SP490E Просмотр технического описания (PDF) - Signal Processing Technologies
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SP490E Datasheet PDF : 12 Pages
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SPECIFICATIONS (continued)
T
MIN
to
T
MAX
and
V
CC
=
5V
±
5%
unless
otherwise
noted.
PARAMETERS
MIN.
SP490E RECEIVER
AC Characteristics
Maximum Data Rate
10
Receiver Input to Output
20
Receiver Input to Output
20
Diff. Receiver Skew ItPLH-tPHLI
TYP.
45
45
13
POWER REQUIREMENTS
Supply Voltage
Supply Current
+4.75
900
ENVIRONMENTAL AND
MECHANICAL
Operating Temperature
Commercial (_C_)
0
Industrial (_E_)
-40
Storage Temperature
-65
Package
Plastic DIP (_P)
NSOIC (_N)
MAX. UNITS CONDITIONS
Mbps
100 ns
100 ns
ns
tPLH; RDIFF = 54Ω,
CL1 = CL2 = 100pF; Figures 3 & 7
tPHL; RDIFF = 54Ω,
CL1 = CL2 = 100pF; Figures 3 & 7
RDIFF = 54Ω; CL1 = CL2 = 100pF;
Figures 3 & 7
+5.25 Volts
µA
+70 °C
+85 °C
+150 °C
A
R
VOD
B
R VOC
Figure 1. Driver DC Test Load Circuit
3V
DE
DI
CL1
A
RDIFF
B
CL2
A
RO
B
15pF
Receiver
Output
Test Point
1k
S1
CRL
1k
S2
VCC
Figure 2. Receiver Timing Test Load Circuit
Output
500
Under
Test CL
S1
VCC
S2
Figure 3. Driver/Receiver Timing Test Circuit
Figure 4. Driver Timing Test Load #2 Circuit
SP490EDS/14
SP490E Enhanced Full Duplex RS-485 Transceivers
3
© Copyright 2000 Sipex Corporation
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