ADM1490EBRMZ Analog Devices Inc, ADM1490EBRMZ Datasheet - Page 4

• Manufacturer Part Number: ADM1490EBRMZ
• Description: 5V Full Duplex RS-485 Tranceiver I.C.
• Manufacturer: Analog Devices Inc
• Type: Transceiverr

Specifications of ADM1490EBRMZ

• Number Of Drivers/receivers: 1/1
• Protocol: RS422, RS485
• Voltage - Supply: 4.75 V ~ 5.25 V
• Mounting Type: Surface Mount
• Package / Case: 8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ADM1490E/ADM1491E
TIMING SPECIFICATIONS
T
Table 2.
Parameter
DRIVER
RECEIVER
Timing Diagrams
Switching Characteristics
V
V
A – B
A
+V
DIFF
–V
CC
RO
Maximum Data Rate
Propagation Delay
Driver Output Skew
Rise Time/Fall Time
Enable Time
Disable Time
Propagation Delay
Skew |t
Enable Time
Disable Time
0V
= −40°C to +85°C.
Y
Z
O
O
V
O
PLH
10% POINT
Figure 3. Driver Propagation Delay Rise/Fall Timing
1/2V
− t
Figure 4. Receiver Propagation Delay Timing
t
90% POINT
PLH
PHL
O
0V
|
t
DPLH
V
1.5V
t
CC
DR
/2
t
SKEW
V
DIFF
= |
= V
t
PLH
(Y)
V
–
CC
– V
t
PHL
/2
(Z)
|
Symbol
t
t
t
t
t
t
t
t
t
DPLH
SKEW
DR
ZH
HZ
PLH
SKEW
ZH
HZ
t
t
, t
DPHL
PHL
, t
, t
, t
, t
0V
, t
, t
DF
ZL
LZ
ZL
LZ
PHL
t
90% POINT
DPHL
DF
1.5V
10% POINT
Min
16
V
V
OH
OL
Rev. C | Page 4 of 16
Typ
11
0.5
8
12
0.4
Max
17
2
15
20
20
20
2
13
13
RO
RO
Y, Z
Y, Z
DE
RE
Unit
Mbps
ns
ns
ns
ns
ns
ns
ns
ns
ns
0V
0.5V
t
t
ZH
ZL
Test Conditions/Comments
R
R
t
R
R
R
C
C
R
R
0.5V
Figure 6. Receiver Enable/Disable Timing
t
t
SKEW
L
L
L
L
L
L
L
L
L
ZL
ZH
CC
Figure 5. Driver Enable/Disable Timing
= 54 Ω, C
= 54 Ω, C
= 54 Ω, C
= 110 Ω, C
= 110 Ω, C
= 1 kΩ, C
= 1 kΩ, C
= 15 pF, see Figure 25 and Figure 4
= 15 pF, see Figure 25 and Figure 4
CC
= |t
2.3V
2.3V
1.5V
1.5V
DPLH
L
L
L
L
L
OUTPUT HIGH
− t
OUTPUT LOW
= 15 pF, see Figure 26 and Figure 6
= 15 pF, see Figure 26 and Figure 6
= 100 pF, see Figure 23 and Figure 3
= 100 pF, see Figure 23 and Figure 3,
= 100 pF, see Figure 23 and Figure 3
L
L
= 50 pF, see Figure 24 and Figure 5
= 50 pF, see Figure 24 and Figure 5
DPHL
|
t
t
HZ
LZ
0.5V
t
t
LZ
HZ
0.5V
CC
V
V
OL
OH
CC
V
V
+ 0.5V
– 0.5V
OL
OH
+ 0.5V
– 0.5V
0.7V
0.3V
V
0V
V
V
0V
CC
CC
V
V
CC
OL
OH
OL
OH