ST1G3234BBJR

Translators, Level Shifters Overview

The ST1G3234 is a dual-supply CMOS 1-bit bus buffer level translator designed for asynchronous communication between data buses. It operates with supply voltages VCCA and VCCB ranging from 1.4V to 3.6V, supporting mixed voltage systems such as 3.3V/1.8V, 3.3V/2.5V, and 1.8V/1.4V. The device features a maximum propagation delay of 4.4ns at 85°C and supports max data rates up to 380Mbps during 1.8V to 3.3V translation. It includes power-down protection on inputs and outputs, ensuring effective bus isolation when supplies are down.

Translators, Level Shifters Feature Summary

• Integrated 26Ω series resistor on A-side outputs
• Power-down protection isolates buses when supplies are off
• Input tolerant buffers translate signals greater than VCCB
• Balanced propagation delays (tPLH ≈ tPHL)

Translators, Level Shifters Applications

• Interface between 3.3V and 2.5V or 1.8V buses
• Mixed 3.3V/1.8V supply systems
• Mixed 1.8V/1.4V supply systems

Translators, Level Shifters Procurement Notes

Verify the specific ordering suffix 'BJR' against current manufacturer catalogs, as this component is listed as obsolete. Confirm availability through authorized distributors or secondary markets. Ensure that the Flip-Chip 5 package dimensions and tape-and-reel specifications match your assembly requirements before finalizing procurement plans.

Translators, Level Shifters Selection Notes

Select this component for applications requiring unidirectional level shifting between low-voltage digital buses. It is suitable where balanced propagation delays and low quiescent current (5µA max) are critical. Verify that the operating temperature range (-40°C to 85°C) meets environmental constraints and that the input/output voltage tolerances align with the connected logic families.

Translators, Level Shifters Part Context

The ST1G3234 belongs to STMicroelectronics' family of dual-supply bus buffers and level translators. These devices facilitate signal integrity in mixed-voltage environments by translating logic levels between different supply domains without requiring external components for basic operation.

Translators, Level Shifters Replacement Considerations

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