ST2149BQTR

Translators, Level Shifters Overview

The ST2149BQTR is a 4-bit dual supply level translator manufactured by STMicroelectronics. It facilitates bi-directional data transfer between multi-voltage systems without requiring a direction control pin. The device supports an A-side voltage (VL) range of 1.65 V to 3.6 V and a B-side voltage (VCC) range from VL up to 5.5 V. It features a tri-state output mode controlled by an OE pin, which allows all I/Os to be disabled. The component operates within a temperature range of -40 °C to 85 °C and provides ESD protection of ±2 kV HBM on all pins.

Translators, Level Shifters Feature Summary

• Bi-directional level translation architecture that eliminates the need for a separate direction control pin
• Wide operating voltage range accommodating low-voltage ASICs and higher voltage systems
• Totem-pole driving capability with a 5.5 V tolerant enable pin
• High electrostatic discharge tolerance across all input/output pins

Translators, Level Shifters Applications

• Low-voltage system level translation
• Mobile phones and other mobile devices

Translators, Level Shifters Procurement Notes

Verify the specific ordering code against official manufacturer documentation to ensure correct package type and tape-and-reel specifications. Confirm that the required voltage levels fall within the specified operational ranges for both VL and VCC. Ensure environmental compliance requirements match the ECOPACK grade available for this component.

Translators, Level Shifters Selection Notes

Select this component when designing circuits that require seamless data exchange between logic blocks operating at different voltage potentials. The absence of a direction control pin simplifies board layout and reduces pin count requirements. Verify that the driver circuitry can source and sink the necessary current to maintain proper operation of the internal weak output buffers.

Translators, Level Shifters Part Context

This part belongs to the ST2149B series of level translators produced by STMicroelectronics. It is designed specifically for applications where space is constrained, utilizing a compact QFN12 package measuring 1.7 x 2.0 mm. The series focuses on providing reliable signal integrity in mixed-voltage environments common in portable electronics.

Translators, Level Shifters Replacement Considerations

Check for direct substitutes within the same product family or equivalent components from other manufacturers that offer similar 4-bit bi-directional translation capabilities. Ensure any replacement matches the QFN12 footprint and maintains compatible voltage ranges.