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부품번호 | G691L 기능 |
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기능 | Microprocessor Reset IC | ||
제조업체 | ETC | ||
로고 | |||
전체 12 페이지수
Global Mixed-mode Technology Inc.
G690/G691
Microprocessor Reset IC
Features
Precision Monitoring of +3V, +3.3V, and +5V
Power-Supply Voltages
Fully Specified Over Temperature
Available in Three Output Configurations
Push-Pull RESET Output (G690L)
Push-Pull RESET Output (G690H)
Open-Drain RESET Output (G691L)
140ms min Power-On Reset Pulse Width
10µA Supply Current
Guaranteed Reset Valid to VCC = +1V
Power Supply Transient Immunity
No External Components
3-Pin SOT89, SOT23 and SC70 Packages
Applications
Computers
Controllers
Intelligent Instruments
Critical µP and µC Power Monitoring
Portable / Battery-Powered Equipment
Automotive
General Description
The G690/G691 are microprocessor (µP) supervisory
circuits used to monitor the power supplies in µP and
digital systems. They provide excellent circuit reliability
and low cost by eliminating external components and
adjustments when used with +5V, +3.3V, +3.0V- pow-
ered circuits.
These circuits perform a single function: they assert a
reset signal whenever the VCC supply voltage declines
below a preset threshold, keeping it asserted for at
least 140ms after VCC has risen above the reset
threshold. Reset thresholds suitable for operation with
a variety of supply voltages are available.
The G691L has an open-drain output stage, while the
G690 have push-pull outputs. The G691L’s open-drain
RESET output requires a pull-up resistor that can be
connected to a voltage higher than VCC. The G690L
have an active-low RESET output, while the G690H
has an active-high RESET output. The reset com-
parator is designed to ignore fast transients on VCC,
and the outputs are guaranteed to be in the correct
logic state for VCC down to 1V.
Low supply current makes the G690/G691 ideal for
use in portable equipment. The G690/G691 are avail-
able in 3-pin SOT89 or SOT23 or SC70 packages.
Pin Configuration
3
1 23
SOT 89
12
SOT23/SC70
Typical Application
VCC
VCC
G690/G691
RESET
(RESET)
GND
VCC
*RPULL-UP
µP
RESET
INPUT
GND
*G691 ONLY
Ver: 1.3
Oct 31, 2002
TEL: 886-3-5788833
http://www.gmt.com.tw
1
Global Mixed-mode Technology Inc.
G690/G691
Electrical Characteristics (Continued)
(VCC = full range, TA = -40°C to +105°C, unless otherwise noted. Typical values are at TA = +25°C, VCC = 5V
for 463/438/400 versions, VCC= 3.3V for 308/293 versions, and VCC = 3V for 263 version.) (Note 1)
PARAMETER
SYMBOL
CONDITION
MIN
Reset Threshold Tempco
VCC to Reset Delay (Note 2)
Reset Active Timeout Period
VCC = VTH to (VTH – 100mV)
VCC = VTH max,
G69_ _ 463/438/400
VCC = VTH max,
G69_ _308/293/263
280
140
RESET Output Current Low (push-pull active low,
and open-drain active-low, G690L and G691L)
IOL
VCC = 2.5V, V RESET = 0.5V
VCC = 5V, V RESET = 4.5V,
G690L463/438/400
RESET Output Current High (push-pull active
low, G690L)
IOH
VCC = 3.3V, V RESET = 2.8V,
G690L308/293
VCC = 3V, V RESET = 2.5V,
G690L263
VCC = 5V, VRESET = 0.5V,
G690H463/438/400
RESET Output Current Low (push-pull active
high, G690H)
IOL
VCC = 3.3V, VRESET = 0.5V,
G690H308/293
VCC = 3V, VRESET = 0.5V,
G690H263
RESET Output Current High (push-pull active
high, G690H)
IOH VCC = 2.5V, VRESET = 2V
8
4.5
3
2
16
12
10
2
RESET Open-Drain Output Leakage Current
(G691L)
VCC > VTH, RESET deasserted
Note 1: Production testing done at TA = +25°C; limits over temperature guaranteed by design.
