zt490erep ywyn Corporation, zt490erep Datasheet - Page 2

• Manufacturer Part Number: zt490erep
• Description: Low Power 5v 250kbps/10mbps 128-fanout Rs485 Transceivers
• Manufacturer: ywyn Corporation

Absolute Maximum Ratings
These are stress ratings only and functional operation of
the device at these ratings or any other above those
indicated in the operation sections of the specifications is
not implied. Exposure to absolute maximum rating condi-
tions for extended periods of time may affect reliability.
Power Supply, (V
Input Voltages
DI, DE, RE (V
DI, DE, RE (V
Differential Input Voltage, (V
A, B (V
Output Voltages
RO ..................................................... –0.3V to (V
Y, Z (A & B on ZT485) ...................................... +12V to -7V
Operating Temperature ................................ –40°C to +85°C
Storage Temperature ................................. –65°C to +150°C
Power Dissipation Per Package
14-pin PDIP (derate 10.00mW/°C above +70°C) ........ 800mW
Zywyn Corporation
8-pin PDIP (derate 9.09mW/°C above +70°C) ........... 722mW
14-pin nSOIC (derate 8.33mW/°C above +70°C) ...... 667mW
8-pin nSOIC (derate 6.14mW/°C above +70°C) ........ 500mW
Zywyn
I
) .......................................................... +12V to -7V
IH
IL
), High Input Voltage .............. +2V to +6.0V
), Low Input Voltage ............... 0V to +0.8V
CC
) .................................. –0.3V to +6.0V
ID
) ..................... -12V to +12V
CC
+0.3V)
2
Storage Considerations
Storage in a low humidity environment is preferred. Large
high density plastic packages are moisture sensitive and
should be stored in Dry Vapor Barrier Bags. Prior to usage,
the parts should remain bagged and stored below 40°C
and 60%RH. If the parts are removed from the bag, they
should be used within 48 hours or stored in an environ-
ment at or below 20%RH. If the above conditions cannot
be followed, the parts should be baked for four hours at
125°C in order remove moisture prior to soldering. Zywyn
ships product in Dry Vapor Barrier Bags with a humidity
indicator card and desiccant pack. The humidity indicator
should be below 30%RH.
The information furnished by Zywyn has been carefully
reviewed for accuracy and reliability. Its application or
use, however, is solely the responsibility of the user. No
responsibility of the use of this information become part of
the terms and conditions of any subsequent sales agree-
ment with Zywyn. Specifications are subject to change
without the responsibility for any infringement of patents
or other rights of third parties which may result from its
use. No license or proprietary rights are granted by impli-
cation or otherwise under any patent or patent rights of
Zywyn Corporation.
Specifications subject to change without notice
February 2005
ZT4xxER
rev.1.2