Level Shifting
MS4561-2
Dual-Channel Auto Bidirectional Level Translator for Open-Drain and Push-Pull Applications
Datasheet Download
Overview
The MS4561-2 is a bidirectional level translator. It is powered by two independently configured supplies. The A-side supply voltage range is 1.65 V to 5.5 V, and the B-side supply voltage range is 2.3 V to 5.5 V. It can be used in signal conversion systems with voltages of 1.8 V, 2.5 V, 3.3 V, and 5 V.
When OE is low, all IO ports are in a high-impedance state, reducing static power consumption. When VCCA is powered up, OE has an internal pull-down current source. To ensure that the ports remain high-impedance during power-up or power-down, OE should be connected to ground through a pull-down resistor. The value of the pull-down resistor is determined by the pull-down capability of the drive current source.
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Key Features
- ⚫ No direction control signal required
- ⚫ Maximum data rate: 35 Mbps in push-pull mode, 2 Mbps in open-drain mode
- ⚫ A-side voltage range: 1.65 V to 5.5 V; B-side voltage range: 2.3 V to 5.5 V (VCCA ≤ VCCB)
- ⚫ VCC isolation: if either supply is pulled to ground, the ports are in a high-impedance state
- ⚫ No power-up sequencing control required
- ⚫ Supports power-down mode
Key Features
I2C/SMBus (System Management Bus)
UART (Universal Asynchronous Receiver/Transmitter)
GPIO (General-Purpose Input/Output)
