- 您現(xiàn)在的位置：買賣IC網 > PDF目錄358877 > LM87 (National Semiconductor Corporation) Serial Interface System Hardware Monitor with Remote Diode Temperature Sensing PDF資料下載
參數(shù)資料
| 型號： | LM87 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Serial Interface System Hardware Monitor with Remote Diode Temperature Sensing |
| 中文描述： | 串行接口系統(tǒng)硬件監(jiān)控與遠程二極管溫度傳感器 |
| 文件頁數(shù)： | 6/32頁 |
| 文件大?。?/td> | 470K |
| 代理商： | LM87 |
第1頁第2頁第3頁第4頁第5頁當前第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁
AC Electrical Characteristics
The following specifications apply for +2.8 V
DC
≤
V
+
≤
+3.8 V
on SMBCLK and SMBData, unless otherwise specified.
Bold-
face limits apply for T
A
= T
J
= T
MIN
to T
MAX
;
all other limits T
A
= T
J
= 25C. (Note 17)
Symbol
Parameter
Conditions
Typical
(Note 9)
Limits
(Note 10)
Units
(Limits)
SERIAL BUS TIMING CHARACTERISTICS
t
1
SMBCLK (Clock) Period
t
rise
SMBCLK and SMBData Rise Time
t
fall
SMBCLK and SMBData Fall Time
t
2
Data In Setup Time to SMBCLK High
t
3
Data Out Stable After SMBCLK Low
2.5
1
300
100
100
300
100
μs (min)
μs (max)
ns (max)
ns (min)
ns (min)
ns (max)
ns (min)
t
4
SMBData Low Setup Time to SMBCLK Low
(start)
SMBData High Hold Time After SMBCLK
High (stop)
SMBCLK low time required to reset the Serial
Bus Interface to the Idle State
t
5
100
ns (min)
t
TIMEOUT
31
25
35
80
ms
ms (min)
ms (max)
pF (max)
C
L
Capacitive Load on SMBCLK and SMBData
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:
The Absolute maximum input range for :
+2.5Vin
- 0.3 V to (1.4 x V
+
+ 0.42 V or 6 V, whichever is smaller
+3.3Vin
- 0.3 V to (1.8 x V
+
+ 0.55 V or 6 V, whichever is smaller.
Note 4:
When the input voltage (V
) at any pin exceeds the power supplies (V
<
GND 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 5:
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 6:
The human body model is a 100 pF capacitor discharged through a 1.5 k
resistor into each pin.
Note 7:
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 8:
Parasitics and or ESD protection circuitry are shown in the figure below for the LM87’s pins. The nominal breakdown voltage of the zener D3 is 6.5 V. Care
should be taken not to forward bias the parasitic diode, D1, present on pins:A0/NTEST_OUT,A1 and DACOut/NTEST_IN. Doing so by more than 50 mV may corrupt
a temperature or voltage measurement.
10099504
FIGURE 1. Serial Bus Timing Diagram
L
www.national.com
6
相關PDF資料 |
PDF描述 |
|---|---|
| LM89 | 【0.75∑C Accurate, Remote Diode and Local Digital Temperature Sensor with Two-Wire Interface |
| LM8M64 | Color STN LCD Module |
| LM8V302 | Color STN-LCD Module(Handheld PC) |
| LM8V30 | Color STN-LCD Module(Handheld PC) |
| LM8V311 | DEVlCESPECIFICATIONfoor for Passive Matrix Color LCD Module (640 X 480 dots) |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LM87CIMT | 功能描述:板上安裝溫度傳感器 RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關閉: 安裝風格: 封裝 / 箱體: 設備功能:Temperature and Humidity Sensor |
| LM87CIMT | 制造商:Texas Instruments 功能描述:HDW MON, 2 REMOTE TEMP SENS, SMD 制造商:Texas Instruments 功能描述:HDW MON, 2 REMOTE TEMP SENS, SMD; IC Output Type:Voltage; Sensing Accuracy Range: 3C; Sensing Temperature Min:-40C; Sensing Temperature Max:+125C; Supply Voltage Min:2.8V; Supply Voltage Max:3.8V; Sensor Case Style:TSSOP; No. of ;RoHS Compliant: Yes |
| LM87CIMT/NOPB | 功能描述:板上安裝溫度傳感器 Hdw Mon & 2 Remote Temp Sens RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關閉: 安裝風格: 封裝 / 箱體: 設備功能:Temperature and Humidity Sensor |
| LM87CIMTX | 功能描述:板上安裝溫度傳感器 RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關閉: 安裝風格: 封裝 / 箱體: 設備功能:Temperature and Humidity Sensor |
| LM87CIMTX/NOPB | 功能描述:板上安裝溫度傳感器 RoHS:否 制造商:Omron Electronics 輸出類型:Digital 配置: 準確性:+/- 1.5 C, +/- 3 C 溫度閾值: 數(shù)字輸出 - 總線接口:2-Wire, I2C, SMBus 電源電壓-最大:5.5 V 電源電壓-最小:4.5 V 最大工作溫度:+ 50 C 最小工作溫度:0 C 關閉: 安裝風格: 封裝 / 箱體: 設備功能:Temperature and Humidity Sensor |
發(fā)布緊急采購，3分鐘左右您將得到回復。