8-Stage Static Shift Register - Toshiba
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 range Storage temperature range
VDD VIN VOUT IIN PD Topr Tstg
VSS − 0.
5 to VSS + 20
V
VSS − 0.
5 to VDD + 0.
5
V
VSS − 0.
5 to VDD + 0.
5
V
±10
mA
300 (DIP)/180 (SOP)
mW
−40 to 85
°C
−65 to 150
°C
Note:
Exceeding any of the absolute maximum ratings, even briefly, lead to deterioration in IC performance or even destruction.
Using continuously under heavy loads (e.
g.
the application of high temperature/current/voltage and the significant change in temperature, etc.
) may cause this product...
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