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隔離式介面 IC
隔離式數位輸入

ISO1228

現行

具有電流限制和 LED 指示的八通道隔離 24-V 至 36-V 數位輸入接收器

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產品規格表

ISO1228

現行
產品規格表 立即訂購

產品詳細資料

Rating Catalog Isolation rating Basic Number of channels 8 Forward/reverse channels 8/0 Data rate (max) (Mbps) 1.5 Working isolation voltage (VIOWM) (Vrms) 450 Surge isolation voltage (VIOSM) (VPK) 5000 Transient isolation voltage (VIOTM) (VPK) 4242 Withstand isolation voltage (VISO) (Vrms) 3000 CMTI (min) (kV/µs) 50 Operating temperature range (°C) -40 to 125 Propagation delay time (typ) (µs) 0.78
Rating Catalog Isolation rating Basic Number of channels 8 Forward/reverse channels 8/0 Data rate (max) (Mbps) 1.5 Working isolation voltage (VIOWM) (Vrms) 450 Surge isolation voltage (VIOSM) (VPK) 5000 Transient isolation voltage (VIOTM) (VPK) 4242 Withstand isolation voltage (VISO) (Vrms) 3000 CMTI (min) (kV/µs) 50 Operating temperature range (°C) -40 to 125 Propagation delay time (typ) (µs) 0.78
SSOP (DFB) 38 59.4 mm² (9.9 mm × 6 mm)
  • Configurable IEC 61131-2 eight Type 1/3 or four Type 2 Isolated Digital Inputs
  • Low Power and Heat Dissipation
    • Selectable input current limit
    • Fieldside LED drivers using input current
  • Configurable sinking or sourcing type inputs
  • Wire-break detection in sink mode
  • Integrated field-side power loss detection
  • Programmable Glitch Filters
  • Built in CRC check across barrier
  • Serial SPI and Parallel output options
    • Supports SPI daisy chaining
    • Supports SPI burst mode
  • Integrated IEC ESD and Surge Protection
  • High CMTI(Typ): 75kV/µs
  • VCC1 Logic supply voltage range: 1.71V to 5.5V
  • AVCC field supply voltage range (sink mode): 8.5V to 36V
  • AVCC field supply voltage range (source mode): 13V to 36V
  • Ambient temperature range: –40°C to 125°C
  • Small Footprint 38-SSOP Package
  • Safety-related certifications:
    • 4242VPK VIOTM and 637VPK VIORM per DIN EN IEC 60747-17 (VDE 0884-17)
    • 3000-VRMS Isolation for 1 Minute per UL 1577
    • IEC 62368-1, IEC 61010-1 Certifications
    • All Certifications Planned
  • Configurable IEC 61131-2 eight Type 1/3 or four Type 2 Isolated Digital Inputs
  • Low Power and Heat Dissipation
    • Selectable input current limit
    • Fieldside LED drivers using input current
  • Configurable sinking or sourcing type inputs
  • Wire-break detection in sink mode
  • Integrated field-side power loss detection
  • Programmable Glitch Filters
  • Built in CRC check across barrier
  • Serial SPI and Parallel output options
    • Supports SPI daisy chaining
    • Supports SPI burst mode
  • Integrated IEC ESD and Surge Protection
  • High CMTI(Typ): 75kV/µs
  • VCC1 Logic supply voltage range: 1.71V to 5.5V
  • AVCC field supply voltage range (sink mode): 8.5V to 36V
  • AVCC field supply voltage range (source mode): 13V to 36V
  • Ambient temperature range: –40°C to 125°C
  • Small Footprint 38-SSOP Package
  • Safety-related certifications:
    • 4242VPK VIOTM and 637VPK VIORM per DIN EN IEC 60747-17 (VDE 0884-17)
    • 3000-VRMS Isolation for 1 Minute per UL 1577
    • IEC 62368-1, IEC 61010-1 Certifications
    • All Certifications Planned

The ISO1228 is an eight-channel isolated 24V digital input receiver, configurable to IEC 61131-2 Type 1, and 3 characteristics or four-channel Type 2 characteristics. The ISO1228 includes resistor-programmable accurate current limit and field side input-current-powered LED indication to reduce system power dissipation and reduce board temperatures. ISO1228 can be configured for either sourcing or sinking type digital inputs with minimal hardware change. Both serial SPI and parallel output modes are available. Wire-break detection, fieldside supply monitoring and built-in CRC across barriers help improve system reliability. In-built glitch filters and integrated IEC-ESD and surge protection help to achieve a robust design.

