8-Stage Static Shift Register
TC4021BP/BF
TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic
TC4021BP, TC4021BF
TC4021B 8-Stage Static Shift ...
Description
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)
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
TC4021BP TC4021BF
Weight DIP16-P-300-2.54A SOP16-P-300-1.27A
: 1.00 g (typ.) : 0.18 g (typ.)
Truth Table
Inputs
OutputsΔ
CLOCKΔΔ P/S PI1 Pln SI Q1
Qn
L
*
*
L
L
Qn − 1
L
*
*
H
H
Qn − 1
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 to 8 Δ: Q1 to Q5 internal ΔΔ: Level change *: Don’t care
1
Start of commercial production
1978-04
2014-03-01
Logic Diagram
Parallel
TC4021BP/BF
Internal Flip Flop
2
2014-03-01
TC4021BP/BF
Absolute Maximum Ratings (Note)
Characteristics
Symbol
Rating
Unit
DC supply voltage Input voltage Output voltage DC input current Power dissipation Operating temperature rang...
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