ISO7421 2ch、1/1、1Mbps デジタル・アイソレータ |

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2ch、1/1、1Mbps デジタル・アイソレータ

2ch、1/1、1Mbps デジタル・アイソレータ - ISO7421


  • ISO7721  - このデバイスは、比較対象のデバイスと機能とピン配置が同一ですが、完全に同等ではありません。   絶縁性能の向上、CMTI の強化、拡大電源電圧範囲、耐性 / 堅牢性向上を可能にするピン互換アップグレード製品


The ISO7420, ISO7420M and ISO7421 provide galvanic isolation up to 2500 VRMS for 1 minute per UL. These digital isolators have 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, 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 suffix M indicates wide temperature range (–40°C to 125°C).

These devices 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.

Note: The ISO7420 and ISO7421 are specified for signaling rates up to 1 Mbps. Due to their fast response time, under most cases, these devices 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.


  • Highest Signaling Rate: 1 Mbps
  • Low Power Consumption, Typical ICC per Channel (3.3-V operation):
    • ISO7420: 1.1 mA, ISO7421: 1.5 mA
  • Low Propagation Delay – 9 ns Typical
  • Low Skew – 300 ps Typical
  • Wide TA Range: –40°C to 125°C (M-Grade)
  • 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

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他の製品と比較 デジタル・アイソレーション メール Excelへダウンロード
Part number オーダー・オプション Integrated isolated power Number of channels (#) Forward/reverse channels Isolation rating (Vrms) Surge voltage capability (Vpk) Data rate (Max) (Mbps) Current consumption per channel (DC) (Typ) (mA) Current consumption per channel (1 Mbps) (Typ) (mA) Propagation delay (Typ) (ns) Default output VCC (Min) (V) VCC (Max) (V) Rating Operating temperature range (C)
ISO7421 ご注文 No     2     1/1     2500     4000     1     1.5     1.5     9     High     3.3     5     Catalog     -40 to 125    
ISO7421E ご注文 No     2     1/1     2500     4000     50     1.8     1.8     7     High     3.3     5     Catalog     -40 to 125    
ISO7421FE ご注文 No     2     1/1     2500     4000     50     1.8     1.8     7     Low     3.3     5     Catalog     -40 to 125