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Description
ST9S424A-SDG is a line interface designed to implement Modem application up to 56Kbps and Voice applications. It interfaces between telephone line and capacitive isolation barrier, allowing for a complete D.A.A. with ST75951 which interfaces between the barrier and DSP or HSP signals. When the CLID external transistor switch is enabled, it draws a limited amount of current from the line. In off-hook state, ST9S424A-SDG has a DC voltage of 4V at a 20mA line current, making it compatible with most public networks. The return loss is externally adjustable to real or complex impedance. In the case of a wrong connection in a digital phone line, it detects the overcurrent value and sends an alert signal through the capacitive isolation barrier to ST75951. Before starting a line connection, it can check if the line is being used by another terminal connected on the same telephone line.
Specifications and features
- Hook switch driver
- Ring indicator
- Line interface with DC termination (4V at 20mA)
- 2W/4W hybrid converter with flat frequency response down to 10Hz for 56Kps modem
- Interface with capacitive isolation barrier
- Caller ID interface
- Digital phone line or overloop current limit detect
- Phone line in use check
Application Scenarios
- Modems up to V.34, 33.6Kbps, and 56Kbps
- PCMCIA cards
- Fax machines
- Personal digital assistants
- Answering machines
- High feature phones
- Webphones and set-top boxes
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Similar parts: 430483 , Click to view
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Datasheet
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Shopping guide
Delivery period:
- - Will ship out in 2-3 days
- - DHL Express: 3-7 business days
- - DHL eCommerce: 12-22 business days
- - FedEx International Priority: 3-7 business days
- - EMS: 10-15 business days
Shipping fee:
- - Automatic Email notification (above 5 times)
- - View in your order page
Shipping option:
DHL, FedEx, EMS, SF Express, and Registered Air MailShipping tracking:
- - Automatic Email notification (above 5 times)
- - View in your order page
How to Buy:
- - In-stock, Add to cart > Check out > Submit order > Complete payment >Delivery.
- - Inquiry, Add to inquiry sheet/Submit bom/inquire file/Send email us > Quote > Place order > Complete payment >Delivery.
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Payment:
- - Paypal,Credit Card includes Visa, Master, American Express.
- - Wire transfer, include Local bank transfer.
- - Western Union.
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Popular parts of the same kind
- Datasheet: Download ST9S424A-SDG
- Chipdatas Part: CD88-ST9S424A-SDG
- Warehouse: China, Hong Kong
- Dispatch: Within 24 hours
- Free Shipping: Yes
- Prority Shipping: Yes, 3-5 days
- Last Updated: 2024/10/02 12:02 +0800
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- Full Refund if you don't receive your order
- Full or Partial Refund , If the item is not as described
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The fee is charged according to the rule of PayPal.
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The fee is charged according to the rule of PayPal.
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Western Union charge US$0.00 banking fee.
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We recommend to use bank transfer for large orders to save on handling fees.
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Registered Mail(www.singpost.com)
Free shipping without minimum order.