sp485een-tr Exar Corporation, sp485een-tr Datasheet - Page 2

• Manufacturer Part Number: sp485een-tr
• Description: Sp485e -enhanced Low Emi Half-duplex Rs-485 Transceiver
• Manufacturer: Exar Corporation

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
Input Voltages
May11-2007
T
CC
MIN
..........................................................................................................+7V
PARAMETERS
SP481E/SP485E DRIVER
DC Characteristics
Differential Output Voltage
Differential Output Voltage
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
SP481E/SP485E DRIVER
AC Characteristics
Maximum Data Rate
Driver Input to Output
Driver Input to Output
(SP485EMN ONLY)
Driver Input to Output
Driver Input to Output
(SP485EMN ONLY)
Driver Skew
Driver Rise or Fall Time
Driver Enable to Output High
closed
Driver Enable to Output Low
closed
Driver Disable Time from Low
closed
Driver Disable Time from High
closed
to T
V
V
OUT
OUT
MAX
Logic........................................................-0.3V to (V
Drivers..................................................-0.3V to (V
Receivers................................................................. ±15V
= HIGH
= LOW
and V
CC
= 5V ± 5% unless otherwise noted.
GND
MIN.
1.5
2.0
10
20
20
20
20
2
3
SP481E Low Power Half-Duplex RS485 Transceivers
TYP.
CC
30
30
30
30
15
40
40
40
40
CC
5
+0.5V)
+0.5V)
MAX.
±250
±250
V
V
V
±10
2
0.2
0.8
60
80
60
80
10
40
70
70
70
70
3
CC
CC
CC
Output Voltages
Storage Temperature.......................................................-65˚C to +150˚C
Power Dissipation per Package
8-pin NSOIC (derate 6.60mW/
8-pin PDIP (derate 11.8mW/
UNITS
Volts
Volts
Volts
Volts
Volts
Volts
Volts
µA
mA
mA
Mbps
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ELECTRICAL CHARACTERISTICS
Logic........................................................-0.3V to (V
Drivers...................................................................... ±15V
Receivers............................................-0.3V to (V
CONDITIONS
Unloaded; R = ∞ ; see Figure 1
with load; R = 50Ω; (RS-422);
see Figure 1
with load; R = 27Ω; (RS-485); see Figure 1
R = 27Ω or R = 50Ω; see Figure 1
R = 27Ω or R = 50Ω; see Figure 1
Applies to DE, DI, RE
Applies to DE, DI, RE
Applies to DE, DI, RE
-7V ≤ V
-7V ≤ V
RE = 5V, DE = 5V; R
C
t
see Figures 3 and 5
t
See Figures 3 and 5
t
see Figures 3 and 5
t
see Figures 3 and 5
see Figures 3 and 5,
t
From 10% to 90%; R
C
C
C
C
C
PLH
PHL
PHL
PLH
SKEW
L1
L1
L
L
L
L
= 100pF; see Figures 4 & 6; S
= 100pF; see Figures 4 & 6; S
= 100pF; see Figures 4 & 6; S
= 100pF; see Figures 4 & 6; S
; R
; R
; R
; R
= C
= C
= | t
DIFF
DIFF
DIFF
DIFF
o
O
O
L2
L2
C above +70
o
C above +70
≤ +12V
≤ +12V
DPLH
= 100pF
= 54Ω, C
= 54Ω, C
= 54Ω, C
= 100pF; s ee Figures 3 & 6
= 54Ω, C
© 2007 Sipex Corporation
- t
DPHL
o
C)............................1000mW
L1
L1
L1
o
C)...........................550mW
LI
= C
= C
= C
DIFF
DIFF
|
= C
L2
L2
L2
= 54Ω,
L2
= 54Ω,
= 100pF;
= 100pF;
= 100pF;
= 100pF;
CC
CC
+0.5V)
+0.5V)
2
1
1
2