Packed in a Tape & Reel (TR). There is a package called 28-SSOP (0.209, 5.30mm Width). A Single Phase meter can be used with it as well. Surface Mount is available for purchase. The operational temperature at -40°C~85°C is higher. Power is supplied by 2.8V~3.6V power supply, which allows it to operate. If you're looking for similar parts, search IDT90E21.
90E21PYGI8 Features
Single Phase meter.
90E21PYGI8 Applications
There are a lot of Renesas Electronics America Inc. 90E21PYGI8 Energy Metering ICs applications.
Telecom Infrastructure
Industrial Lighting Power Monitoring
Power monitoring/power budgeting
Central office equipment
Server Backplane Systems
Base Station Power Distribution Systems
Subsystem Power Measurement
Intelligent Power Distribution Units
General Purpose Energy Measurement
Real-Time Measurement of Input Power for AC/DC Supplies