TC4021BP/BF/BFN

2007-10-01

1

TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic

TC4021BP,TC4021BF,TC4021BFN

TC4021B 8-Stage Static Shift Register

(asynchronous parallel input or synchronous serial

input/serial output)

TC4021B is 8 stage parallel in/serial out shift register, which

can be used also for serial in/serial out operations. In the case of

parallel operation, the data of PARALLEL IN is input to each F/F

asynchronously with CLOCK and the output is obtained. In the

case of serial operations, each F/F is triggered by rising edge of

CLOCK. (asynchronous parallel or synchronous serial input)

Switching of PARALLEL operation and SERIAL operation is

achieved by P/ S CONTROL input. When P/ S CONTROL input

is “H”, PARALLEL operation is designated and when it is “L”,

SERIAL operation is designated.

Pin Assignment

Truth Table

Inputs

Outputs

Δ

CLOCK

ΔΔ

S

P/

PI1

Pln

SI

Q1

Qn

L

*

*

L

L

Qn

L

*

*

H

H

Qn

L

*

*

*

No Change

*

H

L

L

*

L

L

*

H

L

H

*

L

H

*

H

H

L

*

H

L

*

H

H

H

*

H

H

n: 2~8

Δ: Q1~Q5 internal

ΔΔ: Level change

*: Don’t care

Note: xxxFN (JEDEC SOP) is not available in

Japan.

TC4021BP

TC4021BF

TC4021BFN

Weight

DIP16-P-300-2.54A

: 1.00 g (typ.)

SOP16-P-300-1.27A

: 0.18 g (typ.)

SOL16-P-150-1.27

: 0.13 g (typ.)