U4030B
TEMIC Semiconductors
Telephone Speech Circuit
U4030B
Telephone Speech Circuit
Description
The U4030B is an electronic speech circuit for standard and feature telephones. It replaces the hybrid transformer, earphone and microphone interface and the supply voltage generation for externa
U403
Dual N-Channel JFET SwitchDual N-Channel JFET Switch
CORPORATION
U401 – U406
FEATURES ABSOLUTE MAXIMUM RATINGS (TA = 25oC unless otherwise specified) Gate-Drain or Gate-Source Voltage . . . . . . . . . . . . . . . . . 50V Gate Current (Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . 10mA Storage Temperature Ra
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