SP335E Datasheet, PDF (5/22 Pages) Exar Corporation – RS-232/RS-485/RS-422 TRANSCEIVER

SP335E
REV. 1.0.0
RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION
ELECTRICAL CHARACTERISTICS (Continued)
UNLESS OTHERWISE NOTED: 
V_CC = +3.0V to +5.5V, C1-C4 = 0.1µF; T_A = T_MIN to T_MAX. Typical values are at V_CC = 3.3V, T_A = +25°C.
SYMBOL
PARAMETERS
MIN. TYP. MAX. UNITS
CONDITIONS
RS-485/422 DIFFERENTIAL RECEIVER INPUTS (A,B)
R_IN
Receiver Input Resistance
96
I_IN
V_TH
'V_TH
R_TERM
Receiver Input Current
Receiver Differential
Threshold Voltage
Receiver Input Hysteresis
Termination Resistance
R_TERM Termination Resistance
-200
100
100
-125
25
120
120
125
-100
-50
155
140
k:
Termination disabled,
-7V d V_CM d +12V
µA V_IN = +12V
µA V_IN = -7V
mV -7V d V_CM d +12V
mV
:
Termination enabled, Figure 4
-7V d V_CM d +12V
: ^{Termination enabled, Figure 4}
V_CM = 0V
RS-485/422 DIFFERENTIAL DRIVER OUTPUTS (Y, Z)
1.5
V_OD
Differential Driver Output
1.5
2
_'V_OD_
Change In Magnitude of
Differential Output Voltage
V_CM
_'V_CM_
Driver Common Mode Output Voltage
Change In Magnitude of
Common Mode Output Voltage
I_OSD
Driver Output Short Circuit Current
I_O
Driver Output Leakage Current
V_CC
V_CC
V_CC
0.2
3
0.2
±250
±125
V R_L = 54: (RS-485), Figure 5
V -7V d V_CM d +12V, Figure 6
V R_L = 100: (RS-422), Figure 5
V R_L = 54: or 100:, Figure 5
V R_L = 54: or 100:, Figure 5
V R_L = 54: or 100:, Figure 5
mA -7V d V_Y or V_Zd +12V, Figure 7
DE = 0V or SHDN = 0V,
µA ^VY ^{or V}Z ^{= -7V or +12V,}
V_CC = 0V or 5.5V
5