SP3485EN-L Datasheet, PDF (3/9 Pages) Exar Corporation – +3.3V Low Power Half-Duplex RS-485 Transceiver with 10Mbps Data Rate

T_AMB = T_MIN to T_MAX and V_CC = +3.3V +/-5% unless otherwise noted.
PARAMETERS
MIN.
TYP.
SP3485 DRIVER AC Characteristics continued
Driver Enable to Output High
52
Driver Enable to Output Low
60
Driver Disable Time from Low
40
Driver Disable Time from High
60
SP3485 RECEIVER
DC Characteristics
Differential Input Threshold
-0.2
Input Hysteresis
20
Output Voltage HIGH
Vcc-0.4
Output Voltage LOW
Three-State (High Impedance)
Output Current
Input Resistance
12
15
Input Current (A, B); V_IN = 12V
Input Current (A, B); V_IN = -7V
Short Circuit Current
7
SP3485 RECEIVER
AC Characteristics
Maximum Data Rate
10
Receiver Input to Output, t_PLH
40
70
Receiver Input to Output, t_PLH
Receiver Input to Output, t_PHL
40
70
Receiver Input to Output, t_PHL
Differential Receiver Skew
4
Receiver Enable to Output Low
35
Receiver Enable to Output High
35
Receiver Disable from Low
35
Receiver Disable from High
35
POWER REQUIREMENTS
Supply Current , No Load
Supply Current , No Load
1000
800
ELECTRICAL CHARACTERISTICS
MAX. UNITS CONDITIONS
120
ns Figures 4 and 11
120
ns Figures 5 and 11
120
ns Figures 5 and 11
120
ns Figures 4 and 11
+0.2
0.4
+/-1
+1.0
-0.8
60
Volts
mV
Volts
Volts
µA
-7V ≤ V_CM ≤ +12V
V_CM = 0V
V_ID = +200mV, -1.5mA
V_ID = -200mV, 2.5mA
0V ≤ V_O ≤ V_CC; RE = V_CC
kΩ -7V ≤ V_CM ≤ +12V
mA DE = 0V, V_CC = 0V or 3.6V,
V_IN = 12V
mA DE = 0V, V_CC = 0V or 3.6V,
V_IN = -7V
mA 0V ≤ V_CM ≤ V_CC
Mbps RE = 0V, DE = 0V
100
ns Figures 6 and 12
70
ns T_AMB = +25°C, Vcc = 3.3V,
Figures 6 and 12
100
ns Figures 6 and 12
70
ns T_AMB = +25°C, Vcc = 3.3V,
Figures 6 and 12
ns
t_RSKEW = |t_RPHL- t_RPLH|,
Figures 6 and 12
60
ns Figures 7 and 13,
S₁ closed, S₂ open
60
ns Figures 7 and 13,
S₂ closed, S₁ open
60
ns Figures 7 and 13,
S₁ closed, S₂ open
60
ns Figures 7 and 13,
S₂ closed, S₁ open
2000
1500
µA RE, DI = 0V or V_CC ; DE = V_CC
µA RE = 0V, DI = 0V or V_CC, DE = 0V
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com

SP3485_100_061912