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ST7554

Features: `SINGLE 9.216MHz CRYSTAL OSCILLATOR`INTEGRATED ANALOG AND DIGITAL 3.3V REGULATORS`DEDICATED PINS FOR RING, OFF-HOOK, CLID, LOOP CURRENT SENSE`0.5m CMOS PROCESS`TQFP48 (7 x 7 mm) PACKAGEApplication·USB HOT PLUG & PLAY INTERFACE·DIRECT INTERFACE TO ST MAFE+DAA CHIP-SET ST75951/ST952 FO...

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SeekIC No. : 004506805 Detail

ST7554: Features: `SINGLE 9.216MHz CRYSTAL OSCILLATOR`INTEGRATED ANALOG AND DIGITAL 3.3V REGULATORS`DEDICATED PINS FOR RING, OFF-HOOK, CLID, LOOP CURRENT SENSE`0.5m CMOS PROCESS`TQFP48 (7 x 7 mm) PACKAGEApp...

ST7554 Data Sheet

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Part Number:
ST7554
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2026/1/16

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Product Details

Description



Features:

`SINGLE 9.216MHz CRYSTAL OSCILLATOR
`INTEGRATED ANALOG AND DIGITAL 3.3V REGULATORS
`DEDICATED PINS FOR RING, OFF-HOOK, CLID, LOOP CURRENT SENSE
`0.5m CMOS PROCESS
`TQFP48 (7 x 7 mm) PACKAGE



Application

·USB HOT PLUG & PLAY INTERFACE
·DIRECT INTERFACE TO ST MAFE+DAA CHIP-SET ST75951/ST952 FOR WORLD- WIDE DAA DESIGN OR TO STLC7550 FOR TRADITIONAL DAA DESIGN
·WINDOWS(C) 98 AND NT 5.0 SUPPORT
·TAPI 2.0 COMPLIANT
·SOFTWARE UPGRADABLE
·MINIMUM SYSTEM REQUIREMENTS:
·USB MOTHERBOARD, 166MHz PENTIUM(C) PROCESSOR WITH MMX(TM) TECHNOLOGY, WINDOWS(C) 98 AND 16MBYTES RAM OR WINDOWS(C) NT 5.0 AND 32MBYTES RAM




Pinout

Connection Diagram


Description

The ST7554 is a single chip host signal processing Modem/fax/voice controller that supports data rates up to 56Kbps. All data pump and protocol functions are executed on the host PC's processor. This product has been developed in cooperation with Smart Link Ltd, who ported "USB-Modio", its host based Modem and system software into ST system
and hardware platform. The ST7554 directly con- nects to ST high performance Modem analog front- end (MAFE) STLC7550 or to the highly integrated MAFE+DAA chip-set ST75951/ST952. The ST7554 also features an Universal Serial Bus (USB) inter- face for direct connection to the host PC for maxi- mum flexibility and real plug & play operation.




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