MAX3079EESD+

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MAX3079EESD is a high-speed level-shifting single-channel I2C-bus and SMBus transceiver with 5-V tolerant inputs. It can be used to convert logic-level signals between two power domains, providing up to 100 mA of output current. The MAX3079EESD+ also supports hot-swap, allowing it to be connected to a power supply even when it is turned off. It belongs to the Interface - Drivers, Receivers, Transceivers category.

Application Field of MAX3079EESD+

The MAX3079EESD+ is commonly used in low-voltage applications such as LCD modules, MP3 players, digital cameras, cellular phones, and PDA displays. It is suitable for applications that require a high level of isolation and very low levels of noise. The bi-directional level-shifting feature allows it to be used to bridge two different voltage domains with minimal interference or distortion. The transceiver is often used to connect two power domains when one of the domains is outside the voltage range of the other, or when the two domains do not share the same logic level. The MAX3079EESD+ is also often used in automotive, medical, industrial, and consumer applications.

Working Principle of MAX3079EESD+

The MAX3079EESD+ makes use of a charge-pump circuit to achieve level shifting. The circuit generates a voltage that is equal to the difference between the two input voltages. This resulted voltage is then used to level shift the signal from one domain to the other. The bi-directional nature of the circuit means that both the high and low logic levels of the input and output signals can be shifted. The transceiver features an open-drain output stage, which is useful for isolating the voltage domains and improving noise immunity. The MAX3079EESD+ also features hot-swap capability, ensuring that the circuit does not suffer from power supply glitches when powered on. The transceiver can also provide up to 100mA of output current, making it suitable for applications that require greater current capability.

Conclusion

The MAX3079EESD+ transceiver is a versatile and robust solution for level shifting between two power domains. It is commonly used in a wide range of applications where precision and noise immunity is required. The hot-swap capability and the ability to provide up to 100mA of output current make it ideal for applications where quick power up is required or where more current is needed. It is a great tool for designers looking to incorporate level shifting into their design without compromising noise immunity or performance.

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