ISO721-Q1_16 Datasheet, PDF (1/27 Pages) Texas Instruments – AND/OR 5-V HIGH-SPEED DIGITAL ISOLATORS

ISO721-Q1, ISO722-Q1
www.ti.com
SLLS918C – JULY 2008 – REVISED JUNE 2013
3.3-V AND/OR 5-V HIGH-SPEED DIGITAL ISOLATORS
Check for Samples: ISO721-Q1, ISO722-Q1
FEATURES
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• Qualified for Automotive Applications
• AEC-Q100 Qualified With the Following
Results:
– Device Temperature Grade 1: –40ºC to
125ºC Ambient Operating Temperature
Range
– Device HBM ESD Classification Level H2
– Device CDM ESD Classification Level C5
• 4000-V_(peak) Isolation
– UL 1577, IEC 60747-5-2 (VDE 0884, Rev 2),
IEC 61010-1
– 50-kV/s Transient Immunity (Typ)
• Signaling Rate 0 Mbps to 100 Mbps
– Low Propagation Delay
– Low Pulse Skew
(Pulse-Width Distortion)
• Low-Power Sleep Mode
• High Electromagnetic Immunity
• Low Input Current Requirement
• Failsafe Output
• Drop-In Replacement for Most Optical and
Magnetic Isolators
DESCRIPTION
The ISO72x-Q1 is a digital isolator with a logic input and output buffer separated by a silicon oxide (SiO₂)
insulation barrier. This barrier provides galvanic isolation of up to 4000 V. 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.
The capacitive isolation barrier conditions, translates to a balanced signal, then differentiates a binary input
signal. Across the isolation barrier, a differential comparator receives the logic-transition information, then sets or
resets a flip-flop and the output circuit accordingly. A periodic update pulse sent across the barrier ensures the
proper dc level of the output. On failure to receive this dc refresh pulse for more than 4 μs, the response of the
device is as if the input is or not actively driven, and the failsafe circuit drives the output to a logic-high state.
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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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