Encyclopedia Entry: 74ACT16245DLR

Product Information Overview

• Category: Integrated Circuit (IC)
• Use: Bus Transceiver
• Characteristics: High-speed, low-power, bidirectional data transfer
• Package: Datasheet Reference Layout (DLR)
• Essence: Transferring data between two bidirectional buses with different voltage levels
• Packaging/Quantity: Available in various packaging options, typically sold in reels or tubes

Specifications

• Technology: Advanced CMOS Logic
• Voltage Level: 3.3V
• Number of Channels: 16
• Data Transfer Rate: Up to 200 MHz
• Operating Temperature Range: -40°C to +85°C
• Supply Voltage Range: 4.5V to 5.5V
• Input/Output Compatibility: TTL, LVTTL, and LVCMOS

Detailed Pin Configuration

The 74ACT16245DLR has a total of 48 pins, which are divided into four groups:

1. Group A (Pins 1-12): Contains the input/output pins for channels 1-12.
2. Group B (Pins 13-24): Contains the input/output pins for channels 13-24.
3. Group C (Pins 25-36): Contains the input/output pins for channels 25-36.
4. Group D (Pins 37-48): Contains the input/output pins for channels 37-48.

Functional Features

• Bidirectional data transfer between two buses with different voltage levels
• Non-inverting outputs for both bus directions
• Output enable control for each channel
• Schmitt-trigger inputs for noise immunity
• Power-up 3-state feature ensures bus isolation during power-up and power-down

Advantages and Disadvantages

Advantages: - High-speed data transfer capability - Low power consumption - Wide operating temperature range - Compatibility with various input/output voltage levels - Noise immunity due to Schmitt-trigger inputs

Disadvantages: - Limited number of channels (16) - Requires external pull-up resistors for bus termination

Working Principles

The 74ACT16245DLR is designed to facilitate bidirectional data transfer between two buses operating at different voltage levels. It utilizes advanced CMOS logic technology to achieve high-speed data transfer while consuming minimal power. The device features non-inverting outputs, which ensure that the data is transmitted in the same format as it was received.

To enable or disable data transfer on each channel, an output enable control signal is provided. This allows for selective communication between the two buses. Additionally, the Schmitt-trigger inputs enhance noise immunity by providing hysteresis and reducing the impact of signal fluctuations.

During power-up and power-down, the 74ACT16245DLR ensures bus isolation through its power-up 3-state feature. This prevents any unintended data transfer during these critical periods.

Detailed Application Field Plans

The 74ACT16245DLR finds applications in various fields where bidirectional data transfer between buses with different voltage levels is required. Some common application areas include:

1. Industrial Automation: Used in PLC (Programmable Logic Controller) systems for communication between different modules operating at different voltage levels.
2. Telecommunications: Facilitates data exchange between telecom equipment with varying voltage requirements, such as routers, switches, and base stations.
3. Automotive Electronics: Enables communication between different automotive subsystems, such as engine control units, infotainment systems, and sensors.
4. Medical Devices: Utilized in medical equipment for data transfer between different modules, ensuring compatibility between various voltage levels.

Detailed and Complete Alternative Models

1. SN74ACT16245DLR: Similar to 74ACT16245DLR, but manufactured by Texas Instruments.
2. MC74ACT16245DLR2G: Another alternative produced by ON Semiconductor.
3. CD74ACT16245DLR: A comparable model offered by Texas Instruments.

These alternative models provide similar functionality and can be used as substitutes for the 74ACT16245DLR in various applications.

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