Absolute Maximum Rating

Operation Temperature Commercial ..................................................................................0

Storage Temperature........................................................................................................ –65

Applied VCC Voltage with Respect to VSS ....................................................................... –0.6V to 7.0V

Applied Voltage on Input Pin with Respect to VSS.......................................................... –0.6V to 7.0V

Applied Voltage on A9 Pin with Respect to VSS ............................................................ –0.6V to 13.5V

Applied VPP Voltage with Respect to VSS ...................................................................... –0.6V to 13.5V

Applied READ Voltage (Functionality is guaranteed between these limits) ............... +4.5V to +5.5V

Note: These are stress ratings only. Stresses exceeding the range specified under “Absolute Maxi-

mum Ratings” may cause substantial damage to the device. Functional operation of this device

at other conditions beyond those listed in the specification is not implied and prolonged

exposure to extreme conditions may affect device reliability.

D.C. Characteristics

Read operation

Symbol

Parameter

Test Conditions

Min. Typ.

Max.

Unit

Conditions

Output High Level

5V

2.4

—

—

V

Output Low Level

5V

—

—

0.45

V

Input High Level

5V

—

2.0

—

V

Input Low Level

5V

—

–0.3

—

0.8

V

Input Leakage Current

5V

–5

—

5

Output Leakage Current

5V

–10

—

10

VCC Active Current

5V

——

30

mA

Standby Current (CMOS)

5V

—

1.0

10

Standby Current (TTL)

5V

—

—

1.0

mA

VPP Read/Standby Current

5V

——

100

HT27C020

3

10th May ’99