Document
FEATURES
LTC2875 ±60V Fault Protected
3.3V or 5V 25kV ESD High Speed CAN FD Transceiver
DESCRIPTION
n Protected from Overvoltage Line Faults to ±60V n 3.3V or 5V Supply Voltage n High Speed CAN FD Operation Up to 4Mbps n ±25kV ESD Interface Pins, ±8kV All Other Pins n Variable Slew Rate Driver with Active Symmetry
Control and SPLIT Pin for Low Electromagnetic Emission (EME) n Extended Common Mode Range (±36V) n Ideal Passive Behavior to CAN Bus with Supply Off n Current Limited Drivers and Thermal Shutdown n Power-Up/Down Glitch-Free Driver Outputs n Micropower Shutdown Mode n Transmit Data (TXD) Dominant Timeout Function n ISO 11898-2 and CAN FD Compliant n DeviceNet Compatible n Up to MP-Grade Available (–55°C to 125°C) n 3mm × 3mm 8-Lead DFN and SO-8 Packages
APPLICATIONS
n Industrial Control and Instrumentation Networks n Automotive and Transportation Electronics n Building Automation, Security Systems, HVAC n Medical Equipment
The LTC®2875 is a robust high speed, low power CAN transceiver operating on 3.3V or 5V supplies that features ±60V overvoltage fault protection on the data transmission lines during all modes of operation, including powerdown. The maximum data rate has been extended to 4Mbps to support high speed protocols based on the CAN physical layer. Supports up to 4Mbps CAN with Flexible Data Rate (CAN FD). Enhanced ESD protection allows these parts to withstand ±25kV HBM on the transceiver interface pins without latchup or damage. Extended ±36V input common mode range and high common mode rejection on the CAN receiver provides tolerance of large ground loop voltages. A sophisticated CAN driver with active symmetry control maintains tight control of the common mode voltage for excellent electromagnetic emission, while the variable slew rate and split termination support allow additional EME reduction.
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TYPICAL APPLICATION
CAN Bus Link with Large Ground Loop Voltage
RXD1
LTC2875 R
VCC1 CANH
120Ω
VCC2 CANH
120Ω
LTC2875 R
TXD1 RS1
D
CANL
CANL
GND1 AC GROUND LOOP ≤ 36V PEAK
GND2
D
RXD2
TXD2 RS2
2875 TA01a
LTC2875 Transmitting at 4Mbps from a 3.3V Supply
TXD 2V/DIV
RXD 2V/DIV
CANH 1V/DIV
CANL 1V/DIV
COMMON MODE
100ns/DIV
2875 TA01b
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Rev A
1
LTC2875
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Supply Voltages VCC........................................................... –0.3V to 6V Logic Input Voltages (TXD, RS) ................... –0.3V to 6V Interface I/O: CANH, CANL, SPLIT .............. –60V to 60V Receiver Output (RXD) ..................–0.3V to (VCC + 0.3V) Bus Differential Voltage (CANH-CANL)....... –120V to 120V
Operating Ambient Temperature Range (Note 4) LTC2875I..............................................–40°C to 85°C LTC2875H........................................... –40°C to 125°C LTC2875MP........................................ –55°C to 125°C Storage Temperature Range................... –65°C to 150°C Lead Temperature (Soldering, 10 sec).................... 300°C
PIN CONFIGURATION
TOP VIEW
TXD 1 GND 2 VCC 3 RXD 4
8 RS 7 CANH 6 CANL 5 SPLIT
S8 PACKAGE 8-LEAD (150mil) PLASTIC SO TJMAX = 150°C, θJA = 120°C/W, θJC = 39°C/W
TOP VIEW
TXD 1
8 RS
GND 2
7 CANH
9
VCC 3
6 CANL
RXD 4
5 SPLIT
DD PACKAGE 8-LEAD (3mm × 3mm) PLASTIC DFN TJMAX = 150°C, θJA = 43°C/W, θJC = 5.5°C/W EXPOSED PAD (PIN 9) CONNECT TO PCB GND
ORDER INFORMATION
LEAD FREE FINISH
TAPE AND REEL
PART MARKING
PACKAGE DESCRIPTION
TEMPERATURE RANGE
LTC2875IDD#PBF
LTC2875IDD#TRPBF
LGKG
8-Lead (3mm × 3mm) Plastic DFN
–40°C to 85°C
LTC2875HDD#PBF
LTC2875HDD#TRPBF
LGKG
8-Lead (3mm × 3mm) Plastic DFN
–40°C to 125°C
LTC2875MPDD#PBF
LTC2875MPDD#TRPBF LGKG
8-Lead (3mm × 3mm) Plastic DFN
–55°C to 125°C
LTC2875IS8#PBF
LTC2875IS8#TRPBF
2875
8-Lead (150 mil) Plastic SO
–40°C to 85°C
LTC2875HS8#PBF
LTC2875HS8#TRPBF
2875
8-Lead (150 mil) Plastic SO
–40°C to 125°C
LTC2875MPS8#PBF
LTC2875MPS8#TRPBF
2875
8-Lead (150 mil) Plastic SO
–55°C to 125°C
Contact the factory for parts specified with wider operating temperature ranges.
Tape and reel specifications. Some packages are available in 500 unit reels through designated sales channels with #TRMPBF suffix.
Rev A
2 For more information www.analog.com
LTC2875
E LECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications at VCC = 5V unless otherwise noted. (Note 2)
are
at
TA
=
25°C.
VCC
=
3.3V
or
5V,
Figure
1
applies
with
RL
=
60Ω,
RS
=
0V,
TYP
values
SYMBOL PARAMETER
CONDITIONS
MIN TYP MAX UNITS
Supplies
VCC
ICC(R) ICC(D) ICCS
Supply Voltage
Supply Current (Recessive) Supply Current (Dominant) Supply Current in Shutdown Mode (I-Grade) Supply Current in Shutdown Mode (H-, MP-.