MAX253CSA Maxim Integrated Products, MAX253CSA Datasheet - Page 5

• Manufacturer Part Number: MAX253CSA
• Description: IC XFRMR DRIVER RS485 8-SOIC
• Manufacturer: Maxim Integrated Products
• Type: Driverr

Specifications of MAX253CSA

• Number Of Drivers/receivers: 1/0
• Protocol: RS232, RS485
• Voltage - Supply: 4.5 V ~ 5.5 V
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Maximum Operating Temperature: + 70 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: 0 C
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

__________________Pin Configuration
TOP VIEW
GND1
D1
SD
FS
_______________________________________________________________________________________
1
2
3
4
DIP/SO/μMAX
+
MAX253
8
7
6
5
D2
GND2
V
N.C.
CC
Isolated RS-485 Interface
_____________________Pin Description
PIN
Transformer Driver for
1
2
3
4
5
6
7
8
NAME
GND1
GND2
N.C.
V
SD
D1
FS
D2
CC
Open drain of N-channel transformer drive 1.
Ground. Connect both GND1 and GND2
to ground.
Frequency switch. If FS = V
switch frequency = 350kHz; if V
switch frequency = 200kHz.
Shutdown. Ground for normal operation,
connect high for shutdown.
Not internally connected.
5V supply voltage.
Ground. Connect both GND1 and GND2
to ground.
Open drain of N-channel transformer drive 2.
FUNCTION
CC
or open,
FS
= 0V,
5