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SP485R Fiches technique(PDF) 2 Page - Exar Corporation

No de pièce SP485R
Description  1/10th Unit Load RS-485 Transceiver
Download  9 Pages
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Fabricant  EXAR [Exar Corporation]
Site Internet  http://www.exar.com
Logo EXAR - Exar Corporation

SP485R Fiches technique(HTML) 2 Page - Exar Corporation

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Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com
SP485R_00_072309
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
CC.......................................................................+7V
Storage Temperature.......................-65˚C to +150˚C
ELECTRICAL CHARACTERISTICS
Typically 25ºC @ V
CC = +5V unless otherwise noted.
PARAMETERS
MIN.
TYP.
MAX.
UNITS CONDITIONS
LOGIC INPUTS
V
IL
0.8
Volts
V
IH
2.0
Volts
LOGIC OUTPUTS
V
OL
0.4
Volts
I
OUT = -3.2mA
V
OH
2.4
Volts
I
OUT = .0mA
RS-485 DRIVER DC Characteristics
Open Circuit Voltage
6.0
Volts
Differential Output Voltage
.5
5.0
Volts
R
L = 54Ω, CL = 50pF
Balance
+/-0.2
Volts
|V
T| - |VT|
Common-Mode Output
3.0
Volts
Output Current
28.0
mA
R
L = 54Ω
Short Circuit Current
+/-250
mA
Terminated in -7V to +2V
RS-485 DRIVER AC Characteristics
Maximum Data Rate
5
Mbps
R
L = 54Ω,
Output Transition Time
30
ns
Rise/fall time, 0% to 90%
Propagation Delay, t
PLH
60
00
ns
See Figures 4 & 6, R
DIFF = 54Ω,
C
L = CL2 = 00pF
Propagation Delay, t
PHL
60
00
ns
See Figures 4 & 6, R
DIFF = 54Ω,
C
L = CL2 = 00pF
Driver Output Skew
5
5
ns
see Figures 4 and 6,
t
SKEW = |tDPHL - tDPLH|
RS-485 RECEIVER DC Characteristics
Output Voltage Low, V
OL
0.4
Volts
Output Voltage High, V
OH
2.4
Volts
Tri-State Output Current
+/-
µA
0.4V ≤ V
OUT ≤ 2.4V; RE = Vcc
Power Dissipation
8-pin NSOIC.................................................000mW
JA = 62ºC/W)
8-pin PDIP....................................................000mW
JA = 62ºC/W)


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