ISO7221C-HT

Manufacturer Part NumberISO7221C-HT
ManufacturerTexas Instruments
ISO7221C-HT datasheet
 


Specifications of ISO7221C-HT

Number Of Channels2Channel Configuration1/1
Insulation Rating(vrms)2500Supply Voltage(s)(v)3.3, 5
Datarate(mbps)25Input Noise FilterYes
Prop Delay(max)(ns)53Ttl/cmos Input ThresholdTTL
Pin/package8SOICSignaling Rate(mbps)25
# Of Tx/rx2Vcc(min)(v)3
Vcc(max)(v)5.5Thermal ShutdownNo
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FEATURES
1
1-, 5- and 25-Mbps Signaling Rate Options
– Low Channel-to-Channel Output Skew;
1 ns max
– Low Pulse-Width Distortion (PWD);
1 ns max
– Low Jitter Content; 1 ns Typ at 150 Mbps
4000-V
Isolation, 560 V
peak
peak
– UL 1577 Approved
– 50-kV/μs Typical Transient Immunity
Operates with 3.3-V or 5-V Supplies
4-kV ESD Protection
High Electromagnetic Immunity
APPLICATIONS
Down-Hole Drilling
High Temperature Environments
DESCRIPTION
The ISO7221 is a dual-channel digital isolator. To facilitate PCB layout, the channels are oriented in the opposite
directions. This device has a logic input and output buffer separated by TI’s silicon-dioxide (SiO
barrier, providing galvanic isolation of up to 4000 V. Used in conjunction with isolated power supplies, this device
blocks high voltage, isolates grounds, and prevents 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 every 4 μs, the input is assumed to be
unpowered or not being actively driven, and the failsafe circuit drives the output to a logic high state.
The small capacitance and resulting time constant provide fast operation with signaling rates available from
(3)
0 Mbps (dc) to 150 Mbps.
The A-, B- and C-option devices have TTL input thresholds and a noise filter at the
input that prevents transient pulses from being passed to the output of the device. The M-option devices have
CMOS V
/2 input thresholds and do not have the input noise-filter and the additional propagation delay.
CC
(3) The signaling rate of a line is the number of voltage transitions that are made per second expressed in the units bps (bits per second).
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.
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.
DUAL DIGITAL ISOLATOR
Check for Samples:
ISO7221C-HT
SUPPORTS EXTREME TEMPERATURE
APPLICATIONS
Controlled Baseline
One Assembly/Test Site
One Fabrication Site
Available in Extreme (–55°C/175°C)
Temperature Range
V
Extended Product Life Cycle
IORM
Extended Product-Change Notification
Product Traceability
Texas Instruments high temperature products
utilize highly optimized silicon (die) solutions
with design and process enhancements to
maximize performance over extended
temperatures.
(1) Custom temperature ranges available.
(2) Device is qualified to ensure reliable operation for 1000 hours
at maximum rated temperature. This includes, but is not
limited to temperature bake, temperature cycle, electro
migration, bond inter metallic life, and mold compound life.
Such qualification testing should not be viewed as justifying
use of this component beyond specified performance and
environmental limits.
ISO7221C-HT
SLLSE78 – APRIL 2011
(1) (2)
ISO7221C
V
1
8
V
CC1
CC2
OUTA
2
7
INA
INB
OUTB
3
6
GND2
GND1
4
5
) isolation
2
Copyright © 2011, Texas Instruments Incorporated

ISO7221C-HT Summary of contents

  • Page 1

    ... This includes, but is not limited to temperature bake, temperature cycle, electro migration, bond inter metallic life, and mold compound life. Such qualification testing should not be viewed as justifying use of this component beyond specified performance and environmental limits. ISO7221C-HT SLLSE78 – APRIL 2011 (1) (2) ISO7221C V 1 ...

  • Page 2

    ... V (TTL) SOIC-8 (CMOS compatible) REGULATORY INFORMATION UL (1) Electrostatic discharge JEDEC Standard 22, Test Method A114-C.01 JEDEC Standard 22, Test Method C101 ANSI/ESDS5.2-1996 Product Folder Link(s) :ISO7221C-HT www.ti.com Filter Pulse Width Demodulation Carrier Detect Data MUX AC Detect OUT Output Buffer MARKED ...

