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LTC2858IMS-2#TRPBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20
LTC2856-1/LTC2856-2
LTC2857-1/LTC2857-2
LTC2858-1/LTC2858-2
1
285678ff
For more information www.linear.com/LTC2856-1
Typical applicaTion
FeaTures
applicaTions
DescripTion
20Mbps and Slew Rate
Limited 15kV RS485/RS422
Transceivers
The LT C
®
2856-1, LTC2856-2, LTC2857-1, LTC2857-2,
LTC2858-1 and LTC2858-2 are low power, RS485/RS422
transceivers operating on 5V supplies at maximum data
rates of 20Mbps or 250kbps for low EMI. The receiver has
a one-eighth unit load, supporting up to 256 nodes per bus
(C, I-Grade), and a failsafe feature that guarantees a high
output state under conditions of floating or shorted inputs.
The driver maintains a high output impedance over the
entire common mode range when disabled or when the
supply is removed. Excessive power dissipation caused by
bus contention or a fault is prevented by current limiting
all outputs and by thermal shutdown.
Enhanced ESD protection allows these parts to withstand
±15kV (human body model) on the transceiver interface
pins without latchup or damage.
n
20Mbps or Low EMI 250kbps Maximum Data Rate
n
No Damage or Latchup to ESD: ±15kV HBM
n
High Input Impedance Supports 256 Nodes
(C, I-Grade)
n
Operation Up to 125°C (H-Grade)
n
Guaranteed Failsafe Receiver Operation Over the
Entire Common Mode Range
n
Current Limited Drivers and Thermal Shutdown
n
Delayed Micropower Shutdown: 5µA Maximum
(C, I-Grade)
n
Power Up/Down Glitch-Free Driver Outputs
n
Low Operating Current: 900µA Maximum in Receive
Mode
n
Compatible with TIA/EIA-485-A Specifications
n
Available in 8-Lead and 10-Lead 3mm × 3mm DFN
and 8-Lead and 10-Lead MSOP Packages
n
Low Power RS485/RS422 Transceiver
n
Level Translator
n
Backplane Transceiver
V
CC1
GND1
R
RO1
RE1
DE1
DI1
D
R
T
LTC2856-1
LTC2856-1
R
T
285678 TA01a
V
CC2
GND2
R
RO2
RE2
DE2
DI2
D
PART
NUMBER
MAX DATA
RATE (Mbps)
DUPLEX
PACKAGE
LTC2856-1 20 Half MSOP-8, DFN-8
LTC2856-2 0.25 Half MSOP-8, DFN-8
LTC2857-1 20 Full MSOP-8, DFN-8
LTC2857-2 0.25 Full MSOP-8, DFN-8
LTC2858-1 20 Full MSOP-10, DFN-10
LTC2858-2 0.25 Full MSOP-10, DFN-10
DI
Y
Z
Y-Z
20ns/DIV
2856 TA01b
2V/DIV
LTC2858-1 at 20Mbps
L, LT , LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
LTC2856-1/LTC2856-2
LTC2857-1/LTC2857-2
LTC2858-1/LTC2858-2
2
285678ff
For more information www.linear.com/LTC2856-1
package inFormaTion
absoluTe maximum raTings
Supply Voltage (V
CC
) ................................... –0.3V to 7V
Logic Input Voltages (RE, DE, DI) ................ –0.3V to 7V
Interface I/O (A, B, Y, Z) .................... (V
CC
– 15V) to 15V
Receiver Output Voltage (RO) .......–0.3V to (V
CC
+ 0.3V)
Operating Temperature Range (Note 4)
LTC28
5xC
................................................ 0°C to 70°C
LTC285xI
.............................................–40°C to 85°C
LTC285xH
