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6

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

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

operated at these limits. The parametric values defined in the Electrical

Characteristics tables are not guaranteed at the absolute maximum ratings.

The “Recommended Operating Conditions” table will define the conditions

for actual device operation.

Recommended Operating Conditions

Note 2: The symbol (

↑) indicates that the rising edge of the clock is used as a reference.

Supply Voltage

7V

Input Voltage

7V

Operating Free Air Temperature Range

0

°C to +70°C

Storage Temperature Range

−65°C to +150°C

Typical

θJA

N Package

78.1

°C/W

M Package

106.8

°C/W

Symbol

Parameter

Min

Nom

Max

Units

Supply Voltage

4.5

5

5.5

V

HIGH Level Input Voltage

2

V

LOW Level Input Voltage

0.8

V

HIGH Level Output Current

−0.4

mA

LOW Level Output Current

8

mA

Clock Frequency

0

40

MHz

Setup Time

Data; A, B, C, D

15

↑ (Note 2)

ns

En P, En T

DM74ALS161B

15

↑ (Note 2)

ns

DM74ALS162B

15

↑ (Note 2)

ns

DM74ALS163B

Load

15

↑ (Note 2)

ns

Clear (Only for

DM74ALS162B and

DM74ALS163B)

LOW

15

↑ (Note 2)

ns

HIGH

12

↑ (Note 2)

ns

Setup 1 (Only for 161B)

Clear Inactive

10

4

ns

Hold Time

Data; A, B, C, D

0

↑ (Note 2)

−3ns

En P, En T

0

↑ (Note 2)

−3ns

Load

0

↑ (Note 2)

−4ns

Clear (Only for DM74ALS162B and

DM74ALS163B

0

↑ (Note 2)

−7ns

Hold 0 (Only for 161B)

Clear

0

−4ns

Width of Clock

CLK HIGH or LOW

12.5

ns

or Clear Pulse

DM74ALS161B CLR LOW

15

ns

Width of Load Pulse

15

ns

Operating Free Air Temperature

0

70

°C