現在提供此產品的更新版本

open-in-new 比較替代產品
可直接投入的替代產品,相較於所比較的裝置,具備升級功能
ISO6721 現行 通用型雙通道 1/1 數位隔離器 Pin-to-pin upgrade with higher isolation, stronger CMTI, wider supply range and better immunity

產品詳細資料

Rating Catalog 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) -40 to 125 Supply voltage (max) (V) 5 Supply voltage (min) (V) 3.3 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 Catalog 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) -40 to 125 Supply voltage (max) (V) 5 Supply voltage (min) (V) 3.3 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):
    • 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

All other trademarks are the property of their respective owners

  • 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

All other trademarks are the property of their respective owners

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.

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.

下載 觀看有字幕稿的影片 影片

技術文件

star =TI 所選的此產品重要文件
找不到結果。請清除您的搜尋條件,然後再試一次。
檢視所有 11
類型 標題 日期
* Data sheet ISO742x Low-Power Dual-Channel Digital Isolators datasheet (Rev. I) PDF | HTML 2015年 7月 16日
Certificate VDE Certificate for Basic Isolation for DIN EN IEC 60747-17 (Rev. X) 2025年 1月 8日
White paper Improve Your System Performance by Replacing Optocouplers with Digital Isolators (Rev. C) PDF | HTML 2023年 9月 7日
Certificate CSA Certificate for ISO742xD 2023年 3月 15日
Certificate CQC Certificate for ISO154xD, ISO742xD, ISO71xxDBQ (Rev. A) 2023年 2月 7日
Certificate UL Certificate of Compliance File E181974 Vol 4 Sec 3 2022年 8月 8日
White paper Why are Digital Isolators Certified to Meet Electrical Equipment Standards? 2021年 11月 16日
White paper Distance Through Insulation: How Digital Isolators Meet Certification Requiremen PDF | HTML 2021年 6月 11日
EVM User's guide Universal Digital Isolator Evaluation Module PDF | HTML 2021年 3月 4日
Technical article Who tampered with my PLC? Are industrial control systems too flexible? PDF | HTML 2016年 8月 5日
EVM User's guide Dual-Channel Digital Isolator EVM (Rev. D) 2013年 7月 8日

設計與開發

如需其他條款或必要資源,請按一下下方的任何標題以檢視詳細頁面 (如有)。

開發板

DIGI-ISO-EVM — 通用數位隔離器評估模組

DIGI-ISO-EVM 是一款評估模組 (EVM),可評估任何 TI 單通道、雙通道、三通道、四通道或六通道數位隔離器裝置,並提供五種不同封裝 - 8 接腳窄體 SOIC (D)、8 接腳寬體 SOIC (DWV)、16 接腳寬體 SOIC (DWW)、16 接腳超寬體 SOIC (DWW) 和 16 接腳 (DBQ) 封裝。EVM 具備足夠 Berg 接腳選項,可用於評估具最少外部零組件的裝置。

使用指南: PDF | HTML
模擬型號

ISO7421 IBIS Model (Rev. A)

SLOM200A.ZIP (28 KB) - IBIS Model
參考設計

TIDA-00472 — 大型電容器縮減 30% 的 230V/250W、Hi-η 無感測器無刷 DC 馬達驅動器參考設計

The TIDA-00472 is a discrete IGBT-based three-phase inverter for driving brushless DC (BLDC) motors rated up to 250 W, for example, used in cooker hoods, using a sensor-less, trapezoidal control method. The design provides software implementation for DC bus voltage ripple compensation resulting in (...)
Design guide: PDF
電路圖: PDF
參考設計

TIDA-00447 — 24V、100W/30W 雙無感測器無刷 DC 馬達驅動參考設計

TIDA-00447 is a 24V, dual Brushless DC (BLDC) motor drive reference design to be used in major home appliances to drive low voltage BLDC motors such as pumps and fans, e.g. for circulation pump and drain pump of dishwashers. The power stages of motor drive are designed for 100W and 30W of (...)
Design guide: PDF
電路圖: PDF
參考設計

