Global Mixed-mode Technology Inc.
G698/G699
Microprocessor Reset IC
Features
Precision Monitoring of +3V, +3.3V, and +5V
Power-Supply Voltages
General Description
The G698/G699 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-
grammable 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 G699L has an open-drain output stage, while the
G698 have push-pull outputs. The G699L’s open-drain
RESET output requires a pull-up resistor that can be
connected to a voltage higher than V
CC
. The G698L
have an active-low RESET output, while the G698H
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 G698/G699 ideal for
use in portable equipment. The G698/G699 are avail-
able in 5-pin SOT23-5 packages.
Fully Specified Over Temperature
Available in Three Output Configurations
Push-Pull RESET Output (G698L)
Push-Pull RESET Output (G698H)
Open-Drain RESET Output (G699L)
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
ORDER NUMBER TEMP. RANGE
G698H(L)xxxT1U
G699LxxxT1U
-40°C ~ +105°C
-40°C ~ +105°C
PACKAGE
SOT23-5
SOT23-5
Note:
T1 : SOT23-5
U : Tape & Reel
* xxx specifies the threshold voltage.
e.g. 263 denotes the 2.63V threshold voltage.
Pin Configuration
Typical Application Circuit
V
CC
CD
1
5
VCC
VCC
R
pull-up*
VCC
GND
2
G698/G699
G698/G699
CD
RESET
(RESET)
GND
C
D
µP
RESET
INPUT
GND
GND
3
SOT23-5
4
RESET
(RESET)
()is for G698H
*G699 ONLY
Ver: 1.1
Sep 30, 2003
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
G698/G699
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).….….………+260°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
-
-
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
TYP MAX
-
-
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
UNIT
Reset Threshold
V
TH-
Reset Threshold Hystersis
V
HYS
Reset Threshold Tempco
C
D
Delay Pin Threshold Voltage
Delay Capacitor Pin Sink Current
Delay Pull up Resistance
V
TDC
I
CD
R
D
5.5
V
5.5
10
µA
8.5
4.722
4.467
4.08
V
3.366
3.141
2.988
2.7
324
306
280
mV
231
215
205
184
-
ppm/°C
3.9
V
2.7
2.6
-
mA
2.3
MΩ
Ver: 1.1
Sep 30, 2003
TEL: 886-3-5788833
http://www.gmt.com.tw
2
Global Mixed-mode Technology Inc.
Electrical Characteristics
(Continued)
G698/G699
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, G698L and G699L)
SYMBOL
I
OL
CONDITION
V
CC
= 2.5V, V
RESET
= 0.5V
V
CC
= 5V, V
RESET
= 4.5V,
G698L463/438/400/330
V
CC
= 3.3V, V
RESET
= 2.8V,
G698L308/293
V
CC
= 3V, V
RESET
= 2.5V,
G698L263
V
CC
= 5V, V
RESET
= 0.5V,
G698H463/438/400/330
V
CC
= 3.3V, V
RESET
= 0.5V,
G698H308/293
V
CC
= 3V, V
RESET
= 0.5V,
G698H263
V
CC
= 2.5V, V
RESET
= 2V
V
CC
> V
TH
,
RESET
deasserted
TYP MAX UNIT
mA
RESET
Output Current High (push-pull active
low, G698L)
I
OH
RESET Output Current Low (push-pull active
high, G698H)
I
OL
RESET Output Current High (push-pull active
high, G698H)
RESET
Open-Drain Output Leakage Current
(G699L)
I
OH
Note 1: Production testing done at T
A
= +25°C; limits over temperature guaranteed by design.
Selector Guide
PART/SUFFIX
G699L463T1U
G699L438T1U
G699L400T1U
G699L330T1U
G699L308T1U
G699L293T1U
G699L263T1U
G698H463T1U
G698H438T1U
G698H400T1U
G698H330T1U
G698H308T1U
G698H293T1U
G698H263T1U
G698L463T1U
G698L438T1U
G698L400T1U
G698L330T1U
G698L308T1U
G698L293T1U
G698L263T1U
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
699Gx
699Fx
699Ex
699Dx
699Cx
699Bx
699Ax
698Lx
698Kx
698Jx
698Nx
698Ix
698Hx
698Gx
698Fx
698Ex
698Dx
698Mx
698Cx
698Bx
698Ax
Ver: 1.1
Sep 30, 2003
TEL: 886-3-5788833
http://www.gmt.com.tw
3
Global Mixed-mode Technology Inc.
Typical Operating Characteristics
G698/G699
(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 Curremt vs. Temperature (No Load)
7
V
CC
=5V
7
6
Supply Current vs. V
CC
8
6
Supply Current (µA)
5
4
V
CC
=2.5V
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
=3.3V
Supply Current (µA)
5
4
3
2
1
0
-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
Output Time Delay vs. Capacitance
10000
V
T
1000
Delay between V
CC
>V
TH
to output change (ms)
Output Time Delay
100
V
TH
10
1
Delay between V
CC
<V
TH
to output change (µs)
0.1
0.0001
0.001
0.01
0.1
1
T
A
, Ambient Temperature (°C)
C
D
, Delay Pin Capacitance (µF)
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
V
CC
=3V
1.7
1.65
RD, Delay Resistance (M
Ω
)
V
CC
=2.5V
1.6
1.55
1.5
1.45
1.4
1.35
1.3
V
CC
=1.5V
0.6
1.2
1.8
2.4
3
-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
C
D
=0.1µF
150
100
50
0
-40
-30
-20
-10
0
10
20
30
40
50
60
70
80
90
T
A
, Ambient Temperature (°C)
Ver: 1.1
Sep 30, 2003
TEL: 886-3-5788833
http://www.gmt.com.tw
4
Global Mixed-mode Technology Inc.
Timing Diagram
V
CC
V
TH+
V
TH-
G698/G699
V
CC
, Pin 5
V
CC
C
D
, Pin 1
0.675 V
IN
V
CC
Reset Output
(Active Low), Pin 4
V
TH
-
0V
V
CC
Reset Output
(Active High), Pin 4
V
TH
-
0V
t
D2
Figure 1
Functional Diagram
5
V
CC
5
V
CC
4
RESET
R
D
+
4
R
D
RESET
(RESET)
+
V
TH
*
V
TH
2
() is for G698H
GND 1
C
D
2
GND 1
C
D
Figure 2
Ver: 1.1
Sep 30, 2003
TEL: 886-3-5788833
http://www.gmt.com.tw
5
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