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KII_NM485SLC

更新时间： 2024-01-08 08:55:14
品牌 Logo 应用领域
村田 - MURATA 驱动器
页数 文件大小 规格书
6页 168K
描述
Low Power Isolated EIA-485 Driver and Receiver

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KII_NM485SLC 数据手册

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NM485SLC  
Low Power Isolated EIA-485 Driver and Receiver  
ELECTRICAL CHARACTERISTICS  
Parameter  
Supply voltage, VCC  
Test conditions  
Min.  
4.75  
Typ.  
5.0  
Max.  
5.25  
5.0  
Units  
V
Isolated reference voltage, VREF  
+VREF Current  
RL=54Ω  
25  
mA  
V
High level input voltage, VIH  
Low level input voltage, VIL  
Common mode output voltage, VOC  
High level output current IOH  
Low level output current, IOL  
Common mode input voltage, VIC  
Differential input voltage, VID  
High level output current, IOH  
Low level output current, IOL  
2.8  
D ENABLE, R ENABLE and DIN  
0.8  
12  
V
-7.0  
V
Driver  
-60  
60  
mA  
mA  
V
12  
12  
V
FEATURES  
ꢀRoHS compliant  
Receiver  
-5.0  
25  
mA  
mA  
ꢀSite compatible with NM485D  
ꢀSingle 5V supply  
RECEIVER ELECTRICAL CHARACTERISTICS  
Parameter  
Test conditions  
Min.  
-0.2  
2.7  
Typ.  
70  
Max.  
0.2  
Units  
V
V
High threshold differential input, VTH  
Low threshold differential input, VTL  
Input hysteresis, ΔVT  
VO=2.7V, IO=-0.4mA  
VO=0.5V, IO=16mA  
ꢀThermal shutdown protection  
ꢀEIA-485 and CCITT V.10 & V.11 compatible  
ꢀDifferential driver and receiver  
ꢀDriver tri-state outputs active high enable  
ꢀLow Profile 24 pin DIL package style  
ꢀ1kVrms Isolation  
mV  
V
High level output voltage, VOH  
Low level output voltage, VOL  
VID=200mV, IOH=-5.0mA  
VID=-200mV, IOL=25mA  
Other input at 0V, VI=12V  
Other input at 0V, VI=-7.0V  
0.8  
1.0  
-0.8  
85  
V
Line input current, II  
mA  
Short circuit output current, IOS  
Input resistance, RI  
mA  
Kꢀ  
12  
ꢀThermal shutdown protection  
RECEIVER SWITCHING CHARACTERISTICS  
Parameter  
Test conditions  
VID=-1.5V to 1.5V, CL=15pF  
Min.  
Typ.  
150  
130  
90  
Max.  
180  
150  
150  
150  
150  
150  
Units  
ns  
DESCRIPTION  
Propagation delay time L to H, TPLH  
Propagation delay time H to L, TPHL  
Output disable time from high level  
Output disable time from low level  
Output enable time to high level  
Output enable time to low level  
The NM485SLC is a low power electrically iso-  
lated differential driver and receiver designed for  
bi-directional data communication or multipoint  
bus transmission at rates up to 2.5Mbits per  
second. The device combines a tri-state dif-  
ferential line driver and a differential input line  
receiver. The driver and receiver have active high  
and active low enables, respectively, which can  
be connected together to function as direction  
control. The receiver features a high output state  
when the inputs are left open. Thermal shutdown  
protection forces the driver into a high imped-  
ance state, under line fault conditions. No external  
components are needed as a single 5V supply  
powers all functions either side of the isolation  
boundary. The device is supplied in a low profile  
24 pin plastic package.  
ns  
CL=15pF  
CL=15pF  
CL=15pF  
CL=15pF  
ns  
90  
ns  
130  
80  
ns  
ns  
RECEIVER FUNCTION TABLE  
Differential inputs A-B  
VID≥0.2V  
R ENABLE  
Low level  
Low level  
Low level  
High level  
ROUT  
High level  
Undefined  
Low level  
High level  
-0.2V<VID<+0.2V  
VID≤-0.2V  
Irrelevant  
ISOLATION CHARACTERISTICS  
Parameter  
Isolation test voltage  
Isolation capacitance  
Conditions  
Flash tested for 1 second  
Min.  
1000  
Typ.  
40  
Max.  
Units  
Vrms  
pF  
ABSOLUTE MAXIMUM RATINGS  
Supply voltage VCC with respect to pin 11  
7V  
7V  
Input voltage D ENABLE, R ENABLE and DIN  
Receiver differential input voltage range  
Output voltage range, driver  
-14V to +14V  
-14V to +14V  
1000mW  
Power dissipation  
Data transmission rate  
2.5Mbps  
Lead temperature 1.5mm from case for 10 seconds  
300ºC  
For full details go to  
www.murata-ps.com/rohs  
All data taken at T =25°C, VCC=5V.  
A
www.murata-ps.com  
Technical enquiries - email: mk@murata-ps.com, tel: +44 (0)1908 615232  
KII_NM485SLC.A02 Page 1 of 6  
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