BQ4802LYDW

$4.03

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

SKU:c23241b0de8c 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：Bulk,Tube
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：2.7V ~ 3.6V
Voltage - Supply, Battery：2.4V ~ 4V
Current - Timekeeping (Max)：1.5mA (Typ) @ 2.7 V ~ 3.6 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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BQ4802LYDW

Overview

The BQ4802LYDW is a parallel Real-Time Clock (RTC) manufactured by Texas Instruments. It provides timekeeping functions for battery-backed systems, typically featuring a 32.768 kHz crystal input and binary-coded decimal (BCD) data output via a parallel interface. The device operates within a standard industrial temperature range and is designed to maintain accurate time synchronization in embedded applications requiring precise date and time tracking without continuous main system power.

Feature Summary

Parallel RTC interface with BCD data output
Supports 32.768 kHz external crystal oscillator
Industrial temperature range operation
Battery backup capability for continuous timekeeping

Applications

Battery-backed embedded systems
Industrial control panels requiring timestamping
Data logging equipment needing precise time references

Part Context

The BQ4802 series belongs to Texas Instruments' portfolio of real-time clock solutions. The 'YDW' suffix indicates a specific package type, typically a small-outline dual in-line package (SOIC) or similar surface-mount variant, suitable for automated assembly. This component is distinct from serial RTCs, offering direct parallel data access for legacy or high-speed microcontroller interfaces.

Replacement Considerations

Verify pin compatibility and voltage levels when substituting. Check if the replacement supports the same parallel interface protocol and BCD format. Ensure the new component meets the required temperature range and package dimensions for the existing PCB footprint.

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

Payment methods: T/T, WeChat Pay, credit cards, Google Pay, Apple Pay . Buyer covers shipping, fees, duties, and taxes; contact our product manager if you need a contract/procurement process.

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

Freight cost depends on destination, package size, and weight . We offer shipping options via DHL, FedEx, UPS, and TNT , and can ship using your freight account upon request.

Mode of Transportation

We ship via DHL, FedEx, UPS, and TNT. If you prefer a specific logistics provider, we can ship using your designated carrier.

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.