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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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Select	Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (CHF) 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	Maximum Operating Temperature	Packaging
	Digital Isolators Dual-channel Isolate d 24-V to 60-V digi ISO1212DBQ Texas Instruments 1: CHF 1.31 31’564In Stock	Mfr. Part No. ISO1212DBQ Mouser Part No 595-ISO1212DBQ	Texas Instruments	Digital Isolators Dual-channel Isolate d 24-V to 60-V digi Learn More about Texas Instruments ti iso1211 iso1212 receivers	Datasheet	31’564In Stock	CHF 1.31 CHF 1.02 CHF 0.774 CHF 0.725 View CHF 0.698 CHF 0.681 CHF 0.673 CHF 0.647	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
	Digital Isolators Single-channel Isola ted 24-V to 60-V di A 595-ISO1211DR ISO1211D Texas Instruments 1: CHF 1.20 136’645In Stock	Mfr. Part No. ISO1211D Mouser Part No 595-ISO1211D	Texas Instruments	Digital Isolators Single-channel Isola ted 24-V to 60-V di A 595-ISO1211DR Learn More about Texas Instruments ti iso1211 iso1212 receivers	Datasheet	136’645In Stock	CHF 1.20 CHF 0.877 CHF 0.697 CHF 0.651 View CHF 0.623 CHF 0.601 CHF 0.59 CHF 0.56 CHF 0.553	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
	Digital Isolators Single-channel Isola ted 24-V to 60-V di ISO1211SDR Texas Instruments 1: CHF 1.21 2’089In Stock New Product	Mfr. Part No. ISO1211SDR Mouser Part No 595-ISO1211SDR New Product	Texas Instruments	Digital Isolators Single-channel Isola ted 24-V to 60-V di Learn More about Texas Instruments ti iso1211 iso1212 receivers	Datasheet	2’089In Stock	Cut Tape CHF 1.21 CHF 0.885 CHF 0.797 CHF 0.706 View Reel CHF 0.63 CHF 0.664 CHF 0.637 CHF 0.63 CHF 0.63 MouseReel Available	Min.: 1 Mult.: 1 Max.: 1’001 : 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
	Digital Isolators Single-channel Isola ted 24-V to 60-V di A 595-ISO1211D ISO1211DR Texas Instruments 1: CHF 1.06 5’717In Stock	Mfr. Part No. ISO1211DR Mouser Part No 595-ISO1211DR	Texas Instruments	Digital Isolators Single-channel Isola ted 24-V to 60-V di A 595-ISO1211D Learn More about Texas Instruments ti iso1211 iso1212 receivers	Datasheet	5’717In Stock	Cut Tape CHF 1.06 CHF 0.763 CHF 0.691 CHF 0.611 Reel CHF 0.51 View CHF 0.573 CHF 0.549 CHF 0.532 CHF 0.498 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
	Digital Isolators Dual-channel Isolate d 24-V to 60-V digi ISO1212DBQR Texas Instruments 1: CHF 1.07 224In Stock 12’500Expected 12/21/2026	Mfr. Part No. ISO1212DBQR Mouser Part No 595-ISO1212DBQR	Texas Instruments	Digital Isolators Dual-channel Isolate d 24-V to 60-V digi Learn More about Texas Instruments ti iso1211 iso1212 receivers	Datasheet	224In Stock 12’500Expected 12/21/2026	Cut Tape CHF 1.07 CHF 0.775 CHF 0.702 CHF 0.622 Reel CHF 0.534 View CHF 0.584 CHF 0.561 CHF 0.544 CHF 0.522 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
	Digital Isolators Dual-channel Isolate d 24-V to 60-V digi ISO1212SDBQR Texas Instruments 1: CHF 1.25 46In Stock 2’500Expected 5/3/2027 New Product	Mfr. Part No. ISO1212SDBQR Mouser Part No 595-ISO1212SDBQR New Product	Texas Instruments	Digital Isolators Dual-channel Isolate d 24-V to 60-V digi Learn More about Texas Instruments ti iso1211 iso1212 receivers	Datasheet	46In Stock 2’500Expected 5/3/2027	Cut Tape CHF 1.25 CHF 0.917 CHF 0.837 CHF 0.737 View Reel CHF 0.657 CHF 0.692 CHF 0.665 CHF 0.657 CHF 0.657 MouseReel Available	Min.: 1 Mult.: 1 Max.: 1’001 : 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