The ISO721, ISO721M, ISO722, and ISO722M are digital isolators with a logic input and output buffer separated by a silicon dioxide (SiO2) insulation barrier

ISO721M

Manufacturer Part NumberISO721M
DescriptionThe ISO721, ISO721M, ISO722, and ISO722M are digital isolators with a logic input and output buffer separated by a silicon dioxide (SiO2) insulation barrier
ManufacturerTexas Instruments
ISO721M datasheet
 


Specifications of ISO721M

Number Of Channels1Channel Configuration1/0
Insulation Rating(vrms)2500Supply Voltage(s)(v)3.3, 5
Datarate(mbps)150Input Noise FilterNone
Prop Delay(max)(ns)16Ttl/cmos Input ThresholdCMOS
FootprintADuM1100Operating Temperature Range(c)-40 to 125
Pin/package8SOICThermal ShutdownNo
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3.3-V / 5-V HIGH-SPEED DIGITAL ISOLATORS
Check for Samples: ISO721, ISO721M, ISO722,
FEATURES
1
• 4000-V
Isolation, 560-V
(peak)
peak
23
– UL 1577, IEC 60747-5-2 (VDE 0884, Rev. 2)
IEC 61010-1, IEC 60950-1 and CSA
Approved
– 50 kV/µs Transient Immunity, Typical
Signaling Rate 0 Mbps to 150 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 Opto and
Magnetic Isolators
APPLICATIONS
Industrial Fieldbus
– Modbus
– Profibus
– DeviceNet™ Data Buses
– Smart Distributed Systems ( SDS™)
Computer Peripheral Interface
Servo Control Interface
Data Acquisition
DC Channel
OSC
+
PWM
Input
IN
+
Filter
AC Channel
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
SDS is a trademark of Honeywell.
2
DeviceNet is a trademark of Open Devicenet Vendors Association, Inc.
3
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.
DESCRIPTION
V
IORM
The ISO721, ISO721M, ISO722, and ISO722M are
digital isolators with a logic input and output buffer
separated by a silicon dioxide (SiO
barrier. This barrier provides galvanic isolation of up
to 4000 V. 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.
A binary input signal is conditioned, translated to a
balanced signal, then differentiated by the capacitive
isolation barrier. 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 is
sent across the barrier to ensure the proper dc level
of the output. If this dc-refresh pulse is not received
for more than 4 ms, the input is assumed to be
unpowered or not being actively driven, and the
failsafe circuit drives the output to a logic-high state.
FUNCTION DIAGRAM
Isolation Barrier
+
_
V
ref
_
+
POR
BIAS
+
_
V
ref
_
+
ISO721, ISO721M
ISO722, ISO722M
SLLS629J – JANUARY 2006 – REVISED JULY 2010
ISO722M
) insulation
2
Filter
Pulse Width
Demodulation
Carrier Detect
POR
ISO722
Only
Data MUX
EN
AC Detect
3-State
OUT
Output Buffer
Copyright © 2006–2010, Texas Instruments Incorporated

ISO721M Summary of contents

  • Page 1

    ... Instruments standard warranty. Production processing does not necessarily include testing of all parameters. DESCRIPTION V IORM The ISO721, ISO721M, ISO722, and ISO722M are digital isolators with a logic input and output buffer separated by a silicon dioxide (SiO barrier. This barrier provides galvanic isolation 4000 V. Used in conjunction with isolated power ...

  • Page 2

    ... The small capacitance and resulting time constant provide for fast operation with signaling rates (dc) to 100 Mbps for the ISO721/ISO722, and 0 Mbps to 150 Mbps with the ISO721M/ISO722M. These devices require two supply voltages of 3.3-V, 5-V, or any combination. All inputs are 5-V tolerant when supplied from a 3 ...

  • Page 3

    ... JEDEC Standard 22, Test Method A114-C.01 JEDEC Standard 22, Test Method C101 ISO72x ISO72xM ISO72x IOS72xM See the Thermal Characteristics table ISO721 ISO721M ISO722 ISO722M ISO721, ISO721M ISO722, ISO722M SLLS629J – JANUARY 2006 – REVISED JULY 2010 UL Recognized under 1577 (1) Component Recognition Program ...

