SP485EN-L Datasheet, PDF (3/11 Pages) Exar Corporation – Low Power Half-Duplex RS-485 Transceivers

T_MIN to T_MAX and V_CC = 5V +/-5% unless otherwise noted.
PARAMETERS
MIN.
SP485 DRIVER (continued)
AC Characteristics
Driver Enable to Output High
Driver Enable to Output Low
Driver Disable Time from High
Driver Disable Time from Low
SP483/SP485 RECEIVER
DC Characteristics
Differential Input Threshold
-0.2
Input Hysteresis
Output Voltage High
2.4
Output Voltage Low
0.0
Three-State ( High Impedance)
Output Current
Input Resistance
Input Current (A, B); V_IN = 12V
Input Current (A, B); V_IN = -7V
Short-Circuit Current
SP485 RECEIVER
AC Characteristics
Maximum Data Rate
5
Receiver Input to Output
60
Receiver Input to Output
60
Differential Receiver Skew
|t_PHL - t_PLH|
Receiver Enable to Output Low
Receiver Enable to Output High
Receiver Disable from LOW
Receiver Disable from High
TYP.
40
40
40
40
10
15
90
90
13
20
20
20
20
ELECTRICAL CHARACTERISTICS
MAX. UNITS CONDITIONS
70
ns C_L = 100pF, see figures 4 and 6,
S₂ closed
70
ns C_L = 100pF, see figures 4 and 6,
S₁ closed
70
ns C_L = 15pF, see figures 2 and 8,
S₂ closed
70
ns C_L = 15pF, see figures 2 and 8,
S₁ closed
+0.2
5
0.4
+/-1
+1.0
-0.8
95
Volts
mV
Volts
Volts
µA
-7V ≤ V_CM ≤ +12V
V_CM = 0V
I_O = -4mA, V_ID = +200mV
I_O = +4mA, V_ID = -200mV
0.4V ≤ V_O ≤ 2.4V; RE = 5V
kΩ -7V ≤ V_CM ≤ +12V
mA DE = 0V, V_CC = 0V or 5.25V,
V_IN = 12V
mA DE = 0V, V_CC = 0V or 5.25V,
V_IN = -7V
mA 0V ≤ V_CM ≤ V_CC
Mbps RE = 0V, DE = 0V
200
ns t_{PLH ;} Figures 3 and 7,
R_DIFF = 54Ω, C_L1 = C_L2 = 100pF
200
ns t_{PHL ;} Figures 3 and 7,
R_DIFF = 54Ω, C_L1 = C_L2 = 100pF
ns R_DIFF = 54Ω, C_L1 = C_L2 = 100pF,
Figures 3 and 7
50
ns C_RL = 15pF, Figures 2 and 8;
S₁ Closed
50
ns C_RL = 15pF, Figures 2 and 8;
S₂ Closed
50
ns C_RL = 15pF, Figures 2 and 8;
S₁ Closed
50
ns C_RL = 15pF, Figures 2 and 8;
S₂ Closed
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com

SP483_SP485_100_071410