SN74ABT18504PMR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Logic Level Shifter
• Characteristics: High-speed, low-power consumption
• Package: 48-pin LQFP (Quad Flat Package)
• Essence: Logic level shifting between different voltage domains
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 2.3V 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 Time: 4.5ns (typical)
• Maximum Operating Frequency: 200MHz

Detailed Pin Configuration

The SN74ABT18504PMR has a total of 48 pins, which are divided into various functional groups:

1. Power Supply Pins:

   • VCC: Positive power supply (+3.3V)
   • GND: Ground (0V)

2. Data Input/Output Pins:

   • A1-A8: Eight data input/output pins for voltage domain A
   • B1-B8: Eight data input/output pins for voltage domain B

3. Control Pins:

   • OE: Output Enable (active low)
   • DIR: Direction control (selects the direction of data flow)

4. Voltage Level Control Pins:

   • VCCA1, VCCA2: Voltage reference for voltage domain A
   • VCCB1, VCCB2: Voltage reference for voltage domain B

Functional Features

• Bidirectional logic level shifting between two voltage domains
• Supports voltage translation from 2.3V to 3.6V
• High-speed operation with low propagation delay
• Low power consumption
• Output enable and direction control for flexible data flow management

Advantages and Disadvantages

Advantages: - Enables seamless communication between different voltage domains - High-speed operation allows for efficient data transfer - Low power consumption helps in reducing overall system energy usage

Disadvantages: - Limited voltage range support (2.3V to 3.6V) - Requires careful consideration of input/output voltage compatibility

Working Principles

The SN74ABT18504PMR is designed to facilitate logic level shifting between two voltage domains. It utilizes a combination of voltage reference pins and control signals to translate the input/output voltages from one domain to another. The direction control pin (DIR) determines the direction of data flow, while the output enable pin (OE) enables or disables the data transmission.

Detailed Application Field Plans

The SN74ABT18504PMR can be used in various applications where logic level shifting is required. Some potential application fields include:

1. Microcontroller Interfacing: Facilitating communication between microcontrollers operating at different voltage levels.
2. Sensor Networks: Enabling connectivity between sensors operating at different voltage domains.
3. Communication Systems: Supporting voltage translation in communication interfaces such as UART, SPI, or I2C.
4. Industrial Automation: Integrating devices with varying voltage requirements in industrial control systems.

Detailed and Complete Alternative Models

1. SN74LVC4245APWR: Logic Level Shifter with a wider supply voltage range (1.65V to 5.5V).
2. SN74HCT125N: Quad Bus Buffer Gates with 3-state outputs, suitable for voltage level conversion.
3. SN74LVCH16245ADGGR: 16-bit Bus Transceiver with 3-state outputs, providing bidirectional voltage translation.

These alternative models offer similar functionality but may have different specifications and package options.

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