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參數(shù)資料
| 型號(hào)： | G768 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 元件分類： | 溫度/濕度傳感器 |
| 英文描述： | Remote/Local Temperature Sensor, 2 Fan Controllers with SMBus Serial Interface and System Reset Circuit |
| 中文描述： | 遠(yuǎn)程/本地溫度傳感器，2個(gè)風(fēng)扇，帶有SMBus串行接口和系統(tǒng)復(fù)位電路控制器 |
| 文件頁(yè)數(shù)： | 4/15頁(yè) |
| 文件大?。?/td> | 370K |
| 代理商： | G768 |
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Ver 1.3
Oct 28, 2002
TEL: 886-3-5788833
http://www.gmt.com.tw
4
G768B
Global Mixed-mode Technology Inc.
Electrical Characteristics
(continued)
(Vcc = + 5V, T
A
= 60°C, unless otherwise noted.)
PARAMETER
CONDITIONS
MIN TYP
MAX
UNITS
SMBus Interface
Logic Input High Voltage
Logic Input Low Voltage
Logic Output Low Sink Current
SMBCLK, SMBDATA; Vcc = 4.5V to 5.5V
SMBCLK, SMBDATA; Vcc = 4.5V to 5.5V
ALERT , SMBDATA forced to 0.4V
2.4
6
-2
DC
4.7
4
4.7
500
V
V
mA
μA
μA
pF
kHz
μs
μs
μs
ns
0.8
1
2
100
ALERT Output High Leakage Current ALERT forced to 5.5V
Logic Input Current
SMBus Input Capacitance
SMBus Clock Frequency
SMBCLK Clock Low Time
SMBCLK Clock High Time
SMBus Start-Condition Setup Time
SMBus Repeated Start-Condition
Setup Time
SMBus Start-Condition Hold Time
SMBus Start-Condition Setup Time
SMBus Data Valid to SMBCLK Ris-
ing-Edge Time
SMBus Data-Hold Time
SMBCLK Falling Edge to SMBus
Data-Valid Time
Logic inputs forced to Vcc or GND
SMBCLK, SMBDATA
(Note 4)
t
LOW
, 10% to 10% points
t
HIGH
, 90% to 90% points
t
SU :
STA ,
90% to 90% points
5
t
HD: STA ,
10% of SMBDATA to 90% of SMBCLK
t
SD: STO ,
90% of SMBDATA to 10% of SMBDATA
t
SU: DAT ,
10% or 90% of SMBDATA to 10% of
SMBCLK
t
HD : DAT
(Note 5)
Master clocking in data
4
4
μs
μs
ns
800
0
μs
μs
1
Electrical Characteristics
(continued)
(V
CC
=full range, T
A
= 60°C, unless otherwise noted.)
PARAMETER
SYMBOL
V
TH
V
OL
CONDITIONS
MIN
4.2
TYP
4.4
340
MAX
4.5
0.4
UNITS
V
ms
V
Reset Threshold
Reset Active Timeout Period
RESET
Output Voltage Low
V
CC
=V
TH
min I
SINK
=3.2mA
RESET
Output Voltage High
V
OH
V
CC
>V
TH
max
I
SOURCE
=5.0mA
V
CC
-1.5
V
Note 1:
Guaranteed but not 100% tested.
Note 2:
Quantization error is not included in specifications for temperature accuracy. For example, if the G768B
device temperature is exactly +66.7°C, or +68°C (due to the quantization error plus the +1/2°C offset
used for rounding up) and still be within the guaranteed ±3°C error limits for the +60°C to +100°C tem-
perature range. See Table3.
Note 3:
A remote diode is any diode-connected transistor from Table1. T
R
is the junction temperature of the re-
mote diode. See Remote Diode Selection for remote diode forward voltage requirements.
Note 4:
The SMBus logic block is a static design that works with clock frequencies down to DC. While slow op-
eration is possible, it violates the 10kHz minimum clock frequency and SMBus specifications, and may
monopolize the bus.
Note 5:
Note that a transition must internally provide at least a hold time in order to bridge the undefined region
(300ns max) of SMBCLK's falling edge.
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