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G670 Datasheet Preview

G670 Datasheet

(G670 / G671) Microprocessor Reset IC

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Global Mixed-mode Technology Inc.
G670/G671
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 (G670L)
Push-Pull RESET Output (G670H)
Open-Drain RESET Output (G671L)
„ 2ms max Power-On Reset Pulse Width
„ 14µA Supply Current
„ Guaranteed Reset Valid to VCC = +1V
„ Power Supply Transient Immunity
„ No External Components
„ 3-Pin SOT-23,TO-92 and SOT-89 Packages
„ 2% Threshold Accuracy
Applications
„ Computers
„ Controllers
„ Intelligent Instruments
„ Critical µP and µC Power Monitoring
„ Portable / Battery-Powered Equipment
„ Automotive
General Description
The G670/G671 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. Reset thresholds suitable for
operation with a variety of supply voltages are avail-
able.
The G671L has an open-drain output stage, while the
G670 have push-pull outputs. The G671L’s open-drain
RESET output requires a pull-up resistor that can be
connected to a voltage higher than VCC. The G670L
have an active-low RESET output, while the G670H
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 G670/G671 ideal for
use in portable equipment. The G670/G671 are avail-
able in 3-pin SOT-23, TO-92 and SOT-89 packages.
Pin Configuration
Typical Application Circuit
3
12
SOT-23
TTooppVVieieww
12 3
SOT-89
Top
View
123
TO-92
VCC
VCC
G670/G671
RESET
(RESET)
GND
VCC
*RPULL-UP
µP
RESET
INPUT
GND
*G671 only
Ver: 1.5
Dec 03, 2005
TEL: 886-3-5788833
http://www.gmt.com.tw
1




GMT

G670 Datasheet Preview

G670 Datasheet

(G670 / G671) Microprocessor Reset IC

No Preview Available !

Global Mixed-mode Technology Inc.
Ordering Information
ORDER NUMBER
G670LxxxTDxB
G670HxxxTDxB
G671LxxxTDxB
G670LxxxT2xU
G670HxxxT2xU
G671LxxxT2xU
G670LxxxT7xU
G670HxxxT7xU
G671LxxxT7xU
Note: U : Tape & Reel B: Bag
ORDER NUMBER
(Pb free)
G670LxxxTDxBf
G670HxxxTDxBf
G671LxxxTDxBf
G670LxxxT2xUf
G670HxxxT2xUf
G671LxxxT2xUf
G670LxxxT7xUf
G670HxxxT7xUf
G671LxxxT7xUf
TEMP. RANGE
-40°C ~ +105°C
-40°C ~ +105°C
-40°C ~ +105°C
-40°C ~ +105°C
-40°C ~ +105°C
-40°C ~ +105°C
-40°C ~ +105°C
-40°C ~ +105°C
-40°C ~ +105°C
G670/G671
OUTPUT TYPE
Push-Pull Active Low
Push-Pull Active High
Open-Drain
Push-Pull Active Low
Push-Pull Active High
Open-Drain
Push-Pull Active Low
Push-Pull Active High
Open-Drain
Order Number Identification
G67XX XXX XX X
Pin Option
Package Type
Threshold Voltage Option
Part Number
PART NUMBER
G670L : Push-Pull Active Low Output
G670H : Push-Pull Active High Output
G671L : Open-Drain Output
THRESHOLD VOLTAGE OPTION
* xxx specifies the threshold voltage.
e.g. 263 denotes the 2.64V threshold voltage.
PACKAGE TYPE
TD : TO-92
T2 : SOT-89
T7 : SOT-23
PIN OPTION
1
1 : RESET
2 : RESET
3 : GND
4 : GND
5 : VCC
6 : VCC
2
GND
VCC
RESET
VCC
GND
RESET
*RESET for G670H
3
VCC
GND
VCC
RESET
RESET
GND
Ver: 1.5
Dec 03, 2005
TEL: 886-3-5788833
http://www.gmt.com.tw
2


Part Number G670
Description (G670 / G671) Microprocessor Reset IC
Maker GMT
Total Page 13 Pages
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