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LT1796CN8#PBF

P1-P3P4-P6P7-P9P10-P10
LT1796
1
1796fa
For more information www.linear.com/LT1796
Typical applicaTion
FeaTures DescripTion
Overvoltage Fault Protected
CAN Transceiver
The LT
®
1796 CAN transceiver provides built-in fault toler-
ance to survive in industrial and automotive environments.
Discrete protection devices are not needed.
Bus interface
pins can withstand voltage faults up to ±60V with respect
to ground with no damage to the device. Faults may oc
-
cur 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 connections 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 imper
-
fectly terminated lines. High output current drive allows
the use of inexpensive P
VC cable with impedance as low
as
72Ω. The 100kΩ input impedance allows up to 256
transceivers per data network.
The LT1796 is available in 8-lead PDIP and SO packages.
applicaTions
n
Protected from Overvoltage Line Faults to ±60V
n
ESD Protection to IEC-1000-4-2 Level 4
±15kV Air Gap Test
±8kV Contact Mode Test
n
ISO 11898 Compatible
n
High Input Impedance Supports Up to 256 Nodes
n
Controlled Slew Rates for EMI Emissions Control
n
High Impedance Outputs When Off or
Powered Down
n
Short-Circuit Protection On All Outputs
n
Thermal Shutdown Protection
n
Pin Compatible with Philips PCA82C251
n
Industrial Control Data Networks
n
Automotive Systems
n
HVAC Controls
L, LT , LT C, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
Fault Protected CAN Bus Network
R
T
120Ω
1796 TA01
R
T
120Ω
LT1796
TXD
5V
RXD
V
REF
R
S
GND
R
0.1µF
7
1
4
6
5
2 8
D
LT1796
TXD
5V
RXD
V
REF
R
S
GND
R
0.1µF
7
1
4
6
5
28
D
125kbps CANH and CANL Driver Output
5V/DIV
CANH-CANL
2V/DIV
CANH
2V/DIV
TXD IN
5V/DIV
CANH
2V/DIV
1796 TA02
LT1796
2
1796fa
For more information www.linear.com/LT1796
pin conFiguraTionabsoluTe MaxiMuM raTings
Supply Voltage (V
CC
) ............................................... 44V
R
S
Slope Control Input Voltage ................. – 0.3V to 44V
V
REF
Reference Output Pin .......................... –0.3V to 7V
Driver Input Voltage .................................. –0.3V to 44V
CANH, CANL Data Line Pins....................... –80V to 80V
Receiver Output Voltages ............................. –0.3V to 7V
Operating Temperature Range
LT1796C................................................... 0°C to 70°C
LT1796I ............................................... – 40°C to 85°C
Storage Temperature Range ..................– 65°C to 150°C
Lead Temperature (Soldering, 10 sec) ................... 300°C
(Note 1)
1
2
3
4
8
7
6
5
TOP VIEW
R
S
CANH
CANL
V
REF
TXD
GND
V
CC
RXD
S8 PACKAGE
8-LEAD PLASTIC SO
N8 PACKAGE
8-LEAD PDIP
D
R
T
JMAX
= 150°C, θ
JA
= 130°C/W (N8)
T
JMAX
= 150°C, θ
JA
= 150°C/W (S8)
orDer inForMaTion
elecTrical characTerisTics
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
CANH
CANH Output Voltage V
TXD
= 0V, No Load
V
TXD
= 0V, R
L
= 60Ω
●
●
3.8
2.8
4.4
3.5
5.0
4.6
V
V
V
CANL
CANL Output Voltage V
TXD
= 0V, No Load
V
TXD
= 0V, R
L
= 60Ω
●
●
0
0
0.5
1.3
0.9
1.6
V
V
V
OD
Dominant State Differential Output Voltage V
TXD
= 0V, No Load, V
CC
= 4.75V
V
TXD
= 0V, R
L
= 60Ω, V
CC
= 4.75V
V
TXD
= 0V, R
L
= 36Ω, V
CC
= 4.75V
●
●
●
3.0
1.5
1.2
3.6
2.0
1.7
5.0
4.2
4.2
V
V
V
V
REC
Recessive State Differential Output Voltage V
TXD
= 5V, R
L
= 60Ω
●
–10 0 10 mV
V
CMR
Recessive State Common Mode Output Voltage V
