MAX1490EACPG Maxim Integrated, MAX1490EACPG Datasheet - Page 16

• Manufacturer Part Number: MAX1490EACPG
• Description: RS-422/RS-485 Interface IC
• Manufacturer: Maxim Integrated

Specifications of MAX1490EACPG

• Data Rate: 2.5 Mbps
• Operating Supply Voltage: 5 V
• Supply Current: 180 mA
• Operating Temperature Range: 0 C to + 70 C
• Mounting Style: Through Hole
• Package / Case: PDIP-24
• Maximum Power Dissipation: 696 mW

±15kV ESD-Protected, Isolated RS-485/RS-422
Data Interfaces
Figure 15. Typical Half-Duplex RS-485/RS-422 Network
16
DE
RO
DI
______________________________________________________________________________________
OR EQUIVALENT
74HC86
+5V
RE
V
IN
C1
22µF
RECEIVER OUTPUT
DRIVER ENABLE
DRIVER INPUT
RO
R
DE
A
C2
0.1µF
D
DI
B
R1
R2
R3
RE
LOGIC GROUND
GND1
GND2
V
V
V
V
V
CC1
CC2
CC3
CC4
CC5
SD
RO
D1
D2
FS
DE
DI
RO
10
11
12
13
14
1
2
3
4
5
6
7
8
9
R
DE
MAX845E
ISOLATION BARRIER
A
(ONE RESISTOR ON EACH END)
MAX1480EA/
MAX1480EC
D
DI
B
TERMINATING RESISTOR
MAX1487E
MAX487E
270pF
4kV
28
27
16
26
25
24
23
22
21
20
19
18
17
15
AC1 (MAKE NO CONNECTION)
AC2 (MAKE NO CONNECTION)
ISO RO DRV
A
ISO DE IN
ISO COM1
ISO DI DRV
ISO DE DRV
ISO COM2
ISO RO LED
ISO V
B
ISO DI IN
ISO V
100Ω
120Ω
CC1
CC2
ISOLATED COMMON
A
B
R6
(ONE RESISTOR ON EACH END)
TERMINATING RESISTOR
R4
R5
R
RE
SH
B
A
D
120Ω
100Ω
R7
DE
DI
RO
NOTE: RESISTOR R7 PROTECTS
THE MAX1480EA/MAX1480EC
FROM TRANSIENT CURRENTS
BETWEEN SHIELD AND
TRANSMISSION LINES.
SHIELD
(OPTIONAL)