REV. 1.0.0 RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION ELECTRICAL CHARACTERISTICS (Continued) U" />
參數(shù)資料
型號： SP338EER1-L
廠商： Exar Corporation
文件頁數(shù)： 23/25頁
文件大?。?/td> 0K
描述： IC INTERFACE
標準包裝： 490
系列： *
其它名稱： 1016-1747
SP338E
7
REV. 1.0.0
RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION
ELECTRICAL CHARACTERISTICS (Continued)
UNLESS OTHERWISE NOTED:
VCC = +3.3V ±5% or +5.0V ±5%, C1-C4 = 0.1F; TA = TMIN to TMAX. Typical values are at VCC = 3.3V, TA = +25°C.
SYMBOL
PARAMETERS
MIN.
TYP.
MAX.
UNITS
CONDITIONS
DIFFERENTIAL RECEIVER INPUTS (RS-485 / RS-422)
RIN
Receiver Input Resistance
96
k
TERM = 0V,
-7V
≤ VIN ≤ +12V
VTH
Receiver Differential Threshold
Voltage
-200
-125
-50
mV
VTH
Receiver Input Hysteresis
25
mV
VCM = 0V
IIN
Receiver Input Current
125
A
VIN = +12V
-100
A
VIN = -7V
RTERM
Termination Resistance
100
120
155
TERM = VCC, Figure 9
-7V
≤ VCM ≤ +12V
RTERM
Termination Resistance
100
120
140
TERM = VCC, Figure 9
VCM = 0V
DIFFERENTIAL DRIVER OUTPUTS (RS-485 / RS-422)
VOD
Differential Driver Output
2
VCC
V
RL = 100 (RS-422), Figure 10
1.5
VCC
V
RL = 54 (RS-485), Figure 10
1.5
VCC
V
VCM = -7V, Figure 11
1.5
VCC
V
VCM = +12V, Figure 11
VOD
Change In Magnitude of
Differential Output Voltage
-0.2
+0.2
V
RL = 54 or 100, Figure 10
VCM
Driver CommonMode Output Voltage
3
V
RL = 54 or 100, Figure 10
VCM
Change In Magnitude of
Common Mode Output Voltage
0.2
V
RL = 54 or 100, Figure 10
IOSD
Driver Output Short Circuit Current
±250
mA
-7V
≤ VO ≤ +12V, Figure 12
IO
Driver Output Leakage Current
±100
A
ENABLE = 0V,
or DIR1 = 0V and DIR2 = 0V in
full duplex modes,
-7V
≤ VO ≤ +12V
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