Encyclopedia Entry: 74ALVCH162245PAG8

Product Overview

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

Specifications

• Supply Voltage: 1.2V - 3.6V
• Input Voltage Range (A Port): GND to VCC_A
• Input Voltage Range (B Port): GND to VCC_B
• Output Voltage Range (A/B Ports): GND to VCCA/VCCB
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay: 2.5ns (Max)
• Output Drive Capability: ±24mA

Detailed Pin Configuration

The 74ALVCH162245PAG8 IC has a total of 48 pins, divided into two ports: A and B. Each port consists of 24 pins, labeled as follows:

Port A:

1. OE (Output Enable) 1
2. I/O (Bidirectional Data) 1
3. I/O (Bidirectional Data) 2
4. I/O (Bidirectional Data) 3 ...
5. I/O (Bidirectional Data) 24

Port B:

1. OE (Output Enable) 2
2. I/O (Bidirectional Data) 25
3. I/O (Bidirectional Data) 26
4. I/O (Bidirectional Data) 27 ...
5. I/O (Bidirectional Data) 48

Functional Features

• Bidirectional voltage level translation between two different voltage domains.
• Supports both unidirectional and bidirectional data flow.
• High-speed operation with minimal propagation delay.
• Low power consumption, making it suitable for battery-powered devices.
• Output drive capability allows for driving capacitive loads.

Advantages

• Enables seamless communication between devices operating at different voltage levels.
• Provides reliable signal translation without the need for additional components.
• High-speed operation ensures efficient data transfer.
• Low power consumption extends battery life in portable applications.
• Robust output drive capability allows for driving long traces or multiple loads.

Disadvantages

• Limited to voltage translation between specific voltage ranges (1.2V - 3.6V).
• May not be suitable for applications requiring translation between higher voltage domains.
• Requires careful consideration of input/output voltage levels to prevent signal distortion.

Working Principles

The 74ALVCH162245PAG8 utilizes a combination of MOSFETs and CMOS technology to achieve bidirectional voltage level translation. It employs a voltage divider network and level-shifting circuitry to ensure proper signal translation between the A and B ports. The OE pins control the direction of data flow and can be used to enable/disable the translation functionality.

Detailed Application Field Plans

The 74ALVCH162245PAG8 is commonly used in various applications that require voltage level translation, such as: - Communication interfaces between microcontrollers and peripheral devices. - Interfacing between different logic families (e.g., TTL to CMOS). - Level shifting in memory interfaces (e.g., DDR, SRAM). - Signal translation in mixed-voltage systems.

Detailed Alternative Models

• 74LVC245A: Similar bidirectional voltage level translator with a wider supply voltage range (1.65V - 5.5V).
• SN74LVCH16245A: Another bidirectional voltage level translator with similar characteristics and pin configuration.
• 74HCT245: Unidirectional octal bus transceiver with voltage level translation capability.

Note: The above alternative models are provided as examples and may have different specifications and features. It is recommended to refer to the respective datasheets for detailed information.

This concludes the encyclopedia entry for the 74ALVCH162245PAG8 IC, providing an overview of its category, use, characteristics, package, specifications, pin configuration, functional features, advantages and disadvantages, working principles, application field plans, and alternative models.