SP337EBEY-L Datasheet, PDF (8/18 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
RS-485/RS-422 SHUTDOWN FEATURE APPLIES TO SP337EU ONLY
t_DZZV
Shutdown to Driver Output Valid
t_Dshutdwn Driver Time to Shutdown
t_RZZV
Shutdown to Receiver Output Valid
t_Rshutdwn Receiver Time to Shutdown
ESD PROTECTION
100 400 ns
100
ns
400 800 ns
100
ns
ESD Protection for TX and RI
Pins 3, 4, 6, 7, 15, 16, 17, 18, 24
+/-15
kV Human Body Model
All Other Pins
+/-2
kV Human Body model
FIGURE 2. RS-485 DRIVER DC TEST CIRCUIT
DI
T
VCC
R_L/2
VOD
R_L/2 _VOC
FIGURE 3. RS-485 DRIVER COMMON MODE LOAD TEST
DE = 3.3V
DI = 0 or Vcc _Tx
A
VOD
375Ω
60Ω
B
375Ω
V_CM
8