MC74HC4020A Datasheet, PDF (1/8 Pages) ON Semiconductor – 14-Stage Binary Ripple Counter

MC74HC4020A
14-Stage Binary Ripple
Counter
High–Performance Silicon–Gate CMOS
The MC74C4020A is identical in pinout to the standard CMOS
MC14020B. The device inputs are compatible with standard CMOS
outputs; with pullup resistors, they are compatible with LSTTL
outputs.
This device consists of 14 master–slave flip–flops with 12 stages
brought out to pins. The output of each flip–flop feeds the next and the
frequency at each output is half of that of the preceding one. Reset is
asynchronous and active–high.
State changes of the Q outputs do not occur simultaneously because
of internal ripple delays. Therefore, decoded output signals are subject
to decoding spikes and may have to be gated with the Clock of the
HC4020A for some designs.
• Output Drive Capability: 10 LSTTL Loads
• Outputs Directly Interface to CMOS, NMOS, and TTL
• Operating Voltage Range: 2 to 6 V
• Low Input Current: 1 µA
• High Noise Immunity Characteristic of CMOS Devices
• In Compliance With JEDEC Standard No. 7A Requirements
• Chip Complexity: 398 FETs or 99.5 Equivalent Gates
Clock ¹⁰
Reset ¹¹
LOGIC DIAGRAM
9 _Q1
7 _Q4
5 _Q5
4 _Q6
6 _Q7
13 _Q8
12 _Q9
14 _Q10
15 _Q11
1 _Q12
2 _Q13
3 _Q14
Pin 16 = VCC
Pin 8 = GND
VCC Q11 Q10 Q8 Q9 Reset Clock Q1
16 15 14 13 12 11 10 9
Pinout: 16–Lead Plastic Package
(Top View)
12345678
Q12 Q13 Q14 Q6 Q5 Q7 Q4 GND
http://onsemi.com
16
1
16
1
PDIP–16
N SUFFIX
CASE 648
SO–16
D SUFFIX
CASE 751B
MARKING
DIAGRAMS
16
MC74HC4020AN
AWLYYWW
1
16
HC4020A
AWLYWW
1
16
16
1
TSSOP–16
DT SUFFIX
CASE 948F
HC40
20A
ALYW
1
A = Assembly Location
WL = Wafer Lot
YY = Year
WW = Work Week
Clock
X
FUNCTION TABLE
Reset
L
L
H
Output State
No Charge
Advance to Next State
All Outputs Are Low
ORDERING INFORMATION
Device
Package Shipping
MC74HC4020AN
PDIP–16 2000 / Box
MC74HC4020AD
SOIC–16 48 / Rail
MC74HC4020ADR2
SOIC–16 2500 / Reel
MC74HC4020ADT
TSSOP–16 96 / Rail
MC74HC4020ADTR2 TSSOP–16 2500 / Reel
© Semiconductor Components Industries, LLC, 2000
1
March, 2000 – Rev. 2
Publication Order Number:
MC74HC4020A/D