TIDM-METROLOGY-HOST — 具有隔離能量量測的單相電錶

電錶開發人員通常偏好將電能測量功能與主機處理器功能分開,例如 ANSI/IEC 資料表、DLMS/COSEM、費率管理和通訊。此設計展示了使用獨立計量處理器和主機處理器來保持這些電錶功能分離的方法。設計隨附的韌體可管理所有必要功能,以及處理器間的同步化。此設計也示範了如何隔離兩個處理器之間的通訊,以達到必要的安全要求。最後,此設計展示了在 MSP430 MCU 上使用 USB 介面進行電錶校準的方法。透過重複使用此參考設計,工程師將能夠更快速地開發具有隔離計量功能的智慧電錶。
Design guide: PDF
電路圖: PDF
參考設計

TIDA-00601 — 具有隔離分流感測器的多相能源量測參考設計

TIDA-00601 參考設計實作了具有隔離式分流感測器的 0.5% 級三相電能量測系統。  隔離的方式是透過使用隔離式 ΔΣ 調變器,將輸出電路與輸入電路電容隔離。  電能量測 SoC 從隔離式調變器中取得不同的位元串流,並使用其板載數位濾波器產生 ADC 取樣讀數。  電能量測 SoC 也可用於感測電壓、計算量測參數值、驅動電路板的 LCD,以及透過電路板的隔離式 RS-232 電路與 PC GUI 通訊。

此參考設計使用 ISO7420ISO7421。此參考設計也可搭配 ISO7320CISO7321C 使用。

此參考設計使用 AMC1304M05。此參考設計也可搭配 (...)

使用指南: PDF
電路圖: PDF
參考設計

TIDA-01552 — 適用於數位輸出模組的八通道 2A 高壓側驅動器參考設計

This eight-channel, parallel, 2-A, high-side, digital output reference design for factory automation applications like PLCs shows the diagnostic features and the power density of new Texas Instruments high-side driver components (such as TPS27S100). Each output can individually measure the output (...)
Design guide: PDF
電路圖: PDF
參考設計

TIDA-00170 — 適用於可編程邏輯控制器 (PLC) 的 16 位元類比混合輸入輸出模組參考設計

The TIDA-00170 is a reference design for industrial control Analog Mixed Input Output Modules. The design implements four channel analog input & two channel analog output. The analog input channels can measure all standard industrial voltages up to ±10V and current inputs up to 24mA. The (...)
Design guide: PDF
電路圖: PDF
參考設計

TIDA-00236 — 適用 PLC 的低壓側 0.5A 八通道數位輸出模組

Digital Output Modules are a standard component in a PLC/PAC or DCS to control actuators, motors and other resistive, capacitive or inductive loads. Customers will benefit from this integrated protected low side drivers and the low pin count control interface which saves pins and isolation (...)
Design guide: PDF
電路圖: PDF
參考設計

TIDA-00163 — 隔離式 RS-232 至 UART 轉換器參考設計

This design implements an isolated data converter that utilizes residual power from the interface to power itself. This removes the requirement for expensive power transmission across the isolation boundary. By easily enabling the ubiquitous RS-232 connection on an electric meter, features like (...)
Design guide: PDF
電路圖: PDF
封裝 針腳 CAD 符號、佔位空間與 3D 模型
SOIC (D) 8 Ultra Librarian

訂購與品質

內含資訊:
  • RoHS
  • REACH
  • 產品標記
  • 鉛塗層/球物料
  • MSL 等級/回焊峰值
  • MTBF/FIT 估算值
  • 材料內容
  • 認證摘要
  • 進行中持續性的可靠性監測
內含資訊:
  • 晶圓廠位置
  • 組裝地點

建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。

支援與培訓

內含 TI 工程師技術支援的 TI E2E™ 論壇

內容係由 TI 和社群貢獻者依「現狀」提供,且不構成 TI 規範。檢視使用條款

若有關於品質、封裝或訂購 TI 產品的問題,請參閱 TI 支援。​​​​​​​​​​​​​​

影片