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ISO7421-EP

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Low-Power Dual Digital Isolators

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Data sheet

ISO7421-EP

ACTIVE
Data sheet Order now

Product details

Rating HiRel Enhanced Product Integrated isolated power No Isolation rating Basic Number of channels 2 Forward/reverse channels 1 forward / 1 reverse Default output High Data rate (max) (Mbps) 1 Surge isolation voltage (VIOSM) (VPK) 4000 Transient isolation voltage (VIOTM) (VPK) 4242 Withstand isolation voltage (VISO) (Vrms) 2500 CMTI (min) (V/µs) 25000 Operating temperature range (°C) -55 to 125 Supply voltage (max) (V) 5.5 Supply voltage (min) (V) 3 Propagation delay time (typ) (µs) 0.009 Current consumption per channel (DC) (typ) (mA) 1.5 Current consumption per channel (1 Mbps) (typ) (mA) 1.5 Creepage (min) (mm) 4 Clearance (min) (mm) 4
Rating HiRel Enhanced Product Integrated isolated power No Isolation rating Basic Number of channels 2 Forward/reverse channels 1 forward / 1 reverse Default output High Data rate (max) (Mbps) 1 Surge isolation voltage (VIOSM) (VPK) 4000 Transient isolation voltage (VIOTM) (VPK) 4242 Withstand isolation voltage (VISO) (Vrms) 2500 CMTI (min) (V/µs) 25000 Operating temperature range (°C) -55 to 125 Supply voltage (max) (V) 5.5 Supply voltage (min) (V) 3 Propagation delay time (typ) (µs) 0.009 Current consumption per channel (DC) (typ) (mA) 1.5 Current consumption per channel (1 Mbps) (typ) (mA) 1.5 Creepage (min) (mm) 4 Clearance (min) (mm) 4
SOIC (D) 8 29.4 mm² 4.9 x 6
  • Highest Signaling Rate: 1 Mbps
  • Low Power Consumption, Typical ICC per Channel (3.3-V Operation): 1.5 mA
  • Low Propagation Delay – 9 ns Typical
  • Low Skew – 300 ps Typical
  • Wide TJ Range: -55°C to 136°C
  • 50-kV/µs Transient Immunity, Typical
  • Over 25-Year Isolation Integrity at Rated Voltage
  • Operates From 3.3-V and 5-V Supply and Logic Levels
  • 3.3-V and 5-V Level Translation
  • Narrow Body SOIC-8 Package
  • Safety and Regulatory Approvals:
    • 4242 VPK Isolation per DIN V VDE V 0884-10 and DIN EN 61010-1
    • 2500 VRMS Isolation for 1 minute per UL 1577
    • CSA Component Acceptance Notice 5A, IEC 60950-1 and IEC 61010-1 Standards
    • CQC Certification per GB4943.1-2011
  • Highest Signaling Rate: 1 Mbps
  • Low Power Consumption, Typical ICC per Channel (3.3-V Operation): 1.5 mA
  • Low Propagation Delay – 9 ns Typical
  • Low Skew – 300 ps Typical
  • Wide TJ Range: -55°C to 136°C
  • 50-kV/µs Transient Immunity, Typical
  • Over 25-Year Isolation Integrity at Rated Voltage
  • Operates From 3.3-V and 5-V Supply and Logic Levels
  • 3.3-V and 5-V Level Translation
  • Narrow Body SOIC-8 Package
  • Safety and Regulatory Approvals:
    • 4242 VPK Isolation per DIN V VDE V 0884-10 and DIN EN 61010-1
    • 2500 VRMS Isolation for 1 minute per UL 1577
    • CSA Component Acceptance Notice 5A, IEC 60950-1 and IEC 61010-1 Standards
    • CQC Certification per GB4943.1-2011

The ISO7421-EP device provides galvanic isolation up to 2500 VRMS for 1 minute per UL. The ISO7421-EP device has two isolated channels. 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, the device prevents noise currents on a data bus or other circuit from entering the local ground and interfering with or damaging sensitive circuitry.

This device have TTL input thresholds and require two supply voltages, 3.3 or 5 V, or any combination. All inputs are 5-V tolerant when supplied from a 3.3-V supply.

The ISO7421-EP device is specified for signaling rates up to 1 Mbps. Due to its fast response time, under most cases, this device will also transmit data with much shorter pulse widths. Designers should add external filtering to remove spurious signals with input pulse duration <20 ns if desired.

The ISO7421-EP device provides galvanic isolation up to 2500 VRMS for 1 minute per UL. The ISO7421-EP device has two isolated channels. 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, the device prevents noise currents on a data bus or other circuit from entering the local ground and interfering with or damaging sensitive circuitry.

This device have TTL input thresholds and require two supply voltages, 3.3 or 5 V, or any combination. All inputs are 5-V tolerant when supplied from a 3.3-V supply.

The ISO7421-EP device is specified for signaling rates up to 1 Mbps. Due to its fast response time, under most cases, this device will also transmit data with much shorter pulse widths. Designers should add external filtering to remove spurious signals with input pulse duration <20 ns if desired.
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* Data sheet ISO7421-EP Low-Power Dual Digital Isolators datasheet PDF | HTML 01 Dec 2015
White paper Improve Your System Performance by Replacing Optocouplers with Digital Isolators (Rev. C) PDF | HTML 07 Sep 2023
White paper Why are Digital Isolators Certified to Meet Electrical Equipment Standards? 16 Nov 2021
White paper Distance Through Insulation: How Digital Isolators Meet Certification Requiremen PDF | HTML 11 Jun 2021
EVM User's guide Universal Digital Isolator Evaluation Module PDF | HTML 04 Mar 2021

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DIGI-ISO-EVM — Universal digital isolator evaluation module

DIGI-ISO-EVM is an evaluation module (EVM) used to evaluate any of the TI single-channel, dual-channel, triple-channel, quad-channel or six-channel digital isolator devices in five different packages - 8-pin narrow-body SOIC (D), 8-pin wide-body SOIC (DWV), 16-pin wide-body SOIC (DW), 16-pin ultra- (...)

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ISO7421 IBIS Model (Rev. A)

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