Global Mixed-mode Technology Inc.
G696/G697
Microprocessor Reset IC
Features
Precision Monitoring of +3V, +3.3V, and +5V
Power-Supply Voltages
General Description
The G696/G697 are microprocessor (µP) supervisory
circuits used to monitor the power supplies in µP and
digital systems. They provide excellent circuit reliability
and low cost and adjustments when used with +5V,
+3.3V, +3.0V- powered circuits.
These circuits perform a single function: they assert a
reset signal whenever the V
CC
supply voltage declines
below a preset threshold, with hysteresis keeping it
asserted for time delay determined by externally pro-
gramable time delay generator. after V
CC
has risen
above the reset threshold. Reset thresholds suitable
for operation with a variety of supply voltages are
available.
The G697L has an open-drain output stage, while the
G696 have push-pull outputs. The G697L’s open-drain
RESET output requires a pull-up resistor that can be
connected to a voltage higher than V
CC
. The G696L
have an active-low RESET output, while the G696H
has an active-high RESET output. The reset com-
parator is designed to ignore fast transients on V
CC
,
and the outputs are guaranteed to be in the correct
logic state for V
CC
down to 0.8V.
Low supply current makes the G696/G697 ideal for
use in portable equipment. The G696/G697 are avail-
able in 5-pin SOT23-5 packages.
Fully Specified Over Temperature
Available in Three Output Configurations
Push-Pull RESET Output (G696L)
Push-Pull RESET Output (G696H)
Open-Drain RESET Output (G697L)
Externally Programmable Time Delay Generator
6µA Supply Current
Guaranteed Reset Valid to V
CC
= 0.8V
Power Supply Transient Immunity
5 pin SOT23-5 Packages
Applications
Computers
Controllers
Intelligent Instruments
Critical µP and µC Power Monitoring
Portable / Battery-Powered Equipment
Automotive
Ordering Information
PART
TEMP. RANGE
PIN-PACKAGE
SOT23-5
SOT23-5
G696H(L)xxxT1 -40°C ~ +105°C
G697LxxxT1
-40°C ~ +105°C
* xxx specifies the threshold voltage.
e.g. 263 denotes the 2.63V threshold voltage.
Pin Configuration
Typical Operating Circuit
V
CC
RESET(RESET)
1
5
C
D
V
CC
R
pull-up*
V
CC
V
CC
2
G696/G697
G696/G697
C
D
RESET
(RESET)
GND
C
D
µP
RESET
INPUT
GND
GND
3
4
SOT23-5
N.C.
()is for G696H
*G697 ONLY
Ver: 1.1
Jul 26, 2002
TEL: 886-3-5788833
http://www.gmt.com.tw
1
Global Mixed-mode Technology Inc.
Absolute Maximum Ratings
Terminal Voltage (with respect to GND)
V
CC
.……………………………..…….…….-0.3V to +6.0V
Delay Capacitor Pin Voltage, V
CD
…..-0.3 to (V
CC
+0.3V)
RESET, RESET (push-pull)....…....-0.3V to (V
CC
+ 0.3V)
RESET (open drain)...…......…................-0.3V to +6.0V
Input Current, V
CC
............................…..…............20mA
Output Current, RESET, RESET ......…...............20mA
G696/G697
Continuous Power Dissipation (T
A
= +70°C)
5-Pin SOT23-5 (derate 2.17mW/°C above +70°C).174mW
Operating Temperature Range …...…..-40°C to +105°C
Storage Temperature Range..….…......-65°C to +150°C
Lead Temperature (soldering, 10s)...…...….…...+300°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause p’ermanent damage to the device. These are stress rat-
ings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of
the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
Electrical Characteristics
(V
CC
= full range, T
