SN74ALVTHR16245GR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Level Shifter and Bus Transceiver
• Characteristics: Bi-directional voltage level translation, high-speed operation, low power consumption
• Package: 48-pin TSSOP (Thin Shrink Small Outline Package)
• Essence: Translates signals between different voltage levels in digital systems
• 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: 400 MHz
• Number of Channels: 16
• Input/Output Type: Tri-State
• Logic Family: ALVT (Advanced Low-Voltage CMOS)

Detailed Pin Configuration

The SN74ALVTHR16245GR has a total of 48 pins, which are divided into four groups of 12 pins each. The pin configuration is as follows:

• Group A (Pins 1-12): Channel 1 Inputs/Outputs
• Group B (Pins 13-24): Channel 2 Inputs/Outputs
• Group C (Pins 25-36): Channel 3 Inputs/Outputs
• Group D (Pins 37-48): Channel 4 Inputs/Outputs

Each group consists of input pins (A1-A12, B1-B12, C1-C12, D1-D12) and output pins (Y1-Y12, Y13-Y24, Y25-Y36, Y37-Y48). Additionally, there are control pins for enabling/disabling the channels.

Functional Features

• Bi-directional voltage level translation between two voltage domains
• Supports bidirectional data flow with direction control pins
• High-speed operation allows for efficient data transfer
• Low power consumption for energy-efficient designs
• Tri-state outputs provide flexibility in bus systems

Advantages and Disadvantages

Advantages: - Enables seamless communication between devices operating at different voltage levels - Supports high-speed data transmission - Low power consumption helps prolong battery life in portable devices - Tri-state outputs allow multiple devices to share a common bus

Disadvantages: - Limited to voltage translation within the specified supply voltage range - Requires careful consideration of signal integrity when translating between different voltage domains - May introduce additional propagation delay in the system

Working Principles

The SN74ALVTHR16245GR operates by using a combination of MOSFETs and CMOS technology to perform voltage level translation. It consists of a bidirectional transceiver with separate voltage supply pins for each voltage domain. The input signals are translated to the corresponding output voltage level based on the logic levels of the control pins.

When the direction control pin is set to transmit mode, the input signals from one voltage domain are translated to the other voltage domain and appear at the corresponding output pins. In receive mode, the input signals from the other voltage domain are translated to the local voltage domain and appear at the output pins.

Detailed Application Field Plans

The SN74ALVTHR16245GR is commonly used in various digital systems where voltage level translation is required. Some specific application areas include:

1. Microcontrollers: Facilitates communication between microcontrollers operating at different voltage levels.
2. Communication Interfaces: Enables compatibility between devices with different voltage requirements, such as UART, SPI, and I2C interfaces.
3. Memory Interfaces: Allows interfacing between memory modules operating at different voltage levels, such as DDR, SRAM, or Flash memory.
4. Industrial Automation: Used in PLCs (Programmable Logic Controllers) and industrial control systems to interface between different voltage domains.
5. Consumer Electronics: Enables communication between components in devices like smartphones, tablets, and gaming consoles.

Detailed and Complete Alternative Models

1. SN74LVC245A: Similar functionality with a lower operating voltage range (1.65V to 3.6V).
2. TXB0108: Eight-channel bidirectional level shifter with automatic direction control.
3. PCA9306: Dual bidirectional I2C-bus and SMBus voltage-level translator.
4. CD4504B: Hex non-inverting level shifter for translating TTL/CMOS signals.

These alternative models offer similar voltage level translation capabilities but may have different specifications or package options.

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