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LMC7211BIM/NOPB 其他数据使用手册 - TI（德州仪器）
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TI（德州仪器）
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比较器
封装:
SOIC-8
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LMC 系列 CMOS 比较器### 比较器，Texas InstrumentsTexas Instruments 系列电压比较器不仅包括传统单、双和四路比较器封装，还包括窗口比较器及过压和欠压监控器。 尽管比较器和运算放大器表面上是相似的设备，但它们在实用应用中的操作大大不同。 运算放大器适用于线性操作，附带适当反馈，而比较器定制用于快速切换且通常在开路模式中操作。 专用电压比较器具有明显较短的传播延迟，且可在饱和条件下具有更快的响应时间。 大多数比较器还更耐受高差分输入电压，且很多比较器具有开路集电极输出，从而可与其他设备并联操作。
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LMC7211BIM/NOPB数据手册
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LMC7221
Tiny CMOS Comparator with Rail-To-Rail Input and Open
Drain Output
General Description
The LM7221 is a micropower CMOS comparator available in
the space saving 5-Pin SOT23 package. This makes this
comparator ideal for space and weight critical designs. The
LMC7221 is also available in the 8-Pin SOIC package. The
LMC7221 is supplied in two offset voltage grades, 5 mV and
15 mV.
The open drain output can be pulled up with a resistor to a
voltage which can be higher or lower than the supply
voltage — this makes the part useful for mixed voltage sys-
tems.
For a tiny comparator with a push-pull output, please see the
LMC7211 datasheet.
Features
n Tiny 5-Pin SOT23 package saves space
n Package is less than 1.43 mm thick
n Guaranteed specs at 2.7V, 5V, 15V supplies
n Typical supply current 7 µA at 5V
n Response time of 4 µs at 5V
n LMC7221 — open drain output
n Input common-mode range beyond V
−
and V
+
n Low input current
Applications
n Mixed voltage battery powered products
n Notebooks and PDAs
n PCMCIA cards
n Mobile communications
n Alarm and security circuits
n Driving low current LEDs
n Direct sensor interface
Connection Diagrams
8-Pin SOIC
01234601
Top View
5-Pin SOT23
01234602
Top View
Ordering Information
Package Part Number Package Marking Transport Media NSC Drawing
8-Pin SOIC
LMC7221AIM
LMC7221AIM
95 Units/Rail
M08A
LMC7221AIMX 2.5k Units Tape and Reel
LMC7221BIM
LMC7221BIM
95 Units/Rail
LMC7221BIMX 2.5k Units Tape and Reel
5-Pin SOT23
LMC7221AIM5
C01A
1k Units Tape and Reel
MF05A
LMC7221AIM5X 3k Units Tape and Reel
LMC7221BIM5
C01B
1k Units Tape and Reel
LMC7221BIM5X 3k Units Tape and Reel
September 2006
LMC7221 Tiny CMOS Comparator with Rail-To-Rail Input and Open Drain Output
© 2006 National Semiconductor Corporation DS012346 www.national.com
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