Pin Description

Pin Name

I/O

Description

CS

I

Chip select input

SK

I

Serial clock input

DI

I

Serial data input

DO

O

Serial data output

VSS

¾

Negative power supply, ground

ORG

I

Internal Organization

When ORG is connected to VDD or ORG is floated, the (

´16) memory organization is se-

lected. When ORG is tied to VSS, the (

´8) memory organization is selected. There is an in-

ternal pull-up resistor on the ORG pin.

NC

¾

No connection

VCC

¾

Positive power supply

Absolute Maximum Ratings

Operation Temperature (Commercial)..........................................................................................................0

°Cto70°C

-0.3V to 6.0V

Note: These are stress ratings only. Stresses exceeding the range specified under

²Absolute Maximum Ratings² 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 reliabil-

ity.

D.C. Characteristics

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

Conditions

Operating Voltage

¾¾

2.2

¾

5.5

V

Operating Current (TTL)

5V

DO unload, SK=1MHz

¾¾

5mA

Operating Current (CMOS)

5V

DO unload, SK=1MHz

¾¾

5mA

2~5.5V

DO unload, SK=250kHz

¾¾

5mA

Standby Current (CMOS)

5V

CS=SK=DI=0V

¾¾

10

mA

Input Leakage Current

5V

0

¾

1

mA

Output Leakage Current

5V

0

¾

1

mA

Input Low Voltage

5V

¾

0

¾

0.8

V

2~5.5V

¾

0

¾

V

Input High Voltage

5V

¾

2

¾

V

2~5.5V

¾

¾

V

Output Low Voltage

5V

¾¾

0.4

V

2~5.5V

mA

¾¾

0.2

V

Output High Voltage

5V

-400mA

2.4

¾¾

V

2~5.5V

¾¾

V

Input Capacitance

¾

¾¾

5pF

Output Capacitance

¾

¾¾

5pF

HT93LC66

Rev. 1.40

2

October 25, 2007