ST2189QTR

Translators, Level Shifters Overview

The ST2189QTR is an 8-bit dual supply level translator manufactured by STMicroelectronics in a QFN20 package (3.2 x 1.8 mm). It supports bidirectional voltage translation between VCCA and VCCB, both ranging from 1.65 V to 3.6 V. The device operates within a temperature range of -40 °C to +85 °C. At VCCA = 3.6 V, it achieves a data transfer rate of up to 92 Mbps. Key electrical characteristics include a maximum propagation delay of 6.2 ns, quiescent current of 5 µA, and ±4 kV ESD protection.

Translators, Level Shifters Feature Summary

• Bidirectional level translation without requiring a direction control pin
• Configurable voltage translation allowing VCCA to be greater than or less than VCCB
• Partial power down support where outputs automatically transition to high impedance when VCCB is grounded
• Low quiescent current consumption of 5 µA

Translators, Level Shifters Applications

• Low voltage system level translation
• Mobile phones
• Other mobile devices

Translators, Level Shifters Procurement Notes

Verify the specific ordering code ST2189QTR against official STMicroelectronics documentation to confirm the QFN20 package and tape-and-reel packing configuration. Ensure that the application environment strictly adheres to the recommended operating conditions for VCCA and VCCB voltages. Confirm that driver capabilities meet the minimum sourcing and sinking requirements specified in the datasheet.

Translators, Level Shifters Selection Notes

Select this component when designing multi-voltage systems requiring bidirectional data transfer without complex direction control logic. It is suitable for interfacing low-voltage ASICs or PLDs with higher voltage systems. Verify that the load driving capability accommodates the weak pull-up/down resistors and that the OE pin can be properly managed for tri-state operations.

Translators, Level Shifters Part Context

The ST2189 belongs to the family of dual supply level translators designed for embedded applications. It provides an 8-bit interface solution for shifting logic levels between different voltage domains. The QFN20 package offers a compact footprint for space-constrained designs. This component facilitates seamless communication between various digital components operating at different supply voltages.

Translators, Level Shifters Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation.