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MAX13487EESA+T

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P17
MAX13487E/MAX13488E
Half-Duplex RS-485-/RS-422-Compatible
Transceiver with AutoDirection Control
_______________________________________________________________________________________
7
Typical Operating Characteristics (continued)
(V
CC
= +5.0V, T
A
= +25°C, unless otherwise noted.)
RECEIVER PROPAGATION vs. TEMPERATURE
(MAX13488E)
MAX13487Etoc16
TEMPERATURE (°C)
RECEIVER PROPAGATION (ns)
603510-15
10
20
30
40
0
-40 85
t
RPLH
t
RPHL
DRIVER PROPAGATION (500kbps)
(MAX13487E)
MAX13487Etoc17
DI
2V/div
A-B
5V/div
400ns/div
DRIVER PROPAGATION (16Mbps)
(MAX13488E)
MAX13487Etoc18
DI
2V/div
A-B
5V/div
10ns/div
WAVEFORM INTENSITY: 68%
RECEIVER PROPAGATION (16Mbps)
(MAX13488E)
MAX13487Etoc19
B
2V/div
RO
2V/div
A
2V/div
10ns/div
DRIVING 16nF (19.2kbps)
(MAX13487E)
MAX13487Etoc20
DI
2V/div
A-B
5V/div
10μs/div
DRIVING 16nF (19.2kbps)
(MAX13488E)
MAX13487Etoc21
DI
2V/div
A-B
5V/div
10μs/div
DRIVING 16nF (750kbps)
(MAX13488E)
MAX13487Etoc22
DI
2V/div
A-B
5V/div
400ns/div
MAX13487E/MAX13488E
Half-Duplex RS-485-/RS-422-Compatible
Transceiver with AutoDirection Control
8 _______________________________________________________________________________________
V
OD
C
L
R
DIFF
2
R
DIFF
2
V
OC
A
B
Figure 1. Driver DC Test Load
A
B
DI
R
L
V
ID
R
L
V
CC
GND
C
L
Figure 2. Driver-Timing Test Circuit
1.5V
1.5V
0
DI
B
A
t
DPLH
t
DPHL
1/2 V
O
1/2 V
O
V
O
t
DDD
, t
RED
RO
(RO PULLED LOW)
10%
90%
10%
90%
0
V
O
O
-V
O
V
DIFF
V
DIFF
= V(A) - V(B)
t
HL
t
LH
f = 1MHz, t
LH
≤ 3ns, t
HL
≤ 3ns
V
CC
RE = V
CC
Figure 3. Driver Propagation Delays
Test Circuits and Waveforms
MAX13487E/MAX13488E
Half-Duplex RS-485-/RS-422-Compatible
Transceiver with AutoDirection Control
_______________________________________________________________________________________ 9
t
DZH(SHDN)
t
DZL(SHDN)
1.5V
2.3V
2.3V
OUTPUT NORMALLY HIGH
OUTPUT NORMALLY LOW
V
CC
V
CC
C
L
S
1
S
2
0
A, B
0
A, B
V
OL
SHDN
500Ω
OUTPUT
UNDER TEST
Figure 4. Driver Enable and Disable Times
V
ID
A
B
R
RECEIVER
OUTPUT
ATE
Figure 5. Receiver-Propagation-Delay Test Circuit
1.5V
1.5V
1V
-1V
f = 1MHz, t
LH
≤ 3ns, t
HL
≤ 3ns
t
RPHL
t
RSKEW
=
|
t
RPHL
- t
RPLH |
t
RPLH
V
OH
V
OL
RO
A
B
Figure 6. Receiver Propagation Delays
Test Circuits and Waveforms (continued)
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P17

MAX13487EESA+T

Mfr. #:
Buy MAX13487EESA+T
Manufacturer:
Maxim Integrated
Description:
RS-422/RS-485 Interface IC Half-Dplx RS-485/422 5V 500ksps LD/Rc
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
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