T
MIN
to T
MAX
and V
CC
= +5.0V +/-5% unless otherwise noted.
ELECTRICAL CHARACTERISTICS
TYP.
MAX.
UNITS
CONDITIONS
PARAMETERS
AC Characteristics
Driver Enable to Output High
Driver Enable to Output Low
Driver Disable Time from High
Driver Disable Time from Low
SP481E/SP485E RECEIVER
DC Characteristics
Differential Input Threshold
Differential Input Threshold
(SP485EMN ONLY)
Input Hysteresis
Output Voltage High
Output Voltage Low
Three-State ( High Impedance)
Output Current
Input Resistance
Input Current (A, B); V
IN
= 2V
Input Current (A, B); V
IN
= -7V
Short Circuit Current
SP481E/SP485E RECEIVER
AC Characteristics
Max. Transmission Rate
Receiver Input to Output
Receiver Input to Output
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
MIN.
SP481E/SP485E DRIVER (continued)
40
40
40
40
70
70
70
70
ns
ns
ns
ns
C
L
= 100pF, see Figures 4 and 6,
S
2
closed
C
L
= 100pF, see Figures 4 and 6,
S
closed
C
L
= 100pF, see Figures 4 and 6,
S
2
closed
C
L
= 100pF, see Figures 4 and 6,
S
closed
-0.2
-0.4
20
3.5
+0.2
+0.4
Volts
Volts
mV
Volts
-7V ≤ V
CM
≤ +12V
-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
-7V ≤ V
CM
≤ +12V
DE = 0V, V
CC
= 0V or 5.25V,
V
IN
= 2V
DE = 0V, V
CC
= 0V or 5.25V,
V
IN
= -7V
0V ≤ V
O
≤ V
CC
0.4
+/-
2
5
+.0
-0.8
7
95
Volts
µA
kΩ
mA
mA
mA
0
20
20
45
45
3
45
45
45
45
70
70
70
70
00
00
Mbps
ns
ns
ns
ns
ns
ns
ns
RE = 0V, DE = 0V
t
PLH ;
See Figures 3 & 7, R
DIFF
=
54Ω, C
L
= C
L2
= 00pF
t
PHL ;
See Figures 3 & 7, R
DIFF
=
54Ω, C
L
= C
L2
= 00pF
R
DIFF
= 54Ω, C
L
= C
L2
= 100pF, see
Figures 3 and 7
C
RL
= 15pF, Figures 2 & 8; S
Closed
C
RL
= 15pF, Figures 2 & 8; S
2
Closed
C
RL
= 15pF, Figures 2 & 8; S
Closed
C
RL
= 15pF, Figures 2 & 8; S
2
Closed
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com
SP48E,485E_00_2808
3
EXAR [ EXAR CORPORATION ]
