ST7554 Datasheet PDF - STMicroelectronics

GENERAL
. 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 98 AND NT 5.0 SUPPORT
. TAPI 2.0 COMPLIANT
. SOFTWARE UPGRADABLE
. MINIMUM SYSTEM REQUIREMENTS:
. USB MOTHERBOARD, 166MHz PENTIUM PROCESSOR WITH MMX TECHNOLOGY, WINDOWS 98 AND 16MBYTES RAM OR WINDOWS NT 5.0 AND 32MBYTES RAM

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