MAATCC0005 vs MAATCC0005TR vs MAATCC0006

PartNumber	MAATCC0005	MAATCC0005TR	MAATCC0006
Description	DIGITAL ATTENUATOR31.5 DB, 6-BIT, TTL DRIVER, DC-2.0 GHZ	ATTENUATOR - DIGITALLY CONTROLLED	DIGITAL ATTENUATOR30.0 DB, 4-BIT, TTL DRIVER, DC-3.0 GHZ