  • Page 3

    ... V, See Figure and V at 5-V OPERATION CC1 CC2 TEST CONDITIONS See Figure 1 See Figure 1 See Figure 1 See Figure 1 See Figure 2 Product Folder Link(s) :ISO7221C-HT ISO7221C-HT SLLSE78 – APRIL 2011 MIN TYP MAX UNIT 3 5 – Mbps 2 ...

  • Page 4

    ... IOL = 4 mA, See Figure 1 IOL = 20 μA, See Figure 1 IN from from 0.4 sin (4E6π See Figure Product Folder Link(s) :ISO7221C-HT www.ti.com OPERATION MIN TYP MAX – 0.8 CC – 0 0.4 0.1 150 11 – ...

  • Page 5

    ... See Figure and V at 3.3 V CC1 CC2 TEST CONDITIONS See Figure 1 See Figure 1 See Figure 2 Product Folder Link(s) :ISO7221C-HT ISO7221C-HT SLLSE78 – APRIL 2011 MIN TYP MAX UNIT 0 μs ...

  • Page 6

    ... L NOTE 0.1 F± 0.1 F± OUT IN NOTE A GND1 GND2 V CM Tektronix OUT 784D Jitter 16 – 1. Transition time is 800 ps. Product Folder Link(s) :ISO7221C-HT www.ti.com 1 PHL PLH V 90% OH 50% 50% 10 ≤ 3 ...

  • Page 7

    ... TEST CONDITIONS (1) Low-K Thermal Resistance High-K Thermal Resistance (1) Table 1. Function Table OUTPUT SIDE V INPUT Open PU X Product Folder Link(s) :ISO7221C-HT ISO7221C-HT SLLSE78 – APRIL 2011 Output CC2 8 W OUT 13 W MIN TYP MAX UNIT 212 122 °C/W 37 69.1 OUTPUT OUT ...

  • Page 8

    ... & t 3.3-V V pLH pHL 1.1 1.05 1 125 175 -60 Product Folder Link(s) :ISO7221C-HT www.ti.com 5-V RMS SUPPLY CURRENT vs SIGNALING RATE (Mbps) ISO7220x I CC2 ISO7221x I CC1&2 ISO7220x I CC1 Signaling Rate - Mbps Figure 6. vs FREE-AIR TEMPERATURE 5-V V th+ 3.3 Load 5-V V th- th- ...

  • Page 9

    ... OUT Figure 11. Product Folder Link(s) :ISO7221C-HT ISO7221C-HT SLLSE78 – APRIL 2011 HIGH-LEVEL OUTPUT CURRENT vs HIGH-LEVEL OUTPUT VOLTAGE 15 pF Load T = 25° 3 OUT Figure 10 3 Submit Documentation Feedback ...

  • Page 10

    ... Submit Documentation Feedback APPLICATION INFORMATION max . max . from from Vcc Vcc OUTA INA 2 7 OUTB INB ISO 7221 Product Folder Link(s) :ISO7221C-HT www.ti.com 0 INPUT OUTPUT GND 2 Copyright © 2011, Texas Instruments Incorporated ...

  • Page 11

    ... 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. Copyright © 2011, Texas Instruments Incorporated ISOLATION GLOSSARY Product Folder Link(s) :ISO7221C-HT ISO7221C-HT SLLSE78 – APRIL 2011 Submit Documentation Feedback 11 ...

  • Page 12

    ... II: Local Level — Portable equipment etc. III: Distribution Level — Fixed installation IV: Primary Supply Level — Overhead lines, cable systems Each category should be subject to smaller transients than the category above. 12 Submit Documentation Feedback Product Folder Link(s) :ISO7221C-HT www.ti.com Copyright © 2011, Texas Instruments Incorporated ...

  • Page 13

    ... 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 ISO7221C-HT : Catalog: ISO7221C • ...

  • Page 14

    Catalog - TI's standard catalog product Automotive - Q100 devices qualified for high-reliability automotive applications targeting zero defects • PACKAGE OPTION ADDENDUM Addendum-Page 2 20-Feb-2012 ...

  • Page 15

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  • Page 16

    ... 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’ ...