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參數(shù)資料
| 型號(hào)： | G670 |
| 廠商： | Global Mixed-mode Technology Inc. |
| 元件分類： | 復(fù)位半導(dǎo)體 |
| 英文描述： | Microprocessor Reset IC |
| 中文描述： | 微處理器復(fù)位IC |
| 文件頁(yè)數(shù)： | 1/13頁(yè) |
| 文件大小： | 193K |
| 代理商： | G670 |
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Ver: 1.5
Dec 03, 2005
TEL: 886-3-5788833
http://www.gmt.com.tw
1
G670/G671
Global Mixed-mode Technology Inc.
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
14A 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 P and C Power Monitoring
Portable / Battery-Powered Equipment
Automotive
General Description
The G670/G671 are microprocessor (P) supervisory
circuits used to monitor the power supplies in P 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
RESET
INPUT
GND
P
VCC
RESET
(RESET)
GND
G670/G671
VCC
R
PULL-UP
V
CC
*
*G671 only
SOT-23
1
2
3
Top View
1
2
3
Top View
1
2
3
SOT-89
TO-92
13
2
Top
View
RESET
INPUT
GND
P
VCC
RESET
(RESET)
GND
G670/G671
VCC
R
PULL-UP
V
CC
*
*G671 only
SOT-23
1
2
3
Top View
1
2
3
Top View
1
2
3
SOT-89
TO-92
13
2
Top
View
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