鈥?/div>
Asynchonous Reset (RS) Input
Description
The PS395 eight-channel, serially controlled, single-pole/single-
throw (SPST) analog switch offers eight separately controlled
switches that conduct equally well in either direction. ON-resis-
tance (100鈩?max.) is matched between switches to 5鈩?max. and is
flat (10鈩?max.) over the specified signal range.
These CMOS devices can operate continuously with dual power
supplies ranging from 鹵2.7V to 鹵8V or a single supply between
+2.7V and +16V. Each switch can handle rail-to-rail analog signals.
The off leakage current is only 0.1nA at +25擄C or 5nA at +85擄C.
Upon power-up, all switches are off, and the internal shift registers
are reset to zero. The PS395 is electrically equivalent to two PS391
quad switches controlled by a serial interface, and is pin compat-
ible with the PS335.
The serial interface is compatible with SPI聶/QSPI聶 and
Microwire聶. Functioning as a shift register, it allows data (at DIN)
to be clocked-in synchronously with the rising edge of clock
(SCLK). The shift register聮s output (DOUT) enables several PS395s
to be daisy chained.
All digital inputs have 0.8V to 2.4V logic thresholds, ensuring both
TTL- and CMOS-logic compatibility when using 鹵5V supplies or a
single +5V supply.
Applications
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鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
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Data Acquisition Systems
Audio Switching and Routing
Test Equipment
PBX, PABX
Telecommunication Systems
Battery-Powered Systems
Pin Description
Name
CLK
V+
DATA
IN
GND
24
EN
23
RS
22
DATA
OUT
21
V鈥?/div>
20
NO
7
19
COM
7
18
NO
6
17
COM
6
16
NO
5
15
COM
5
14
NO
4
13
COM
4
Function
Serial Clock Digital Input
Positive Analog Supply Voltage Input
Serial Data Digital Input
Ground
Normally Open Analog Switches 0聳7
Common Analog Switches 0聳7
Negative Analog Supply Voltage Input
Serial Data Digital Output
Reset Input
(RESET)
Chip- Select Digital Input
Pin Configurations
Top View
PS395
CLK
1
V+
2
DATA
IN
3
GND
4
NO
0
5
COM
0
6
NO
1
7
COM
1
8
NO
2
9
COM
2
10
NO
3
11
COM
3
12
NO
0
聳NO
7
COM
0
聳COM
7
V聳
DATA
OUT
RS
CS
8-Bit
Decoding
Logic
Note:
NO and COM pins are identical and interchangeble. Either may
be considered as an input or an output; signals pass equally
well in either direction.
SPI & QSPI are trademarks of Motorola, Inc. Microwire is a trademark
of National Semiconductor Corporation
DIP/SO
1
PS8462
02/22/00
PS395ENG相關(guān)型號(hào)PDF文件下載
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英文版
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SPST Analog Switch
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英文版
SPST Analog Switch
ETC
1
2
3
4
5
6
7
8
9
10
11
12
13
