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LTM2882IY-5-PBF Datasheet(PDF) 1 Page - Linear Technology

Part # LTM2882IY-5-PBF
Description  Dual Isolated RS232 關Module Transceiver Power
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTM2882IY-5-PBF Datasheet(HTML) 1 Page - Linear Technology

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LTM2882
1
2882fa
TYPICAL APPLICATION
DESCRIPTION
Dual Isolated RS232
µModule Transceiver + Power
The LTM®2882 is a complete galvanically isolated dual
RS232 μModule®transceiver. No external components are
required. A single 3.3V or 5V supply powers both sides
of the interface through an integrated, isolated DC/DC
converter. A logic supply pin allows easy interfacing with
different logic levels from 1.62V to 5.5V, independent of
the main supply.
Coupled inductors and an isolation power transformer
provide 2500VRMS of isolation between the line transceiver
and the logic interface. This device is ideal for systems
with different grounds, allowing for large common mode
voltages. Uninterrupted communication is guaranteed for
common mode transients greater than 30kV/μs.
This part is compatible with the TIA/EIA-232-F standard.
Driver outputs are protected from overload and can be
shorted to ground or up to ±15V without damage. An
auxiliary isolated digital channel is available. This channel
allows configuration for half-duplex operation by control-
ling the DE pin.
Enhanced ESD protection allows this part to withstand up
to ±10kV (human body model) on the transceiver interface
pins to isolated supplies and across the isolation barrier
to logic supplies without latchup or damage.
Isolated Dual RS232 μModule Transceiver
FEATURES
APPLICATIONS
n Isolated Dual RS232 Transceiver: 2500VRMS
n Isolated DC Power: 5V at Up to 200mA
n No External Components Required
n 1.62V to 5.5V Logic Supply for Flexible Digital
Interface
n High Speed Operation
1Mbps for 250pF/3kΩ Load
250kbps for 1nF/3kΩ Load
100kbps for 2.5nF/3kΩ TIA/EIA-232-F Load
n 3.3V (LTM2882-3) or 5V (LTM2882-5) Operation
n No Damage or Latchup to ±10kV ESD HBM on
Isolated RS232 Interface or Across Isolation Barrier
n High Common Mode Transient Immunity: 30kV/μs
n Common Mode Working Voltage: 560VPEAK
n True RS232 Compliant Output Levels
n Small Low Profile (15mm
× 11.25mm × 2.8mm)
Surface Mount BGA and LGA Packages
n Isolated RS232 Interface
n Industrial Communication
n Test and Measurement Equipment
n Breaking RS232 Ground Loops
1Mbps Operation
2882 TA01a
ON
DIN
T1IN
R1OUT
T2IN
R2OUT
DOUT
T1OUT
R1IN
T2OUT
R2IN
LTM2882
3.3V (LTM2882-3)
5V (LTM2882-5)
VL
VCC
GND
GND2
ON
OFF
VCC2
DE
5V
AVAILABLE CURRENT:
150mA (LTM2882-5)
100mA (LTM2882-3)
400ns/DIV
DRIVER OUTPUTS TIED TO RECEIVER INPUTS
TOUT LOAD = 250pF + RIN
ROUT LOAD = 150pF
10V/DIV
5V/DIV
TIN
T1OUT/R1IN
T2OUT/R2IN
5V/DIV
2882 TA01b
R1OUT
R2OUT
L, LT, LTC, LTM, Linear Technology, the Linear logo and μModule are registered trademarks of
Linear Technology Corporation. All other trademarks are the property of their respective owners.


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