ST4G3235BJR

Translators, Level Shifters Overview

The ST4G3235BJR is a dual-supply CMOS 4-bit bus buffer level translator featuring integrated series resistors on one side of the outputs. It facilitates asynchronous communication between mixed-voltage buses, supporting translations such as 3.3V to 1.8V or 2.5V. The device operates with supply voltages ranging from 1.4V to 3.6V on both VCCA and VCCB rails. It provides high-speed performance with a maximum propagation delay of 4.3ns at 85°C and supports data rates up to 380Mbps during 1.8V to 3.3V translation. Power consumption is minimized with quiescent currents of 5µA maximum.

Translators, Level Shifters Feature Summary

• Dual-supply architecture enabling voltage translation between independent logic levels
• Integrated series resistors on output side for signal integrity management
• Power-down protection isolates inputs and outputs when supplies are off
• High ESD immunity with static discharge protection circuits

Translators, Level Shifters Applications

• Interface between 3.3V and 1.8V/2.5V data buses
• Mixed voltage system interconnects
• Asynchronous data bus buffering

Translators, Level Shifters Procurement Notes

Verify component status before ordering, as this part may be obsolete. Confirm package type and revision history against current design requirements. Ensure compatibility with existing PCB layout and soldering profiles. Check for available replacement alternatives if long-term supply is required.

Translators, Level Shifters Selection Notes

Select this component for applications requiring bidirectional voltage translation between low-voltage domains. Consider the integrated series resistor feature for impedance matching needs. Verify that the operating temperature range and supply voltage constraints align with the target system environment.

Translators, Level Shifters Part Context

This device belongs to the ST4G3235 family of bus buffers. It utilizes sub-micron silicon gate technology with five-layer metal wiring. The Flip-Chip11 package offers a compact form factor suitable for space-constrained designs.

Translators, Level Shifters Replacement Considerations

Check for direct pin-compatible substitutes within the same product family. Evaluate alternative level translators with similar voltage ranges and speed specifications if this part is no longer available.

Translators, Level Shifters FAQ

What is the maximum data rate supported by the ST4G3235BJR?

The device supports a maximum data rate of 380Mbps when translating between 1.8V and 3.3V.

How does the power-down protection function?

When both power supplies are down, the device disables its inputs and outputs, effectively isolating the connected buses.

What is the purpose of the series resistor on the outputs?

The integrated series resistor on one side of the outputs helps manage signal integrity and impedance matching in the circuit.