ISO1228

ACTIVO

Receptor de entrada digital aislado de 24 V a 36 V y 8 canales con limitación de corriente e indicac

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Hoja de datos

document-pdfAcrobat ISO1228 Eight-Channel Isolated Digital Input With Current Limit and Diagnostics datasheet (Rev. B) (Inglés) PDF | HTML

ISO1228

ACTIVO

Hoja de datos

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Detalles del producto

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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Documentación principal	Tipo	Título	Opciones de formato	Fecha
*	Hoja de datos	ISO1228 Eight-Channel Isolated Digital Input With Current Limit and Diagnostics datasheet (Rev. B)	PDF \| HTML	5/09/2025
	Certificado	VDE Certificate for Basic Isolation for DIN EN IEC 60747-17 (Rev. AA)		11/06/2026
	Certificado	TUV Certificate for Isolation Devices (Rev. M)		7/05/2026
	Certificado	UL Certificate of Compliance File E181974 Vol 4 Sec 6 (Rev. S)		7/05/2026
	Certificado	CSA Certificate for ISO1228DFB		8/01/2026
	Certificado	CQC Certificate for ISO1228DFBR		19/08/2025
	Nota sobre la aplicación	How to Use Bi-directional Input Signal for Digital Input Modules	PDF \| HTML	30/06/2025
	Application brief	How To Simplify Isolated 24V PLC Digital Input Module Designs (Rev. D)	PDF \| HTML	30/06/2025
	Nota sobre la aplicación	How to Dynamically Switch Between Serial and Parallel Modes Using ISO1228	PDF \| HTML	21/04/2025
	Application brief	Space-Saving Design Techniques for Multichannel High-Voltage Digital Input Modules (Rev. C)	PDF \| HTML	11/11/2024
	Application brief	Digital Input Module, Digital Output Module	PDF \| HTML	6/03/2024
	Certificado	ISO1228DFBEVM EU RoHS Declaration of Conformity (DoC)		13/04/2023

Diseño y desarrollo

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Placa de evaluación

ISO1228DFBEVM — Módulo de evaluación del ISO1228 para entradas digitales aisladas de 8 canales en modo disipador

El ISO1228DFBEVM es un módulo de evaluación (EVM) que se utiliza para evaluar el receptor de entrada digital aislada de 8 canales ISO1228 en el encapsulado DFB SSOP de 38 pines. El EVM tiene dimensiones adicionales que dan al usuario flexibilidad para añadir componentes para probar una variedad de (...)

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