A
= -40°C to +105°C, unless otherwise noted. Typical values are at T
A
= +25°C, V
CC
= 5V
for 463/438/400 versions, V
CC
= 3.3V for 308/293 versions, and V
CC
= 3V for 263 version.) (Note 1)
PARAMETER
V
CC
Range
Supply Current (SOT23-5)
I
CC
SYMBOL
CONDITION
T
A
= 0°C +70°C
T
A
= -40°C +105°C
V
CC
<5.5V, G69_ _463/438/400/330_
V
CC
<3.6V, G69_ _308/293/263_
G69_ _463_
G69_ _438_
G69_ _400_
G69_ _330_
G69_ _308_
G69_ _293_
G69_ _263_
G69__463_
G69__438_
G69__400_
G69__330_
G69__308_
G69__293_
G69__263_
V
CC
= 5V G69_ _ 463/438/400/330__
V
CC
=3.3V G69_ _308/293
V
CC
=3.0V G69_ 263_
V
CC
= 1.5V, V
CD
= 0.5V
MIN
0.8
1
TYP MAX UNITS
5.5
5.5
10
8.5
4.722
4.467
4.08
3.366
3.141
2.988
2.682
324
306
280
231
215
205
184
3.9
2.7
2.6
2.3
V
µA
Reset Threshold
V
TH-
Reset Threshold Hystersis
V
HYS
4.537
4.293
3.92
3.234
3.019
2.872
2.578
139
132
120
99
93
88
79
3
1.9
1.8
3
1
Reset Threshold Tempco
C
D
Delay Pin Threshold Voltage
Delay Capacitor Pin Sink Current
Delay Pull up Resistance
V
TDC
I
CD
R
D
6
5
4.63
4.38
4
3.30
3.08
2.93
2.63
231
219
200
165
154
146
131
70
3.3
2.3
2.2
5
1.5
V
mV
ppm/°C
V
mA
MΩ
Ver: 1.1
Jul 26, 2002
TEL: 886-3-5788833
http://www.gmt.com.tw
2
Global Mixed-mode Technology Inc.
Electrical Characteristics
(Continued)
G696/G697
MIN
8
4.5
3
2
16
12
10
2
1
mA
µA
mA
mA
(V
CC
= full range, T
A
= -40°C to +105°C, unless otherwise noted. Typical values are at T
A
= +25°C, V
CC
= 5V
for 463/438/400/330 versions, V
CC
= 3.3V for 308/293 versions, and V
CC
= 3V for 263 version.) (Note 1)
PARAMETER
RESET
Output Current Low (push-pull active low,
and open-drain active-low, G696L and G697L)
SYMBOL
I
OL
CONDITION
V
CC
= 2.5V, V
RESET
= 0.5V
V
CC
= 5V, V
RESET
= 4.5V,
G696L463/438/400/330
V
CC
= 3.3V, V
RESET
= 2.8V,
G696L308/293
V
CC
= 3V, V
RESET
= 2.5V,
G696L263
V
CC
= 5V, V
RESET
= 0.5V,
G696H463/438/400/330
V
CC
= 3.3V, V
RESET
= 0.5V,
G696H308/293
V
CC
= 3V, V
RESET
= 0.5V,
G696H263
V
CC
= 2.5V, V
RESET
= 2V
V
CC
> V
TH
,
RESET
deasserted
TYP MAX UNITS
mA
RESET
Output Current High (push-pull active
low, G696L)
I
OH
RESET Output Current Low (push-pull active
high, G696H)
I
OL
RESET Output Current High (push-pull active
high, G696H)
RESET
Open-Drain Output Leakage Current
(G697L)
I
OH
Note 1: Production testing done at T
A
= +25°C; limits over temperature guaranteed by design.
Selector Guide
PART/SUFFIX
G697L463T_
G697L438T_
G697L400T_
G697L330T_
G697L308T_
G697L293T_
G697L263T_
G696H463T_
G696H438T_
G696H400T_
G696H330T_
G696H308T_
G696H293T_
G696H263T_
G696L463T_
G696L438T_
G696L400T_
G696L330T_
G696L308T_
G696L293T_
G696L263T_
RESET THRESHOLD (V)
4.63
4.38
4.00
3.30
3.08
2.93
2.63
4.63
4.38
4.00
3.30
3.08
2.93
2.63
4.63
4.38
4.00
3.30
3.08
2.93
2.63
OUTPUT TYPE
Open-Drain
RESET
Open-Drain
RESET
Open-Drain
RESET
Open-Drain
RESET
Open-Drain
RESET
Open-Drain
RESET
Open-Drain
RESET
Push-Pull RESET
Push-Pull RESET
Push-Pull RESET
Push-Pull RESET
Push-Pull RESET
Push-Pull RESET
Push-Pull RESET
Push-Pull
RESET
Push-Pull
RESET
Push-Pull
RESET
Push-Pull
RESET
Push-Pull
RESET
Push-Pull
RESET
Push-Pull
RESET
TOP MARK
697Gx
697Fx
697Ex
697Dx
697Cx
697Bx
697Ax
696Lx
696Kx
696Jx
696Nx
696Ix
696Hx
696Gx
696Fx
696Ex
696Dx
696Mx
696Cx
696Bx
696Ax
Ver: 1.1
Jul 26, 2002
TEL: 886-3-5788833
http://www.gmt.com.tw
3
Global Mixed-mode Technology Inc.
