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參數(shù)資料
| 型號： | LM74A-5MDA |
| 廠商： | National Semiconductor Corporation |
| 元件分類： | 溫度/濕度傳感器 |
| 英文描述： | SPI/MICROWIRE 12-Bit Plus Sign Temperature Sensor (LM74 in Die Form) |
| 中文描述： | 的SPI / MICROWIRE的12位帶符號溫度傳感器（LM74在模具中） |
| 文件頁數(shù)： | 5/12頁 |
| 文件大?。?/td> | 605K |
| 代理商： | LM74A-5MDA |
Serial Bus Digital Switching Characteristics
Unless otherwise noted, these specifications apply for V
+
= 4.5V to 5.5V for the LM74-5 MDA and V
+
= 3.0V to 3.6V for the
LM74-3 MDA.(Note 5).
Boldface limits apply for T
A
= T
J
= T
MIN
to T
MAX
;
all other limits T
A
= T
J
=+25C, unless otherwise
noted.
Symbol
Parameter
Conditions
Typical
(Note 6)
Limits
(Note 7)
0.16
DC
100
70
100
200
50
30
Units
(Limit)
μs (min)
(max)
ns (min)
ns (max)
ns (max)
ns (max)
ns (min)
ns (min)
t
1
SC (Clock) Period
t
2
t
3
t
4
t
5
t
6
t
7
CS Low to SC (Clock) High Set-Up Time
CS Low to Data Out (SO) Delay
SC (Clock) Low to Data Out (SO) Delay
CS High to Data Out (SO) TRI-STATE
SC (Clock) High to Data In (SI) Hold Time
Data In (SI) Set-Up Time to SC (Clock) High
Note 1:
Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. DC and AC electrical specifications do not apply when operating
the device beyond its rated operating conditions.
Note 2:
When the input voltage (V
I
) at any pin exceeds the power supplies (V
I
<
GND or V
I
>
+V
S
) 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 3:
Human body model, 100 pF discharged through a 1.5 k
resistor. Machine model, 200 pF discharged directly into each pin.
Note 4:
The life expectancy of the LM74A will be reduced when operating at elevated temperatures.
Note 5:
All LM74A parts will function over the V
+
supply voltage range of 3V to 5.5V. The LM74A temperature error specifications for temperature ranges of 0C to
+140C, 0C to +150C and 40C to +150C include error induced by power supply variation of
±
10% from the nominal value of 5V or 3.3V.
Note 6:
Typicals are at T
A
= 25C and represent most likely parametric norm.
Note 7:
Limits are guaranteed to National’s AOQL (Average Outgoing Quality Level).
Note 8:
This specification is provided only to indicate how often temperature data is updated. The LM74Acan be read at any time without regard to conversion state
(and will yield last conversion result). A conversion in progress will not be interrupted. The output shift register will be updated at the completion of the read and a
new conversion restarted.
Note 9:
For best accuracy, minimize output loading. Higher sink currents can affect sensor accuracy with internal heating. This can cause an error of 0.64C at full
rated sink current and saturation voltage based on junction-to-ambient thermal resistance.
Timing Diagrams
20017704
FIGURE 2. Data Output Timing Diagram
L
www.national.com
5
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| LM74CIBP-5 | 功能描述:IC TEMP SENSOR DGTL 5-MICROSMD RoHS:否 類別:集成電路 (IC) >> PMIC - 熱管理 系列:- 標準包裝:1 系列:- 功能:溫度監(jiān)控系統(tǒng)（傳感器） 傳感器類型:內(nèi)部和外部 感應(yīng)溫度:-40°C ~ 125°C，外部傳感器 精確度:±2.5°C 本地（最大值），±5°C 遠程（最大值） 拓撲:ADC，比較器，寄存器庫 輸出類型:2 線 SMBus? 輸出警報:無 輸出風扇:無 電源電壓:2.7 V ~ 5.5 V 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-8 供應(yīng)商設(shè)備封裝:SOT-23-8 包裝:Digi-Reel® 其它名稱:296-22675-6 |
| LM74CIBPX- | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:SPI/MICROWIRE⑩ 12-Bit Plus Sign Temperature Sensor |
| LM74CIBPX-3 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:SPI/MICROWIRE⑩ Digital Temperature Sensor |
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