ISL88694IH5

Overview

The ISL88694 is a dual active pull-up bus terminator designed to improve data transmission speed on SMBus or similar 2-wire serial bus interfaces, while remaining compatible with I²C. It operates within a supply voltage range of 2.7V to 5.5V and supports frequencies up to 100kHz. The device features an active pull-up current of 275µA and a boost pull-up current of 2.2mA during rising transitions. Standby pull-up current is 100µA when both channels are HIGH. Input thresholds include VTRIPL at 0.75V (typical) and VTRIPH referenced to VDD. ESD protection on SMBus pins withstands 8kV HBM events.

Feature Summary

• Active termination for SMBus lines enhances system bus signal rise time
• Increases bus capacity while guaranteeing data integrity
• Provides 8kV ESD protection on SDA and SCL pins

Applications

• Servers
• Data Acquisition
• Routers
• Battery Chargers
• Portable Instrumentation

Procurement Notes

Verify the specific ordering suffix against the manufacturer's documentation to confirm package type and environmental compliance. Confirm that the component meets RoHS requirements if lead-free operation is necessary for the assembly process. Ensure the operating temperature range aligns with the intended application environment before finalizing procurement.

Selection Notes

Select this component for applications requiring improved signal integrity on SMBus or I²C buses with high capacitance loads. Verify that the required operating voltage falls between 2.7V and 5.5V. Consider the SOT-23-5 package constraints regarding board space and thermal dissipation. Ensure compatibility with existing 2-wire serial bus protocols in the design.

Part Context

The ISL88694 is part of the SMBus Accelerator family from Renesas Electronics Corporation. It serves as a dual-channel solution for enhancing bus performance in systems utilizing distributed capacitance. The device is pin-for-pin compatible with the LTC1694, facilitating potential replacements in existing designs without layout modifications.

Replacement Considerations

The ISL88694 is pin-for-pin compatible with the LTC1694. Verify electrical specifications and operating conditions match the original design requirements before substituting.