GENERAL DEscriptION

The SGM4578 is an 8-bit, non-inverting, bidirectional voltage-level translator which features two independent configurable power-supply lines. The A and B ports track the VCCA supply and VCCB supply respectively. The supply voltage range is 1.65V to 5.5V for A ports and 2.3V to 5.5V for B ports. The device provides a bidirectional translation function between the different voltage nodes (including 1.8V, 2.5V, 3.3V and 5V).

The SGM4578 has an output enable (OE) function, which controls the inputs and outputs states. When OE goes low, all I/Os enter into the high-impedance state. It is beneficial for reducing current consumption. When VCCA is powered, OE has an internal pull-down current source.

The SGM4578 is available in the Green TSSOP-20 and TQFN-3×3-20L packages. It operates over an ambient temperature range of -40℃ to +85℃.

FEATURES

• Power Supply Voltage Ranges (VCCA ≤ VCCB)

  A Ports: 1.65V to 5.5V

  B Ports: 2.3V to 5.5V

• Direction-Control Signal is Not Required

• Data Rates

  Push-Pull: 24Mbps

  Open-Drain: 2Mbps

• Support VCCA or VCCB Isolation

  When VCCA or VCCB is Low, Device Enters Power-Down Mode

• No Specific Power Se Required for VCCA and VCCB

• Support Partial-Power-Down Function

• -40℃ to +85℃ Operating Temperature Range

• Available in Green TSSOP-20 and TQFN-3×3-20L Packages

APPLICATIONS

Universal Asynchronous Receiver/Transmitter

I²C/SMBus Interfaces

General Purpose I/O (GPIO)