CXK58257CTM

The CXK58257CTM is a kind of 262,144 bits high speed CMOS static RAM organized as 32768 words by 8 bits. It is a suitable RAM for portable equipment with battery back up.

There are some features as follows: (1)single +5 V supply: 5 V±10%; (2)fast access time; (3)low standby current: 5A (max); (4)low data retention current: 3A (max); (5)direct TTL compatible: all inputs and outputs; (6)data retention voltage: 2.0 V (min); (7)broad package line-up.

What comes next is about the absolute maximum ratings (Ta=25, GND=0 V): (1)supply voltage, VCC: -0.5 to 7.0 V; (2)input voltage, VIN: -0.5 to VCC+0.5 V; (3)input and output voltage, VI/O: -0.5 to VCC+0.5 V; (4)allowable power dissipation, PD: 0.7 W; (5)operating temperature, Topr: 0 to +70; (6)storage temperature, Tstg: -55 to +150; (7)soldering temperature, 10 sec, Tsolder: 235. Then is about the DC recommended operating conditions (Ta=0 to +70, GND=0 V): (1)supply voltage, VCC: 4.5 V min, 5.0 V typ and 5.5 V max; (2)input high voltage, VIH: 2.2 V min and VCC+0.3 V; (3)input low voltage, VIL: -0.3 V min and 0.8 V max.