ISO121x Isolated Digital Input Receivers

Texas Instruments ISO121x Isolated Digital Input Receivers are isolated 24V to 60V digital input receivers, compliant with IEC 61131-2 Type 1, 2, and 3 characteristics. These devices are suitable for programmable logic controllers (PLCs) and motor-control digital input modules. Unlike traditional optocoupler solutions with discrete, imprecise current limiting circuitry, the ISO121x devices provide a simple, low-power solution with an accurate current limit. This feature allows for the design of compact and high-density I/O modules. These devices do not require a field-side power supply and are configurable as sourcing or sinking inputs.

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Description Datasheet Availability Pricing (SGD) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Series
Mounting Style
Package/Case
Number of Channels
Polarity
Data Rate
Isolation Voltage
Isolation Type
Supply Voltage - Max
Supply Voltage - Min
Operating Supply Current
Propagation Delay Time
Minimum Operating Temperature
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Packaging
Texas Instruments Digital Isolators Single-channel Isola ted 24-V to 60-V di A 595-ISO1211DR
Datasheet
138,102In Stock
Min.: 1
Mult.: 1

ISO1211 SMD/SMT SOIC-8 1 Channel Unidirectional 4 Mb/s 2500 Vrms Capacitive Coupling 5.5 V 2.25 V 600 uA 10 ns - 55 C + 125 C Tube
Texas Instruments Digital Isolators Single-channel Isola ted 24-V to 60-V di
Datasheet
2,282In Stock
MouseReel Available
Min.: 1
Mult.: 1
Max.: 50
: 2,500

ISO1211 SMD/SMT SOIC-8 1 Channel Unidirectional 4 Mb/s 2500 Vrms Capacitive Coupling 5.5 V 2.25 V 600 uA 10 ns - 55 C + 125 C Reel, Cut Tape, MouseReel
Texas Instruments Digital Isolators Dual-channel Isolate d 24-V to 60-V digi
Datasheet
2,426In Stock
MouseReel Available
Min.: 1
Mult.: 1
Max.: 25
: 2,500

ISO1212 SMD/SMT SSOP-16 2 Channel Unidirectional 4 Mb/s 2500 Vrms Capacitive Coupling 5.5 V 2.25 V 1.2 mA 10 ns - 55 C + 125 C Reel, Cut Tape, MouseReel
Texas Instruments Digital Isolators Dual-channel Isolate d 24-V to 60-V digi
Datasheet
32,927In Stock
Min.: 1
Mult.: 1

ISO1212 SMD/SMT SSOP-16 2 Channel Unidirectional 4 Mb/s 2500 Vrms Capacitive Coupling 5.5 V 2.25 V 1.2 mA 10 ns - 55 C + 125 C Tube
Texas Instruments Digital Isolators Single-channel Isola ted 24-V to 60-V di A 595-ISO1211D
Datasheet
1,192In Stock
7,500Expected 8/6/2026
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

ISO1211 SMD/SMT SOIC-8 1 Channel Unidirectional 4 Mb/s 2500 Vrms Capacitive Coupling 5.5 V 2.25 V 600 uA 10 ns - 55 C + 125 C Reel, Cut Tape, MouseReel
Texas Instruments Digital Isolators Dual-channel Isolate d 24-V to 60-V digi
Datasheet
1,695In Stock
10,000Expected 8/6/2026
MouseReel Available
Min.: 1
Mult.: 1
: 2,500

ISO1212 SMD/SMT SSOP-16 2 Channel Unidirectional 4 Mb/s 2500 Vrms Capacitive Coupling 5.5 V 2.25 V 1.2 mA 10 ns - 55 C + 125 C Reel, Cut Tape, MouseReel