SP3483 DS/04 SP3483 Low Power Slew Rate Limited Half-Duplex RS485 Transceivers Copyright 2000 Sipex Corporation
2
T
MIN
to T
MAX
and V
CC
= +3.3V
±
5% unless otherwise noted.
PARAMETERS
DRIVER
DC Characteristics
Differential Output Voltage
Differential Output Voltage
MIN.
TYP.
MAX.
UNITS
CONDITIONS
GND
2
V
CC
V
CC
Volts
Volts
Unloaded; R =
∞
; Figure 1
with load; R = 50
; (RS-422); Figure 1
Differential Output Voltage
Change in Magnitude of Driver
Differential Output Voltage for
Complimentary States
Driver Common-Mode
Output Voltage
Input High Voltage
Input Low Voltage
Input Current
Driver Short-Circuit Current
V
OUT
= HIGH
V
OUT
= LOW
DRIVER
AC Characteristics
Maximum Data Rate
1.5
V
CC
Volts
with load; R = 27
; (RS-485); Figure 1
0.2
Volts
R = 27
or R = 50
; Figure 1
3
Volts
Volts
Volts
μ
A
R = 27
or R = 50
; Figure 1
Applies to DE, DI, RE
Applies to DE, DI, RE
Applies to DE, DI, RE
2.0
0.8
±
10
±
250
±
250
mA
mA
-7V
≤
V
O
≤
+12V
-7V
≤
V
O
≤
+12V
250
kbps
RE = V
CC
, DE = V
CC
Driver Input to Output, t
PLH
400
900
1500
ns
Figures 2 and 8
Driver Input to Output, t
PHL
400
900
1500
ns
Figures 2 and 8
Differential Driver Skew
Driver Rise or Fall Time
Driver Enable to Output High
Driver Enable to Output Low
Driver Disable Time from Low
Driver Disable Time from High
RECEIVER
DC Characteristics
Differential Input Threshold
Input Hysteresis
Output Voltage High
Output Voltage Low
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
10
700
700
690
80
90
ns
ns
ns
ns
ns
ns
t
- t
Figures 2 and 9
From 10% to 90%
Figures 3 and
9
Figures 4 and 10
Figures 5 and 10
Figures 5 and 10
Figures 4 and 10
1000
1300
1300
120
120
-0.2
+0.2
Volts
mV
Volts
Volts
-7V
≤
V
CM
≤
+12V
V
CM
= 0V
V
ID
= +200mV, -1.5mA
V
ID
= -200mV, 2.5mA
20
V
CC
-0.4
0.4
+1
μ
A
k
mA
mA
mA
0V
≤
V
O
≤
V
; RE = V
CC
-7V
≤
V
≤
+12V
DE = 0V, V
CC
= 0V or 3.6V, V
IN
= 12V
DE = 0V, V
= 0V or 3.6V, V
IN
= -7V
0V
≤
V
CM
≤
V
CC
12
15
1.0
-0.8
60
7
ABSOLUTE MAXIMUM RATINGS
These are stress ratings only and functional operation of the device at
these ratings or any other above those indicated in the operation sections
of the specifications below is not implied. Exposure to absolute maximum
rating conditions for extended periods of time may affect reliability.
V
............................................................................................................+7V
Input Voltages
Logic........................................................-0.3V to (V
CC
+0.5V)
Drivers..................................................-0.3V to (V
+0.5V)
Receivers.................................................................
±
15V
Output Voltages
Logic........................................................-0.3V to (V
+0.5V)
Drivers......................................................................
±
15V
Receivers............................................-0.3V to (V
+0.5V)
Storage Temperature.......................................................-65C to +150C
Power Dissipation per package
8-pin NSOIC (derate 6.14mW/C above +70C).........................500mW
8-pin PDIP (derate 11.8mW/C above +70C)..........................1000mW
SPECIFICATIONS