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SP3490 датащи(PDF) 6 Page - Sipex Corporation

номер детали SP3490
подробное описание детали  3.3V Low Power Full Duplex RS-485 Transceivers with 10Mbps Data Rate
PDF  11 Pages
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производитель  SIPEX [Sipex Corporation]
домашняя страница  http://www.sipex.com
Logo SIPEX - Sipex Corporation

SP3490 датащи(HTML) 6 Page - Sipex Corporation

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Rev. 10/11/02
SP3490/3491 Low Power Full-Duplex RS485 Transceivers
© Copyright 2002 Sipex Corporation
6
Receiver Disable from HIGH
65
200
ns
Figures 7 and 12; S
2 closed, S1 open
POWER REQUIREMENTS
Supply Voltage
+3.0
+3.6
Volts
Supply Current
1000
2000
µA
REB, D = 0V or V
CC; DE = VCC
800
1500
µA
DE=0V
SPECIFICATIONS (continued)
T
AMB = TMIN to TMAX and VCC = +3.3V ± 5% unless otherwise noted.
PARAMETERS
MIN.
TYP.
MAX.
UNITS
CONDITIONS
SP3491 RECEIVER
DC Characteristics
Differential Input Threshold
-0.2
+0.2
Volts
-7V < V
CM < 12V
Input Hysteresis
25
mV
V
CM = 0V
Output Voltage HIGH
V
CC-0.4
Volts
I
O = -1.5mA, VID = +200mV
Output Voltage LOW
0.4
Volts
I
O = +2.5mA, VID = -200mV
Three State (high impedance)
Output Current
+1
µA
0V < V
O < VCC; REB = VCC
Input Resistance
12
15
kΩ
-7V < V
CM < 12V
Input Current (A, B); V
IN = 12V
1.0
mA
DE = 0V, V
CC = 0V or +3.6V, VIN = 12V
Input Current (A, B); V
IN = -7V
-0.8
mA
DE = 0V, V
CC = 0V or +3.6V, VIN = -7V
Short-Circuit Current
60
mA
0V < V
O < VCC
SP3491 RECEIVER
AC Characteristics
Maximum Data Rate
10
Mbps
REB = 0V, DE = V
CC
Receiver Input to Output, t
PLH
40
70
120
ns
Figures 6 & 11
85
ns
T
AMB = +25
oC, V
CC = +3.3V,
Figures 6 and 11
Receiver Input to Output, t
PHL
40
70
120
ns
Figures 6 & 11
85
ns
T
AMB = +25
oC, V
CC = +3.3V,
Figures 6 and 11
Differential Receiver Skew
4
ns
t
PHL(A) - tPLH(A) , tPHL(B) - tPLH(B) ,
Figures 6 & 11
Receiver Enable to Output LOW
65
150
ns
Figures 7 and 12; S
1 closed, S2 open
Receiver Enable to Output HIGH
65
150
ns
Figures 7 and 12; S
2 closed, S1 open
Receiver Disable from LOW
65
200
ns
Figures 7 and 12; S
1 closed, S2 open
Figure 12. Receiver Enable and Disable Waveforms
3V
0V
tPRLZ
1.5V
tPRZL
tPRSL
1.5V
1.5V
10%
VCC
REB
OUTPUT
S1 is closed
S2 is open
S3 = -1.5V
VOL
3V
0V
tPRHZ
1.5V
tPRZH
tPRSH
1.5V
1.5V
10%
0V
VOH
REB
OUTPUT
S1 is open
S2 is closed
S3 = 1.5V



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