LS256

Pinout




Specifications

Symbol	Parameter	Value	Unit
VL	Line Voltage (3ms pulse duration)	22	V
IL	Forward Line Current	150	mA
IL	Reverse Line Current	-150	mA
Ptot	Total Power Dissipation at Tamb = 70	1	W
Top	Operating Temperature	45 to 70
Tstg, Tj	Storage and Junction Temperature	-65 to +150

Description

The LS256 is a monolithic integrated circuit in 16- lead dual in-line and SO20 plastic packages to replacethe hybridcircuit in telephoneset.It workswith the same type of transdurcers for both transmitter and receiver (typically piezoceramic capsules, butthe devicecan work also with dynamic ones).Many of its electrical characteristics can be controlled by means of external components to meet different specifications.

In additionto the speech operation, the LS256 acts as an interface for theMF tone signal.