ELECTRICAL CHARACTERISTICS
T
MIN
to T
MAX
and V
CC
= 5V
±
5% unless otherwise noted.
PARAMETERS
SP481/SP485 RECEIVER
AC Characteristics
Maximum Data Rate
Receiver Input to Output
Receiver Input to Output
Diff. Receiver Skew It
PLH
-t
PHL
I
Receiver Enable to
Output Low
Receiver Enable to
Output High
Receiver Disable from Low
Receiver Disable from High
SP481
Shutdown Timing
Time to Shutdown
Driver Enable from Shutdown
to Output High
Driver Enable from Shutdown
to Output Low
Receiver Enable from
Shutdown to Output High
Receiver Enable from
Shutdown to Output Low
POWER REQUIREMENTS
Supply Voltage
Supply Current
SP481/485
No Load
SP483
No Load
SP481/SP483
Shutdown Mode
ENVIRONMENTAL AND
MECHANICAL
Operating Temperature
Commercial (_C_)
Industrial (_E_)
Storage Temperature
Package
Plastic DIP (_S)
NSOIC (_N)
MIN.
TYP.
MAX.
UNITS
CONDITIONS
5
60
60
90
90
13
20
20
20
20
200
200
Mbps
ns
ns
ns
RE = 0V, DE = 0V
t
PLH
; R
DIFF
= 54Ω,
C
L1
= C
L2
= 100pF;
Figures 3 & 8
t
PHL
; R
DIFF
= 54Ω,
C
L1
= C
L2 =
100pF;
Figures 3 & 8
R
DIFF
= 54Ω; C
L1
= C
L2
= 100pF;
Figures 3 & 8
C
RL
= 15pF;
Figures 2 & 9;
S
1
closed
C
RL
= 15pF;
Figures 2 & 9;
S
2
closed
C
RL
= 15pF;
Figures 2 & 9;
S
1
closed
C
RL
= 15pF;
Figures 2 & 9;
S
2
closed
50
50
50
50
ns
ns
ns
ns
50
200
40
40
300
300
600
100
100
1000
1000
ns
ns
ns
ns
ns
RE = 5V, DE = 0V
C
L
= 100pF;
See figures 4 & 7;
S
2
closed
C
L
= 100pF;
See figures 4 & 7;
S
1
closed
C
L
= 15pF;
See figures 2 & 9;
S
2
closed
C
L
= 15pF;
See figures 2 & 9;
S
1
closed
+4.75
900
600
+5.25
Volts
µA
µA
µA
µA
RE, DI = 0V or V
CC
; DE = V
CC
RE = 0V, DI = 0V or 5V; DE = 0V
RE, DI = 0V or V
CC
; DE = V
CC
RE=0V, DI = 0V or 5V; DE = 0V
DE = 0V, RE=V
CC
10
µA
0
-40
-65
+70
+85
+150
°C
°C
°C
Rev. 07/28/04
SP481/483/485 Low Power Half-Duplex RS485 Transceivers
© Copyright 2002 Sipex Corporation
3
SIPEX [ SIPEX CORPORATION ]
