- 鎮ㄧ従(xi脿n)鍦ㄧ殑浣嶇疆锛�璨疯常IC缍�(w菐ng) > PDF鐩寗10133 > LTC1482CMS8#TRPBF (Linear Technology)IC TXRX RS485 LOWPWR 8-MSOP PDF璩囨枡涓嬭級
鍙冩暩(sh霉)璩囨枡
| 鍨嬭櫉(h脿o)锛� | LTC1482CMS8#TRPBF |
| 寤犲晢锛� | Linear Technology |
| 鏂囦欢闋佹暩(sh霉)锛� | 5/16闋� |
| 鏂囦欢澶�?銆�?/td> | 0K |
| 鎻忚堪锛� | IC TXRX RS485 LOWPWR 8-MSOP |
| 妯�(bi膩o)婧�(zh菙n)鍖呰锛� | 2,500 |
| 椤炲瀷锛� | 鏀剁櫦(f膩)鍣� |
| 椹�(q奴)鍕�(d貌ng)鍣�/鎺ユ敹鍣ㄦ暩(sh霉)锛� | 1/1 |
| 瑕�(gu墨)绋嬶細 | RS422锛孯S485 |
| 闆绘簮闆诲锛� | 4.75 V ~ 5.25 V |
| 瀹夎椤炲瀷锛� | 琛ㄩ潰璨艰 |
| 灏佽/澶栨锛� | 8-TSSOP锛�8-MSOP锛�0.118"锛�3.00mm 瀵級 |
| 渚涙噳(y墨ng)鍟嗚ō(sh猫)鍌欏皝瑁濓細 | 8-MSOP |
| 鍖呰锛� | 甯跺嵎 (TR) |
13
LTC1482
APPLICATIONS INFORMATION
WU
U
The supply current does not drop below 20
A immedi-
ately. DE and DI/SHDN must be low for a least 600ns
simultaneously for ICC to drop to half its operating value
(driver outputs unloaded) and for tCDH(SHDN) before drop-
ping to the 20
A level. Taking either DE or DI/SHDN high
will wake the LTC1482 within 5
s.
In some applications, the A and B lines are pulled to VCC or
GND through external resistors to force the line to a high
or low state when all connected drivers are disabled. In
shutdown, the supply current will be higher than 10
A due
to the additional current drawn through the external pull-
up and the 22k input resistance of the LTC1482.
ESD Protection
The ESD performance of the LTC1482 A and B pins is
characterized to meet
卤15kV using the Human Body
Model (100pF, 1.5k
), IEC-1000-4-2 Level 4 (卤8kV)
contact mode and IEC-1000-4-2 Level 3 (
卤8kV) air dis-
charge mode. This means that external voltage suppres-
sors are not required in many applications, when com-
pared with parts that are only protected to
卤2kV. Pins
other than the A and B pins are protected to
卤3kV typical
per the Human Body Model.
When powered up, the LTC1482 does not latch up or
sustain damage when the A and B pins are tested using any
of the three conditions listed. The data during the ESD
event may be corrupted, but after the event the LTC1482
continues to operate normally. The additional ESD protec-
tion at the A and B pins is important in applications where
these pins are exposed to the external world via connec-
tions to sockets.
Fault Protection
When shorted to 鈥� 7V or 10V at room temperature, the
short-circuit current in the driver pins is limited by internal
protection circuitry to 250mA. Over the industrial tem-
perature range, the absolute maximum positive voltage at
any driver pin should be limited to 10V to avoid damage to
the part. At higher ambient temperatures, the rise in die
temperature, due to the short-circuit current, may trip the
thermal shutdown circuit. This circuit protects the part
against prolonged shorts at the driver outputs. If a driver
output is shorted to another output or to VCC , the current
will be limited to 250mA. If the die temperature rises above
150
掳C, the thermal shutdown circuit three-states the
driver outputs to open the current path. When the die cools
down to about 130
掳C, the driver outputs are taken out of
three-state. If the short persists, the part will heat again
and the cycle will repeat. This thermal oscillation occurs at
about 10Hz and protects the part from excessive power
dissipation. The average fault current drops as the driver
cycles between active and three-state. When the short is
removed, the part will return to normal operation.
When the driver is disabled, the receiver inputs can
withstand the entire 鈥� 7V to 12V RS485 common mode
range without damage.
