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特价供应 LS1240A 热卖产品 提供报价及技术参数
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LS1240A 详细介绍
LS1240A 型号
UTC品牌系列产品 LS1240A
LS1240A 批号 07+
LS1240A 数量 15000
LS1240A 封装 DIP-8
LS1240A 包装 50PCS/管
LS1240A 备注 5 day/original(原)/Rohs
LS1240A 应用 电话振铃集成电路
LS1240A PDF技术资料 
LS1240A.pdf
ELECTRONIC TONE RINGER
WITH BUILT-IN BRIDGE
RECTIFIER
DESCRIPTION
The UTC LS1240A is monolithic integrated circuits and
designed to be as a telephone ringer. It can drive a piezo-ceramic
converter(buzzer) directly. The output current capacity of UTC
LS1240A is higher than standard ringer. For driving a dynamic
loudspeaker, UTC LS1240A needs only a decoupling capacitor to
replace the usual transformer in use.
FEATURES
* Low current consumption.
* Integrated rectifier bridge with zener diodes to overvoltage
Protection.
* Minimum external circuitry.
* Both frequencies of tone and switching are adjustable by external
components.
* Integrated voltage and current hysteresis.
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