74HC4020 Datasheet PDF - NXP

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74HC4020
NXP

Part Number 74HC4020
Description 14-stage binary ripple counter
Page 19 Pages


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74HC4020; 74HCT4020
14-stage binary ripple counter
Rev. 6 — 3 February 2016
Product data sheet
1. General description
The 74HT4020; 74HCT4020 is a 14-stage binary ripple counter with a clock input (CP), an
overriding asynchronous master reset input (MR) and 12 buffered parallel outputs (Q0,
and Q3 to Q13). The counter advances on the HIGH-to-LOW transition of CP. A HIGH on
MR clears all counter stages and forces all outputs LOW, independent of the state of CP.
Each counter stage is a static toggle flip-flop. This device features reduced input threshold
levels to allow interfacing to TTL logic levels. Inputs also include clamp diodes, this
enables the use of current limiting resistors to interface inputs to voltages in excess of
VCC.
2. Features and benefits
Wide supply voltage range from 2.0 V to 6.0 V
Input levels:
For 74HC4020: CMOS level
For 74HCT4020: TTL level
Multiple package options
Complies with JEDEC standard no. 7A
Specified from 40 C to +85 C and from 40 C to +125 C
3. Applications
Frequency dividing circuits
Time delay circuits
Control counters
4. Ordering information
Table 1. Ordering information
Type number Package
Temperature range
74HC4020D 40 C to +125 C
74HCT4020D
74HC4020DB 40 C to +125 C
74HCT4020DB
Name
SO16
SSOP16
Description
plastic small outline package; 16 leads;
body width 3.9 mm
Version
SOT109-1
plastic shrink small outline package; 16 leads; body SOT338-1
width 5.3 mm



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NXP Semiconductors
74HC4020; 74HCT4020
14-stage binary ripple counter
Table 1. Ordering information …continued
Type number Package
Temperature range Name
Description
Version
74HC4020PW 40 C to +125 C
74HCT4020PW
TSSOP16 plastic thin shrink small outline package; 16 leads; SOT403-1
body width 4.4 mm
74HC4020BQ 40 C to +125 C
74HCT4020BQ
DHVQFN16 plastic dual in-line compatible thermal enhanced SOT763-1
very thin quad flat package; no leads; 16 terminals;
body 2.5 3.5 0.85 mm
5. Functional diagram
&3  7
05  &'
67$*(&2817(5
           
4 4 4 4 4 4 4 4 4 4 4 4
DDO
Fig 1. Functional diagram
 &3
 05
Fig 2. Logic symbol
4 
4 
4 
4 
4 
4 
4 
4 
4 
4 
4 
4 
DDO
&75
 

 &7 





&7





 
DDO
Fig 3. IEC logic symbol
74HC_HCT4020
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 6 — 3 February 2016
© NXP Semiconductors N.V. 2016. All rights reserved.
2 of 19



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NXP Semiconductors
74HC4020; 74HCT4020
14-stage binary ripple counter
44
))
&3 7 
))
7 
4
5'
4
5'
05
4
Fig 4. Logic diagram
6. Pinning information
6.1 Pinning
4
))
7
4
5'
4
))
7
4
5'
4
))
7
4
5'
4 4
DDO

4 
4 
4 
4 
4 
4 
4 
*1' 
+&
+&7
 9&&
 4
 4
 4
 4
 05
 &3
 4
DDO
Fig 5. Pin configuration SO16, SSOP16 and
TSSOP16
+&
+&7
WHUPLQDO
LQGH[DUHD
4 
4 
4 
4 
4 
4 
9&& 
 4
 4
 4
 4
 05
 &3
DDO
7UDQVSDUHQWWRSYLHZ
(1) The substrate is attached to this pad using conductive
die attach material. It cannot be used as supply pin or
input. It is recommended that no connection is made at
all.
Fig 6. Pin configuration DHVQFN16
6.2 Pin description
Table 2. Pin description
Symbol
Pin
Q0, Q3 to Q13
9, 7, 5, 4, 6, 13, 12, 14, 15, 1, 2, 3
GND
8
CP 10
MR 11
VCC 16
Description
output
ground (0 V)
clock input (HIGH-to-LOW, edge-triggered)
master reset input (active HIGH)
positive supply voltage
74HC_HCT4020
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 6 — 3 February 2016
© NXP Semiconductors N.V. 2016. All rights reserved.
3 of 19



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NXP Semiconductors
74HC4020; 74HCT4020
14-stage binary ripple counter
7. Functional description
Table 3.
Input
CP
X
Function table
MR
L
L
H
Output
Q0, Q3 to Q13
no change
count
L
[1] H = HIGH voltage level; L = LOW voltage level; X = don’t care; = LOW-to-HIGH clock transition; = HIGH-to-LOW clock transition.
7.1 Timing diagram
&3LQSXW
05LQSXW
4
4
4
4
4
4
4
4
4
4
4
4
Fig 7. Timing diagram
              
DDO
74HC_HCT4020
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 6 — 3 February 2016
© NXP Semiconductors N.V. 2016. All rights reserved.
4 of 19



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