SP483 SIPEX [Sipex Corporation], SP483 Datasheet - Page 4

• Manufacturer Part Number: SP483
• Description: Low Power Half-Duplex RS-485 Transceivers
• Manufacturer: SIPEX [Sipex Corporation]

SP483 AC SPECIFICATIONS
T
Rev. 07/16/02
MIN
PARAMETERS
SP483 DRIVER
AC Characteristics
Maximum Data Rate
Driver Input to Output
Driver Skew
Driver Rise and Fall Time
Driver Enable to Output High
Driver Enable to Output Low
Driver Disable Time from Low
Driver Disable Time from High
SP483 RECEIVER
AC Characteristics
Maximum Data Rate
Receiver Input to Output
Diff. Receiver Skew It
Receiver Enable to
Output Low
Receiver Enable to
Output High
Receiver Disable from Low
Receiver Disable from High
SP483
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
to T
MAX
and V
RO 1
RE 2
DE 3
DI 4
CC
= 5V ± 5% unless otherwise noted.
SP481, SP483, SP485
Pinout (Top View)
Top View
D
PLH
R
-t
SP485
PHL
I
SP481/483/485 Low Power Half-Duplex RS485 Transceivers
MIN.
250
250
250
250
250
250
300
300
250
250
50
8
7
6
5
V
B
A
GND
CC
TYP.
800
800
100
100
200
20
20
20
20
MAX.
2000
2000
2000
2000
2000
3000
3000
2000
2000
2000
2500
2500
800
600
4
50
50
50
50
PIN FUNCTION
Pin# Name
1
2
3
4
5
6
7
8
UNITS
kbps
kbps
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
GND
Vcc
RO
RE
DE
DI
A
B
CONDITIONS
see figures 3 & 6
t
see figures 3 & 6
see figures 3 & 6,
t
From 10% to 90%; R
C
C
C
C
C
Figures 3 & 8
R
Figures 3 & 8
C
C
C
C
RE = 5V, DE = 0V
C
C
C
t
t
C
PLH
PHL
SKEW
PLH
RL
RL
RL
RL
L1
L
L
L
L
DIFF
L
L
L
L
Receiver Output Enable
Driver Input.
Driver Output Enable
Positive Supply 4.75V<Vcc< 5.25V.
Ground Connection.
Driver Output/Receiver Input
Driver Output/Receiver Input
Receiver Output.
= 100pF; See figures 4 & 7; S
= 100pF; See figures 4 & 7; S
= 15pF; See figures 4 & 7; S
= 15pF; See figures 4 & 7; S
= 100pF; See figures 4 & 7; S
= 100pF; See figures 4 & 7; S
= 15pF; See figures 4 & 7; S
= 15pF; See figures 4 & 7; S
= 15pF; Figures 2 & 9; S
= 15pF; Figures 2 & 9; S
= 15pF; Figures 2 & 9; S
= 15pF; Figures 2 & 9; S
Active LOW.
Active HIGH.
Non-inverting.
Inverting.
; R
; R
; R
= C
Description
= |t
= 54Ω, C
DIFF
DIFF
DIFF
L2
DPLH
= 100pF,
= 54Ω, C
= 54Ω, C
= 54Ω, C
- t
© Copyright 2002 Sipex Corporation
DPHL
L1
= C
|
see figures 3 & 6
L1
L1
L1
L2
DIFF
= C
= C
= C
= 100pF;
1
2
1
2
closed
closed
closed
closed
= 54Ω,
L2
L2
L2
=
=
= 100pF;
100pF;
100pF;
1
2
2
1
2
1
2
1
closed
closed
closed
closed
closed
closed
closed
closed