General Description
The HT23C020 is a read-only memory with high performance CMOS storage device whose 2048K of memory is arranged into 262144 words by 8 bits.

FEATUREs
• Operating voltage 2.7V~5.5V
• Low power consumption
    – Operation: 25mA max. (VCC=5V)
                         10mA max. (VCC=3V)
    – Standby: 30µA max. (VCC=5V)
                       10µA max. (VCC=3V)
• Access time:150ns max. (VCC=5V)
                       250ns max. (VCC=3V)
• 262144×8 bits of mask ROM
• Mask options: chip enable CE/CE/OE1/OE1, CE1/CE1/OE2/OE2/NC and output enable OE/OE/NC
• TTL compatible inputs and outputs
• Tristate outputs
• Fully static operation
• Package type: 32-pin DIP/SOP/PLCC