ST TS3704 User Manual
Micropower quad CMOS voltage comparators
Inverting Input 2
Output 2
Non-inverting Input 2
Output 1
Inverting Input 1
Non-inverting Input 1
CC
V
-
CC
V
1
2
3
4
8
5
6
7
9
10
11
12
13
14
+
Output 3
Output 4
Non-inverting Input 4
Inverting Input 4
Non-inverting Input 3
Inverting Input 3
-
+
-
+
-
+
-
+
Features
■ Push-pull CMOS output (no external pull-up
resistor required)
■ Extremely low supply current: 9μa typ per
comparator
■ Wide single supply range 2.7V to 16V or dual
supplies (±1.35V to ±8V)
■ Extremely low input bias current: 1pA typ
■ Extremely low input offset current: 1pA t yp
■ Input common-mode voltage range includes
GND
■ High input impedance: 10
■ Last response time: 2μs typ. for 5mV overdrive
■ Pin-to-pin and functionally compatible with
bipolar LM339
12
Ω typ
TS3704
N
DIP14
(Plastic package)
D
SO14
(Plastic micropackage)
P
TSSOP14
(Thin shrink small outline package)
Description
The TS3704 is a micropower CMOS qua d volta ge
comparator with extremely low consumption of
9μA typ / comparator (20 times less than bipolar
LM339). The push-pull CMOS output stage allows
power and space saving by eliminating the
external pull-up resistor required by usual opencollector output comparators.
Thus response times remain similar to the LM339.
Pin connections
(Top view )
February 2007 Rev 3 1/11
www.st.com
11
Schematic diagram TS3704
1 Schematic diagram
Figure 1. Schematic diagram (for 1/4 TS3704)
V+
CC
T
T
1
T
2
T
9
10
T
17
R
1
Input - Input +
TT
34
T
8
T
5
T
6
T
7
T
11
TT
14 15
T
12
T
13
T
16
V-
CC
TT
18 21
Output
TT
19 20
2/11
TS3704 Absolute maximum ratings
2 Absolute maximum ratings
Table 1. Absolute maximum ratings
Symbol Parameter Value Unit
V
CC
V
V
V
I
I
p
T
stg
ESD
+
Supply voltage
Differential input voltage
id
Input voltage
i
Output voltage 18 V
o
Output current 20 mA
o
Forward current in ESD protection diodes on input
F
Power dissipation
d
DIP14
SO14
TSSOP14
Storage temperature range -65 to +150 °C
HBM: human body model
MM: machine model
CDM: charged device model
(3)
(1)
(5)
(7)
(2)
(6)
(8)
(4)
18 V
±18 V
18 V
50 mA
1500
830
710
500 V
50 V
1.5 kV
mW
1. All voltage values, except differential voltage, are with respect to network ground terminal.
2. Differential voltages are the non-inverting input terminal with respect to the inverting input terminal.
3. The magnitude of the input and the output voltages must never exceed the magnitude of the positive and
negative supply voltages.
4. Guaranteed by design.
5. Pd is calculated with T
R
= 80°C/W for DIP14 package
thja
R
= 150°C/W for SO14 package
thja
R
= 175°C/W for TSSOP14 package
thja
6. Human body model: A 100pF capacitor is charged to the specified voltage, then discharged through a
1.5kΩ resistor between two pins of the device. This is done for all couples of connected pin combinations
while the other pins are floating.
7. Machine model: A 200pF capacitor is charged to the specified voltage, then discharged directly between
two pins of the device with no external series resistor (internal resistor < 5Ω). This is done for all couples of
connected pin combinations while the other pins are floating.
8. Charged device model: all pins and the package are charged together to the specified voltage and then
discharged directly to the ground through only one pin. This is done for all pins.
Table 2. Operating conditions
= +25°C, Tj = +150°C and
amb
Symbol Parameter Value Unit
Supply voltage
+
V
CC
V
icm
TS3704C, TS3704I
TS3704M
2.7 to 16
4 to 16
Common mode input voltage range 0 to V
+
-1.5 V
CC
Operating free-air temperature range
T
oper
TS3704C
TS3704I
TS3704M
0 to +70
-40 to +125
-55 to +125
V
°C
3/11
Electrical characteristics TS3704
3 Electrical characteristics
Table 3. V
CC
+
= 3V, V
CC
-
= 0V, T
= 25°C (unless otherwise specified)
amb
Symbol Parameter Min. Typ. Max. Unit
≤ T
≤ T
≤ T
≤ T
max
max
(2)
max
max
(2)
(1)
5
6.5
1
300
1
600
0
0
V
V
CC
CC
+
+
-1.5
-1.2
80 dB
V
io
I
io
I
ib
V
icm
CMR
SVR
Input offset voltage
Vic = 1.5V
T
≤ T
min
amb
Input offset current
Vic = 1.5V
≤ T
T
min
amb
Input bias current
Vic = 1.5V
T
≤ T
min
amb
Input common mode voltage range
≤ T
T
min
amb
Common-mode rejection ratio
V
= V
ic
icm min
Supply voltage rejection ratio
+
V
= 3V to 5V 75 dB
CC
High level output voltage
V
OH
Vid = 1V, IOH = -4mA
≤ T
T
min
amb
≤ T
max
2
1.8
2.4
Low level output voltage
V
OL
= -1V, IOL = 4mA
V
id
T
≤ T
amb
≤ T
min
max
300 400
575
Supply current (each comparator)
I
CC
No load - Outputs low
≤ T
T
min
amb
≤ T
max
720
25
Response time low to high
t
PLH
Vic = 0V, f = 10kHz, CL = 50pF, overdrive = 5mV
TTL input
1.2
0.7
Response time high to low
t
PHL
1. The specified offset voltage is the maximum value required to drive the output up to 2.5V or down to 0.3V.
2. Maximum values include unavoidable inaccuracies of the industrial tests.
= 0V, f = 10kHz, CL = 50pF, overdrive = 5mV
V
ic
TTL input
2
0.15
mV
pA
pA
V
V
mV
μA
μs
μs
4/11
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