.......................................... –40°C to 125°C
(Note 1)
Storage Temperature Range
MSOP
................................................ –65°C to 150°C
DFN
.................................................... –65°C to 150°C
Lead Temperature (Soldering, 10 sec)
MSOP
...............................................................300°C
LTC2856
TOP VIEW
9
DD PACKAGE
8-LEAD (3mm × 3mm) PLASTIC DFN
5
6
7
8
4
3
2
1RO
RE
DE
DI
V
CC
B
A
GND
EXPOSED PAD (PIN 9) IS GND, MUST BE SOLDERED TO PCB
T
JMAX
= 150°C, θ
JA
= 43°C/W, θ
JC
= 5.5°C/W
1
2
3
4
RO
RE
DE
DI
8
7
6
5
V
CC
B
A
GND
TOP VIEW
MS8 PACKAGE
8-LEAD PLASTIC MSOP
T
JMAX
= 150°C, θ
JA
= 163°C/W, θ
JC
= 40°C/W
LTC2857
TOP VIEW
9
DD PACKAGE
8-LEAD (3mm × 3mm) PLASTIC DFN
5
6
7
8
4
3
2
1V
CC
RO
DI
GND
A
B
Z
Y
EXPOSED PAD (PIN 9) IS GND, MUST BE SOLDERED TO PCB
T
JMAX
= 150°C, θ
JA
= 43°C/W, θ
JC
= 5.5°C/W
1
2
3
4
V
CC
RO
DI
GND
8
7
6
5
A
B
Z
Y
MS8 PACKAGE
8-LEAD PLASTIC MSOP
T
JMAX
= 150°C, θ
JA
= 163°C/W, θ
JC
= 40°C/W
LTC2858
TOP VIEW
11
DD PACKAGE
10-LEAD (3mm × 3mm) PLASTIC DFN
10
9
6
7
8
4
5
3
2
1
V
CC
A
B
Z
Y
RO
RE
DE
DI
GND
EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB
T
JMAX
= 150°C, θ
JA
= 43°C/W, θ
JC
= 5.5°C/W
1
2
3
4
5
RO
RE
DE
DI
GND
10
9
8
7
6
V
CC
A
B
Z
Y
TOP VIEW
MS PACKAGE
10-LEAD PLASTIC MSOP
T
JMAX
= 150°C, θ
JA
= 160°C/W, θ
JC
= 45°C/W
LTC2856-1/LTC2856-2
LTC2857-1/LTC2857-2
LTC2858-1/LTC2858-2
3
285678ff
For more information www.linear.com/LTC2856-1
LTC2856 C DD -1 #TR PBF
LEAD FREE DESIGNATOR
TAPE AND REEL
TR = Tape and Reel
SPEED
-1 = 20Mbps Max. Data Rate
-2 = 250kbps Max. Data Rate
PACKAGE TYPE
DD = 8-Lead Plastic DFN (LTC2856, LTC2858)
MS8 = 8-Lead Plastic MSOP (LTC2856, LTC2857)
MS = 10-Lead Plastic MSOP (LTC2858)
TEMPERATURE GRADE
C = Commercial T
emperature Range (0°C to 70°C)
I = Industrial Temperature Range (–40°C to 85°C)
H = Automotive Temperature Range (–
40°C to 125°C)
PRODUCT PART NUMBER
LTC2856 = Half Duplex, with Enables
LTC2857 = Full Duplex, no Enables
LTC2858 = Full Duplex, with Enables
Consult LT
C Marketing for information on non-standard 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/
orDer inFormaTion
proDucT selecTion guiDe
PART NUMBER PART MARKING MAX DATA RATE (Mbps) DUPLEX
LOW POWER
SHUTDOWN MODE PACKAGE
LTC2856-1 LTCMF, LCMG 20 Half Yes MSOP-8, DFN-8
LTC2856-2 LTCMH, LCMJ 0.25 Half Yes MSOP-8, DFN-8
LTC2857-1 LTCMC, LCMD 20 Full No MSOP-8, DFN-8
LTC2857-2 LTCMK, LCMM 0.25 Full No MSOP-8, DFN-8
LTC2858-1 LTCGQ, LCGR 20 Full Yes MSOP-10, DFN-10
LTC2858-2 LTCMQ, LCMR 0.25 Full Yes MSOP-10, DFN-10
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20

LTC2858IMS-2#TRPBF

Mfr. #:
Buy LTC2858IMS-2#TRPBF
Manufacturer:
Analog Devices Inc.
Description:
RS-422/RS-485 Interface IC 5V Full-Duplex 250kbps RS485 Transceiver w/ Enables
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
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