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Contents
Features ...........................................................1
Applications ...................................................... 1
Pin Assignment ................................................1
Block Diagram..................................................2
Selection Guide................................................3
Output Configurations ......................................4
Advantage over the S-805 Series ....................5
Absolute Maximum Ratings .............................6
Electrical Characteristics..................................7
Test Circuits ...................................................23
Technical Terms ............................................24
Operation .......................................................26
Characteristics ...............................................28
Measuring Circuits .........................................31
Application Circuit Examples..........................32
Notes .............................................................. 34
Dimensions, Taping .......................................35

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Rev.2.0
* S-807 Series will be summarized into S-808 Series.
HIGH-PRECISION VOLTAGE DETECTOR
S-807 Series
The S-807 Series is an adjustment-free high-precision voltage detector
made using the CMOS process. The output voltage is fixed internally,
with an accuracy of ±2.4%. Two output types are available, Nch open-
drain and CMOS output (active “H” and “L”), both of which have various
product lineups. This series features much lower current consumption
and higher detection voltage accuracy than the S-805 Series. Super-
miniature package is added for the S-807 Series, the S-807XXSX
Series. This small SOT-23-5 style package allows the designer to
shrink the size of his finished product. Electrical specs for the S-
807XXSX Series are the same as the standard S-807 Series. Output
forms of the S-807XXSX Series are Nch open-drain and CMOS active
“L”.
n Features
Ultra-low current consumption
1.0 µA typ. (VDD=4.5 V)
High-precision detection voltage ±2.4%
Wide operating voltage range
1.0 to 15 V
Good hysteresis characteristics
5% typ.
Wide operating temperature range -30°C to+80°C
3 output forms : Nch open-drain, CMOS output active H ,
active L
TO-92, SOT-89-3 and SOT-23-5 package
n Applications
Battery checker
Battery backup for memories
Power failure detector
Reset for microcomputer
Store signal detector for non-
volatile RAM
n Pin Assignment
(1) TO-92
1 OUT
2 VDD
3 VSS
(2) SOT-89-3
Top view
1 OUT
2 VDD
3 VSS
1 2 3 Bottom view
12 3
Figure 1
(3) SOT-23-5
Top view
54
123
1 OUT
2 VDD
3 VSS
4 NC
5 NC
Seiko Instruments Inc.
1

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HIGH-PRECISION VOLTAGE DETECTOR
S-807 Series
n Block Diagram
(1) Nch open-drain output
VDD 2
-
+
(2) CMOS active low output
(3) CMOS active high output
VSS 3
VDD 2
-
+
VSS 3
VDD 2
-
+
VSS 3
Figure 2
1 OUT
*
1 OUT
*
1 OUT
* Parasitic diode
2 Seiko Instruments Inc.

