Level Shifting
MS4561-4
Quad Automatic Bidirectional Level Translator for Open-Drain and Push-Pull Applications
Overview
The MS4561-4 is a bidirectional level translator featuring four independent power supply configurations. Port A supports a supply voltage range of 1.65V to 5.5V, while Port B operates from 2.3V to 5.5V. It is suitable for signal level translation in 1.8V, 2.5V, 3.3V, and 5V systems.
When the OE pin is driven low, all I/O ports enter a high-impedance state, reducing static power consumption. The OE pin incorporates an internal pull-down current source when VCCA is powered. To ensure the ports remain in a high-impedance state during power-up or power-down sequences, the OE pin should be connected to ground via a pull-down resistor, with the resistance value determined by the drive capability of the internal current source.
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Key Features
- ⚫ No directional control signal required
- ⚫ Maximum data rate: 35 Mbps (push-pull mode), 2 Mbps (open-drain mode)
- ⚫ Voltage range: 1.65V–5.5V (Port A), 2.3V–5.5V (Port B), with VCCA ≤ VCCB
- ⚫ VCC isolation: If either power supply is pulled to ground, the ports enter a high-impedance state
- ⚫ No power-up sequence control required
- ⚫ Supports power-down mode
Key Features
Headphones
Smartphones
Tablets
Desktop computers
