ISO7421A-Q1 Datasheet, PDF (1/20 Pages) Texas Instruments – LOW-POWER DUAL DIGITAL ISOLATORS

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ISO7420-Q1
ISO7421A-Q1
SLLSE14A – MARCH 2012 – REVISED JUNE 2012
LOW-POWER DUAL DIGITAL ISOLATORS
FEATURES
1
• Qualified for Automotive Applications
• AEC-Q100 Qualified With the Following
Results:
– Device Temperature Grade 1: –40°C to
+125°C Ambient Operating Temperature
Range
– Device HBM ESD Classification Level H3A
– Device CDM ESD Classification Level C5
• High Signaling Rate: 50 Mbps
• Low Power Consumption
• Low Propagation Delay – 9 ns (Typ)
• Low Skew – 300 ps (Typ)
• 4 kVpeak Maximum Isolation, 2.5 kVrms per UL
1577, IEC/VDE and CSA Approved, IEC 60950-
1, IEC 61010-1 End Equipment Standards
Approved. All Approvals Pending.
• 50 kV/μs Transient Immunity (Typ)
• Over 25-Year Isolation Integrity at Rated
Voltage
• Operates From 3-V to 5.5-V Supply and Logic
Levels
V_CC1
INA
INB
GND1
ISO7420
D PACKAGE
(TOP VIEW)
1
8
2
7
3
6
4
5
V_CC2
OUTA
OUTB
GND2
V_CC1
OUTA
INB
GND1
ISO7421A
D PACKAGE
(TOP VIEW)
1
8
2
7
3
6
4
5
V_CC2
INA
OUTB
GND2
DESCRIPTION
The ISO7420 and ISO7421A provide galvanic isolation up to 2.5 kVrms for 1 minute per UL. These digital
isolators have two isolated channels with bidirectional channel configuration. 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 circuit from entering the local
ground and interfering with or damaging sensitive circuitry.
The devices have TTL input thresholds and require two supply voltages from 3 V to 5.5 V, or any combination.
All inputs are 5-V tolerant when supplied from a 3-V supply.
T_A
–40°C to 125°C
SOIC – D
ORDERING INFORMATION⁽¹⁾
PACKAGE ⁽²⁾
ORDERABLE PART NUMBER
Reel of 2500
ISO7420QDRQ1
ISO7421AQDRQ1
TOP-SIDE MARKING
PREVIEW
7421AQ
(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
web site at www.ti.com.
(2) Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.
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.
Copyright © 2012, Texas Instruments Incorporated