74HC20; 74HCT20
Dual 4-input NAND gate
Rev. 3 — 3 September 2012
Product data sheet
1. General description
The 74HC20; 74HCT20 is a dual 4-input NAND gate. Inputs include clamp diodes. This
enables the use of current limiting resistors to interface inputs to voltages in excess of
V
CC
.
2. Features and benefits
Complies with JEDEC standard JESD7A
Low-power dissipation
Input levels:
For 74HC20: CMOS level
For 74HCT20: TTL level
ESD protection:
HBM JESD22-A114F exceeds 2000 V
MM JESD22-A115-A exceeds 200 V
Multiple package options
Specified from
40 C
to +80
C
and from
40 C
to +125
C.
3. Ordering information
Table 1.
Ordering information
Package
Temperature range
74HC20N
74HCT20N
74HC20D
74HCT20D
74HC20DB
74HCT20DB
74HC20PW
74HCT20PW
40 C
to +125
C
TSSOP14
40 C
to +125
C
SSOP14
40 C
to +125
C
SO14
plastic small outline package; 14 leads; body width
3.9 mm
plastic shrink small outline package; 14 leads; body
width 5.3 mm
plastic thin shrink small outline package; 14 leads;
body width 4.4 mm
SOT108-1
SOT337-1
SOT402-1
40 C
to +125
C
Name
DIP14
Description
plastic dual in-line package; 14 leads (300 mil)
Version
SOT27-1
Type number
NXP Semiconductors
74HC20; 74HCT20
Dual 4-input NAND gate
4. Functional diagram
$
%
&
'
$
%
&
'
DDD
<
$
%
&
'
$
%
&
'
DDD
<
<
<
Fig 1.
Functional diagram
Fig 2.
Logic symbol
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%
DDD
<
&
'
DDD
Fig 3.
IEC Logic symbol
Fig 4.
Logic diagram
5. Pinning information
5.1 Pinning
+&
+&7
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%
QF
&
'
<
*1'
DDD
9
&&
'
&
QF
%
$
<
$
%
QF
&
'
<
*1'
+&
+&7
9
&&
'
&
QF
%
DDD
$
<
Fig 5.
Pin configuration SOT27-1 and SOT108-1
Fig 6.
Pin configuration SOT337-1 and SOT402-1
74HC_HCT20
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2012. All rights reserved.
Product data sheet
Rev. 3 — 3 September 2012
2 of 16
NXP Semiconductors
74HC20; 74HCT20
Dual 4-input NAND gate
5.2 Pin description
Table 2.
Symbol
1A, 1B, 1C, 1D
n.c.
1Y
GND
2Y
2A, 2B, 2C, 2D
V
CC
Pin description
Pin
1, 2, 4, 5
3, 11
6
7
8
9, 10, 12, 13
14
Description
data input
not connected
data output
ground (0 V)
data output
data input
supply voltage
6. Functional description
Table 3.
Input
nA
L
X
X
X
H
[1]
Function table
[1]
Output
nB
X
L
X
X
H
nC
X
X
L
X
H
nD
X
X
X
L
H
nY
H
H
H
H
L
H = HIGH voltage level; L = LOW voltage level; X = don’t care.
7. Limiting values
Table 4.
Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V).
Symbol
V
CC
I
IK
I
OK
I
O
I
CC
I
GND
T
stg
P
tot
Parameter
supply voltage
input clamping current
output clamping current
output current
supply current
ground current
storage temperature
total power dissipation
DIP14 package
SO14, and (T)SSOP14
packages
[1]
[2]
[2]
Conditions
V
I
<
0.5
V or V
I
> V
CC
+ 0.5 V
V
O
<
0.5
V or V
O
> V
CC
+ 0.5 V
0.5
V < V
O
< V
CC
+ 0.5 V
[1]
[1]
Min
0.5
-
-
-
-
50
65
-
-
Max
+7
20
20
25
50
-
+150
750
500
Unit
V
mA
mA
mA
mA
mA
C
mW
mW
The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
For DIP14 package: P
tot
derates linearly with 12 mW/K above 70
C.
For SO14 package: P
tot
derates linearly with 8 mW/K above 70
C.
For (T)SSOP14 packages: P
tot
derates linearly with 5.5 mW/K above 60
C.
74HC_HCT20
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2012. All rights reserved.
Product data sheet
Rev. 3 — 3 September 2012
3 of 16
NXP Semiconductors
74HC20; 74HCT20
Dual 4-input NAND gate
8. Recommended operating conditions
Table 5.
Recommended operating conditions
Voltages are referenced to GND (ground = 0 V)
Symbol Parameter
V
CC
V
I
V
O
T
amb
t/V
supply voltage
input voltage
output voltage
ambient temperature
input transition rise and fall rate
V
CC
= 2.0 V
V
CC
= 4.5 V
V
CC
= 6.0 V
Conditions
74HC20
Min
2.0
0
0
40
-
-
-
Typ
5.0
-
-
+25
-
1.67
-
Max
6.0
V
CC
V
CC
+125
625
139
83
74HCT20
Min
4.5
0
0
40
-
-
-
Typ
5.0
-
-
+25
-
1.67
-
Max
5.5
V
CC
V
CC
+125
-
139
-
V
V
V
C
ns/V
ns/V
ns/V
Unit
9. Static characteristics
Table 6.