Note 2: RESET output is for G690L/G691L; While RESET output is for G690H.
TYP
40
7
MAX UNITS
ppm/°C
µs
640
ms
550
mA
mA
mA
mA
1 µA
Selector Guide
PART/SUFFIX RESET THRESHOLD (V)
G691L463Tx1
4.63
G691L438Tx1
4.38
G691L400Tx1
4.00
G691L308Tx1
3.08
G691L293Tx1
2.93
G691L263Tx1
2.63
G690H463Tx1
4.63
G690H438Tx1
4.38
G690H400Tx1
4.00
G690H308Tx1
3.08
G690H293Tx1
2.93
G690H263Tx1
2.63
G690L463Tx1
4.63
G690L438Tx1
4.38
G690L400Tx1
4.00
G690L308Tx1
3.08
G690L293Tx1
2.93
G690L263Tx1
2.63
Note: T2: SOT89; T7: SOT23; T9: SC70
OUTPUT TYPE
Open-Drain
Open-Drain
Open-Drain
Open-Drain
Open-Drain
Open-Drain
Push-Pull RESET
Push-Pull RESET
Push-Pull RESET
Push-Pull RESET
Push-Pull RESET
Push-Pull RESET
Push-Pull
Push-Pull
Push-Pull
Push-Pull
Push-Pull
Push-Pull
SOT 89
689Fx
689Ex
689Dx
689Cx
689Bx
689Ax
688Lx
688Kx
688Jx
688Ix
688Hx
688Gx
688Fx
688Ex
688Dx
688Cx
688Bx
688Ax
TOP MARK
SOT 23
689Fx
689Ex
689Dx
689Cx
689Bx
689Ax
688Lx
688Kx
688Jx
688Ix
688Hx
688Gx
688Fx
688Ex
688Dx
688Cx
688Bx
688Ax
SC70
689Fx
689Ex
689Dx
689Cx
689Bx
689Ax
688Lx
688Kx
688Jx
688Ix
688Hx
688Gx
688Fx
688Ex
688Dx
688Cx
688Bx
688Ax
Ver: 1.3
Oct 31, 2002
TEL: 886-3-5788833
http://www.gmt.com.tw
4
4페이지 Global Mixed-mode Technology Inc.
G690/G691
Typical Operating Characteristics
(VCC = full range, TA = -40°C to +105°C, unless otherwise noted. Typical values are at TA = +25°C, VCC = 5V
for 463/438/400 versions, VCC= 3.3V for 308/293 versions, and VCC = 3V for 263 version.)
Supply Current vs.Temperature
(No Load)
20
15 G69_ _ 463/438/400, Vcc=5V
10 G69_ _ 308/293/263, Vcc=3.3V
5 G69_ _ 463/438/400/308/293/263, Vcc=1V
0
-40
-20
0 20 40 60
Temperature (°C)
80
Power-up Reset Timeout
vs. Temperature
600
500 G69_ _ 463/438/400
400
300
G69_ _ 308/293/263
200
100
0
-40
-20
0 20 40
Temperature (°C)
60
80
Power-down Reset Delay vs.
Temperature (G69_ _308/293/263)
70
VOD = VTH - VCC
60
50
VOD = 10mV
40
VOD = 20mV
30
20
10
0
-40
-20
VOD = 100mV
VOD = 200mV
0 20 40
Temperature (°C)
60
80
Normalized Reset Threshold
vs. Temperature
1.002
1
0.998
0.996
0.994
0.992
0.99
0.988
-40
-20
0 20 40
Temperature (°C)
60
80
Power-down Reset Delay vs.
Temperature (G69_ _463/438/400)
140
VOD = VTH - VCC
120
100 VOD = 10mV
80
VOD = 20mV
60
40
20 VOD = 100mV
0
-40
-20
0 20 40
Temperature (°C)
60
80
Ver: 1.3
Oct 31, 2002
TEL: 886-3-5788833
http://www.gmt.com.tw
7
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부품번호 | 상세설명 및 기능 | 제조사 |
G691L | Microprocessor Reset IC | ETC |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |