SP337EBEY-L Datasheet, PDF (6/18 Pages) Exar Corporation – 3.3V TO 5V RS-232/RS-485/RS-422 MULTIPROTOCOL TRANSCEIVER

SP337E
3.3V TO 5V RS-232/RS-485/RS-422 MULTIPROTOCOL TRANSCEIVER
REV. 1.0.2
UNLESS OTHERWISE NOTED: VCC = +3.3V +/-5% OR +5.0V +/-5%, C1-C4 = 0.1μF; TA = TMIN TO TMAX.
TYPICAL VALUES ARE AT VCC = 3.3V, TA = +25^OC.
SYMBOL
PARAMETERS
MIN. TYP. MAX. UNITS
CONDITIONS
I_OSS
Receiver Output ShortCircuit Current
I_OZ
Receiver Output Leakage Current
SINGLE-ENDED RECEIVER INPUTS (RS-232)
+/-40 +/-65 mA 0 < Vo < Vcc
+/-0.1 +/-1.5 μA Receivers Disabled
Input Voltage Range
-15
+15 V
Input Threshold Low
Input Threshold HIGH
Input Hysteresis
Input Resistance
0.6 1.2
V V_CC = 3.3V
0.8 1.5
V V_CC = 5.0V
1.5 2.0
V V_CC = 3.3V
1.8 2.4
V V_CC = 5.0V
0.5
V
3
5
7
kΩ
DIFFERENTIAL RECEIVER INPUTS (RS-485 / RS-422)
R_IN
V_TH
ΔV_TH
Receiver Input Resistance
Receiver Differential Threshold
Receiver Input Hysteresis
I_IN
Input Current
SINGLE-ENDED DRIVER OUTPUTS (RS-232)
V_O
Output Voltage Swing
96
-200
-125
30
-50
125
-100
kΩ -7V ≤ V_CM ≤ +12V
mV
mV V_CM = 0V
μA V_IN = 12V
μA V_IN = -7V
+/-5.0 +/-5.4
V Output Loaded with 3kΩ to Gnd
+/-7.0 V No Load Output
Short Circuit Current
Power Off Impedance
300
DIFFERENTIAL DRIVER OUTPUTS (RS-485 / RS-422)
2
1.5
V_OD
Differential Driver Output (Tx_Out)
1.5
1.5
ΔV_OD
Change In Magnitude of
Differential Output Voltage
-0.2
10M
+/-60
mA V_O = 0V
W Vcc = 0V; V_O = +/-2V
Vcc
Vcc
Vcc
Vcc
+0.2
V R_L = 100Ω (RS-422), Figure 2
V R_L = 54Ω (RS-485), Figure 2
V V_CM = -7V, Figure 3
V V_CM = +12V, Figure 3
V R_L = 54Ω or 100Ω, Figure 2
V_OC
ΔV_OC
Driver CommonMode Output Voltage
Change In Magnitude of
Common Mode Output Voltage
3
V R_L = 54Ω or 100Ω, Figure 2
0.2
V R_L = 54Ω or 100Ω, Figure 2
I_OSD
Driver Output Short Circuit Current
I_O
Output Leakage Current
TIMING CHARACTERISTICS
+/-250 mA V = +12V to -7V, Figure 4
TXEN = 0V or Shutdown,
+/-100 μA _{VO = +12V to -7V}
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