鐩搁棞(gu膩n)PDF璩囨枡 |
PDF鎻忚堪 |
|---|---|
| LTC1482CMS8#TR | IC TXRX RS485 DET/FAILSAFE 8MSOP |
| AD7893BRZ-5 | IC ADC 12BIT SRL T/H LP 8SOIC |
| IDT7202LA15SOGI8 | IC FIFO ASYNCH 1KX9 15NS 28SOIC |
| AD7893BRZ-2 | IC ADC 12BIT SRL T/H LP 8SOIC |
| IDT7202LA12SOG8 | IC FIFO ASYNCH 1KX9 12NS 28SOIC |
鐩搁棞(gu膩n)浠ｇ悊鍟�/鎶€琛�(sh霉)鍙冩暩(sh霉) |
鍙冩暩(sh霉)鎻忚堪 |
|---|---|
| LTC1482CN8 | 鍔熻兘鎻忚堪:IC TXRX RS485 LOWPWR 8-DIP RoHS:鍚� 椤炲垾:闆嗘垚闆昏矾 (IC) >> 鎺ュ彛 - 椹�(q奴)鍕�(d貌ng)鍣�锛屾帴鏀跺櫒锛屾敹鐧�(f膩)鍣� 绯诲垪:- 妯�(bi膩o)婧�(zh菙n)鍖呰:1 绯诲垪:- 椤炲瀷:绶氳矾鏀剁櫦(f膩)鍣� 椹�(q奴)鍕�(d貌ng)鍣�/鎺ユ敹鍣ㄦ暩(sh霉):5/3 瑕�(gu墨)绋�:RS232 闆绘簮闆诲:3 V ~ 5.5 V 瀹夎椤炲瀷:琛ㄩ潰璨艰 灏佽/澶栨:28-SOIC锛�0.295"锛�7.50mm 瀵級 渚涙噳(y墨ng)鍟嗚ō(sh猫)鍌欏皝瑁�:28-SOIC 鍖呰:Digi-Reel® 鐢�(ch菐n)鍝佺洰閷勯爜闈�:918 (CN2011-ZH PDF) 鍏跺畠鍚嶇ū:296-25096-6 |
| LTC1482CN8#PBF | 鍔熻兘鎻忚堪:IC TXRX RS485 LOWPWR 8-DIP RoHS:鏄� 椤炲垾:闆嗘垚闆昏矾 (IC) >> 鎺ュ彛 - 椹�(q奴)鍕�(d貌ng)鍣�锛屾帴鏀跺櫒锛屾敹鐧�(f膩)鍣� 绯诲垪:- 妯�(bi膩o)婧�(zh菙n)鍖呰:1 绯诲垪:- 椤炲瀷:绶氳矾鏀剁櫦(f膩)鍣� 椹�(q奴)鍕�(d貌ng)鍣�/鎺ユ敹鍣ㄦ暩(sh霉):5/3 瑕�(gu墨)绋�:RS232 闆绘簮闆诲:3 V ~ 5.5 V 瀹夎椤炲瀷:琛ㄩ潰璨艰 灏佽/澶栨:28-SOIC锛�0.295"锛�7.50mm 瀵級 渚涙噳(y墨ng)鍟嗚ō(sh猫)鍌欏皝瑁�:28-SOIC 鍖呰:Digi-Reel® 鐢�(ch菐n)鍝佺洰閷勯爜闈�:918 (CN2011-ZH PDF) 鍏跺畠鍚嶇ū:296-25096-6 |
| LTC1482CS8 | 鍔熻兘鎻忚堪:IC TXRX RS485 LOWPWR 8-SOIC RoHS:鍚� 椤炲垾:闆嗘垚闆昏矾 (IC) >> 鎺ュ彛 - 椹�(q奴)鍕�(d貌ng)鍣�锛屾帴鏀跺櫒锛屾敹鐧�(f膩)鍣� 绯诲垪:- 妯�(bi膩o)婧�(zh菙n)鍖呰:121 绯诲垪:- 椤炲瀷:鏀剁櫦(f膩)鍣� 椹�(q奴)鍕�(d貌ng)鍣�/鎺ユ敹鍣ㄦ暩(sh霉):1/1 瑕�(gu墨)绋�:RS422锛孯S485 闆绘簮闆诲:3 V ~ 3.6 V 瀹夎椤炲瀷:琛ㄩ潰璨艰 灏佽/澶栨:10-WFDFN 瑁搁湶鐒婄洡 渚涙噳(y墨ng)鍟嗚ō(sh猫)鍌欏皝瑁�:10-DFN锛�3x3锛� 鍖呰:绠′欢 |
| LTC1482CS8#PBF | 鍔熻兘鎻忚堪:IC TXRX RS485 LOWPWR 8-SOIC RoHS:鏄� 椤炲垾:闆嗘垚闆昏矾 (IC) >> 鎺ュ彛 - 椹�(q奴)鍕�(d貌ng)鍣�锛屾帴鏀跺櫒锛屾敹鐧�(f膩)鍣� 绯诲垪:- 鐢�(ch菐n)鍝佸煿瑷�(x霉n)妯″:RS-232 & USB Transceiver 妯�(bi膩o)婧�(zh菙n)鍖呰:2,000 绯诲垪:- 椤炲瀷:鏀剁櫦(f膩)鍣� 椹�(q奴)鍕�(d貌ng)鍣�/鎺ユ敹鍣ㄦ暩(sh霉):1/1 瑕�(gu墨)绋�:RS232 闆绘簮闆诲:3 V ~ 5.5 V 瀹夎椤炲瀷:琛ㄩ潰璨艰 灏佽/澶栨:16-SSOP锛�0.209"锛�5.30mm 瀵級 渚涙噳(y墨ng)鍟嗚ō(sh猫)鍌欏皝瑁�:16-SSOP 鍖呰:甯跺嵎 (TR) 鍏跺畠鍚嶇ū:296-19849-2 |
| LTC1482CS8#PBF | 鍒堕€犲晢:Linear Technology 鍔熻兘鎻忚堪:RS485 Driver IC |
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