  • Page 4

    ... TEST ISO V = 1.2 × (100% production) TEST ISO V = 500 Copyright © 2006–2010, Texas Instruments Incorporated ISO721 ISO721M ISO722 ISO722M www.ti.com SPECIFICATIONS UNIT 560 Vpeak 672 Vpeak 896 Vpeak 1050 Vpeak 4000 Vpeak 3535 / 2500 ...

  • Page 5

    ... See Figure 6 150-Mbps NRZ data input, See ISO72xM 150-Mbps unrestricted bit run length data input, See Figure 6 ISO721 ISO721M ISO722 ISO722M ISO721, ISO721M ISO722, ISO722M SLLS629J – JANUARY 2006 – REVISED JULY 2010 MIN TYP MAX UNIT 0 ...

  • Page 6

    ... See Figure 6 150-Mbps NRZ data input, See ISO72xM 150-Mbps unrestricted bit run length data input, See Figure 6 Copyright © 2006–2010, Texas Instruments Incorporated ISO721 ISO721M ISO722 ISO722M www.ti.com MIN TYP MAX UNIT 0.5 1 ...

  • Page 7

    ... See Figure 6 150-Mbps NRZ data input, See ISO72xM 150-Mbps unrestricted bit run length data input, See Figure 6 ISO721 ISO721M ISO722 ISO722M ISO721, ISO721M ISO722, ISO722M SLLS629J – JANUARY 2006 – REVISED JULY 2010 MIN TYP MAX UNIT 0 ...

  • Page 8

    ... NRZ data input, See ISO72x 100-Mbps unrestricted bit run length data input, See Figure 6 150-Mbps NRZ data input, See ISO72xM 150-Mbps unrestricted bit run length data input, See Figure 6 ISO721 ISO721M ISO722 ISO722M www.ti.com MIN TYP MAX 0.3 0 150 ...

  • Page 9

    ... V I OUT PZL NOTE B NOTE ≤ 3 ns, t ≤ Ω ISO721 ISO721M ISO722 ISO722M ISO721, ISO721M ISO722, ISO722M SLLS629J – JANUARY 2006 – REVISED JULY 2010 CC1 CC1 PLH PHL 90% ...

  • Page 10

    ... EN L ISO722 15 pF and 20% ± ISO722M V V CC1 CC2 0 GND1 GND2 1% ± ISO721 ISO721M ISO722 ISO722M www.ti.com V CC1 OUT 20% ± Copyright © 2006–2010, Texas Instruments Incorporated ...

  • Page 11

    ... Copyright © 2006–2010, Texas Instruments Incorporated Product Folder Link(s itte r 16 – 1. Transition time is 800 ps. NRZ data input has no more than five consecutive ISO721 ISO721M ISO722 ISO722M ISO721, ISO721M ISO722, ISO722M SLLS629J – JANUARY 2006 – REVISED JULY 2010 Tektronix 784D V ...

  • Page 12

    ... IEC 60664-1 RATINGS TABLE TEST CONDITIONS Material group Rated mains voltage ≤150 VRMS Rated mains voltage ≤300 VRMS Input CC1 CC1 CC2 750 kW 500 W IN ISO721 ISO721M ISO722 ISO722M www.ti.com MIN TYP MAX UNIT D-8 4.8 DUB-8 6.1 D-8 4.3 DUB-8 6.8 ≥ 175 0.008 12 < ...

  • Page 13

    ... High-K thermal resistance 5 150° pF, CC1 CC2 J L Input a 100 Mbps 50% duty cycle square wave ISO721 ISO721M ISO722 ISO722M ISO721, ISO721M ISO722, ISO722M SLLS629J – JANUARY 2006 – REVISED JULY 2010 MIN TYP MAX UNIT 100 mA 153 150 ° ...

