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  • MAX3218CAP

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RS-232 Interface IC Integrated Circuits (ICs)

  • Package/Case :
  • SSOP-20
  • Product Categories :
  • RS-232 Interface IC
  • RoHs Status:
  • Lead free / RoHS Compliant
  • In-stock:
  • 419


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MAX3218CAP Product Details

The MAX3218CAP RS-232 transceiver is intended for battery-powered EIA/TIA-232E and V.28/V.24 communications interfaces that need two drivers and two receivers with minimum power consumption from a single low-voltage supply. It provides a wide +1.8V to +4.25V operating voltage range while maintaining true RS-232 and EIA/TIA-562 voltage levels. The MAX3218CAP runs from two alkaline, NiCd, or NiMH cells without any form of voltage regulator. A guaranteed 120kbps data rate provides compatibility with popular software for communicating with personal computers. Supply current is reduced to 1μA with Maxim's new AutoShutdown feature. When the MAX3218CAP does not sense a valid signal level on the receiver inputs, the on-board power-supply and drivers shut down. This occurs if the RS-232 cable is disconnected or if the transmitters of the connected peripheral are turned off. The system turns on again when a valid level is applied to either RS-232 receiver input. As a result, the system saves power without changes to the existing software. Additionally, the MAX3218CAP can be forced into or out of shutdown, under logic control. While shut down, all receivers can remain active or can be disabled under logic control, permitting a system incorporating the CMOS MAX3218CAP to monitor external devices while in low-power shutdown. Three-state drivers are provided on both receiver outputs so that multiple receivers, generally of different interface standards, can be on the same bus. The MAX3218CAP is available in 20-pin DIP and SSOP packages.


  • 1μA Supply Current Using AutoShutdown
  • Operates Directly from Two Alkaline, NiCd or NiMH Cells
  • +1.8V to +4.25V Single-Supply Voltage Range
  • 120kbps Data Rate Guaranteed
  • Low-Cost Surface-Mount Components
  • Meets EIA/TIA-232E Specifications
  • Three-State Receiver Outputs
  • Flow-Through Pinout
  • On-Board DC-DC Converters
  • 20-Pin SSOP and DIP Packages


  • Battery-Powered Applications
  • Cell Phones
  • Handheld Equipment
  • PDAs
  • Peripherals
  • Subnotebook Computers

MAX3218CAP Block Diagram
(Picture: Diagram)

Technical Parameters

  • Data Rate
  • 120 Kbps
  • Operating Supply Voltage
  • 3 V
  • Supply Current
  • 3 mA
  • Operating Temperature Range
  • 0 C to + 70 C
  • Mounting Style
  • Package / Case
  • SSOP-20
  • Packaging
  • Tube
  • Function
  • Transceiver
  • Number of Drivers
  • 2
  • Number of I/Os
  • 8
  • Number of Receivers
  • 2
  • Propagation Delay Time ns
  • 1 us, 2.7 us
  • Series
  • MAX3218
  • Shutdown
  • Yes
  • Factory Pack Quantity
  • 66

MAX3218CAP Documents

MAX3218CAP Related Products

Ratings and Reviews (1)

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  • **iran***

    Very fast.!!

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Estimated Delivery Time: May 22 - May 27 days (choose Expedited at checkout).

Shipping & Payment


  • Shipping Type
  • Ship Fee
  • Lead Time
  • $20.00-$40.00 (0.50 KG)
  • 2-5 days
  • $20.00-$40.00 (0.50 KG)
  • 3-7 days
  • $20.00-$45.00 (0.50 KG)
  • 2-5 days
  • $25.00-$65.00 (0.50 KG)
  • 2-5 days
  • $25.00-$45.00 (0.50 KG)
  • 5-14 days
  • $2.00-$3.00 (0.10 KG)
  • 7-30 days

Processing Time:Shipping fee depend on different zone and country.


  • Terms of payment
  • Hand Fee
  • Payment Site
  • charge US$30.00 banking fee.
  • charge 4.0% service fee.
  • charge 3.5% service fee.
  • charge US$0.00 banking fee.
  • charge US$0.00 banking fee.

We provide high quality products, thoughtful service and after sale guarantee

  • We have rich products, can meet your various needs.

    We have rich products, can meet your various needs.

  • Minimum order quantity starts from 1pcs.

    Minimum order quantity starts from 1pcs.

  • Lowest international shipping fee starts from US$2.00.

    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

    Step2: Vacuum Packaging

  • Step3:Anti-static bag

    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.We provide 90 days warranty.

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 MAX3218CAP 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 MAX3218CAP devices; we pay more attention to the channels and quality of MAX3218CAP products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
Q: How to find the detailed information of MAX3218CAP chips? Including MAXIM original factory information, RS-232 Interface IC application, MAX3218CAP pictures?
You can use Jotrin's intelligent search engine, or filter by RS-232 Line Driver/Receivers category, or find it through Maxim Integrated Information page.
Q: Are the MAXIM's MAX3218CAP 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 MAX3218CAP, it is recommended to confirm the order with Jotrin salesperson or online customer service before payment.
Q: Can I place an order offline?
Yes. We accept offline orders.
We can provide order placement service. You only need to log in, click "My Orders" to enter the transaction management, and you will see the "Order Details" interface. After checking it, select all and click "Place Order". In addition, you can enjoy coupons or other selected gifts when placing orders online.
Q: What forms of payment can I use in Jotrin?
TT Bank, Paypal, Credit Card, Western Union, and Escrow is all acceptable.
Q: How is the shipping arranged and track my package?
Customers can choose industry-leading freight companies, including DHL, FedEx, UPS, TNT, and Registered Mail.
Once your order has been processed for shipment, our sales will send you an e-mail advising you of the shipping status and tracking number.
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 MAX3218CAP?
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 MAX3218CAP we delivered, we will accept the replacement or return of the MAX3218CAP 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 MAX3218CAP.
(3)The MAX3218CAP 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.
Q: How to contact us and get support, such as MAX3218CAP datasheet pdf, MAX3218 pin diagram?
Need any After-Sales service, please feel free contact us:

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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