The TC7MB3245FKEL is a high-speed CMOS bus transceiver fabricated with advanced silicon gate CMOS technology. This device is designed for bi-directional asynchronous communication between data buses. It features dual supplies (VCCA and VCCB) to allow for voltage translation, making it suitable for mixed-voltage systems. It’s commonly used for level shifting and data transfer in various digital systems.

Applications:

• Voltage level translation
• Data bus isolation
• Hot swapping applications
• Mixed voltage systems
• Memory interfaces

Features:

• Dual supply operation: VCCA = 1.65 V to 3.6 V, VCCB = 2.3 V to 5.5 V
• High-speed operation: tpd = 3.5 ns (max) at VCCA = 3.3 V, VCCB = 5 V
• Low power dissipation: ICC = 2 μA (max) at Ta = 25°C
• Bus hold circuitry on data inputs eliminates the need for external pull-up resistors
• Output drive capability: |IOH| = IOL = 8 mA (min) at VCCB = 4.5 V
• ESD protection: ±2 kV (HBM)

Benefits:

• Facilitates seamless communication between different voltage domains.
• Minimizes signal propagation delay for enhanced system performance.
• Reduces power consumption for greater energy efficiency.
• Simplifies design by eliminating external components.
• Ensures robust signal transmission capability.
• Provides protection against electrostatic discharge.

The TC7MB3245FKEL is an 8-bit transceiver with two separate enable inputs (OEAB and OEBA) for controlling the direction of data flow. When OEAB is low and OEBA is high, data flows from A to B. When OEAB is high and OEBA is low, data flows from B to A. When both OEAB and OEBA are high, both ports are effectively isolated. The device is designed to operate over a wide range of temperatures and is supplied in a VSSOP package for space-saving board layouts. The bus hold feature eliminates the need for external pull-up resistors, simplifying the design and reducing component count. It is specifically designed for applications requiring voltage level translation, such as interfacing 3.3V and 5V systems.