ST3917B - Brand New STMicroelectronics IC Chips
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Description
The ST3917B is an electronic component model used for speech and dialer functions in telecommunication devices. It features a DC line interface circuit that terminates the telephone line, an analog amplifier for speech transmission, and supports both DTMF and pulse dialing. With the integration of a tone ringer, this component can enable the production of a complete telephone using just two ICs.
Specifications and features
- 2 to 4 wires conversion capability
- Provides the proper DC path for line current and allows parallel phone operation
- Symmetrical high impedance microphone inputs suitable for dynamic, electret, or piezoelectric transducer
- Asymmetrical earphone output suitable for dynamic transducers
- Internal line loss compensation fixed by A.G.C.
- Muting functions to disable speech during dialing and transmit amplifier during conversation
- LED indicator for keyboard illumination or tone mode indication
Application Scenarios
The ST3917B is suitable for use in telecommunication devices that require speech and dialer functions. It can be used in the production of telephones, mobile phones, and other communication devices.
Comparison
Advantages- 2 to 4 wires conversion capability allows flexibility in line connection
- High impedance microphone inputs support various types of transducers
- Muting functions provide control over speech and transmit amplifier
- LED indicator improves user experience and provides visual feedback
Disadvantages- Limited to 32 digits for last number redial buffer
- Flash duration and soft switch options may not be suitable for all applications
- Requires the use of a 3.579545MHz ceramic resonator
- Low operating voltage may limit compatibility with certain systems
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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
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Shipping option:
DHL, FedEx, EMS, SF Express, and Registered Air MailShipping tracking:
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How to Buy:
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Popular parts of the same kind
- Datasheet: Download ST3917B
- Chipdatas Part: CD94-ST3917B
- Warehouse: China, Hong Kong
- Dispatch: Within 24 hours
- Free Shipping: Yes
- Prority Shipping: Yes, 3-5 days
- Last Updated: 2024/10/01 00:50 +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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