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부품번호 | G681 기능 |
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기능 | Microprocessor Reset IC | ||
제조업체 | Global Mixed-mode Technology | ||
로고 | |||
전체 7 페이지수
Global Mixed-mode Technology Inc.
G680/G681
Microprocessor Reset IC
Features
High ±2% Voltage Threshold Accuracy
Independently Adjustable High- and Low-
Voltage Thresholds
Fully Specified Over Temperature
Available in Three Output Configurations
Push-Pull RESET Output (G680L)
Push-Pull RESET Output (G680H)
Open-Drain RESET Output (G681L)
140ms min Power-On Reset Pulse Width
4µA Supply Current
Power Supply Transient Immunity
5-Pin SOT23-5 Packages
Applications
Computers
Controllers
Intelligent Instruments
Critical µP and µC Power Monitoring
Portable / Battery-Powered Equipment
Automotive
General Description
The G680/G681 are microprocessor (µP) supervisory
circuits used to monitor the power supplies in µP and
digital systems. High- and Low- voltage thresholds can
be adjusted independently, allowing for wide hystere-
sis. Voltage detection thresholds are accurate to 2%.
These circuits perform a single function: they assert a
reset signal whenever the VCC supply voltage declines
below the low-voltage threshold, keeping it asserted
for at least 140ms after VCC has risen above the
high-voltage threshold.
The G681L has an open-drain output stage, while the
G680 have push-pull outputs. The G681L’s open-drain
RESET output requires a pull-up resistor that can be
connected to a voltage higher than VCC. The G680L
have an active-low RESET output, while the G680H
has an active-high RESET output. The reset com-
parator is designed to ignore fast transients on thresh-
old input.
The IC’s power supply is separate from the detector
inputs, allowing the G680/G681 to be powered from a
down-stream supply. Low supply current (4µA, typical)
makes the G680/G681 ideal for use in portable
equipment. The G680/G681 are available in 5 pin SOT
23-5 packages.
Ordering Information
PART
G680H(L)T1
G681LT1
TEMP. RANGE
-40°C ~ +105°C
-40°C ~ +105°C
PIN-PACKAGE
SOT23-5
SOT23-5
Pin Configuration
Typical Operating Circuit
HTH 1
5 Vcc
GND 2 G680/G681
LTH 3
4 RESET(RESET)
SOT23-5
() is for G680H
VCC
VCC
HTH
G680/G681
LTH RESET
(RESET)
GND
VCC
*RPULL-UP
µP
RESET
INPUT
GND
*G681 ONLY
Ver: 03 Preliminary
Jan 25 2002
TEL: 886-3-5788833
http://www.gmt.com.tw
1
Global Mixed-mode Technology Inc.
G680/G681
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
5
4.5 Vcc=5V
4 Vcc=3.3V
3.5
3 Vcc=2.5V
2.5
2
1.5
1
0.5
0
-40 -20
0 20 40 60
Temperature (°C)
80
Reset Timeout Period
vs. Temperature
800
700
VCC=5.5V
600
500
400 VCC=3V
300
200
100
0
-40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90
Temperature (°C)
70
60
50
40
30
20
10
0
-40
Power -Down Reset Delay
vs. Temperature
VOD=VTH-VLTH
VOD=10mV
VOD=100mV
VOD=200mV
-20 0 20 40 60
Temperature(°C)
80
Normalized Reset Threshold
vs. Temperature
1.002
1
0.998
0.996
0.994
0.992
0.99
0.988
0.986
-40 -30 -20 -10 0 10 20 27 30 40 50 60 70 80 90
Temperature (°C)
Ver: 03 Preliminary
Jan 25 2002
TEL: 886-3-5788833
http://www.gmt.com.tw
4
4페이지 Global Mixed-mode Technology Inc.
Package Information
D
EH
G680/G681
C
L
e1
e
θ1
A2
b
A
A1
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
e1
H
L
θ1
Taping Specification
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)
0.95
2.80
------
5º
MAX
1.30
0.10
0.90
0.50
0.25
3.10
1.80
-----
-----
3.00
-----
9º
Feed Direction
SOT23-5 Package Orientation
Ver: 03 Preliminary
Jan 25 2002
7
TEL: 886-3-5788833
http://www.gmt.com.tw
7페이지 | |||
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다운로드 | [ G681.PDF 데이터시트 ] |
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구매 문의 | 일반 IC 문의 : 샘플 및 소량 구매 ----------------------------------------------------------------------- IGBT, TR 모듈, SCR 및 다이오드 모듈을 포함한 광범위한 전력 반도체를 판매합니다. 전력 반도체 전문업체 상호 : 아이지 인터내셔날 사이트 방문 : [ 홈페이지 ] [ 블로그 1 ] [ 블로그 2 ] |
부품번호 | 상세설명 및 기능 | 제조사 |
G680 | Microprocessor Reset IC | Global Mixed-mode Technology |
G681 | Microprocessor Reset IC | Global Mixed-mode Technology |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |