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參數(shù)資料
| 型號： | PS301CPA |
| 英文描述： | SPST Analog Switch |
| 中文描述： | SPST模擬開關 |
| 文件頁數(shù)： | 7/7頁 |
| 文件大?。?/td> | 260K |
| 代理商： | PS301CPA |
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7
PS8187A
06/29/99
PS301/PS302/PS303
Precision, Single Supply SPST Analog Switches
Overvoltage
Proper power-supply sequencing is recommended for all CMOS
devices. Do not exceed the absolute maximum ratings, because
stresses beyond the listed ratings may cause permanent damage to
the devices. Always sequence V+ on first, and then logic inputs.
If power-supply sequencing is not possible, add two small signal
diodes or two current limiting resistors in series with the supply
pins for overvoltage protection (Figure 1). Adding diodes reduces
the analog signal range, but low switch resistance and low leakage
characteristics are unaffected.
Applications Information
Figure 1. Overvoltage protection is accomplished by using two
external blocking diodes or two current limiting resistors.
V+
Positive Supply
COM
NO
Vg
V-
Protection
GND
When powered from +5V the PS301/PS302/PS303 can be oper-
ated with either TTL- or CMOS-Logic levels. If V+ is different
than +5V, the logic threshold level will vary.
Power consumption is minimal when the logic control voltages
reach V+ or GND.
Logic Levels
Ordering Information
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8
Pericom Semiconductor Corporation
2380 Bering Drive San Jose, CA 95131 1-800-435-2336 Fax (408) 435-1100 http://www.pericom.com
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