參數(shù)資料
型號： LM79CCVF
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 模擬信號調(diào)理
英文描述： Microprocessor System Hardware Monitor
中文描述： SPECIALTY ANALOG CIRCUIT, PQFP44
封裝： 10 X 10 MM, PLASTIC, QFP-44
文件頁數(shù)： 9/31頁
文件大?。?/td> 481K
代理商： LM79CCVF
AC Electrical Characteristics
(Note 13) The following specifications apply for +4.25 V
DC
≤
V
CC
≤
+5.75 V
DC
unless otherwise specified.
Boldface limits apply for T
A
= T
J
= T
MIN
to T
MAX
;
all other limits T
A
= T
J
=
25C. (Continued)
Symbol
Parameter
Conditions
Typical
(Note 8)
Limits
(Note 9)
Units
(Limits)
SERIAL BUS TIMING CHARACTERISTICS
t
1
SCL (Clock) Period
t
2
Data In Setup Time to SCL High
t
3
Data Out Stable After SCL Low
t
4
SDA Low Setup Time to SCL Low (start)
t
5
SDA High Hold Time After SCL High (stop)
2.5
100
0
100
100
μs (min)
ns (min)
ns (min)
ns (min)
ns (min)
Note 1:
Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is
functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics. The guaranteed
specifications apply only for the test conditions listed. Some performance characteristics may degrade when the device is not operated under the listed test
conditions.
Note 2:
All voltages are measured with respect to GND, unless otherwise specified
Note 3:
When the input voltage (V
) at any pin exceeds the power supplies (V
<
(GNDD or GNDA) or V
>
V
), the current at that pin should be limited to 5 mA.
The 20 mA maximum package input current rating limits the number of pins that can safely exceed the power supplies with an input current of 5 mA to four.
Note 4:
The maximum power dissipation must be derated at elevated temperatures and is dictated by T
J
max,
θ
JA
and the ambient temperature, T
A
. The maximum
allowable power dissipation at any temperature is P
D
= (T
J
maxT
A
)/
θ
JA
.
Note 5:
The human body model is a 100 pF capacitor discharged through a 1.5 k
resistor into each pin. The machine model is a 200 pF capacitor discharged
directly into each pin.
Note 6:
See the section titled “Surface Mount” found in any post 1986 National Semiconductor Linear Data Book for other methods of soldering surface mount
devices.
Note 7:
Each input and output is protected by a nominal 6.5V breakdown voltage zener diode to GND; as shown below, input voltage magnitude up to 0.3V above
V
CC
or 0.3V below GND will not damage the LM79. There are parasitic diodes that exist between the inputs and the power supply rails. Errors in theADC conversion
can occur if these diodes are forward biased by more than 50 mV. As an example, if V
CC
is 4.50 V
DC
, input voltage must be
≤
4.55 V
DC
, to ensure accurate
conversions.
DS100036-6
FIGURE 3. Serial Bus Timing Diagram
L
www.national.com
9
相關(guān)PDF資料
PDF描述
LM79
LM81CIMTX-32 Serial Interface ACPI-Compatible Microprocessor System
LM81 Serial Interface ACPI-Compatible Microprocessor System
LM81CIMT-31 Serial Interface ACPI-Compatible Microprocessor System
LM82CIMQAX Remote Diode and Local Digital Temperature Sensor with Two-Wire Interface
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LM79GCP 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Negative Adjustable Voltage Regulator
LM79L 制造商:NSC 制造商全稱:National Semiconductor 功能描述:3-Terminal Negative Regulators
LM79L00 制造商:FCI 制造商全稱:First Components International 功能描述:LM79L00 Series 3-Terminal Negative Output voltage Regulators
LM79L05 制造商:KEXIN 制造商全稱:Guangdong Kexin Industrial Co.,Ltd 功能描述:Three-terminal negative voltage regulator
LM79L05A 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:3-Terminal 0.1A Negative Voltage Regulator
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*