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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 (THB) 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 Single-channel Isola ted 24-V to 60-V di A 595-ISO1211DR ISO1211D Texas Instruments 1: ฿49.65 135,477In 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	135,477In Stock	฿49.65 ฿36.32 ฿28.86 ฿26.96 View ฿25.66 ฿24.89 ฿24.39 ฿23.16 ฿22.89	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 Dual-channel Isolate d 24-V to 60-V digi ISO1212DBQ Texas Instruments 1: ฿54.31 26,657In 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	26,657In Stock	฿54.31 ฿42.32 ฿32.05 ฿30.02 View ฿28.92 ฿28.22 ฿27.86 ฿26.79	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 ISO1211SDR Texas Instruments 1: ฿49.98 2,094In 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	2,094In Stock	Cut Tape ฿49.98 ฿36.65 ฿32.95 ฿29.22 Reel ฿25.19 View ฿27.46 ฿26.39 ฿26.06 ฿24.89 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: ฿43.65 5,388In 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	5,388In Stock	Cut Tape ฿43.65 ฿31.59 ฿28.59 ฿25.29 Reel ฿21.12 View ฿23.72 ฿22.76 ฿22.02 ฿20.63 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: ฿45.65 28In 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	28In Stock 12,500Expected 12/21/2026	Cut Tape ฿45.65 ฿32.95 ฿29.85 ฿26.42 Reel ฿22.42 View ฿24.79 ฿23.82 ฿23.26 ฿21.92 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: ฿51.98 162In Stock 2,500Expected 4/1/2027 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	162In Stock 2,500Expected 4/1/2027	Cut Tape ฿51.98 ฿37.98 ฿34.65 ฿30.49 View Reel ฿26.29 ฿28.62 ฿27.52 ฿27.19 ฿26.29 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