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PDF ( 数据手册 , 数据表 ) 74HCT4020

零件编号 74HCT4020
描述 14-stage binary ripple counter
制造商 NXP Semiconductors
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74HCT4020 数据手册, 描述, 功能
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







74HCT4020 pdf, 数据表
NXP Semiconductors
74HC4020; 74HCT4020
14-stage binary ripple counter
Table 7. Dynamic characteristics …continued
GND (ground = 0 V); CL = 50 pF unless otherwise specified; for test circuit, see Figure 10
Symbol Parameter Conditions
25 C
40 C to +85 C 40 C to +125 C Unit
Min Typ Max Min Max Min Max
tW pulse width CP HIGH or LOW;
see Figure 8
VCC = 2.0 V; CL = 50 pF
VCC = 4.5 V; CL = 50 pF
VCC = 6.0 V; CL = 50 pF
MR HIGH; see Figure 8
80 14 - 100
-
120
- ns
16 4 -
20
-
24
- ns
14 3 -
17
-
20
- ns
VCC = 2.0 V; CL = 50 pF
80 17 - 100
-
120
- ns
VCC = 4.5 V; CL = 50 pF
16 6 -
20
-
24
- ns
VCC = 6.0 V; CL = 50 pF
14 5 -
17
-
20
- ns
trec recovery time MR to CP; see Figure 8
VCC = 2.0 V; CL = 50 pF
50 6 -
65
-
75
- ns
VCC = 4.5 V; CL = 50 pF
10 2 -
13
-
15
- ns
VCC = 6.0 V; CL = 50 pF
92 -
11
-
13
- ns
fmax maximum see Figure 8
frequency
VCC = 2.0 V; CL = 50 pF
6.0 30 -
4.8
-
4.0
- MHz
VCC = 4.5 V; CL = 50 pF
30 92 -
24
-
20
- MHz
VCC = 5.0 V; CL = 15 pF
- 101 -
-
-
-
- MHz
VCC = 6.0 V; CL = 50 pF
35 109 -
28
-
24
- MHz
CPD power
dissipation
capacitance
[3] - 19 -
-
-
-
- pF
74HCT4020
tpd propagation CP to Q0; see Figure 8 [1]
delay
VCC = 4.5 V; CL = 50 pF
- 18 36
-
45
-
54 ns
VCC = 5.0 V; CL = 15 pF
- 15 -
-
-
-
- ns
Qn to Qn+1; see Figure 9
VCC = 4.5 V; CL = 50 pF
- 8 15
-
19
-
22 ns
VCC = 5.0 V; CL = 15 pF
-6-
-
-
-
- ns
tPHL HIGH to LOW MR to Qn; see Figure 8
propagation
delay
VCC = 4.5 V; CL = 50 pF
VCC = 5.0 V; CL = 15 pF
- 22 45
-
56
-
68 ns
- 19 -
-
-
-
- ns
tt
transition
Qn; see Figure 8
[2]
time
VCC = 4.5 V; CL = 50 pF
- 7 15
-
19
-
22 ns
tW pulse width CP HIGH or LOW;
see Figure 8
VCC = 4.5 V; CL = 50 pF
MR HIGH; see Figure 8
20 7 -
25
-
30
- ns
VCC = 4.5 V; CL = 50 pF
trec recovery time MR to CP; see Figure 8
VCC = 4.5 V; CL = 50 pF
20 8 -
25
-
30
- ns
10 2 -
13
-
15
- ns
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.
8 of 19







74HCT4020 equivalent, schematic
NXP Semiconductors
74HC4020; 74HCT4020
14-stage binary ripple counter
14. Abbreviations
Table 10. Abbreviations
Acronym
Abbreviation
CMOS
Complementary Metal Oxide Semiconductor
DUT
Device Under Test
15. Revision history
Table 11. Revision history
Document ID
Release date
Data sheet status
Change notice Supersedes
74HC_HCT4020 v.6
Modifications:
20160203
Product data sheet
-
74HC_HCT4020 v.5
Type numbers 74HC4020N and 74HCT4020N (SOT38-4) removed.
74HC_HCT4020 v.5
Modifications:
20120806
Product data sheet
-
Measurement points added to figure 8 (errata).
74HC_HCT4020 v.4
74HC_HCT4020 v.4
Modifications:
20111213
Product data sheet
Legal pages updated.
-
74HC_HCT4020 v.3
74HC_HCT4020 v.3
20100120
Product data sheet
-
74HC_HCT4020_CNV v.2
74HC_HCT4020_CNV v.2 19970901
Product specification -
-
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.
16 of 19










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