The ISO7420, ISO7420M and ISO7421 provide galvanic isolation up to 2500 V_RMS 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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• Integrated isolated power
• No
• Number of channels (#)
• 2
• Forward/reverse channels
• 2 forward / 0 reverse
• Isolation rating (Vrms)
• 2500
• Data rate (Max) (Mbps)
• 1
• Rating
• Catalog
• Surge voltage capability (Vpk)
• 4000
• Current consumption per channel (DC) (Typ) (mA)
• 1.1
• Current consumption per channel (1 Mbps) (Typ) (mA)
• 1.1
• Operating temperature range (C)
• -40 to 125
• Default output
• High
• Supply voltage (Max) (V)
• 5
• Supply voltage (Min) (V)
• 3.3
• Propagation delay (Typ) (ns)
• 9

ISO7420M的完整型号有：ISO7420MD、ISO7420MDR，以下是这些产品的关键参数及官网采购报价：

ISO7420MD，工作温度：-40 to 125，封装：SOIC (D)-8，包装数量MPQ：75个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网ISO7420MD的批量USD价格：1.708（1000+）

ISO7420MDR，工作温度：-40 to 125，封装：SOIC (D)-8，包装数量MPQ：2500个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网ISO7420MDR的批量USD价格：1.455（1000+）

DIGI-ISO-EVM — Universal digital isolator evaluation module

DIGI-ISO-EVM 是一个评估模块，用于评估 TI 采用以下五种不同封装的任何单通道、双通道、三通道、四通道或六通道数字隔离器器件：8 引脚 NB SOIC (D)、8 引脚 WB SOIC (DWV)、16 引脚 WB SOIC (DW)、16 引脚 Ultra WB SOIC (DWW) 和 16 引脚 QSOP (DBQ) 封装。此 EVM 具有足够的 Berg 引脚选项，支持使用超少的外部元件来评估相应器件。

ISO722XEVM — ISO722X EVM 工作台

该评估模块 (EVM) 用于测试出厂时安装的 ISO7220M 双通道隔离器的参数。用户可以重新配置该 EVM，以便与任何 ISO7220X、ISO7221X 或 ISO742X 双通道隔离器配合使用。