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G671L463T25UF 参数 Datasheet PDF下载

G671L463T25UF图片预览
型号: G671L463T25UF
PDF下载: 下载PDF文件 查看货源
内容描述: 微处理器复位IC [Microprocessor Reset IC]
分类和应用: 微处理器
文件页数/大小: 13 页 / 185 K
品牌: GMT [ GLOBAL MIXED-MODE TECHNOLOGY INC ]
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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
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 V
CC
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 V
CC
. 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 V
CC
,
and the outputs are guaranteed to be in the correct
logic state for V
CC
down to 1V.
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 V
CC
= +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
µ
P and µC Power Monitoring
Portable / Battery-Powered Equipment
Automotive
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
V
CC
3
VCC
VCC
R
PULL-UP
*
Top View
Top View
Top
View
G670/G671
RESET
(RESET)
µP
RESET
INPUT
GND
1
2
1
2
3
GND
1
2
3
SOT-23
SOT-89
TO-92
*G671 only
Ver: 1.5
Dec 03, 2005
TEL: 886-3-5788833
http://www.gmt.com.tw
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