MAX1490EBCPG+ Maxim Integrated Products, MAX1490EBCPG+ Datasheet - Page 8

• Manufacturer Part Number: MAX1490EBCPG+
• Description: IC RS485/RS422 DATA INTRFC 24DIP
• Manufacturer: Maxim Integrated Products
• Type: Transceiverr

Specifications of MAX1490EBCPG+

• Number Of Drivers/receivers: 1/1
• Protocol: RS422, RS485
• Voltage - Supply: 4.5 V ~ 5.5 V
• Mounting Type: Through Hole
• Package / Case: 24-DIP (0.600", 15.24mm)
• Data Rate: 250 Kbps
• Operating Supply Voltage: 5 V
• Supply Current: 130 mA
• Operating Temperature Range: 0 C to + 70 C
• Maximum Power Dissipation: 696 mW
• Mounting Style: Through Hole
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

±15kV ESD-Protected, Isolated RS-485/RS-422
Data Interfaces
________________________________________________________________Pin Description
8
MAX1480EA/
MAX1480EC
1, 2, 8, 10
_______________________________________________________________________________________
3, 4
11
12
13
14
15
16
17
18
19
20
—
5
6
7
9
PIN
MAX1490EA/
MAX1490EB
1, 2, 8, 10
3, 4
11
12
13
14
15
16
—
—
—
—
—
5
6
7
9
ISO RO LED
ISO DE DRV
ISO DI DRV
V
ISO COM2
ISO COM1
ISO V
CC1
D1, D2
NAME
GND1
GND2
V
RO
RO
SD
DE
FS
CC5
DI
–V
CC2
CC4
Logic-Side (Nonisolated Side) +5V Supply Voltages
Internal Connections. Leave these pins unconnected.
Logic-Side Ground. Connect to GND2 (pin 12).
Frequency Select Input. If FS = V
= GND, switch frequency is low. For optimal performance and minimal supply
current, connect FS to V
Shutdown Input. Ground for normal operation. When high, the power oscillator is
disabled.
Driver Input. With DE
output A low and output B high. Similarly, a high on DI
output B low. Drives internal LED cathode through a resistor (see Table 1 for
MAX1480EA/MAX1480EC, Table 2 for MAX1490EA/MAX1490EB).
Driver-Enable Input. The driver outputs, A and B, are enabled by bringing DE
high. The driver outputs are high impedance when DE
puts are enabled, the device functions as a line driver. While the driver outputs
are high impedance, the device functions as a line receiver. Drives internal
LED cathode through a resistor (Table 1).
Receiver Output. If A > B by 200mV, RO is high; if A < B by 200mV, RO is low.
Open collector; must have pullup to V
Logic-Side Ground. Connect to GND1 (pin 5).
Receiver Output. If A > B by 200mV, RO is low; if A < B by 200mV, RO is high.
Open collector; must have pullup to V
Logic-Side (Nonisolated Side) +5V Supply Voltage
Isolated Receiver Output LED. Internal LED anode in MAX1480EA/MAX1480EC and
LED cathode in MAX1490EA/MAX1490EB. Connect to ISO RO DRV through a resis-
tor (Table 1 for MAX1480EA/MAX1480EC; Table 2 for MAX1490EA/MAX1490EB).
Isolated Common. Connect to ISO COM1 (pin 20).
Isolated Driver-Enable Drive. The driver outputs, A and B, are enabled by bringing
DE
outputs are enabled, the device functions as a line driver. While the driver outputs
are high impedance, the device functions as a line receiver. Open-collector out-
put; must have pullup to ISO VCC_ and be connected to ISO DE IN for normal
operation (Table 1).
Isolated Supply Voltage. Connect to ISO V
MAX1480EC, or pin 22 for MAX1490EA/MAX1490EB).
Isolated Driver-Input Drive. With DE
DI
high and output B low. Connect to ISO DI IN (on the MAX1480EA/MAX1480EC only)
for normal operation. Open-collector output; connect a pullup resistor to ISO V
(Table 1 for MAX1480EA/MAX1480EC, Table 2 for MAX1490EA/MAX1490EB).
Isolated Common. For MAX1480EA/MAX1480EC, connect to ISO COM2 (pin
16) (Figures 1 and 2).
´
´
forces output A low and output B high. Similarly, a high on DI
high. The driver outputs are high impedance when DE
´
high (MAX1480EA/MAX1480EC only), a low on DI
CC_
or leave unconnected.
CC_
´
FUNCTION
high (MAX1480EA/MAX1480EC only), a low on
or is open, switch frequency is high; if FS
CC
CC
(Table 2).
(Table 1).
CC1
(pin 26 for MAX1480EA/
´
forces output A high and
´
is low. If the driver out-
´
is low. If the driver
´
forces output A
´
forces
CC_
´