ISO7631FM_15 Datasheet, PDF (1/35 Pages) Texas Instruments – Low-Power Triple and Quad-Channels Digital Isolators

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ISO7631FM, ISO7631FC, ISO7641FC
SLLSEC3E – SEPTEMBER 2012 – REVISED AUGUST 2015
ISO76x1 Low-Power Triple and Quad-Channels Digital Isolators
1 Features
•1 Signaling Rate: 150 Mbps (M-Grade), 25 Mbps
(C-Grade)
• Robust Design with Integrated Noise Filter
(C-Grade)
• Low Power Consumption, Typical I_CC per Channel
(3.3-V Supplies):
– ISO7631FM: 2 mA at 10 Mbps
– ISO7631FC: 1.5 mA at 10 Mbps
– ISO7641FC: 1.3 mA at 10 Mbps
• Extremely-Low I_{CC_disable} (C-Grade)
• Low Propagation Delay: 7 ns Typical (M-Grade)
• Output Defaults to Low-State in Fail-Safe Mode
• Wide Temperature Range: –40°C to 125°C
• 50 KV/µs Transient Immunity, Typical
• Long Life With SiO₂ Isolation Barrier
• Operates From 2.7-V (M-Grade), 3.3-V and 5-V
Supply and Logic Levels
• 2.7-V (M-Grade), 3.3-V and 5-V Level Translation
• Wide Body SOIC-16 Package
• Safety and Regulatory Approvals
– 2500 V_RMS Isolation for 1 Minute per UL 1577
– 4242 V_PK Basic Insulation per DIN V VDE V
0884-10 and DIN EN 61010-1
– CSA Component Acceptance Notice 5A, IEC
60950-1 and IEC 61010-1 End Equipment
Standards
– CQC Certification per GB4943.1-2011
– TUV 3000 V_RMS Reinforced Insulation
according to EN/UL/CSA 60950-1 and
EN/UL/CSA 61010-1
2 Applications
• Optocoupler Replacement in:
– Industrial Fieldbus
– Profibus
– Modbus
– DeviceNet™ Data Buses
– Servo Control Interface
– Motor Control
– Power Supplies
– Battery Packs
3 Description
The ISO7631F and ISO7641F devices provide
galvanic isolation up to 4242 V_PK per VDE. The
ISO7631F device has three channels, two of which
operate in the forward direction and one which
operates in the reverse direction. The ISO7641F
device has 4 channels, three of which operate in the
forward direction and one of which operates in the
reverse direction. Suffix F indicates that output
defaults to low-state in fail-safe conditions (see ). M-
Grade devices are high-speed isolators capable of up
to150-Mbps data rates with fast propagation delays,
whereas C-Grade devices are capable of up to 25-
Mbps data rates with low power consumption and
integrated filters for noise-prone applications. C-
Grade devices are recommended for lower-speed
applications where input noise pulses of less than 6
ns duration must be suppressed, or when low-power
consumption is critical.
Each isolation channel has a logic input and output
buffer separated by a silicon dioxide (SiO₂) insulation
barrier. 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. The devices have TTL input thresholds and
can operate from 2.7-V (M-Grade), 3.3-V and 5-V
supplies. All inputs are 5-V tolerant when supplied
from 3.3-V or 2.7-V supplies.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
ISO7631FM
ISO7631FC
SOIC (16)
10.30 mm × 7.50 mm
ISO7641FC
(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.