MAX1480BCPI Maxim Integrated Products, MAX1480BCPI Datasheet - Page 17

• Manufacturer Part Number: MAX1480BCPI
• Description: RS-422/RS-485 Interface IC
• Manufacturer: Maxim Integrated Products

Specifications of MAX1480BCPI

• Data Rate: 250 Kbps
• Operating Supply Voltage: 5 V
• Supply Current: 95 mA
• Operating Temperature Range: 0 C to + 70 C
• Package / Case: PDIP-28
• Maximum Power Dissipation: 727 mW
• Mounting Style: Through Hole
• Supply Voltage (max): 5.5 V
• Lead Free Status / Rohs Status: No

Figure 13. Typical Half-Duplex RS-485/RS-422 Network
DE
RO
DI
OR EQUIVALENT
74HC86
RE
V
5V
IN
C1
22μF
RECEIVER OUTPUT
DRIVER ENABLE
DRIVER INPUT
RO
R
DE
______________________________________________________________________________________
0.1μF
A
C2
D
DI
B
R1
R2
R3
Complete, Isolated RS-485/RS-422
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
MAX845
A
ISOLATION BARRIER
MAX1480A/B/C
(ONE RESISTOR ON EACH END)
D
DI
B
TERMINATING RESISTOR
MAX1487
MAX487
28
27
16
26
25
24
23
22
21
20
19
18
17
15
A
AC1 (MAKE NO CONNECTION)
AC2 (MAKE NO CONNECTION)
ISO V
B
ISO RO DRV
ISO DI IN
ISO DE IN
ISO COM1
ISO DI DRV
ISO V
ISO DE DRV
ISO COM2
ISO RO LED
120Ω
100Ω
CC1
CC2
ISOLATED COMMON
A
B
R6
(ONE RESISTOR ON EACH END)
TERMINATING RESISTOR
Data Interface
R4
R5
R
RE
SH
B
A
D
120Ω
100Ω
NOTE: RESISTOR R7 PROTECTS
R7
DE
DI
RO
THE MAX1480A/B/C FROM
TRANSIENT CURRENTS
BETWEEN SHIELD AND
TRANSMISSION LINES.
SHIELD
(OPTIONAL)
17