SN74ALVCH16721DL

Product Overview

• Category: Integrated Circuit (IC)
• Use: Logic Level Shifter
• Characteristics: High-speed, low-voltage, 16-bit bus transceiver with 3-state outputs
• Package: TSSOP (Thin Shrink Small Outline Package)
• Essence: Transceiver IC for bidirectional level shifting between different voltage domains
• Packaging/Quantity: Available in reels of 2500 units

Specifications

• Supply Voltage Range: 1.2V to 3.6V
• Input Voltage Range: 0V to VCC
• Output Voltage Range: 0V to VCC
• Maximum Operating Frequency: 400 MHz
• Number of Channels: 16
• Output Drive Strength: ±24 mA
• Propagation Delay: 2.5 ns (max)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The SN74ALVCH16721DL 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)
• DIR: Direction Control pin (selects the direction of data flow)
• A1-A16: Data input/output pins for Port A
• B1-B16: Data input/output pins for Port B

Functional Features

• Bidirectional level shifting: Allows data transmission between two voltage domains
• 3-state outputs: Enables multiple devices to share a common bus without interference
• High-speed operation: Supports data rates up to 400 MHz
• Low-voltage operation: Works with supply voltages as low as 1.2V
• ESD protection: Provides robustness against electrostatic discharge

Advantages and Disadvantages

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

Disadvantages: - Limited to 16-bit bus width - Requires careful consideration of voltage levels and direction control

Working Principles

The SN74ALVCH16721DL is designed to shift logic levels between two voltage domains. It utilizes a combination of MOSFETs and CMOS technology to achieve bidirectional data transmission. The DIR pin controls the direction of data flow, while the OE pin enables or disables the outputs. The IC operates by converting input signals from one voltage level to another, allowing seamless communication between different parts of a system.

Detailed Application Field Plans

The SN74ALVCH16721DL is commonly used in applications where there is a need to interface between different voltage domains. Some typical application fields include:

1. Microcontroller interfacing: Allows communication between microcontrollers operating at different voltage levels.
2. Memory modules: Facilitates data transfer between memory chips with varying voltage requirements.
3. Communication systems: Enables level shifting in serial communication interfaces like UART, SPI, and I2C.
4. Industrial automation: Supports bidirectional data exchange between sensors, actuators, and control units.

Detailed and Complete Alternative Models

1. SN74LVC1T45DBVR: Single-bit level shifter with 3-state output, suitable for low-power applications.
2. SN74HCT125N: Quad buffer/line driver with 3-state outputs, ideal for general-purpose level shifting.
3. SN74LVCC4245APWR: Octal bus transceiver with 3-state outputs, designed for bidirectional voltage translation.

These alternative models offer similar functionality but may have different specifications and package options. It is important to select the appropriate model based on specific application requirements.

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