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S-80144CNPF-JK5TFG ๋ฐ์ดํ„ฐ์‹œํŠธ(HTML) 18 Page - Seiko Instruments Inc

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์ƒ์„ธ๋‚ด์šฉ  ULTRA-SMALL PACKAGE HIGH-PRECISION VOLTAGE DETECTOR WITH DELAY CIRCUIT (INTERNAL DELAY TIME SETTING)
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ULTRA-SMALL PACKAGE HIGH-PRECISION VOLTAGE DETECTOR WITH DELAY CIRCUIT (INTERNAL DELAY TIME SETTING)
S-801 Series
Rev.3.3_00
18
Seiko Instruments Inc.
2. Hysteresis Width (VHYS)
Hysteresis width is the voltage difference between the detection voltage and the release voltage
(The voltage at point B
โˆ’The voltage at point A=V
HYS in Figure 11). The existence of the hysteresis
width prevents malfunction caused by noise on input signal.
3. Delay Time (tD)
Delay time is a time internally measured from the instant at which input voltage to the VDD pin
exceeds the release voltage (
+V
DET) to the point at which the output of the OUT pin inverts.
The
delay time is fixed in each series distinguished by A, B and C.
S-801xxAx series: typ.
50 ms
S-801xxBx series: typ.
100 ms
S-801xxCx series: typ.
200 ms
The output of the OUT pin can be inverted in a short delay time (tD2) by setting the DS pin High (Refer
to Figure 16).
tD2
tD1
VDD
at DS
=โ€Hโ€
OUT
V
+V
DET
Figure 16
4. Through-type Current
The through-type current refers to the current that flows instantaneously at the time of detection and
release of a voltage detector. The through-type current flows at a frequency of 20 kHz during release
delay time since the internal logic circuit operates.


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