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PDF G690H Data sheet ( Hoja de datos )
| Número de pieza | G690H | |
| Descripción | Microprocessor Reset IC | |
| Fabricantes | ETC | |
| Logotipo |  |
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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
1 page  
Global Mixed-mode Technology Inc.
G690/G691
Selector Guide
PART/SUFFIX RESET THRESHOLD (V)
G691L463Tx2
4.63
G691L438Tx2
4.38
G691L400Tx2
4.00
G691L308Tx2
3.08
G691L293Tx2
2.93
G691L263Tx2
2.63
G690H463Tx2
4.63
G690H438Tx2
4.38
G690H400Tx2
4.00
G690H308Tx2
3.08
G690H293Tx2
2.93
G690H263Tx2
2.63
G690L463Tx2
4.63
G690L438Tx2
4.38
G690L400Tx2
4.00
G690L308Tx2
3.08
G690L293Tx2
2.93
G690L263Tx2
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
687Fx
687Ex
687Dx
687Cx
687Bx
687Ax
686Lx
686Kx
686Jx
686Ix
686Hx
686Gx
686Fx
686Ex
686Dx
686Cx
686Bx
686Ax
TOP MARK
SOT 23
687Fx
687Ex
687Dx
687Cx
687Bx
687Ax
686Lx
686Kx
686Jx
686Ix
686Hx
686Gx
686Fx
686Ex
686Dx
686Cx
686Bx
686Ax
SC70
687Fx
687Ex
687Dx
687Cx
687Bx
687Ax
686Lx
686Kx
686Jx
686Ix
686Hx
686Gx
686Fx
686Ex
686Dx
686Cx
686Bx
686Ax
Selector Guide
PART/SUFFIX RESET THRESHOLD (V)
G691L463Tx3
4.63
G691L438Tx3
4.38
G691L400Tx3
4.00
G691L308Tx3
3.08
G691L293Tx3
2.93
G691L263Tx3
2.63
G690H463Tx3
4.63
G690H438Tx3
4.38
G690H400Tx3
4.00
G690H308Tx3
3.08
G690H293Tx3
2.93
G690H263Tx3
2.63
G690L463Tx3
4.63
G690L438Tx3
4.38
G690L400Tx3
4.00
G690L308Tx3
3.08
G690L293Tx3
2.93
G690L263Tx3
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
691Fx
691Ex
691Dx
691Cx
691Bx
691Ax
690Lx
690Kx
690Jx
690Ix
690Hx
690Gx
690Fx
690Ex
690Dx
690Cx
690Bx
690Ax
TOP MARK
SOT 23
691Fx
691Ex
691Dx
691Cx
691Bx
691Ax
690Lx
690Kx
690Jx
690Ix
690Hx
690Gx
690Fx
690Ex
690Dx
690Cx
690Bx
690Ax
SC70
691Fx
691Ex
691Dx
691Cx
691Bx
691Ax
690Lx
690Kx
690Jx
690Ix
690Hx
690Gx
690Fx
690Ex
690Dx
690Cx
690Bx
690Ax
Ver: 1.3
Oct 31, 2002
TEL: 886-3-5788833
http://www.gmt.com.tw
5
5 Page 
Global Mixed-mode Technology Inc.
D
EH
G690/G691
C
L
e
θ1
A2
b
A
A1
SOT 23 (T7) Package
Note:
1.Package body sizes exclude mold flash protrusions or gate burrs
2.Tolerance ±0.1000 mm (4mil) unless otherwise specified
3.Coplanarity: 0.1000mm
4.Dimension L is measured in gage plane
SYMBOLS
A
A1
A2
b
C
D
E
e
H
L
θ1
MIN
1.00
0.00
0.70
0.35
0.10
2.70
1.40
-----
2.60
0.37
1º
DIMENSIONS IN MILLIMETERS
NOM
1.10
-----
0.80
0.40
0.15
2.90
1.60
1.90(TYP)
2.80
------
5º
MAX
1.30
0.10
0.90
0.50
0.25
3.10
1.80
-----
3.00
-----
9º
Ver: 1.3
Oct 31, 2002
TEL: 886-3-5788833
http://www.gmt.com.tw
11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet G690H.PDF ] | |
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