參數(shù)資料
型號(hào): ST3485ECDR
廠商: 意法半導(dǎo)體
英文描述: 3.3V POWERED, 15KV ESD PROTECTED, TRASMIT AT UP TO 12MBPS TRUE RS-485/RS-422 TRANSCEIVER
中文描述: 3.3V供電,15KV靜電保護(hù),TRASMIT高達(dá)12Mbps的真RS-485/RS-422收發(fā)器
文件頁(yè)數(shù): 4/16頁(yè)
文件大小: 361K
代理商: ST3485ECDR
ST3485E
4/16
TRANSMITTER ELECTRICAL CHARACTERISTICS
V
CC
= 3V to 3.6V, T
A
= -40 to 85°C, unless otherwise specified. Typical values are referred to T
a
= 25°C)
RECEIVER ELECTRICAL CHARACTERISTICS
V
CC
= 3V to 3.6V, T
A
= -40 to 85°C, unless otherwise specified. Typical values are referred to T
a
= 25°C)
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
V
OD
Differential Drive Output
R
L
= 100
(RS-422) (Figure 1)
R
L
= 54
(RS-485) (Figure 1)
R
L
= 60
(RS-485) (Figure 2)
R
L
= 54
or 100
(Figure 1)
2
V
V
V
V
1.5
1.5
V
OD
Change in magnitude of
Driver Differential Output
Voltage for Complementary
Output States (Note1)
Driver Common Mode
Output Voltage
Change in magnitude of
Driver Common Mode
Output Voltage (Note1)
Driver Short Circuit Output
Current
0.2
V
OC
R
L
= 54
or 100
(Figure 1)
3
V
V
OC
R
L
= 54
or 100
(Figure 1)
0.2
V
I
OSD
±
250
mA
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
V
TH
Receiver Differential
Threshold Voltage
Receiver Input Hysteresis
Receiver Output High
Voltage
Receiver Output Low
Voltage
3-State (High Impedance)
Output Current at Receiver
Receiver Input Resistance
Receiver Short-Circuit
Current
V
CM
= -7V to 12V, DE = 0
-0.2
-0.015
V
V
TH
V
OH
V
CM
= 0V
I
OUT
= -4mA, V
ID
= 200mV, (Figures 8,9)
30
V
V
2
V
OL
I
OUT
= 4mA, V
ID
= -200mV, (Figure 3)
0.4
V
I
OZR
V
CC
= 3.6V
V
O
= 0V to V
CC
±
1
μ
A
R
RIN
I
OSR
V
CM
= -7V to 12V
V
RO
= 0V to V
CC
24
7
K
mA
60
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