HD74ACT164 查看數據表（PDF） - Hitachi -> Renesas Electronics

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HD74ACT164

Serial-In, Parallel-Out Shift Register

Hitachi -> Renesas Electronics 

HD74AC164/HD74ACT164

Mode Select Table

Inputs

Outputs

Operating Mode

MR

A

B

Q0

Q1 to Q7

Reset (Clear)

L

X

X

L

L to L

Shift

H:

L:

X:

qn :

H

L

L

L

q0 to q6

H

L

H

L

q0 to q6

H

H

L

L

q0 to q6

H

H

H

H

q0 to q6

High Voltage Level

Low Voltage Level

Immaterial

Lower case letters indicate the state of the referenced input or output one setup time prior to the

Low-to-High clock transition.

Logic Diagram

A

B

DQ

DQ

DQ

DQ

DQ

DQ

DQ

DQ

CD

CD

CD

CD

CD

CD

CD

CD

CP

MR

Q0

Q1

Q2

Q3

Q4

Q5

Q6

Q7

Please note that this diagram is provided only for the understanding of logic operations and should not be

used to estimate propagation delays.

DC Characteristics (unless otherwise specified)

Item

Symbol Max

Unit

Maximum quiescent supply current ICC

80

µA

Maximum quiescent supply current ICC

8.0

µA

Maximum additional ICC/input

(HD74ACT164)

I CCT

1.5

mA

Condition

VIN = VCC or ground, VCC = 5.5 V,

Ta = Worst case

VIN = VCC or ground, VCC = 5.5 V,

Ta = 25°C

VIN = VCC – 2.1 V, VCC = 5.5 V,

Ta = Worst case

3

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