TXD
= 5V, R
L
= 60Ω, V
CC
= 5V
●
2.7 3 3.5 V
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
CC
= 4.75V to 5.25V, V
RS
= 0V unless otherwise noted.
LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LT1796CN8#PBF LT1796CN8#TRPBF LT1796 CN8 8-Lead PDIP 0°C to 70°C
LT1796CS8#PBF LT1796CS8#TRPBF 1796 8-Lead Plastic SO 0°C to 70°C
LT1796IN8#PBF LT1796IN8#TRPBF LT1796I IN8 8-Lead PDIP –40°C to 85°C
LT1796IS8#PBF LT1796IS8#TRPBF 1796I 8-Lead Plastic SO –40°C to 85°C
Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
Consult LTC Marketing for information on nonstandard lead based finish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
LT1796
3
1796fa
For more information www.linear.com/LT1796
elecTrical characTerisTics
Dc elecTrical characTerisTics
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
CMD
Dominant State Common Mode Output Voltage R
L
= 60Ω, V
CC
= 5V
●
2 2.5 3 V
V
IH
TXD Input High Voltage
●
2.8 V
V
IL
TXD Input Low Voltage
●
2 V
I
IN1
TXD Input Current 0 < V
TXD
< V
CC
●
–5 5 µA
I
SCH
CANH Short-Circuit Current, Dominant Mode V
CANH
= 0V, V
CC
= 5.25V
V
CANH
= –36V, V
CC
= 5.25V
V
CANH
= –60V, V
CC
= 5.25V
V
CANH
= 60V, V
CC
= 5.25V
●
●
●
●
–250
–10
–10
0
–1
–1
1
–
60
0
0
10
mA
mA
mA
mA
I
SCL
CANL Short-Circuit Current, Dominant Mode V
CANL
= 5V, V
TXD
= 0V, V
CC
= 5.25V
V
CANL
= 36V, V
TXD
= 0V, V
CC
= 5.25V
V
CANL
= 60V, V
TXD
= 0V, V
CC
= 5.25V
V
CANL
= –60V, V
TXD
= 0V, V
CC
= 5.25V
●
●
●
●
60
0
0
– 10
1
1
–1
250
10
10
0
mA
mA
mA
mA
R
IND
Differential Input Resistance V
TXD
= 5V, –7V < V
CANH
, V
CANL
< 12V
●
140 240 350 kΩ
CANH, CANL Input Resistance V
TXD
= 5V, –7V < V
CANH
, V
CANL
< 12V
●
70 120 175 kΩ
Input Fault Current (CANH, CANL) V
RS
= 5V, –60V < V
CANH
, V
CANL
< 60V
V
TXD
= 5V, –60V < V
CANH
, V
CANL
< 60V
V
CC
= 0V, –60V < V
CANH
, V
CANL
< 60V
●
●
●
–3
–3
–3
3
3
3
mA
mA
mA
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
TH
Differential Input Threshold Voltage
for Receiver
V
RS
= 0V, –7V < V
CM
< 12V
V
RS
= 5V, –7V < V
CM
< 12V
l
l
0.5
0.5
0.9
0.9
V
V
∆V
TH
Receiver Input Hysteresis –7V < V
CM
< 12V 70 mV
V
OH
Receiver Output High Voltage V
CC
= 4.75V, I
O
= –400µA, V
ID
= 500mV
l
3 3.6 V
V
OL
Receiver Output Low Voltage V
CC
= 4.75V, I
O
= 1.6mA, V
ID
= 900mV
l
0.15 0.4 V
I
SCR
Receiver Short-Circuit Current 0V < V
O
< V
CC
, V
CC
= 5.25V
l
7 20 85 mA
V
REF
Reference Output Voltage –100µA < I
REF
< 100µA
l
2.25 2.5 2.7 V
V
REFSC
Reference Output Short-Circuit Current 0 < V
REF
< V
CC
l
–20 20 mA
V
RSSB
R
S
Pin Standby Threshold V
CC
= 5V
l
2.5 2.8 4 V
I
RS
R
S
Input Current V
RS
= 5V, V
CC
= 5V
V
RS
= 0V, V
CC
= 5V
R
S
= 47k, V
CC
= 5V
l
l
l
–270
–90
0.1
–200
–60
10
–140
–40
µA
µA
µA
I
CC
Supply Current Dominant
Recessive
Standby
No Load, V
RS
= 0V, V
TXD
= 0V, V
CC
= 5.25V
R
L
= 60Ω, V
RS
= 0V, V
TXD
= 5V, V
CC
= 5.25V
R
L
= 60Ω, V
RS
= 5V, V
CC
= 5.25V
l
l
l
4.3
3.8
0.8
7
7
1.5
mA
mA
mA
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
CC
= 4.75V to 5.25V, V
RS
= 0V unless otherwise noted.
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
CC
= 4.75V to 5.25V, V
RS
= 0V unless otherwise noted.
P1-P3P4-P6P7-P9P10-P10

LT1796CN8#PBF

Mfr. #:
Buy LT1796CN8#PBF
Manufacturer:
Analog Devices Inc.
Description:
CAN Interface IC Overvoltage Fault Protected CAN Tran
Lifecycle:
New from this manufacturer.
Delivery:
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