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SP1485ECN-L/TR 데이터시트(PDF) 4 Page - Exar Corporation

부품명 SP1485ECN-L/TR
상세설명  Enhanced Low Power Half-Duplex RS-485 Transceivers
PDF  10 Pages
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제조업체  EXAR [Exar Corporation]
홈페이지  http://www.exar.com
Logo EXAR - Exar Corporation

SP1485ECN-L/TR 데이터시트(HTML) 4 Page - Exar Corporation

  SP1485ECN-L/TR Datasheet HTML 1Page - Exar Corporation SP1485ECN-L/TR Datasheet HTML 2Page - Exar Corporation SP1485ECN-L/TR Datasheet HTML 3Page - Exar Corporation SP1485ECN-L/TR Datasheet HTML 4Page - Exar Corporation SP1485ECN-L/TR Datasheet HTML 5Page - Exar Corporation SP1485ECN-L/TR Datasheet HTML 6Page - Exar Corporation SP1485ECN-L/TR Datasheet HTML 7Page - Exar Corporation SP1485ECN-L/TR Datasheet HTML 8Page - Exar Corporation SP1485ECN-L/TR Datasheet HTML 9Page - Exar Corporation Next Button
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Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com
SP48E-485E_00_06609
4
pin FUnction
Pin1–RO–ReceiverOutput.
Pin2–RE–ReceiverOutputEnableActiveLOW.
Pin3–DE–DriverOutputEnableActiveHIGH.
Pin4–DI–DriverInput.
Pin5–GND–GroundConnection.
Pin6–A–DriverOutput/ReceiverInputNon-inverting.
Pin7–B–DriverOutput/ReceiverInputInverting.
Pin8–Vcc–PositiveSupply4.75V<Vcc<5.25V.
SP48E and SP485E
Pinout(TopView)
RO 1
RE 2
DE 3
DI 4
8 VCC
7 B
6 A
5 GND
D
R
SP485
Top View
Figure5.DriverPropagationDelays
+3V
0V
DI
B
A
DRIVER
OUTPUT
VO+
DIFFERENTIAL
OUTPUT
VA – VB
0V
VO–
tSKEW
tSKEW
1.5V
1.5V
tPLH
tPLH
tR
tF
f = 1MHz; tR < 1ns; tF < 1ns
VO 1/2VO
1/2VO
tPHL
Figure1.RS-485DriverDCTestLoadCircuit
Figure3.RS-485Driver/ReceiverTimingTestCircuit
CL1
15pF
RO
A
B
A
B
DI
DE
3V
CL2
RDIFF
500
CL
Output
Under
Test
S1
S2
VCC
1K
1K
CRL
Receiver
Output
S1
S2
Test Point
VCC
Figure2.ReceiverTimingTestLoadCircuit
Figure4.RS-485DriverTimingTestLoad#2Circuit
A
B
R
R
VOD
VOC



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