  • Page 14

    ... V Irrelevant High level; CC (1) Table 5. ISO722 INPUT ISO722/ISO722M (IN) OUTPUT ENABLE (EN Open X X ≤ 2.5 V Irrelevant High impedance High level Low level CC ISO721 ISO721M ISO722 ISO722M www.ti.com 200 OUTPUT (OUT OUTPUT (OUT open open L H ...

  • Page 15

    ... IT+ 2.1 2 1.9 Air Flow at 7 cf/m 1.8 1.7 1.6 1.5 1 110 125 -40 -25 o − C ISO721 ISO721M ISO722 ISO722M ISO721, ISO721M ISO722, ISO722M SLLS629J – JANUARY 2006 – REVISED JULY 2010 RMS SUPPLY CURRENT vs SIGNALING RATE = CC2 I CC1 Signaling Rate (Mbps) Figure 9. ...

  • Page 16

    ... 3 − Low-Level Output Voltage − Figure 16. ISO721 ISO721M ISO722 ISO722M www.ti.com HIGH-LEVEL OUTPUT CURRENT vs HIGH-LEVEL OUTPUT VOLTAGE 3 − High -Level Output Voltage − ...

  • Page 17

    ... V V CC2 CC1 OUT 4 5 Figure 18. Basic Application Circuit ISO721 ISO721M ISO722 ISO722M ISO721, ISO721M ISO722, ISO722M SLLS629J – JANUARY 2006 – REVISED JULY 2010 HCPL-xxxx IL710 DD2 DD1 ...

  • Page 18

    ... These sparks often cause carbonization on insulation material and lead to a carbon track between points of different potential. This process is known as tracking. 18 Submit Documentation Feedback Product Folder Link(s): ISOLATION GLOSSARY Copyright © 2006–2010, Texas Instruments Incorporated ISO721 ISO721M ISO722 ISO722M www.ti.com ...

  • Page 19

    ... Changes from Revision H (June 2009) to Revision I • Changed 50 kV kV/µs ............................................................................................................................................... Copyright © 2006–2010, Texas Instruments Incorporated Product Folder Link(s): SLLS629J – JANUARY 2006 – REVISED JULY 2010 REVISION HISTORY ISO721 ISO721M ISO722 ISO722M ISO721, ISO721M ISO722, ISO722M Page from 3.3-V CC1 6 from 3 ...

  • Page 20

    ... ACTIVE SOIC ISO721DRG4 ACTIVE SOIC ISO721DUB ACTIVE SOP ISO721DUBR ACTIVE SOP ISO721MD ACTIVE SOIC ISO721MDG4 ACTIVE SOIC ISO721MDR ACTIVE SOIC ISO721MDRG4 ACTIVE SOIC ISO722D ACTIVE SOIC ISO722DG4 ACTIVE SOIC ISO722DR ACTIVE SOIC ISO722DRG4 ACTIVE SOIC ISO722MD ACTIVE SOIC ISO722MDG4 ACTIVE SOIC ...

  • Page 21

    ... TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold Customer on an annual basis. OTHER QUALIFIED VERSIONS OF ISO721, ISO721M : • ...

  • Page 22

    Enhanced Product - Supports Defense, Aerospace and Medical Applications PACKAGE OPTION ADDENDUM Addendum-Page 3 10-Jul-2010 ...

  • Page 23

    ... TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Type Drawing ISO721DR SOIC ISO721DUBR SOP DUB ISO721MDR SOIC ISO722DR SOIC ISO722MDR SOIC PACKAGE MATERIALS INFORMATION Pins SPQ Reel Reel Diameter Width (mm) W1 (mm 2500 330.0 12.4 8 350 330.0 24 ...

  • Page 24

    ... Device Package Type ISO721DR SOIC ISO721DUBR SOP ISO721MDR SOIC ISO722DR SOIC ISO722MDR SOIC PACKAGE MATERIALS INFORMATION Package Drawing Pins SPQ Length (mm 2500 DUB 8 350 D 8 2500 D 8 2500 D 8 2500 Pack Materials-Page 2 27-Feb-2012 Width (mm) Height (mm) 346 ...

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    ... Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are sold subject to TI’ ...