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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 (USD) 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: $2.12 30,257In Stock	Mfr. Part # ISO1212DBQ Mouser Part # 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	30,257In Stock	$2.12 $1.65 $1.25 $1.17 View $1.13 $1.10 $1.09 $1.05	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: $1.94 136,195In Stock	Mfr. Part # ISO1211D Mouser Part # 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	136,195In Stock	$1.94 $1.42 $1.13 $1.05 View $1.01 $0.971 $0.952 $0.904 $0.893	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: $1.95 2,087In Stock New Product	Mfr. Part # ISO1211SDR Mouser Part # 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	2,087In Stock	Cut Tape $1.95 $1.43 $1.29 $1.14 Reel $0.983 View $1.07 $1.03 $1.02 $0.971 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 Single-channel Isola ted 24-V to 60-V di A 595-ISO1211D ISO1211DR Texas Instruments 1: $1.70 5,423In Stock	Mfr. Part # ISO1211DR Mouser Part # 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	5,423In Stock	Cut Tape $1.70 $1.23 $1.12 $0.987 Reel $0.824 View $0.926 $0.888 $0.859 $0.805 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: $1.73 224In Stock 12,500Expected 12/21/2026	Mfr. Part # ISO1212DBQR Mouser Part # 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 $1.73 $1.25 $1.13 $1.00 Reel $0.863 View $0.943 $0.905 $0.879 $0.844 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: $2.03 162In Stock 2,500Expected 5/3/2027 New Product	Mfr. Part # ISO1212SDBQR Mouser Part # 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	162In Stock 2,500Expected 5/3/2027	Cut Tape $2.03 $1.48 $1.35 $1.19 View Reel $1.03 $1.12 $1.07 $1.06 $1.03 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