HD74LS166A 查看數據表（PDF） - Renesas Electronics

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HD74LS166A

8-bit Shift Register

Renesas Electronics 

HD74LS166A

Recommended Operating Conditions

Item

Supply voltage

Output current

Operating temperature

Clock frequency

Clock and clear pulse width

Mode control setup time

Data setup time

Hold time

Symbol

VCC

IOH

IOL

Topr

ƒclock

tw

tsu

tsu

th

Min

4.75

—

—

–20

0

20

30

20

0

Typ

Max

Unit

5.00

5.25

V

—

–400

µA

—

8

mA

25

75

°C

—

25

MHz

—

—

ns

—

—

ns

—

—

ns

—

—

ns

Electrical Characteristics

(Ta = –20 to +75 °C)

Item

Symbol

min.

typ.* max.

Unit

Condition

Input voltage

Output voltage

Input current

Short-circuit output

current

VIH

2.0

—

—

V

VIL

—

—

0.8

V

VOH

2.7

—

—

V

VCC = 4.75 V, VIH = 2 V, VIL = 0.8 V,

IOH = –400 µA

VOL

—

—

0.4

V

IOL = 4 mA VCC = 4.75 V, VIH = 2 V,

—

—

0.5

IOL = 8 mA VIL = 0.8 V

IIH

—

—

20

µA VCC = 5.25 V, VI = 2.7 V

IIL

—

—

–0.4

mA VCC = 5.25 V, VI = 0.4 V

II

—

—

0.1

mA VCC = 5.25 V, VI = 7 V

IOS

–20

—

–100

mA VCC = 5.25 V

Supply current**

ICC

—

20

32

mA VCC = 5.25 V

Input clamp voltage

VIK

—

—

–1.5

V

VCC = 4.75 V, IIN = –18 mA

Notes: * VCC = 5 V, Ta = 25°C

** With the outputs open, 4.5 V applied to the serial input and all other inputs except the clock grounded, ICC is

measured after a momentary ground, then 4.5 V, is applied to clock.

Switching Characteristics

(VCC = 5 V, Ta = 25°C)

Item

Symbol Inputs min.

typ.

max.

Unit

Condition

Maximum clock frequency

ƒmax

25

35

—

MHz

Propagation delay time

tPHL

tPHL

Clear

—

7

Clock

19

14

30

25

ns

ns

CL = 15 pF, RL = 2 kΩ

tPLH

5

11

20

ns

Rev.4.00, May 10, 2006, page 4 of 7

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