....................................................................ZOUT 50 Ω ± 20%....................................................................IOUT (DC) ±2 mA............................................................................Pull-down resistor 150 kΩ............................................................................Recommended operating voltage -0.3 V to 3.6 V............................................................................Overvoltage protection ±10 V............................................................................Maximum toggle frequency 6.6 MHz............................................................................+5 V maximum power 10 mA............................................................................+5 V voltage tolerance 4.2 V to 5 VCompliance and CertificationsSafetyThis product is designed to meet the requirements of the following electrical equipment safetystandards for measurement, control, and laboratory use:• IEC 61010-1, EN 61010-1• UL 61010-1, CSA 61010-1Note For UL and other safety certifications, refer to the product label or the OnlineProduct Certification section.Electromagnetic CompatibilityThis product meets the requirements of the following EMC standards for electrical equipmentfor measurement, control, and laboratory use:• EN 61326-1 (IEC 61326-1): Class A emissions; Basic immunity• EN 55011 (CISPR 11): Group 1, Class A emissions• AS/NZS CISPR 11: Group 1, Class A emissions• FCC 47 CFR Part 15B: Class A emissions• ICES-001: Class A emissionsNote In the United States (per FCC 47 CFR), Class A equipment is intended foruse in commercial, light-industrial, and heavy-industrial locations. In Europe,Canada, Australia, and New Zealand (per CISPR 11), Class A equipment is intendedfor use only in heavy-industrial locations.Note Group 1 equipment (per CISPR 11) is any industrial, scientific, or medicalequipment that does not intentionally generate radio frequency energy for thetreatment of material or inspection/analysis purposes.Note For EMC declarations, certifications, and additional information, refer to theOnline Product Certification section.36 | NI 5791R User Manual and Specifications | ni.com