D1-D14)
2. Group B (Pins 15-28): Control Inputs (G, OE*)
3. Group C (Pins 29-42): Data Inputs/Outputs (D15-D28)
4. Group D (Pins 43-56): Control Inputs (G, OE*)

Functional Features

• Bidirectional voltage translation between two independent buses
• Supports mixed-mode signal operation on each port
• 3-state outputs for bus isolation when disabled
• Provides both level shifting and bus buffering capabilities
• Low power consumption
• ESD protection on all inputs and outputs

Advantages and Disadvantages

Advantages: - High-speed operation allows for efficient data transfer - Wide supply voltage range enables compatibility with various systems - 3-state outputs provide flexibility in bus design - ESD protection ensures reliability in harsh environments

Disadvantages: - Limited number of data inputs/outputs (28 in total) - Not suitable for applications requiring higher voltage translation levels - Relatively small package size may pose challenges in certain designs

Working Principles

The SN74LVTH16646DL operates by receiving data from one bus and translating it to the voltage level required by another bus. The control inputs (G, OE*) determine the direction of data flow and enable/disable the outputs. When the outputs are disabled, they enter a high-impedance state, allowing other devices to drive the bus.

Detailed Application Field Plans

The SN74LVTH16646DL is commonly used in various digital systems that require voltage level translation. Some specific application fields include:

1. Microcontrollers: 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: Allows for signal conversion between different communication protocols.
4. Industrial Automation: Used in PLCs (Programmable Logic Controllers) to interface with sensors and actuators operating at different voltage levels.

Alternative Models

1. SN74LVC4245A: 8-bit bidirectional voltage translator with automatic direction sensing.
2. TXB0108PWR: 8-bit non-inverting translator with 3-state outputs.
3. PCA9306DCUR: Dual bidirectional I2C-bus and SMBus voltage-level translator.

These alternative models offer similar functionality and can be considered as substitutes for the SN74LVTH16646DL in different applications.

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