SN74CB3T3245DBQR

Product Overview

• Category: Integrated Circuit (IC)
• Use: Level Shifter and Bus Transceiver
• Characteristics: Bidirectional voltage level translation, low power consumption, high-speed operation
• Package: SSOP-20
• Essence: The SN74CB3T3245DBQR is a 8-bit bidirectional voltage level translator and bus transceiver designed for use in various digital systems.
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Supply Voltage Range: 1.65V to 3.6V
• High-Level Input Voltage: 2.3V to VCC + 0.3V
• Low-Level Input Voltage: -0.3V to 0.8V
• High-Level Output Voltage: VCC - 0.4V to VCC
• Low-Level Output Voltage: 0V to 0.4V
• Maximum Operating Frequency: 100MHz
• Propagation Delay: 2.7ns (Max) at 3.3V
• Operating Temperature Range: -40°C to 85°C

Detailed Pin Configuration

The SN74CB3T3245DBQR has a total of 20 pins arranged as follows:

___________ OE |1 20| VCC A1 |2 19| B1 A2 |3 18| B2 A3 |4 17| B3 A4 |5 16| B4 GND |6 15| B5 Y1 |7 14| B6 Y2 |8 13| B7 Y3 |9 12| B8 Y4 |10 11| GND ___________

Functional Features

• Bidirectional voltage level translation between two independent buses
• Supports mixed-mode signal operation (5V tolerant I/Os)
• Low power consumption, making it suitable for battery-powered devices
• High-speed operation allows for efficient data transfer
• ESD protection on all pins for enhanced reliability

Advantages and Disadvantages

Advantages: - Provides seamless voltage level translation between different logic families - Supports bidirectional communication, simplifying system design - Low power consumption extends battery life in portable applications - High-speed operation enables fast data transfer

Disadvantages: - Limited to a maximum operating frequency of 100MHz - May not be suitable for applications requiring higher speed or complex protocols - Only available in SSOP-20 package, limiting compatibility with certain board layouts

Working Principles

The SN74CB3T3245DBQR operates by translating the voltage levels between two independent buses. It uses a combination of MOSFETs and CMOS technology to achieve bidirectional signal transmission. The direction of the translation is controlled by the Output Enable (OE) pin. When OE is high, the device is in the high-impedance state, allowing bidirectional communication between the A and B buses. When OE is low, the device acts as a unidirectional level shifter, translating signals from one bus to the other.

Detailed Application Field Plans

The SN74CB3T3245DBQR can be used in various digital systems that require voltage level translation and bus transceiver functionality. Some potential application fields include:

1. Microcontroller interfacing: The IC can be used to interface microcontrollers operating at different voltage levels, enabling communication between them.
2. Memory modules: It can be employed in memory modules to facilitate data transfer between different memory devices with varying voltage requirements.
3. Communication systems: The IC can be utilized in communication systems to interface different logic families, such as TTL and CMOS, ensuring compatibility and reliable signal transmission.

Detailed and Complete Alternative Models

1. SN74CBT3257: 4-bit bidirectional level shifter and bus transceiver
2. SN74LVC4245A: 8-bit dual-supply bus transceiver with configurable voltage translation
3. SN74AVC4T245: 4-bit dual-supply bus transceiver with configurable voltage level shifting

These alternative models offer similar functionality to the SN74CB3T3245DBQR and can be considered based on specific application requirements.

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