ST HCF4021B User Manual
HCF4021B
ASYNCHRONOUS PARALLEL IN OR SYNCHRONOUS
SERIAL IN/SERIAL OUT 8 - STAGE STATIC SHIFT REGISTER
■ MEDIUM SPEED OPERATION : 12 MHz
(Typ.) CLOCK RATE AT V
■ FULLY STATIC OPERATION
■ 8 MASTER-SLAVE FLIP-FLOPS PLUS
- VSS = 10V
DD
OUTPUT BUFFERING AND CONTROL
GATING
■ QUIESCENT CURRENT SPECIFIED UP TO
20V
■ 5V, 10V AND 15V PARAMETRIC RAT INGS
■ INPUT LEAKAGE CURRENT
I
= 100nA (MAX) AT VDD = 18V TA = 25°C
I
■ 100% TESTED FOR QUIESCENT CURRENT
■ MEETS ALL REQUIREMENTS OF JEDEC
JESD13B " STANDARD SPECIF ICATIONS
FOR DESCRIPTI ON OF B SERI ES CMOS
DEVICES"
DESCRIPTION
The HCF4021B is a m onolithic integrated circuit
fabricated in Metal Oxide Semiconductor
technology available in DIP and SOP packages.
This device is an 8-stage paral lel or serial input/
serial output register having common CLOCK and
PARALLEL/SERIAL CONTROL inputs, a single
SERIAL data input, and individual parallel "JAM"
inputs to each register stage. Each regist er stage
is a D-type, master-slave flip-flop in addition to an
output from stage 8, "Q" outputs are also available
from stages 6 and 7. Serial entry is synchronous
with the clock but parallel entry is asynchronous.
DIP SOP
ORDER CODES
PACKAGE TUBE T & R
DIP HCF4021BEY
SOP HCF4021BM1 HCF4021M013TR
In this device, entry is controlled by the
PARALLEL/SERIAL CONTROL input. When the
PARALLEL/SERIA L CONTROL input is low, data
is serially shifted into the 8-stage register
synchronously with the positive transition of he
clock line. When the PARALLEL/SERIAL
CONTROL input is high, data is jammed in to the
8-stage register via the parallel input lines and
synchronous with the positive transition of the
clock line, the CLOCK input of the internal stage is
"forced" when asynchronous parallel entry is
made. Register expansion using multiple package
is permitted.
PIN CONNECTION
1/11September 2001
HCF4021B
IINPUT EQUIVALENT CIRCUIT PIN DESCRIPTION
PIN No SYMBOL NAME AND FUNCTION
7, 6, 5, 4, 13,
14, 15, 1
11 SERIAL IN Serial Input
9
10 CLOCK Clock Input
2, 3, 12 Q6, Q7, Q8 Buffered Outputs
8
16
TRUTH TABLE
PI1 to PI8 Parallel Input
PARALLEL/
SERIAL
CONTROL
V
SS
V
DD
Parallel/Serial Input Control
Negative Supply Voltage
Positive Supply Voltage
CLOCK SERIAL INPUT
PARALLEL/
SERIAL
CONTROL
PI - 1 PI - n
Q
1
(INTERNAL)
Q
XX10000
XX10101
XX11010
XX11111
Q
n
Q
n
Q
X : Don’t Care
00XX0
10XX1
XXXX
Q
1
LOGIC DIAGRAM
n
- 1
- 1
n
2/11
HCF4021B
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
V
V
P
T
T
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is
not implied.
All voltage values are referred to V
RECOMMENDED OPERATING CONDITIONS
Symbol Parameter Value Unit
V
V
T
Supply Voltage
DD
DC Input Voltage -0.5 to VDD + 0.5
I
I
DC Input Current
I
Power Dissipation per Package 200 mW
D
-0.5 to +22 V
± 10 mA
Power Dissipation per Output Transistor 100 mW
Operating Temperature
op
Storage Temperature
stg
pin voltage.
SS
Supply Voltage
DD
Input Voltage 0 to V
I
Operating Temperature
op
-55 to +125 °C
-65 to +150 °C
3 to 20 V
DD
-55 to 125 °C
V
V
3/11
HCF4021B
DC SPECIFICATIONS
Test Condition Value
T
Symbol Parameter
I
Quiescent Current 0/5 5 0.04 5 150 150
L
V
(V)
V
I
(V)
|I
|
O
O
(µA)
V
DD
(V)
= 25°C
A
Min. Typ. Max. Min. Max. Min. Max.
0/10 10 0.04 10 300 300
0/15 15 0.04 20 600 600
0/20 20 0.08 100 3000 3000
V
High Level Output
OH
Voltage
0/5 <1 5 4.95 4.95 4.95
0/15 <1 15 14.95 14.95 14.95
Low Level Output
V
OL
Voltage
5/0 <1 5 0.05 0.05 0.05
15/0 <1 15 0.05 0.05 0.05
High Level Input
V
IH
Voltage
0.5/4.5 <1 5 3.5 3.5 3.5
1.5/13.5 <1 15 11 11 11
V
IL
Low Level Input
Voltage
4.5/0.5 <1 5 1.5 1.5 1.5
13.5/1.5 <1 15 4 4 4
I
OH
Output Drive
Current
0/5 2.5 <1 5 -1.36 -3.2 -1.1 -1.1
0/5 4.6 <1 5 -0.44 -1 -0.36 -0.36
0/10 9.5 <1 10 -1.1 -2.6 -0.9 -0.9
0/15 13.5 <1 15 -3.0 -6.8 -2.4 -2.4
I
OL
Output Sink
Current
0/5 0.4 <1 5 0.44 1 0.36 0.36
0/15 1.5 <1 15 3.0 6.8 2.4 2.4
Input Leakage
I
I
Current
C
Input Capacitance
I
The Noi se Margin fo r both "1" and "0" level is: 1V min. with VDD=5V, 2V min. with VDD=10V, 2.5V min. with VDD=15V
0/18 Any Input 18
Any Input 5 7.5 pF
±10
-5
-40 to 85°C -55 to 125°C
±0.1 ±1 ±1 µA
Unit
µA
V0/10 <1 10 9.95 9.95 9.95
V10/0 <1 10 0.05 0.05 0.05
V1/9 <1 10 7 7 7
V9/1 <1 10 3 3 3
mA
mA0/10 0.5 <1 10 1.1 2.6 0.9 0.9
4/11
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