The ISO1228 operates over the logic supply range of 1.71V to 5.5V, supporting 1.8V, 2.5V, 3.3V, and 5V controllers. Field side output voltage range supported is 8.5V to 36V in sink mode and 13V to 36V in source mode.ISO1228 supports up to 1.5Mbps data rates passing a minimum pulse width of 667ns for high-speed operation.

The ISO1228 is an eight-channel isolated 24V digital input receiver, configurable to IEC 61131-2 Type 1, and 3 characteristics or four-channel Type 2 characteristics. The ISO1228 includes resistor-programmable accurate current limit and field side input-current-powered LED indication to reduce system power dissipation and reduce board temperatures. ISO1228 can be configured for either sourcing or sinking type digital inputs with minimal hardware change. Both serial SPI and parallel output modes are available. Wire-break detection, fieldside supply monitoring and built-in CRC across barriers help improve system reliability. In-built glitch filters and integrated IEC-ESD and surge protection help to achieve a robust design.

The ISO1228 operates over the logic supply range of 1.71V to 5.5V, supporting 1.8V, 2.5V, 3.3V, and 5V controllers. Field side output voltage range supported is 8.5V to 36V in sink mode and 13V to 36V in source mode.ISO1228 supports up to 1.5Mbps data rates passing a minimum pulse width of 667ns for high-speed operation.
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重要文件 類型 標題 格式選項 下載最新的英文版本 日期
* 資料表 ISO1228 Eight-Channel Isolated Digital Input With Current Limit and Diagnostics datasheet (Rev. B) PDF | HTML 2025/9/5
證書 VDE Certificate for Basic Isolation for DIN EN IEC 60747-17 (Rev. AA) 2026/6/11
證書 TUV Certificate for Isolation Devices (Rev. M) 2026/5/7
證書 UL Certificate of Compliance File E181974 Vol 4 Sec 6 (Rev. S) 2026/5/7
證書 CSA Certificate for ISO1228DFB 2026/1/8
證書 CQC Certificate for ISO1228DFBR 2025/8/19
應用說明 How to Use Bi-directional Input Signal for Digital Input Modules PDF | HTML 2025/6/30
Application brief How To Simplify Isolated 24V PLC Digital Input Module Designs (Rev. D) PDF | HTML 2025/6/30
應用說明 How to Dynamically Switch Between Serial and Parallel Modes Using ISO1228 PDF | HTML 2025/4/21
Application brief Space-Saving Design Techniques for Multichannel High-Voltage Digital Input Modules (Rev. C) PDF | HTML 2024/11/11
Application brief Digital Input Module, Digital Output Module PDF | HTML 2024/3/6
證書 ISO1228DFBEVM EU RoHS Declaration of Conformity (DoC) 2023/4/13

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開發板

ISO1228DFBEVM — 適用於汲極模式下 8 通道隔離數位輸入的 ISO1228 評估模組

ISO1228DFBEVM 是採用 38 接腳 DFB SSOP 封裝，用於評估 8 通道隔離式數位輸入接收器 ISO1228 的評估模組 (EVM)。EVM 提供額外體積，讓使用者能夠靈活新增元件，以測試各種常見應用。EVM 具備多個測試點和跨接器選項，可對配備最少外部元件的裝置進行評估。

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ISO1228EVM — 適用於汲極/源極模式下 8 通道隔離式數位輸入的 ISO1228 評估模組

ISO1228EVM 是採用 38 接腳 DFB SSOP 封裝，且為汲極/源極模式配置的八通道隔離式數位輸入接收器 ISO1228 的評估模組 (EVM)。EVM 提供額外體積，讓使用者能夠靈活新增元件，以測試各種常見應用。EVM 具備多個測試點和跨接器選項，可對配備最少外部元件的裝置進行評估。

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模擬型號

ISO1228 IBIS Model

SLLM506.ZIP (86 KB) - IBIS 模型
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計算工具

ISO1228-CALC — ISO1228 汲極閾值計算機

ISO1228 calculator for calculating voltage thresholds and resistor values for IEC 61131-2 standard
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SSOP (DFB) 38 Ultra Librarian
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