SN74ALVCH16245KR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Level Shifter/Buffer
• Characteristics: Bi-directional, 16-bit, voltage level translation
• Package: 48-pin, plastic quad flat package (PQFP)
• Essence: Translates signals between different voltage levels
• Packaging/Quantity: Tape and reel, 2500 units per reel

Specifications

• Supply Voltage Range: 1.65V to 3.6V
• Input Voltage Range: -0.5V to VCC + 0.5V
• Output Voltage Range: 0V to VCC
• Maximum Operating Frequency: 400MHz
• Propagation Delay: 2.8ns (typical)
• Output Drive Strength: ±24mA
• ESD Protection: >2000V (Human Body Model)

Detailed Pin Configuration

The SN74ALVCH16245KR 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): Data I/O (A1-A12)
• Group B (pins 13-24): Data I/O (B1-B12)
• Group C (pins 25-36): Enable (G1-G12)
• Group D (pins 37-48): Power/Ground (VCC, GND)

Functional Features

• Bi-directional voltage level translation between two independent buses
• Supports both uni-directional and bi-directional data flow
• Provides non-inverting level shifting with 3-state outputs
• Allows mixed-voltage mode operation
• Low power consumption and high-speed operation

Advantages and Disadvantages

Advantages: - Wide supply voltage range allows compatibility with various systems - High-speed operation enables efficient data transfer - Bi-directional capability simplifies circuit design - 3-state outputs provide flexibility in bus sharing applications

Disadvantages: - Limited number of I/O pins (16-bit) - Not suitable for high-voltage applications (>3.6V)

Working Principles

The SN74ALVCH16245KR is designed to translate signals between two buses operating at different voltage levels. It utilizes a combination of CMOS and BiCMOS technologies to achieve fast switching speeds and low power consumption.

The device consists of 16 bidirectional buffers, which can be independently enabled or disabled using the control inputs. When enabled, the buffers allow data to flow between the A and B ports. The direction of data flow is determined by the voltage levels on the respective ports.

The SN74ALVCH16245KR also features 3-state outputs, which can be used to disconnect the device from the bus when not in use. This allows multiple devices to share the same bus without causing conflicts.

Detailed Application Field Plans

The SN74ALVCH16245KR is commonly used in various applications that require voltage level translation, such as:

1. Microcontroller interfacing with different logic families
2. Communication systems with mixed-voltage interfaces
3. Memory modules with different voltage requirements
4. Industrial automation and control systems
5. Automotive electronics

Detailed and Complete Alternative Models

1. TXS0108E: 8-bit bi-directional voltage level translator
2. PCA9306: Dual bidirectional I2C-bus and SMBus voltage-level translator
3. SN74LVC4245A: Octal dual-supply translating transceiver

These alternative models offer similar functionality and can be considered as alternatives to the SN74ALVCH16245KR based on specific application requirements.

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