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HIGH-PRECISION VOLTAGE DETECTOR
S-807 Series
n Selection Guide
Table 1
Detection
voltage
range (V)
Hysteresis
width
typ. (V)
CMOS output (Low)
CMOS output (High)
Nch open-drain
TO-92
SOT-89-3*
SOT-23-5*
TO-92
SOT-89-3*
TO-92
SOT-89-3*
SOT-23-5*
1.5 V±2.4% 0.075
S-80715AL-AC-X
S-80715AN-DC-X
1.6 V±2.4% 0.08
S-80716AL-AD-X
S-80716AN S-80716AN-DD-X
1.7 V±2.4% 0.085 S-80717AL S-80717AL-AE-X
S-80717AN S-80717AN-DE-X S-80717SN-DE-X
1.8 V±2.4% 0.09 S-80718AL S-80718AL-AF-X S-80718SL-AF-X
S-80718AH-BF-T1 S-80718AN S-80718AN-DF-X
1.9 V±2.4% 0.095 S-80719AL S-80719AL-AG-X S-80719SL-AG-X
S-80719AN S-80719AN-DG-X S-80719SN-DG-X
2.0 V±2.4%
0.1
S-80720AL-AH-X S-80720SL-AH-X
S-80720AN S-80720AN-DH-X S-80720SN-DH-X
2.1 V±2.4% 0.105 S-80721AL S-80721AL-AJ-X S-80721SL-AJ-X
S-80721AN S-80721AN-DJ-X S-80721SN-DJ-X
2.2 V±2.4% 0.11 S-80722AL S-80722AL-AK-X
S-80722AN S-80722AN-DK-X
2.3 V±2.4% 0.115 S-80723AL S-80723AL-AL-X S-80723SL-AL-X
S-80723AN S-80723AN-DL-X S-80723SN-DL-X
2.4 V±2.4% 0.12 S-80724AL S-80724AL-AM-X
S-80724AN S-80724AN-DM-X S-80724SN-DM-X
2.5 V±2.4% 0.125 S-80725AL S-80725AL-AN-X S-80725SL-AN-X
S-80725AH-BN-X S-80725AN S-80725AN-DN-X S-80725SN-DN-X
2.6 V±2.4% 0.13
S-80726AL-AP-X
S-80726AN S-80726AN-DP-X
2.7 V±2.4% 0.135 S-80727AL S-80727AL-AQ-X S-80727SL-AQ-X
S-80727AN S-80727AN-DQ-X S-80727SN-DQ-X
2.8 V±2.4% 0.14
S-80728AL-AR-X S-80728SL-AR-X
S-80728AN S-80728AN-DR-X S-80728SN-DR-X
2.9 V±2.4% 0.145 S-80729AL S-80729AL-AS-X
S-80729AN-DS-X
3.0 V±2.4% 0.15 S-80730AL S-80730AL-AT-X S-80730SL-AT-X
S-80730AN S-80730AN-DT-X S-80730SN-DT-X
3.1 V±2.4% 0.155 S-80731AL S-80731AL-AV-X
S-80731AH S-80731AH-BV-X S-80731AN S-80731AN-DV-X
3.2 V±2.4% 0.16 S-80732AL S-80732AL-AW-X S-80732SL-AW-X
S-80732AN S-80732AN-DW-X
3.3 V±2.4% 0.165 S-80733AL S-80733AL-AX-X S-80733SL-AX-X S-80733AH
S-80733AN S-80733AN-DX-X S-80733SN-DX-X
3.4 V±2.4% 0.17 S-80734AL S-80734AL-AY-X
S-80734AN S-80734AN-DY-X
3.5 V±2.4% 0.175 S-80735AL S-80735AL-AZ-X S-80735SL-AZ-X
S-80735AN S-80735AN-DZ-X S-80735SN-DZ-X
3.6V±2.4% 0.18
S-80736AL-A0-X
S-80736AN S-80736AN-D0-X
3.7V±2.4% 0.185 S-80737AL S-80737AL-A1-X
S-80737AN S-80737AN-D1-X
3.8 V±2.4% 0.19 S-80738AL S-80738AL-A2-X
S-80738AN S-80738AN-D2-X
3.9 V±2.4% 0.195 S-80739AL S-80739AL-A3-X
S-80739AN S-80739AN-D3-X
4.0 V±2.4%
0.2 S-80740AL S-80740AL-A4-X S-80740SL-A4-X S-80740AH S-80740AH-B4-X S-80740AN S-80740AN-D4-X S-80740SN-D4-X
4.1 V±2.4% 0.205 S-80741AL S-80741AL-A5-X
S-80741AN S-80741AN-D5-X
4.2 V±2.4% 0.21 S-80742AL S-80742AL-A6-X S-80742SL-A6-X
S-80742AN S-80742AN-D6-X S-80742SN-D6-X
4.3 V±2.4% 0.215 S-80743AL S-80743AL-A7-X
S-80743AN S-80743AN-D7-X
4.4 V±2.4% 0.22 S-80744AL S-80744AL-A8-X
S-80744AN S-80744AN-D8-X S-80744SN-D8-X
4.295
to
4.605
Release S-80744HL S-80744HL-U8-X
voltage
4.70 max.
4.5 V±2.4% 0.225 S-80745AL S-80745AL-A9-X S-80745SL-A9-X
S-80745AH-B9-X S-80745AN S-80745AN-D9-X S-80745SN-D9-X
4.6 V±2.4% 0.23 S-80746AL S-80746AL-EA-X
S-80746AN-JA-X
4.7 V±2.4% 0.235 S-80747AL S-80747AL-EB-X
S-80747AN-JB-X
4.8 V±2.4% 0.24
S-80748AL-EC-X
S-80748AN S-80748AN-JC-X
4.9 V±2.4% 0.245
S-80749AL-ED-X
S-80749AN-JD-X
5.0 V±2.4% 0.25
S-80750AL-EE-X S-80750SL-EE-X
S-80750AN S-80750AN-JE-X S-80750SN-JE-X
5.1 V±2.4% 0.255 S-80751AL
S-80751SL-EF-X
S-80751AN S-80751AN-JF-X S-80751SN-JF-X
5.2 V±2.4% 0.26
S-80752AL-EG-T1 S-80752SL-EG-T1
S-80752AN-JG-T1
5.3 V±2.4% 0.265
S-80753AN
5.5 V±2.4% 0.275
S-80755AL-EK-X
6.1 V±2.4% 0.305
S-80761SL-ER-X
6.3 V±2.4% 0.315
S-80763AN-JT-X
7.7V±2.4% 0.385
S-80777SN-J8-X
* The last digit of the model name changes depending upon the packing form when it is an SOT package product (S-807XXSX
Series is packed on tape).
S : Stick
T : Tape (T1 and T2 types are available depending on the direction of detectors on the tape.)
** Please ask our sales person if you need another detection voltage product.
Seiko Instruments Inc.
3

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HIGH-PRECISION VOLTAGE DETECTOR
S-807 Series
n Output Configurations
1. S-807 Series model numbering conventions
S-807 Series
Nch open-drain
(Lreset type)
Nis the last letter of
the model number.
Ex. S-80732AN
CMOS output
(Lreset type)
Lis the last letter of
the model number.
Ex. S-80718AL
CMOS output
(Hreset type)
His the last letter of
the model number.
Ex. S-80740AH
2. Output configurations and their implementations
Implementation
With different power supplies
With active low reset CPUs
With active high reset CPUs
As power resets employing CR circuits
With voltage divider resistors to vary (-VDET)
Nch CMOS (L) CMOS (H)
¡× ×
¡¡
×
× ×¡
¡× ×
¡× ×
Example with two power supplies
VDD1
VDD2
Examples with one power supply
VDD
VDD
V/D
Nch
CPU
OUT
VSS
V/D
CPU
CMOS OUT
VSS
V/D
CPU
Nch
OUT
VSS
Figure 3
or
4 Seiko Instruments Inc.