ISL12057IBZ-T

Real Time Clock Overview

The ISL12057IBZ-T is a low-power, serial real-time clock/calendar manufactured by Renesas Electronics. It operates on an I2C bus interface with a maximum data transfer rate of 400kHz. The device tracks time in hours, minutes, and seconds and includes calendar registers for date, month, year, and day of the week, featuring automatic leap year correction through 2099. It functions within a supply voltage range of 1.8V to 3.6V and supports an operating temperature range from -40°C to +85°C. The component is housed in an 8-lead SOIC package.

Real Time Clock Feature Summary

• Pin compatible and functionally equivalent to Maxim DS1337
• Dual interrupt pins for frequency output and alarm events
• Four selectable frequency outputs and two programmable alarms
• I2C interface supporting 400kHz data transfer rates

Real Time Clock Applications

• Utility Meters
• HVAC Equipment
• Network Routers, Hubs, Switches, Bridges

Real Time Clock Procurement Notes

Verify the specific suffix 'IBZ' corresponds to the SOIC-8 package variant when sourcing. Confirm RoHS compliance status via the manufacturer's current documentation. Check for moisture sensitivity handling requirements prior to assembly. Ensure the supplier provides valid traceability for the Renesas/Intersil brand origin.

Real Time Clock Selection Notes

Select this model for designs requiring direct replacement for Maxim DS1337 components without PCB layout changes. Choose the SOIC-8 package for standard surface mount assembly processes. Verify that the system power supply remains within the 1.8V to 3.6V operational window. Consider the dual IRQ capability if separate interrupt lines for alarms and frequency outputs are required.

Real Time Clock Part Context

This part belongs to the ISL12057 series of real-time clocks. It serves as a low-cost, low-power alternative to previous Intersil RTC offerings. The device integrates clock, calendar, and alarm functions into a compact 8-lead form factor, designed for space-constrained embedded applications.

Real Time Clock Replacement Considerations

The ISL12057 is functionally equivalent to the Maxim DS1337. Designers replacing legacy DS1337 units can utilize this component with pin-compatible substitution.