Overview
The LC3564CM and LC3564CT-55U/70U are 8192-word × 8-bit asynchronous silicon gate CMOS SRAMs. These are full CMOS type SRAMs that adopt a six-transistor memory cell and feature fast access times, low operating power dissipation, and an ultralow standby current.
   
Features
• Supply voltage range:  2.7 to 5.5 V
    — In 5-V operation mode: 5.0 V ±10%
    — In 3-V operation mode: 3.0 V ±10%
• Address access time (tAA)
    — In 5-V operation mode:
        LC3564CM, and CT-55U: 55 ns (max)
        LC3564CM, and CT-70U: 70 ns (max)
    — In 3-V operation mode:
        LC3564CM, and CT-70U: 200 ns (max)   
• Ultralow standby current
    — In 5-V operation mode: 1.0 µA (Ta ≤ 70°C),
    3.0 µA (Ta ≤ 85°C)
    — In 3-V operation mode: 0.8 µA (Ta ≤ 70°C),
    2.5 µA (Ta ≤ 85°C)
• Operating temperature range
    — In 5-V operation mode: –40 to 85°C
    — In 3-V operation mode: –40 to 85°C
• Data retention supply voltage: 2.0 to 5.5 V
• All input and output levels:
    — In 5-V operation mode: TTL compatible levels
    — In 3-V operation mode: VCC –0.2 V/0.2 V
• Three control inputs: OE, CE1, and CE2
• Shared input and output pins, three-state outputs
• No clock required
• Packages
    28-pin SOP (450 mil) plastic package: LC3564CM
    28-pin TSOP (8 × 13.4 mm) plastic package: LC3564CT