Typical Operating Characteristics
G696/G697
(V
CC
= full range, T
A
= -40°C to +105°C, unless otherwise noted. Typical values are at T
A
= +25°C, V
CC
= 5V
for 463/438/400/330 versions, V
CC
= 3.3V for 308/293 versions, and V
CC
= 3V for 263 version.)
Supply Current vs. V
CC
8
7
6
Supply Curremt vs. Temperature (No Load)
7
6
Supply Current (uA)
5
4
3
2
1
0
V
CC
=5V
V
CC
=3.3V
Supply Current (u A)
5
4
3
2
1
0
0
0.6 1
1.2 1.5 1.8 2.1 2.4 2.7
3
3.2 3.3 3.4 3.5 3.7 3.9
4
4.5
5
5.5
6
V
CC
=2.5
-40
-20
0
20
40
60
80
V
CC
(V)
Temperature (°C)
Normalized Reset Threshold vs. Temperature
1.06
Normalized Ormalized V
TH+
, V
TH-
(V)
1.05
1.04
1.03
1.02
1.01
1
0.99
0.98
0.97
0.96
-40 -30 -20 -10
0
10 20 27 30
40 50 60 70 80 90
0.1
0.0001
Output Time Delay vs. Capacitance
10000
V
T
Output Time Delay
1000
Delay between V
CC
>V
TH
to output change (ms)
100
V
TH
10
Delay between V
CC
<V
TH
to
output change (us)
1
0.001
0.01
0.1
1
T
A
, Ambient Temperature (°C)
CD, Delay Pin Capacitance (uF)
C
D
Delay Pin Sink Current vs. Voltage
40
I
CD
, C
D
DELAY PIN SINK CURRENT (mA)
Delay Resistance vs. Temperature
1.75
35
30
25
20
15
10
5
0
0.05
0.2
0.4
0.6
V
CC
=3V
RD, Delay Resistance (M
Ω
)
2.4
3
1.7
1.65
1.6
1.55
1.5
1.45
1.4
1.35
1.3
V
CC
=2.5
V
CC
=1.5V
1.2
1.8
-40
-30
-20
-10
0
10
20
30
40
50
60
70
80
90
V
CD
, Delay Pin Voltage (V)
T
A
, Ambient Temperature (°C)
Reset Output Time Delay vs. Temperature
300
250
Output Time Delay (ms)
200
150
100
50
0
-40
-30
-20
-10
0
10
20
30
40
50
60
70
80
90
CD=0.1u F
T
A
, Ambient Temperature (°C)
Ver: 1.1
Jul 26, 2002
TEL: 886-3-5788833
http://www.gmt.com.tw
4
Global Mixed-mode Technology Inc.
Timing Diagram
G696/G697
V
CC
, Pin 2
V
CC
V
TH +
V
TH -
V
CC
C
D
, Pin 5
0.675 V
IN
V
CC
Reset Output
(Active Low), Pin 1
V
TH
-
0V
V
CC
Reset Output
(Active High), Pin 1
V
TH
-
0V
t
D2
Figure 1
Functional Diagram
2 V
CC
2 V
CC
1 RESET
R
D
+
1
R
D
RESET
(RESET)
+
V
TH
*
V
TH
3 GND 5 C
D
() is for G696H
3 GND 5 C
D
Figure 2
Ver: 1.1
Jul 26, 2002
TEL: 886-3-5788833
http://www.gmt.com.tw
5
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