L3240中文資料意法半導(dǎo)體數(shù)據(jù)手冊PDF規(guī)格書
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DESCRIPTION
L3240 is a monolithic integrated circuit designed to replace the mechanical bell in telephone sets, in connection with an electro acoustical converter.The device can drive either directly a piezo ceramic converter (buzzer) or a small loudspeaker. In this case a transformer is needed. The two tone frequencies generated are switched by an internal oscillator in a fast sequence and made audible across output amplifiers in the transducer; both tone frequencies and the switching frequency can be externally adjusted.
. LOW CURRENT CONSUMPTION, IN ORDER TO ALLOW THE PARALLEL OPERATION OF 4 DEVICES
. INTEGRATED RECTIFIER BRIDGE WITH ZENER DIODES TO PROTECT AGAINST OVERVOLTAGES
. LITTLE EXTERNAL CIRCUITRY
. TONE AND SWITCHING FREQUENCIES AD JUSTABLE BY EXTERNAL COMPONENTS
. INTEGRATED VOLTAGE AND CURRENT HYSTERESIS
. COMPLEMENTARY OUTPUT CONFIGURATION
產(chǎn)品屬性
- 型號：
L3240
- 制造商：
STMicroelectronics
| 供應(yīng)商 | 型號 | 品牌 | 批號 | 封裝 | 庫存 | 備注 | 價格 |
|---|---|---|---|---|---|---|---|
ST/ |
22+23+ |
DIP8 |
8000 |
新到現(xiàn)貨，只做原裝進口 |
詢價 | ||
ST/意法 |
25+ |
SOP-8 |
54658 |
百分百原裝現(xiàn)貨 實單必成 |
詢價 | ||
ST/意法 |
22+ |
SOP-8 |
100000 |
代理渠道/只做原裝/可含稅 |
詢價 | ||
ST/意法 |
24+ |
NA/ |
990 |
優(yōu)勢代理渠道,原裝正品,可全系列訂貨開增值稅票 |
詢價 | ||
ST |
92+/ |
SOP |
4 |
一級代理,專注軍工、汽車、醫(yī)療、工業(yè)、新能源、電力 |
詢價 | ||
ST |
25+ |
SOP8 |
18000 |
全新原裝 |
詢價 | ||
STM |
23+ |
NA |
806 |
專做原裝正品,假一罰百! |
詢價 | ||
ST |
22+ |
SOP8 |
5000 |
詢價 | |||
SGS |
DIP8 |
8560 |
一級代理 原裝正品假一罰十價格優(yōu)勢長期供貨 |
詢價 | |||
ST |
24+ |
原廠原封 |
16900 |
支持樣品,原裝現(xiàn)貨,提供技術(shù)支持! |
詢價 |
