一、FEATURES 1. Fast access time : 45/55/70ns 2. Low power consumption:    Operating current : 40/30/20mA (TYP.)    Standby current : 2μA (TYP.) LL-version、1μA (TYP.) SL-version 3.Single 2.7V ~ 3.6V power supply 4.All inputs and outputs TTL compatible 5.Fully static operation 6.Tri-state output 7.Data retention voltage : 1.5V (MIN.) 8.Green package available 9.Package : 32-pin 450 mil SOP、32-pin 600 mil PDIP 32-pin 8mm x 20mm TSOP I、32-pin 8mm x 13.4mm sTSOP 32-pin 400 mil TSOP II、36-ball 6mm x 8mm TFBGA