ISO7831 Datasheet, PDF (1/32 Pages) Texas Instruments – ISO7831 High-Performance, 8000 VPK Reinforced Triple Digital Isolators

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ISO7831, ISO7831F
SLLSEP8A – JULY 2015 – REVISED SEPTEMBER 2015
ISO7831 High-Performance, 8000 V_PK Reinforced Triple Digital Isolators
1 Features
•1 Signaling Rate: Up to 100 Mbps
• Wide Supply Range: 2.25 V to 5.5 V
• 2.25 V to 5.5 V Level Translation
• Wide Temperature Range: –55°C to 125°C
• Low Power Consumption, Typical 2.5 mA per
Channel at 1 Mbps
• Low Propagation Delay: 11 ns Typical
(5 V Supplies)
• Industry leading CMTI: ±100 kV/μs
• Robust Electromagnetic Compatibility (EMC)
• System-Level ESD, EFT, and Surge Immunity
• Low Emissions
• Isolation Barrier Life: >25 Years
• Wide Body SOIC-16 Package
• Safety and Regulatory Approvals:
– 8000 V_PK V_IOTM and 2121 V_PK V_IORM
Reinforced Isolation per DIN V VDE V 0884-10
(VDE V 0884-10):2006-12
– 5.7 kV_RMS Isolation for 1 Minute per UL 1577
– CSA Component Acceptance Notice 5A, IEC
60950-1, IEC 60601-1 and IEC 61010-1 End
Equipment Standards
– CQC Certification per GB4943.1-2011
2 Applications
• Industrial Automation
• Motor Control
• Power Supplies
• Solar Inverters
• Medical Equipment
• Hybrid Electric Vehicles
3 Description
The ISO7831 is a high-performance, 3 -channel
digital isolator with 8000 V_PK isolation voltage. This
device has reinforced isolation certifications
according to VDE, CSA, and CQC. The isolator
provides high electromagnetic immunity and low
emissions at low power consumption, while isolating
CMOS or LVCMOS digital I/Os. Each isolation
channel has a logic input and output buffer separated
by silicon dioxide (SiO₂) insulation barrier. This device
comes with enable pins which can be used to put the
respective outputs in high impedance for multi-master
driving applications and to reduce power
consumption. ISO7831 has two forward and one
reverse-direction channels . If the input power or
signal is lost, default output is 'high' for the ISO7831
and 'low' for the ISO7831F device. See Device
Functional Modes for further details. Used in
conjunction with isolated power supplies, this device
prevents noise currents on a data bus or other
circuits from entering the local ground and interfering
with or damaging sensitive circuitry. Through
innovative chip design and layout techniques,
electromagnetic compatibility of ISO7831 has been
significantly enhanced to ease system-level ESD,
EFT, Surge and Emissions compliance. ISO7831 is
available in 16-pin SOIC wide-body (DW) package.
Device Information⁽¹⁾
PART NUMBER PACKAGE
BODY SIZE (NOM)
ISO7831
ISO7831F
SOIC, DW (16) 10.30 mm x 7.50 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Simplified Schematic
V_CCI
Isolation
Capacitor
V_CCO
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 channels.
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.