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The BU90LV048-E2 is a high-speed, low-voltage CMOS 4-bit bidirectional universal bus transceiver manufactured by ROHM Semiconductor.

Specifications:

• Logic Type: 4-bit Bidirectional Universal Bus Transceiver
• Voltage Supply: 1.65V to 3.6V (Low Voltage Operation)
• High-Speed Operation:
• Propagation Delay: 3.5ns (max) @ 3.3V
• Bidirectional Data Flow: Controlled by Direction (DIR) and Output Enable (OE) pins
• I/O Compatibility:
• 5V Tolerant Inputs (when powered)
• Supports Mixed Voltage Systems
• Package Type: TSSOP-20
• Operating Temperature Range: -40°C to +85°C
• Low Power Consumption:
• Standby Current: 10µA (max)
• Dynamic Current: 5mA (typ) @ 3.3V, 100MHz

Descriptions:

• Designed for high-speed data transfer between different voltage domains (1.8V, 2.5V, 3.3V).
• Features non-inverting data paths for bidirectional communication.
• Direction Control (DIR) determines data flow (A→B or B→A).
• Output Enable (OE) disables outputs for bus isolation.

Features:

• Wide Operating Voltage Range (1.65V–3.6V)
• 5V-Tolerant Inputs (for interfacing with higher voltage logic)
• High-Speed Operation (3.5ns max propagation delay @ 3.3V)
• Low Power Consumption (ideal for battery-operated devices)
• Bidirectional Data Flow with Direction Control
• TSSOP-20 Package for Space Efficiency

This device is commonly used in portable electronics, communication systems, and mixed-voltage digital interfaces.

Would you like additional details on pin configurations or application notes?