GENERAL DEscriptION

The SGM4556 is a 2-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 1.2V to 5.0V for A ports and 1.65V to 5.5V for B ports. The device provides a bidirectional translation function between the different voltage nodes (including 1.2V, 1.5V, 1.8V, 2.5V, 3.3V and 5V).

The SGM4556 has an output enable (OE) function, which controls the outputs states. When OE goes low, all outputs enter into the high-impedance state. When VCCA is powered, OE has an internal pull-down current source. The OE should be connected to GND via a pull-down resistor, and the minimum resistor value is depended on the current source capability of the driver.

The SGM4556 is available in Green XTDFN-1.4×1-8L and SOT-23-8 packages. It operates over an ambient temperature range of -40℃ to +85℃.

FEATURES

• Power Supply Voltage Range (VCCA ≤ VCCB)

  A Ports: 1.2V to 5.0V

  B Ports: 1.65V to 5.5V

• Support VCCA or VCCB Isolation

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

• OE Input Circuit Referenced to VCCA

• Support Partial-Power-Down Function

• Support Push-Pull Output

• Low Power Consumption

• -40℃ to +85℃ Operating Temperature Range

• Available in Green XTDFN-1.4×1-8L and SOT-23-8 Packages

APPLICATIONS

Universal Asynchronous Receiver/Transmitter (UART)

General Purpose I/O (GPIO)