SN74ALVTH16245GR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Level Shifter and Bus Transceiver
• Characteristics: High-speed, low-voltage, 16-bit bidirectional transceiver
• Package: TSSOP (Thin Shrink Small Outline Package)
• Essence: Transfers data between two voltage domains with different logic levels
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Logic Family: ALVT (Advanced Low-Voltage CMOS)
• Number of Bits: 16
• Supply Voltage Range: 1.65V to 3.6V
• Input/Output Voltage Levels: 1.2V to 3.6V
• Maximum Data Rate: 400 Mbps
• Output Drive Strength: ±12 mA
• ESD Protection: >2000V (Human Body Model)

Detailed Pin Configuration

The SN74ALVTH16245GR has a total of 48 pins, which are divided into four groups:

Group A (Supply and Ground Pins)

1. VCCA - Supply voltage for Port A
2. GND - Ground for Port A
3. VCCB - Supply voltage for Port B
4. GND - Ground for Port B

Group B (Port A Pins)

1. Ax[15:8] - Bidirectional data pins for Port A (MSB to LSB)
2. OEAB - Output Enable for Port A
3. DIR - Direction control input
4. GND - Ground for Port A

Group C (Port B Pins)

1. Bx[15:8] - Bidirectional data pins for Port B (MSB to LSB)
2. OEBA - Output Enable for Port B
3. GND - Ground for Port B
4. VREF - Reference voltage for level shifting

Group D (Control and Miscellaneous Pins)

1. GND - Ground for control pins
2. VCC - Supply voltage for control pins
3. OE - Output Enable for both Ports A and B
4. GND - Ground for control pins

Functional Features

• Bidirectional data transfer between two voltage domains
• Automatic direction control based on DIR pin
• Output enable control for individual ports
• Level shifting capability for different logic levels
• High-speed operation with low power consumption
• ESD protection for robustness against electrostatic discharge

Advantages and Disadvantages

Advantages

• Supports bidirectional communication between different voltage domains
• Provides level shifting functionality for seamless integration of devices with varying logic levels
• High-speed operation allows for efficient data transfer
• Low power consumption for energy-efficient applications
• Robust ESD protection ensures reliability in harsh environments

Disadvantages

• Limited to 16-bit data width, may not be suitable for larger data buses
• Requires careful consideration of voltage compatibility between connected devices
• Sensitive to noise and signal integrity issues due to high-speed operation

Working Principles

The SN74ALVTH16245GR acts as a bidirectional level shifter and bus transceiver. It enables data transfer between two voltage domains with different logic levels. The direction of data flow is controlled by the DIR pin. When DIR is set to logic high, data is transferred from Port A to Port B, and when DIR is set to logic low, data is transferred from Port B to Port A.

The output enable pins (OEAB and OEBA) allow individual port control. When either OEAB or OEBA is set to logic high, the corresponding port is disabled, preventing data transfer. When both OEAB and OEBA are set to logic low, both ports are enabled for bidirectional data transfer.

The SN74ALVTH16245GR utilizes level shifting techniques to ensure compatibility between different logic voltage levels. It can handle input and output voltages ranging from 1.2V to 3.6V, making it suitable for various applications.

Detailed Application Field Plans

The SN74ALVTH16245GR is commonly used in the following application fields:

1. Microcontroller Interfacing: It facilitates communication between microcontrollers operating at different voltage levels.
2. Memory Interfaces: It enables data transfer between memory modules with varying logic voltage requirements.
3. Communication Systems: It serves as a level shifter in serial communication interfaces like UART, SPI, and I2C.
4. Industrial Automation: It allows integration of devices with different logic levels in control systems.
5. Automotive Electronics: It provides level shifting capabilities for automotive applications requiring communication between components with different voltage levels.

Detailed and Complete Alternative Models

1. SN74LVC245A: 8-bit bidirectional level shifter and bus transceiver with similar characteristics and package options.
2. SN74LVCH16245A: 16