SN74ALVCH16271DL

Product Overview

• Category: Integrated Circuit (IC)
• Use: Logic Level Translator
• Characteristics: High-speed, low-voltage, non-inverting, 16-bit universal bus driver with 3-state outputs
• Package: TSSOP (Thin Shrink Small Outline Package)
• Essence: Logic level translation between different voltage domains
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 1.2V to 3.6V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Operating Temperature Range: -40°C to +85°C
• Propagation Delay: 2.4ns (typical)
• Output Drive Strength: ±24mA
• ESD Protection: >2000V (Human Body Model)

Detailed Pin Configuration

The SN74ALVCH16271DL has a total of 56 pins, which are divided into various functional groups:

• VCC: Power supply pin (+1.2V to +3.6V)
• GND: Ground pin (0V reference)
• OE: Output Enable pin (active low)
• A1-A16: Data input pins for Port A
• B1-B16: Data input pins for Port B
• Y1-Y16: Data output pins for Port A
• Z1-Z16: Data output pins for Port B

Functional Features

• Non-inverting logic level translation between two voltage domains
• Supports bidirectional data flow
• 3-state outputs allow multiple devices to share the same bus
• High-speed operation suitable for high-performance applications
• Low power consumption
• ESD protection for robustness

Advantages and Disadvantages

Advantages: - Wide supply voltage range allows compatibility with various systems - High-speed operation enables efficient data transfer - 3-state outputs facilitate bus sharing among multiple devices - ESD protection ensures reliability in harsh environments

Disadvantages: - Limited to 16-bit data width - Requires external pull-up or pull-down resistors for proper operation

Working Principles

The SN74ALVCH16271DL is designed to translate logic levels between two different voltage domains. It uses a combination of CMOS and BiCMOS technologies to achieve high-speed operation while maintaining low power consumption.

The device operates by receiving data inputs from one voltage domain (Port A) and translating them to the corresponding voltage level of another domain (Port B). The non-inverting nature of the translation ensures that the logical relationship between the input and output signals remains the same.

The OE pin controls the output enable function, allowing the device to be put into a high-impedance state when not actively driving the bus. This feature enables multiple devices to share the same bus without causing conflicts.

Detailed Application Field Plans

The SN74ALVCH16271DL can be used in various applications where logic level translation is required. Some potential application fields include:

1. Microcontroller interfacing: Translating signals between microcontrollers operating at different voltage levels.
2. Memory modules: Enabling communication between memory chips with different voltage requirements.
3. Communication interfaces: Facilitating data exchange between devices operating at different logic levels, such as UART, SPI, or I2C interfaces.
4. Industrial automation: Connecting sensors and actuators with different voltage compatibility.
5. Automotive electronics: Supporting voltage translation in automotive control systems.

Detailed and Complete Alternative Models

1. SN74LVC1T45DBVR: Single-bit level translator with 3-state output, suitable for low-power applications.
2. SN74AVC4T245PW: 4-bit level translator with 3-state output, designed for bidirectional voltage translation.
3. SN74LVC8T245PWR: 8-bit level translator with 3-state output, ideal for bus interface applications.

These alternative models offer different data widths and package options to suit specific design requirements.

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