You could also use AS1107 as a cost down.
It is fully compatible to MAX7221:
http://www.digikey.com/product-search/en/integrated-circuits-ics/pmic-display-drivers/2556426?k=AS1107
You could also use AS1107 as a cost down.
It is fully compatible to MAX7221:
http://www.digikey.com/product-search/en/integrated-circuits-ics/pmic-display-drivers/2556426?k=AS1107