SN74ALVTH16245VR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Level Shifter and Bus Transceiver
• Characteristics: High-speed, low-voltage, 16-bit bidirectional transceiver
• Package: 48-pin Very Thin Quad Flat Package (VQFN)
• Essence: Transfers data between two independent buses with different voltage levels
• Packaging/Quantity: Available in reels of 2500 units

Specifications

• Logic Family: ALVT
• Number of Bits: 16
• Supply Voltage Range: 1.2V to 3.6V
• Input Voltage Levels: Compatible with both TTL and CMOS
• Output Voltage Levels: Compatible with both TTL and CMOS
• Maximum Data Rate: 400 Mbps
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The SN74ALVTH16245VR has a total of 48 pins, which are divided into four groups:

• Group A (pins 1-12): Contains the input/output (I/O) pins for Port A.
• Group B (pins 13-24): Contains the I/O pins for Port B.
• Group C (pins 25-36): Contains the control pins for Port A.
• Group D (pins 37-48): Contains the control pins for Port B.

Each group consists of data pins, direction control pins, and output enable pins.

Functional Features

• Bidirectional Data Transfer: Allows data to be transferred in both directions between Port A and Port B.
• Voltage Level Translation: Converts signals from one voltage level to another, enabling communication between buses with different voltage levels.
• Automatic Direction Control: Determines the direction of data flow based on the state of the control pins.
• Output Enable Function: Enables or disables the outputs, providing flexibility in controlling the data flow.

Advantages and Disadvantages

Advantages: - High-speed operation - Wide supply voltage range - Compatibility with both TTL and CMOS voltage levels - Bidirectional data transfer capability - Automatic direction control simplifies system design

Disadvantages: - Limited to 16-bit data width - Requires careful consideration of voltage level compatibility between buses

Working Principles

The SN74ALVTH16245VR operates by receiving data from one bus (Port A) and transmitting it to another bus (Port B), or vice versa. The direction of data flow is determined by the control pins. When the control pins are set to a specific state, the transceiver automatically switches the direction of data transfer.

The voltage level translation feature ensures that signals from Port A, which may operate at a different voltage level than Port B, are properly converted to ensure reliable communication between the two buses.

Detailed Application Field Plans

The SN74ALVTH16245VR is commonly used in various applications, including:

1. Microcontroller Interfacing: Enables communication between microcontrollers operating at different voltage levels.
2. Memory Interfaces: Facilitates data transfer between memory modules with varying voltage requirements.
3. Communication Systems: Allows for signal transmission between different subsystems within a communication system.
4. Industrial Automation: Supports data exchange between devices operating at different voltage levels in industrial automation systems.

Detailed and Complete Alternative Models

1. SN74LVC245A: Similar functionality but operates at a lower voltage range (1.65V to 3.6V).
2. SN74LVCH16245A: Offers similar features but has a wider supply voltage range (1.2V to 5.5V).
3. SN74AVC16245: Provides bidirectional level shifting with higher data rates (up to 500 Mbps).

These alternative models offer similar functionality to the SN74ALVTH16245VR but may have different voltage ranges, data rates, or package options.

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