S-5842AAAAF-M6T1Y Datasheet, PDF (16/31 Pages) Seiko Instruments Inc – DUAL TRIP TEMPERATURE SWITCH IC

DUAL TRIP TEMPERATURE SWITCH IC (THERMOSTAT IC)
S-5842A Series
Rev.2.3_01
3. Delay circuit
The S-5842A Series sets the noise suppression time (tdelay) via the delay circuit. By this, the S-5842A Series prevents
false detection operations of DETH pin and DETL pin output.
The followings are the operation of the DETH pin output when the output logic is "H".
3. 1 The temperature is the detection temperature or less
The output from a comparator is "H", and the DETH pin output is "L". Due to noise or others, the output from a
comparator is inverted to "L" once; however, the DETH pin output keeps "L" if this status is tdelay or shorter.
3. 2 The temperature exceeds the detection temperature
The output from a comparator gets "L". And the DETH pin output gets "H" after the period has passed tdelay
or longer.
 Standard Circuit
Open
Open
RTH
RTL
VDD
S-5842A Series
DETH
R^*1
100 kΩ
R^*1
C_L
100 kΩ
C_IN
VSS
DETL
C_L
*1. Resistor (R) is unnecessary for CMOS output product.
Figure 13
Caution The above connection diagram will not guarantee successful operation. Perform thorough evaluation
using actual application to set the constant.
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