HCC40104B View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

HCC40104B

4-BIT BIDIRECTIONAL UNIVERSAL SHIFT REGISTER

STMicroelectronics 

TRUTH TABLES

40104B

Mode

Clockv Select O utput

S 0 S 1 Enable

–/– 0 0

1

–/– 1 0

1

Action

Reset

Shift Right

(Q0 toward Q3)

–/– 0 1

1

Shift Left

(Q3 toward Q0)

–/– 1 1

1

Parallel Load

Operations occur as

X

XX

0

shown above, but

outputs assume high

impedance

Output Low (sink) Current Characteristics.

HCC/HCF40104B/40194B

40194B

Mode

Clock Select Reset

S0 S1

Action

X 0 0 1 No Change

–/– 1 0

1

Shift Right

(Q0 toward Q3)

–/– 0 1

1

Shift Left

(Q3 toward Q0)

–/– 1 1

1

Parallel Load

X X X 0 Reset

1=High level

0=Low level

X= Don’t care

∆ = Level change

Output High (source) Current Characteristics.

Typical Propagation Delay Time vs. Load Capacit-

ance.

Typical Transition Time vs. Load Capacitance.

7/12

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