ISO7740 Datasheet, PDF (1/41 Pages) Texas Instruments – High Speed, Robust EMC Reinforced Quad-Channel Digital Isolators

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ISO7740, ISO7741, ISO7742
SLLSEP4A – MARCH 2016 – REVISED JUNE 2016
ISO774x High Speed, Robust EMC Reinforced Quad-Channel 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
• Default Output High and Low Options
• Wide Temperature Range: –55°C to 125°C
• Low Power Consumption, Typical 1.5 mA per
Channel at 1 Mbps
• Low Propagation Delay: 10.7 ns Typical
(5-V Supplies)
• High CMTI: ±75 kV/μs Typical
• Robust Electromagnetic Compatibility (EMC)
• System-Level ESD, EFT, and Surge Immunity
• Low Emissions
• Isolation Barrier Life: >40 Years
• Wide-SOIC (DW-16) and QSOP (DBQ-16)
Package Options
• Safety-Related Certifications:
– DIN V VDE V 0884-10 (VDE V 0884-10):
2006-12
– UL 1577 Component Recognition Program
– CSA Component Acceptance Notice 5A, IEC
60950-1, IEC 60601-1 and IEC 61010-1 End
Equipment Standards
– CQC Approval per GB4943.1-2011
– TUV Certification according to EN 60950-1 and
EN 61010-1
– All Certifications are Planned
2 Applications
• Industrial Automation
• Motor Control
• Power Supplies
• Solar Inverters
• Medical Equipment
• Hybrid Electric Vehicles
3 Description
The ISO774x devices are high-performance, quad-
channel digital isolators with 5000 V_RMS (DW
package) and 2500 V_RMS (DBQ package) isolation
ratings per UL 1577. This family of devices has
reinforced insulation ratings according to VDE, CSA,
TUV and CQC.
The ISO774x devices provide 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. The ISO7740
device has all four channels in the same direction, the
ISO7741 device has three forward and one reverse-
direction channels, and the ISO7742 device has two
forward and two reverse-direction channels. If the
input power or signal is lost, default output is high for
devices without suffix F and low for devices with
suffix F. See the Device Functional Modes section for
further details.
Used in conjunction with isolated power supplies, this
device helps prevent 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 the
ISO774x family of devices has been significantly
enhanced to ease system-level ESD, EFT, surge, and
emissions compliance. The ISO774x family of
devices is available in 16-pin SOIC and QSOP
packages.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
ISO7740
ISO7741
ISO7742
SOIC (DW)
SSOP (DBQ)
10.30 mm × 7.50 mm
4.90 mm × 3.90 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
Copyright © 2016, Texas Instruments Incorporated
V_CCI and GNDI are supply and ground
connections respectively for the input
channels.
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.