參數資料
型號: MC75172B
廠商: ON SEMICONDUCTOR
英文描述: QUAD EIA-485 LINE DRIVERS
中文描述: 四評- 485線驅動器
文件頁數: 10/12頁
文件大?。?/td> 180K
代理商: MC75172B
MC75172B MC75174B
10
MOTOROLA ANALOG IC DEVICE DATA
Figure 18. Typical EIA–485 System
NOTES:
1.Terminating resistors RT must be located at the physical ends of the cable.
2.Stubs should be as short as possible.
3.Circuit ground of all drivers and receivers must be connected via a dedicated wire within the cable.
Do not rely on chassis ground or power line ground.
#8
TTL
R
TTL
TTL
#3
TTL
R
En
#2
TTL
TTL
En
TTL
R
TTL
#1
R
TTL
RT
#1
En
D
#3
D
#5
D
TTL
En
#6
R
TTL
R
En
#5
R
#6
D
#7
RT
TTL
TTL
R
En
TTL
#4
D
5 “off” drivers (@ 0.06 U.L. each),
+8 receivers (@ 1.0 U.L. each) = 8.3 Unit Loads
RT = 120
at each end of the cable.
#4
D
#2
120
Twisted
Pair
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MC75172BDWG 功能描述:RS-485接口IC Quad EIA-485 Line Driver w/3 State Out RoHS:否 制造商:Texas Instruments 數據速率:250 Kbps 工作電源電壓:3.3 V 電源電流:750 uA 工作溫度范圍:- 40 C to + 125 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube
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