DM74LS166M View Datasheet(PDF) - Fairchild Semiconductor

Part Name

Description

Manufacturer

DM74LS166M

8-Bit Parallel-In/Serial-Out Shift Register

Fairchild Semiconductor 

Absolute Maximum Ratings(Note 1)

Supply Voltage

7V

Input Voltage

7V

Operating Free Air Temperature Range 0°C to +70°C

Storage Temperature Range

−65°C to +150°C

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

Symbol

Parameter

VCC

Supply Voltage

VIH

HIGH Level Input Voltage

VIL

LOW Level Input Voltage

IOH

HIGH Level Output Current

IOL

LOW Level Output Current

fCLK

Clock Frequency (Note 2)

Clock Frequency (Note 3)

tW

Pulse Width (Note 4)

Clock

Clear

tSU

Setup Time (Note 4)

Mode

Data

tH

Hold Time (Note 4)

TA

Free Air Operating Temperature

Note 2: CL = 15 pF, RL = 2 kΩ, TA = 25°C and VCC = 5V.

Note 3: CL = 50 pF, RL = 2 kΩ, TA = 25°C and VCC = 5V.

Note 4: TA = 25°C and VCC = 5V.

Min

4.75

2

0

0

20

20

30

20

0

0

Nom

5

Max

Units

5.25

V

V

0.8

V

−0.4

mA

8

mA

25

MHz

20

MHz

ns

ns

ns

70

°C

Electrical Characteristics

over recommended operating free air temperature range (unless otherwise noted)

Symbol

Parameter

Conditions

Typ

Min

Max

(Note 5)

Units

VI

Input Clamp Voltage

VOH

HIGH Level

Output Voltage

VOL

LOW Level

Output Voltage

II

Input Current @ Max Input Voltage

IIH

HIGH Level Input Current

IIL

LOW Level Input Current

IOS

Short Circuit Output Current

ICC

Supply Current

Note 5: All typicals are at VCC = 5V, TA = 25°C.

VCC = Min, II = −18 mA

VCC = Min, IOH = Max

VIL = Max, VIH = Min

VCC = Min, IOL = Max

VIL = Max, VIH = Min

IOL = 4 mA, VCC = Min

VCC = Max, VI = 7V

VCC = Max, VI = 2.7V

VCC = Max, VI = 0.4V

VCC = Max (Note 6)

VCC = Max (Note 7)

−1.5

V

2.7

3.4

V

0.35

0.5

V

0.25

0.4

0.1

mA

20

µA

−0.4

mA

−20

−100

mA

22

38

mA

Note 6: Not more than one output should be shorted at a time, and the duration should not exceed one second.

Note 7: With all outputs OPEN, 4.5V applied to the serial input, all other inputs except the CLOCK grounded, ICC is measured after a momentary ground,

then 4.5V is applied to the CLOCK.

3

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