TC4021BP/BF
TOSHIBA CMOS Digital Integrated Circuit
Silicon Monolithic
TC4021BP,TC4021BF
TC4021B 8-Stage Static Shift Register
(asynchronous parallel input or synchronous serial
input/serial output)
TC4021BP
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.
TC4021BF
Pin Assignment
Weight
DIP16-P-300-2.54A
SOP16-P-300-1.27A
: 1.00 g (typ.)
: 0.18 g (typ.)
Truth Table
Inputs
OutputsΔ
P/ S
PI1
Pln
SI
Q1
Qn
L
*
*
L
L
Qn − 1
L
*
*
H
H
Qn − 1
L
*
*
*
*
H
L
L
*
L
L
*
H
L
H
*
L
H
*
H
H
L
*
H
L
*
H
H
H
*
H
H
CLOCKΔΔ
No Change
n: 2~8
Δ: Q1~Q5 internal
ΔΔ: Level change
*: Don’t care
1
2012-02-29
