ST LS1240AD1

音调振铃器26V

Overview

The Contek LS1240A is a monolithic integrated circuit, designed to be as a telephone ringer . It can drive directly a piezo-ceramic converter (buzzer). The output current capacitity of Contek LS1240A is higher than Contek LS1240, For driving a dynamic loudspeaker , Contek LS1240A needs only a decoupling capacitor.

Features

Tube Package
Available in the 8-SOIC (0.154, 3.90mm Width) package
Operating supply current of 30mA
Operating with the requency of 1.22kHz

Surface Mount Mounting Type

Applications

There are a lot of STMicroelectronics
LS1240AD1 Telecom applications.

• Channel Service Units (CSUs): T1/E1/J1
• Fractional T1/E1/J1
• BITS Timing
• Digital Access Cross-connect System (DACs)
• Digital Cross-connect Systems (DCS)
• Frame Relay Switches and Access Devices (FRADS)
• ISDN Primary Rate Interfaces (PRA)
• PBXs channel bank
• PCM channel bank
• T3 channelized access concentrators