BQ4802YDWRG4

$4.39

Description：IC RTC CLK/CALENDAR PAR 28SOIC
Series：-

SKU:165251628791 Category: Real Time Clocks Brand: Texas Instruments

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Product introduction

Product Detailed Parameters

Description：IC RTC CLK/CALENDAR PAR 28SOIC
Series：-
Package：Tape & Reel (TR)
Mfr：Texas Instruments
Type：Clock/Calendar
Features：Alarm, Daylight Savings, Leap Year, Supervisor, Watchdog Timer
Memory Size：-
Time Format：HH:MM:SS (12/24 hr)
Date Format：YY-MM-DD-dd
Interface：Parallel
Voltage - Supply：4.5V ~ 5.5V
Voltage - Supply, Battery：2.4V ~ 4V
Current - Timekeeping (Max)：1.5mA (Typ) @ 4.5 V ~ 5.5 V
Operating Temperature：0°C ~ 70°C
Mounting Type：Surface Mount
Package / Case：28-SOIC (0.295", 7.50mm Width)
Supplier Device Package：28-SOIC

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BQ4802YDWRG4

Overview

The BQ4802YDWRG4 is a parallel real-time clock (RTC) integrated circuit manufactured by Texas Instruments. It provides timekeeping and calendar functions in a 28-SOIC package. The device operates with a main supply voltage of 4.5V to 5.5V and supports a backup battery voltage of 2.4V to 4V. Typical current consumption during timing operation is 1.5mA at the nominal supply voltage. It features a 28-pin Small Outline Integrated Circuit (SOIC) housing with a width of 7.50mm, designed for surface-mount installation.

Feature Summary

Parallel interface for direct CPU connection
Integrated CPU supervisor and watchdog timer
Automatic leap year compensation up to 2100
Supports 12-hour/24-hour time formats

Applications

Industrial control systems requiring precise time synchronization
Data logging equipment needing calendar tracking
Telecommunications infrastructure maintaining uptime records
Embedded systems with parallel bus architectures

Procurement Notes

Verify the specific suffix 'G4' indicates lead-free compliance and RoHS3 status as per manufacturer documentation. Confirm the package variant matches the required 28-SOIC footprint. Check for any recent Product Change Notices regarding marking or material updates before finalizing procurement specifications.

Selection Notes

Select this component when a parallel interface is required for high-speed data transfer between the RTC and microcontroller. Ensure the system design accommodates the 28-pin SOIC thermal requirements. Verify that the available backup battery voltage range aligns with the system's power management strategy for continuous operation during main power loss.

Part Context

This part belongs to the BQ4802 family of parallel RTCs from Texas Instruments. It shares functional similarities with the BQ4802YDW but includes specific manufacturing revisions indicated by the G4 suffix. The device is often used in conjunction with other logic ICs like bus transceivers in complex embedded designs.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Designers should consult official Texas Instruments documentation for qualified alternatives or pin-compatible options within the same product family.

How to buy

Online and offline orders are supported. If the item is available for online purchase, you can place it in the cart; for wholesale pricing, please contact our product manager for a quote.

Payment Method

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Delivery time

In-stock items usually ship within 24 hours. Otherwise, shipment is arranged 1 to 2 days after the items arrive at our warehouse. Timing depends on destination and shipping method.

Freight calculation

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Mode of Transportation

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Return and Refund

Returns are accepted within 60 days of invoice with RMA approval. Items must be resalable; original invoice and test report are required. No returns for customer errors.