Datasheet 搜索 > 接口芯片 > Maxim Integrated（美信） > MAX232EESE+T 数据手册 > MAX232EESE+T 开发手册 3/13 页
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MAX232EESE+T 开发手册 - Maxim Integrated（美信）
制造商:
Maxim Integrated（美信）
分类:
接口芯片
封装:
NSOIC-16
描述:
MAXIM INTEGRATED PRODUCTS MAX232EESE+T 芯片, RS232 收发器, 120KBPS, 5.5V, NSOIC-16
Pictures:
3D模型
符号图
焊盘图
引脚图
产品图
MAX232EESE+T数据手册
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of 13 Go
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Figure 2. Evolution of the RS-232 transceiver.
Integrated charge pumps
The original RS-232 IC required two supply rails (+15V and -15V) to provide the appropriate voltages for the
RS-232 positive and negative transmitter output swing. (See Figure 3, Channel 1.) In applications where
only a single supply was available, an external charge pump was used to double and thus invert the single-
supply source. In the late 1980s Maxim integrated a charge pump into the RS-232 transceiver, creating the
first RS-232 IC to operate off a single supply, the MAX232. This early generation RS-232 transceiver
doubled and inverted the supply voltage to supply the RS-232 transmitter circuitry.
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