If Military/Aerospace specified devices are required,

please contact the National Semiconductor Sales Office/

Distributors for availability and specifications.

Supply Voltage (V

−0.5V to +7.0V

DC Input Voltage (V

−0.5V to V

DC Input/Output Voltage (V

n

−0.5V to V

n

−0.5V to V

DC Input Diode Current (I

DC Output Diode Current (I

DC Output Source or

Sink Current (I

DC V

Per Output Pin (I

and Max Current

Storage Temperature Range

(T

−65˚C to +150˚C

Recommended Operating

Supply Voltage

V

CCA

4.5V to 5.5V

V

CCB

2.7V to 5.5V

Input Voltage (V

0V to V

CCA

Input/Output Voltage (V

n

0V to V

CCA

n

0V to V

CCB

Free Air Operating Temperature (T

−55˚C to +125˚C

Minimum Input Edge Rate (

∆V/∆t)

8 ns/V

V

V

Note 1: The “Absolute Maximum Ratings” are those values beyond which

the safety of the device cannot be guaranteed. The device should not be op-

erated at these limits. The parametric values defined in the Electrical Charac-

teristics tables are not guaranteed at the absolute maximum ratings. The

“Recommended Operating Conditions” table will define the conditions for ac-

tual device operation.

Note 2: The A port unused pins (inputs and I/O’s) must be held HIGH or

LOW. They may not float.

DC Electrical Characteristics

Symbol

Parameter

V

CCA

(V)

V

CCB

(V)

T

+125˚C

Units

Conditions

Guaranteed Limits

V

IHA

Minimum High Level

A

n

4.5

2.7

2.0

V

V

Input Voltage

OE

4.5

3.6

2.0

or

T/R

5.5

5.5

2.0

≥ V

V

IHB

B

n

4.5

2.7

2.0

4.5

3.6

2.0

4.5

5.5

3.85

V

ILA

Maximum Low Level

A

n

4.5

2.7

0.8

V

V

Input Voltage

OE

4.5

3.6

0.8

or

T/R

5.5

5.5

0.8

≥ V

V

ILB

B

n

4.5

2.7

0.8

4.5

3.6

0.8

4.5

5.5

1.65

V

OHA

Minimum High Level

4.5

2.7

4.4

V

I

Output Voltage

5.5

5.5

5.4

I

4.5

3.0

3.7

I

4.5

4.5

3.7

I

V

OHB

4.5

2.7

2.6

V

I

5.5

5.5

5.4

I

4.5

2.7

2.2

I

4.5

3.0

2.4

I

4.5

3.0

2.2

I

4.5

4.5

3.7

I

www.national.com

3