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LT1796 Datasheet(PDF) 1 Page - Linear Technology

Part No. LT1796
Description  Overvoltage Fault Protected CAN Transceiver
Download  8 Pages
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Maker  LINER [Linear Technology]
Homepage  http://www.linear.com
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LT1796 Datasheet(HTML) 1 Page - Linear Technology

   
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1
LT1796
1796f
FEATURES
DESCRIPTIO
APPLICATIO S
TYPICAL APPLICATIO
Overvoltage Fault Protected
CAN Transceiver
s
Protected from Overvoltage Line Faults to
±60V
s
ESD Protection to IEC-1000-4-2 Level 4
±15kV Air Gap Test
±8kV Contact Mode Test
s
ISO 11898 Compatible
s
High Input Impedance Supports Up to 256 Nodes
s
Controlled Slew Rates for EMI Emissions Control
s
High Impedance Outputs When Off or
Powered Down
s
Short-Circuit Protection On All Outputs
s
Thermal Shutdown Protection
s
Pin Compatible with Philips PCA82C251
s
Industrial Control Data Networks
s
Automotive Systems
s
HVAC Controls
, LTC and LT are registered trademarks of Linear Technology Corporation.
The LT
®1796 CAN transceiver provides built-in fault toler-
ance to survive in industrial and automotive environ-
ments. Discrete protection devices are not needed. Bus
interface pins can withstand voltage faults up to
±60Vwith
respect to ground with no damage to the device. Faults
may occur while the transceiver is active, shut down or
powered off. On-chip ESD protection withstands up to
±15kV air discharges and ±8kV contact mode discharges
tested per IEC-1000-4-2. Loss of power or ground con-
nections does not damage the IC.
The circuit operates with data rates up to 125kbaud. A slew
control pin allows control of transmitted data pulse edges
to control EMI and reflection problems on imperfectly
terminated lines. High output current drive allows the use
of inexpensive PVC cable with impedance as low as 72
Ω.
The 100k
Ω input impedance allows up to 256 transceivers
per data network.
The LT1796 is available in 8-lead PDIP and SO packages.
Fault Protected CAN Bus Network
RT
120
1796 TA01
RT
120
D
LT1796
TXD
5V
RXD
VREF
RS
GND
R
0.1
µF
7
1
4
6
5
28
D
LT1796
TXD
5V
RXD
VREF
RS
GND
R
0.1
µF
7
1
4
6
5
2
8
125kbps CANH and CANL Driver Output
CANH-CANL
2V/DIV
CANH
2V/DIV
CANL
2V/DIV
TXD IN
5V/DIV
5V/DIV
1796 TA02


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