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MAX3442EESA+

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P19
MAX3440E–MAX3444E
±15kV ESD-Protected, ±60V Fault-Protected,
10Mbps, Fail-Safe RS-485/J1708 Transceivers
_______________________________________________________________________________________ 7
V
CC
D
V
OD
V
OC
2
R
L
2
R
L
DI
A
B
Figure 1. Driver V
OD
and V
OC
R
RO
0
V
OH
I
OH
(-)
I
OL
(+)
V
OL
V
ID
A
B
Figure 2. Receiver V
OH
and V
OL
V
CC
V
OM
3V
0
V
OH
V
OM
V
OM
V
OM
V
OM
V
OL
V
OH
V
OL
50Ω
R
L
C
L
= 50pF
(NOTE 5)
GENERATOR
(NOTE 4)
D
DI
t
PLHA
1.5V
A
B
OUT
S1
DI
1.5V
t
PHLA
t
PHLB
t
PLHB
≈ 1.5V
V
OH
+ V
OL
2
V
OM
=
A
B
2
Test Circuits and Waveforms
V
CC
50Ω
R
L
C
L
= 50pF (NOTE 5)
GENERATOR
(NOTE 4)
D
DI
OUT
C
L
C
L
t
DPLH
t
DPHL
t
LH
50%
1.5V
10%
(A–B)
DI
90%
50%
1.5V
10%
90%
3V
0
≈ 2.0V
t
HL
≈ -2.0V
A
B
Figure 4. Driver Differential Output Delay and Transition Times
Figure 3. Driver Propagation Times
MAX3440E–MAX3444E
±15kV ESD-Protected, ±60V Fault-Protected,
10Mbps, Fail-Safe RS-485/J1708 Transceivers
8 _______________________________________________________________________________________
50Ω
GENERATOR
(NOTE 4)
C
L
= 20pF
(NOTE 5)
V
ID
R
R
O
t
RPLH
1.0V
RO
1.0V
0
(A–B)
1.0V
2.0V
0
t
RPHL
V
CC
V
OM
V
OM
0
A
B
A, B
DE
V
CC
3V
0
V
CC
V
OL
V
OM
t
PDLS
1.5V
0.25V
1.5V
t
PDLZ
50Ω
GENERATOR
(NOTE 4)
D0 OR 3V
A, B
S1
C
L
= 50pF
(NOTE 5)
R
L
= 500Ω
DI
DE
A
B
t
PDZL
Figure 6. Driver Enable and Disable Times
Figure 7. Receiver Propagation Delay
Test Circuits and Waveforms (continued)
50Ω
GENERATOR
(NOTE 4)
≈ 1.5V
V
OH
+ V
OL
2
V
OM
=
3V
0
V
OH
V
OM
0
D0 OR 3V
t
PDHS
t
PDHZ
1.5V
0.25V
A, B
A, B
S1
DE
1.5V
C
L
= 50pF
(NOTE 5)
R
L
= 500Ω
DI
A
B
DE
t
PDZH
Figure 5. Driver Enable and Disable Times
MAX3440E–MAX3444E
50Ω
GENERATOR
(NOTE 4)
C
L
= 20pF
(NOTE 5)
V
CC
3V
0
V
CC
V
OL
R
1.5V
-1.5V
V
ID
1.5V
RO
S1
S2
1kΩ
RE
1.5V
S1 CLOSED
S2 OPEN
V
S3
= -1.5V
t
RPZL
t
RPSL
3V
0
V
OH
0
1.5V
RE
1.5V
S1 OPEN
S2 CLOSED
V
S3
= 1.5V
t
RPZH
t
RPSH
t
RPWAKE
3V
0
V
CC
V
OL
0.5V
RO
RE
1.5V
S1 CLOSED
S2 OPEN
V
S3
= -1.5V
t
RPLZ
3V
0
V
OH
0
0.5V
1.5V
RO
RE
S1 OPEN
S2 CLOSED
V
S3
= 1.5V
t
RPHZ
S3
R
O
A
B
RO
Figure 8. Receiver Enable and Disable Times
Test Circuits and Waveforms (continued)
Note 4: The input pulse is supplied by a generator with the following characteristics: f = 5MHz, 50% duty cycle; tr ≤ 6ns; Z
0
= 50Ω.
Note 5: C
L
includes probe and stray capacitance.
±15kV ESD-Protected, ±60V Fault-Protected,
10Mbps, Fail-Safe RS-485/J1708 Transceivers
_______________________________________________________________________________________ 9
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P19

MAX3442EESA+

Mfr. #:
Buy MAX3442EESA+
Manufacturer:
Maxim Integrated
Description:
RS-485 Interface IC 10Mbps Fail-Safe RS-485/J1708 Tcvr
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
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