Encyclopedia Entry: 74ALVCH32245ZKER

Product Information Overview

• Category: Integrated Circuit (IC)
• Use: Logic Level Shifter
• Characteristics: High-speed, low-power, bidirectional voltage translation
• Package: 48-pin TSSOP (Thin Shrink Small Outline Package)
• Essence: Translates signals between two different voltage levels
• Packaging/Quantity: Available in reels of 2500 units

Specifications

• Supply Voltage: 1.2V to 3.6V
• Input Voltage Range (A Port): 0V to VCC_A
• Input Voltage Range (B Port): 0V to VCC_B
• Output Voltage Range (A/B Ports): 0V to VCCA/VCCB
• Propagation Delay: 2.5ns (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The 74ALVCH32245ZKER IC has a total of 48 pins, which are organized as follows:

• Pin 1: OE (Output Enable) Input for Port A
• Pin 2: A1 (Data Input/Output) for Port A
• Pin 3: A2 (Data Input/Output) for Port A
• ...
• Pin 46: B13 (Data Input/Output) for Port B
• Pin 47: B14 (Data Input/Output) for Port B
• Pin 48: GND (Ground)

Functional Features

• Bidirectional voltage translation between two different voltage domains
• Supports level shifting from 1.2V to 3.6V
• High-speed operation with low propagation delay
• Output enable control for each port allows independent operation
• 3-state outputs for easy bus sharing

Advantages and Disadvantages

Advantages: - Enables seamless communication between devices operating at different voltage levels - Low power consumption - High-speed operation - Independent control of each port's output enable signal - Suitable for various applications due to its wide supply voltage range

Disadvantages: - Limited number of data input/output pins (14 per port) - Requires careful consideration of voltage compatibility to avoid damage or incorrect signal translation

Working Principles

The 74ALVCH32245ZKER is a bidirectional voltage level shifter designed to translate signals between two different voltage domains. It operates by utilizing a combination of CMOS technology and level shifting circuitry. The IC consists of two ports, Port A and Port B, which can be independently controlled.

When the output enable (OE) signal for a specific port is active, the corresponding data input/output pins allow bidirectional signal transmission between the two voltage domains. The IC ensures proper voltage translation by using level shifting techniques that maintain signal integrity and minimize propagation delay.

Detailed Application Field Plans

The 74ALVCH32245ZKER is widely used in various applications where voltage translation between different logic levels is required. Some common application fields include:

1. Microcontroller Interfacing: Facilitates communication between microcontrollers operating at different voltage levels.
2. Mixed Voltage Systems: Enables integration of components with different voltage requirements in mixed voltage systems.
3. Communication Interfaces: Provides level shifting capabilities for UART, SPI, I2C, and other communication interfaces.
4. Memory Interfaces: Allows interfacing between memory modules operating at different voltage levels.
5. Sensor Networks: Supports voltage translation in sensor networks with multiple devices operating at different voltages.

Detailed and Complete Alternative Models

1. SN74LVC1T45: Single-bit, dual-supply voltage level translator with 3-state outputs.
2. TXB0108: Eight-channel bidirectional voltage-level translator with automatic direction sensing.
3. PCA9306: Dual bidirectional I2C-bus and SMBus voltage-level translator.

These alternative models offer similar functionality and can be considered as alternatives to the 74ALVCH32245ZKER based on specific application requirements.

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