ISO7421FE 低消費電力、デュアル・チャネル・デジタル・アイソレータ | TIJ.co.jp

ISO7421FE (供給中)

低消費電力、デュアル・チャネル・デジタル・アイソレータ

低消費電力、デュアル・チャネル・デジタル・アイソレータ - ISO7421FE
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推奨代替製品

  • 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、電源電圧範囲の拡大、耐性および堅牢性を向上したピン互換のアップグレード製品

概要

ISO742x provide galvanic isolation up to 2500 VRMS for 1 minute per UL and 4242 VPK per VDE. These devices have two isolated channels. Each 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. ISO7420 has both channels in the same direction while ISO7421 has the two channels in opposite direction. In case of input power or signal loss, default output is 'low' for devices with suffix 'F' and 'high' for devices without suffix 'F'. ISO742x have no integrated noise filter and thus have fast propagation delays.

These devices have TTL input thresholds and operate from 3-V to 5.5-V supplies. All inputs are 5-V tolerant when supplied from a 3.3-V supply.

特長

  • Signaling Rate > 50 Mbps
  • Default Output 'High' and 'Low' Options
  • Low Power Consumption: Typical ICC per Channel (3.3-V Supplies):
    • ISO7420: 1.4 mA at 1 Mbps, 2.5 mA at 25 Mbps
    • ISO7421: 1.8 mA at 1 Mbps, 2.8 mA at 25 Mbps
  • Low Propagation Delay: 7 ns Typical
  • Low Pulse Skew: 200 ps Typical
  • Wide TA Range Specified: –40°C to 125°C
  • 50-KV/μs Transient Immunity, Typical
  • Isolation Barrier Life: > 25 Years
  • Operates from 3-V to 5.5-V Supply 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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機能一覧 他の製品と比較 デジタル・アイソレーション

 
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)
ISO7421FE ISO7421 ISO7421E
No     No     No    
2     2     2    
1/1     1/1     1/1    
2500     2500     2500    
4000     4000     4000    
50     1     50    
1.8     1.5     1.8    
1.8     1.5     1.8    
7     9     7    
Low     High     High    
3.3     3.3     3.3    
5     5     5    
Catalog     Catalog     Catalog    
-40 to 125     -40 to 125     -40 to 125