Static characteristics
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
Symbol Parameter
74HC20
V
IH
HIGH-level
input voltage
V
CC
= 2.0 V
V
CC
= 4.5 V
V
CC
= 6.0 V
V
IL
LOW-level
input voltage
V
CC
= 2.0 V
V
CC
= 4.5 V
V
CC
= 6.0 V
V
OH
HIGH-level
output voltage
V
I
= V
IH
or V
IL
I
O
=
20 A;
V
CC
= 2.0 V
I
O
=
20 A;
V
CC
= 4.5 V
I
O
=
20 A;
V
CC
= 6.0 V
I
O
=
4.0
mA; V
CC
= 4.5 V
I
O
=
5.2
mA; V
CC
= 6.0 V
V
OL
LOW-level
output voltage
V
I
= V
IH
or V
IL
I
O
= 20
A;
V
CC
= 2.0 V
I
O
= 20
A;
V
CC
= 4.5 V
I
O
= 20
A;
V
CC
= 6.0 V
I
O
= 4.0 mA; V
CC
= 4.5 V
I
O
= 5.2 mA; V
CC
= 6.0 V
I
I
I
CC
input leakage
current
supply current
V
I
= V
CC
or GND;
V
CC
= 6.0 V
V
I
= V
CC
or GND; I
O
= 0 A;
V
CC
= 6.0 V
-
-
-
-
-
-
-
0
0
0
0.15
0.16
-
-
0.1
0.1
0.1
0.26
0.26
0.1
2
-
-
-
-
-
-
-
0.1
0.1
0.1
0.33
0.33
1
20
-
-
-
-
-
-
-
0.1
0.1
0.1
0.4
0.4
1
40
V
V
V
V
V
A
A
1.9
4.4
5.9
3.98
5.48
2.0
4.5
6.0
4.32
5.81
-
-
-
-
-
1.9
4.4
5.9
3.84
5.34
-
-
-
-
-
1.9
4.4
5.9
3.7
5.2
-
-
-
-
-
V
V
V
V
V
1.5
3.15
4.2
-
-
-
1.2
2.4
3.2
0.8
2.1
2.8
-
-
-
0.5
1.35
1.8
1.5
3.15
4.2
-
-
-
-
-
-
0.5
1.35
1.8
1.5
3.15
4.2
-
-
-
-
-
-
0.5
1.35
1.8
V
V
V
V
V
V
Conditions
Min
25
C
Typ
Max
40 C
to +85
C 40 C
to +125
C
Unit
Min
Max
Min
Max
74HC_HCT20
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2012. All rights reserved.
Product data sheet
Rev. 3 — 3 September 2012
4 of 16
NXP Semiconductors
74HC20; 74HCT20
Dual 4-input NAND gate
Table 6.
Static characteristics
…continued
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
Symbol Parameter
C
I
74HCT20
V
IH
V
IL
V
OH
HIGH-level
input voltage
LOW-level
input voltage
HIGH-level
output voltage
V
CC
= 4.5 V to 5.5 V
V
CC
= 4.5 V to 5.5 V
V
I
= V
IH
or V
IL
; V
CC
= 4.5 V
I
O
=
20 A
I
O
=
4.0
mA
V
OL
LOW-level
output voltage
V
I
= V
IH
or V
IL
; V
CC
= 4.5 V
I
O
= 20
A
I
O
= 5.2 mA
I
I
I
CC
I
CC
input leakage
current
supply current
additional
supply current
V
I
= V
CC
or GND;
V
CC
= 5.5 V
V
I
= V
CC
or GND; I
O
= 0 A;
V
CC
= 5.5 V
per input pin;
V
I
= V
CC
2.1 V; I
O
= 0 A;
other inputs at V
CC
or GND;
V
CC
= 4.5 V to 5.5 V
-
-
-
-
-
0
0.15
-
-
30
0.1
0.26
0.1
2
108
-
-
-
-
-
0.1
0.33
1
20
135
-
-
-
-
-
0.1
0.4
1
40
147
V
V
A
A
A
4.4
3.98
4.5
4.32
-
-
4.4
3.84
-
-
4.4
3.7
-
-
V
V
2.0
-
1.6
1.2
-
0.8
2.0
-
-
0.8
2.0
-
-
0.8
V
V
input
capacitance
Conditions
Min
-
25
C
Typ
3.5
Max
-
40 C
to +85
C 40 C
to +125
C
Unit
Min
-
Max
-
Min
-
Max
-
pF
C
I
input
capacitance
-
3.5
-
-
-
-
-
pF
74HC_HCT20
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2012. All rights reserved.
Product data sheet
Rev. 3 — 3 September 2012
5 of 16
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