Products > Integrated Circuits (ICs) > Clock & Timer ICs > DS12R887-33

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RTC with Constant-Voltage Trickle Charger

Manufacturer : Maxim Integrated
Package/Case : BGA48
Product Categories : Real-time clock control, time keeping
Datasheet: DS12R887-33 Datasheet (PDF)
RoHs Status: Lead free/RoHS Compliant
In-stock: 949


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DS12R887-33 Product Details

The MAX3040–MAX3045 is a family of 5V quad RS-485/RS-422 transmitters designed for digital data transmission over twisted-pair balanced lines. All transmitter outputs are protected to ±10kV using the Human Body Model. The MAX3040/MAX3043 (250kbps) and the MAX3041/MAX3044 (2.5Mbps) are slew-rate limited transmitters that minimize EMI and reduce reflections caused by improperly terminated cables, thus allowing error-free transmission. The MAX3040–MAX3045 feature a hot-swap capability that eliminates false transitions on the data cable during power-up or hot insertion. The MAX3042B/MAX3045B are optimized for data transfer rates up to 20Mbps, the MAX3041/MAX3044 for data rates up to 2.5Mbps, and the MAX3040/MAX3043 for data rates up to 250kbps. The MAX3040–MAX3045 offer optimum performance when used with the MAX3093E or MAX3095 5V quad differential line receivers or MAX3094E/MAX3096 3V quad differential line receivers. The MAX3040–MAX3045 are ESD-protected pin-compatible, low-power upgrades to the industry-standard 'SN75174 and 'DS26LS31C. They are available in space-saving TSSOP, narrow SO, and wide SO packages.



  • ESD Protection: ±10kV—Human Body Model
  • Single +5V Operation
  • Guaranteed Device-to-Device Skew (MAX3040/MAX3041/MAX3043/MAX3044)
  • Pin-Compatible with 'SN75174, '26LS31C and LTC487
  • Hot-Swappable for Telecom Applications
  • Up to 20Mbps Data Rate (MAX3042B/MAX3045B)
  • Slew-Rate Limited (Data Rates at 2.5Mbps and 250kbps)
  • 2nA Low-Power Shutdown Mode
  • 1mA Operating Supply Current
  • ±2kV EFT Fast Transient Burst Immunity per IEC 1000-4-4
  • Level 2 Surge Immunity per IEC 1000-4-5, Unshielded Cable Model
  • Ultra-Small 16-Pin TSSOP, 16-Pin Narrow SO, and Wide 16-Pin SO


  • Handheld Equipment
  • Industrial Motor Control
  • Industrial PLCs
  • Networking
  • Telecommunications Equipment
  • Transmitter for ESD-Sensitive Applications

DS12R887-33 Block Diagram
(Picture: Diagram)

Technical Parameters

  • Function
  • Clock, Calendar
  • RTC Bus Interface
  • Multiplexed
  • Date Format
  • DW:DM:M:Y, Binary
  • Time Format
  • HH:MM:SS, Binary
  • RTC Memory Size
  • 114 B
  • Supply Voltage Max
  • 3.63 V
  • Supply Voltage Min
  • 2.97 V
  • Maximum Operating Temperature
  • + 85 C
  • Minimum Operating Temperature
  • - 40 C
  • Mounting Style
  • Package / Case
  • BGA
  • Packaging
  • Tube
  • Battery Backup Switching
  • Yes
  • Series
  • DS12CR887, DS12R885, DS12R887
  • Part # Aliases
  • 90-12887-R0B

DS12R887-33 Datasheet

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Estimated Delivery Time: May 28 - Jun 02 days (choose Expedited at checkout).

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    We have rich products, can meet your various needs.

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    Minimum order quantity starts from 1pcs.

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    Lowest international shipping fee starts from US$2.00.

  • 90 days quality guarantee for all products.

    90 days quality guarantee for all products.


  • Step1:Product

    Step1: Products

  • Step2:Vacuum packaging

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    Step3: Anti-Static Bag

  • Step4:Individual packaging

    Step4: Individual Packaging

  • Step5:Packaging boxes

    Step5: Packaging Boxes

  • Step6:bar-code shipping tag

    Step6: Bar-Code Shipping Tag

All the products will packing in anti-staticbag. Ship with ESD antistatic protection.

Outside ESD packing’s lable will use ourcompany’s information: Part Mumber, Brand and Quantity.

We will inspect all the goods before shipment,ensure all the products at good condition and ensure the parts are new originalmatch datasheet.

After all the goods are ensure no problems afterpacking, we will packing safely and send by global express. It exhibitsexcellent puncture and tear resistance along with good seal integrity.

Jotrin ESD packing


1.The electronic components you purchase include 365 Days Warranty, We guarantee product quality.

2.If some of the items you received aren't of perfect quality, we would resiponsibly arrange your refund or replacement. But the items must remain their orginal condition.


Q: How does Jotrin guarantee that DS12R887-33 is the original manufacturer or agent of MAXIM?
We have a professional business development department to strictly test and verify the qualifications of MAXIM original manufacturers and agents. All MAXIM suppliers must pass the qualification review before they can publish their DS12R887-33 devices; we pay more attention to the channels and quality of DS12R887-33 products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
Q: How to find the detailed information of DS12R887-33 chips? Including MAXIM original factory information, Real-time clock control, time keeping application, DS12R887-33 pictures?
You can use Jotrin's intelligent search engine, or filter by Analog ; Real-Time Clock category, or find it through Maxim Integrated Information page.
Q: Are the MAXIM's DS12R887-33 price and stock displayed on the platform accurate?
The MAXIM's inventory fluctuates greatly and cannot be updated in time, it will be updated periodically within 24 hours. After submitting an order for DS12R887-33, it is recommended to confirm the order with Jotrin salesperson or online customer service before payment.
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Note: It may take up to 24 hours before carriers will display tracking information. In normal conditions, Express delivery needs 3-5 days, Registered Mail needs 25-60 days.
Q: What is the process for returns or replacement of DS12R887-33?
All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the DS12R88733 we delivered, we will accept the replacement or return of the DS12R887-33 only when all of the below conditions are fulfilled:
(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.
(2)We are informed of the defect described above within 90 days after the delivery of DS12R887-33.
(3)The DS12R887-33 is unused and only in the original unpacked packaging.
Two processes to return the products:
(1)Inform us within 90 days
(2)Obtain Requesting Return Authorizations
More details about return electronic components please see our Return & Change Policy.
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Maxim Integrated

Maxim Integrated Products is a global range of linearity, mixed-signal integrated circuits (IC) design, R & D and manufacturing leader, has designed, developed, and manufactured analog, mixed-signal, high-frequency, and digital circuits that enable all four of these key interactions....
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