L3240中文資料意法半導(dǎo)體數(shù)據(jù)手冊(cè)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(hào)：
L3240
- 制造商：
STMicroelectronics
| 供應(yīng)商 | 型號(hào) | 品牌 | 批號(hào) | 封裝 | 庫(kù)存 | 備注 | 價(jià)格 |
|---|---|---|---|---|---|---|---|
ST/意法 |
23+ |
NA/ |
990 |
優(yōu)勢(shì)代理渠道,原裝正品,可全系列訂貨開增值稅票 |
詢價(jià) | ||
ST |
23+ |
DIP-8 |
3500 |
全新原裝假一賠十 |
詢價(jià) | ||
ST/意法 |
22+ |
SOP-8 |
100000 |
代理渠道/只做原裝/可含稅 |
詢價(jià) | ||
ST/意法 |
2022+ |
SOP-8 |
30000 |
進(jìn)口原裝現(xiàn)貨供應(yīng),原裝 假一罰十 |
詢價(jià) | ||
ST |
23+ |
DIP8 |
12800 |
正規(guī)渠道,只有原裝! |
詢價(jià) | ||
ST |
23+ |
SO-8 |
7000 |
絕對(duì)全新原裝!100%保質(zhì)量特價(jià)!請(qǐng)放心訂購(gòu)! |
詢價(jià) | ||
ST/意法 |
22+ |
SOP-8 |
9845 |
只做原裝正品現(xiàn)貨!或訂貨假一賠十! |
詢價(jià) | ||
ST |
22+ |
SOP8 |
5000 |
詢價(jià) | |||
STM |
23+ |
NA |
806 |
專做原裝正品,假一罰百! |
詢價(jià) | ||
ST |
21+ |
DIP |
6500 |
全新原裝現(xiàn)貨 |
詢價(jià) |
