ISO7342FC_15 Datasheet, PDF (1/34 Pages) Texas Instruments – ISO734x Robust EMC, Low Power, Quad-Channel Digital Isolators

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ISO7340C, ISO7340FC, ISO7341C, ISO7341FC, ISO7342C, ISO7342FC
SLLSEI6E – SEPTEMBER 2014 – REVISED APRIL 2015
ISO734x Robust EMC, Low Power, Quad-Channel Digital Isolators
1 Features
•1 Signaling Rate: 25 Mbps
• Integrated Noise Filter on the Inputs
• Default Output 'High' and 'Low' Options
• Low Power Consumption, Typical I_CC per Channel
at 1 Mbps:
– ISO7340: 0.9 mA (5 V Supplies),
0.7 mA (3.3 V Supplies)
– ISO7341: 1.2 mA (5 V Supplies),
0.9 mA (3.3 V Supplies)
– ISO7342: 1.3 mA (5 V Supplies),
0.9 mA (3.3 V Supplies)
• Low Propagation Delay: 31 ns
Typical (5 V Supplies)
• 3.3 V and 5 V Level Translation
• Wide Temperature Range: –40°C to 125°C
• 70 KV/μs Transient Immunity,
Typical (5 V Supplies)
• Robust Electromagnetic Compatibility (EMC)
– System-level ESD, EFT, and Surge Immunity
– Low Emissions
• Operates from 3.3 V and 5 V Supplies
• Wide Body SOIC-16 Package
• Safety and Regulatory Approvals:
– 4242 V_PK Basic Isolation per DIN V VDE V
0884-10 and DIN EN 61010-1
– 3 KV_RMS Isolation for 1 minute per UL 1577
– CSA Component Acceptance Notice 5A, IEC
60950-1 and IEC 61010-1 End Equipment
Standards
– GB4943.1-2011 CQC Certification
2 Applications
• Optocoupler Replacement in:
– Industrial Fieldbus
– Profibus
– Modbus
– DeviceNet^TM Data Buses
– Servo Control Interface
– Motor Control
– Power Supplies
– Battery Packs
3 Description
ISO734x provide galvanic isolation up to 3000 V_RMS
for 1 minute per UL and 4242 V_PK per VDE. These
devices have four isolated channels comprised of
logic input and output buffers separated by a silicon
dioxide (SiO₂) insulation barrier. ISO7340 has four
channels in forward direction, ISO7341 has three
forward and one reverse-direction channels; and
ISO7342 has two forward and two reverse-direction
channels. In case of input power or signal loss,
default output is 'low' for devices with suffix 'F' and
'high' for devices without suffix 'F'. See Device
Functional Modes for further details. Used in
conjunction with isolated power supplies, these
devices prevent noise currents on a data bus or other
circuits from entering the local ground and interfering
with or damaging sensitive circuitry. ISO734x has
integrated noise filter for harsh industrial environment
where short noise pulses may be present at the
device input pins. ISO734x has TTL input thresholds
and operates from 3 V to 5.5 V supply levels.
Through innovative chip design and layout
techniques, electromagnetic compatibility of ISO734x
has been significantly enhanced to enable system-
level ESD, EFT, Surge and Emissions compliance.
Device Information⁽¹⁾
ORDER NUMBER
PACKAGE
BODY SIZE
ISO7340C
ISO7340FC
ISO7341C
ISO7341FC
SOIC (16)
10.3mm x 7.50mm
ISO7342C
ISO7342FC
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Simplified Schematic
V_CCI
V_CCO
Isolation
Capacitor
INx
OUTx
ENx
GNDI
GNDO
(1) V_CCI and GNDI are supply and ground
connections respectively for the input
channels.
(2) V_CCO and GNDO are supply and ground
connections respectively for the output.
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.