DESCRIPTION
The ISSI 4405x Series is a 4,194,304 x 4-bit high-performance CMOS Dynamic Random Access Memory. The Fast Page Mode allows 2,048 or 4096 random accesses within a single row with access cycle time as short as 20 ns per 4-bit word.

FEATURES
• Fast Page Mode Access Cycle
• TTL compatible inputs and outputs
• Refresh Interval:
    -- 2,048 cycles/32 ms
    -- 4,096 cycles/64 ms
• Refresh Mode: RAS-Only, CAS-before-RAS (CBR), and Hidden
• Single power supply: 5V±10% or 3.3V ± 10%
• Byte Write and Byte Read operation via two CAS
• Industrial temperature range -40°C to 85°C