7420.PDF

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DUAL 4-INPUT NAND GATE
M54HC20
M74HC20
. HIGH SPEED
t PD = 8 ns (TYP.) AT V CC =5V
DUAL 4-INPUT NAND GATE
. HIGH NOISE IMMUNITY
V NIH =V NIL =28%V CC (MIN.)
I CC =1
A (MAX.) AT T A =25
°
C
. OUTPUT DRIVE CAPABILITY
. SYMMETRICAL OUTPUT IMPEDANCE
z
10 LSTTL LOADS
B1R
(Plastic Package)
F1R
(Ceramic Package)
. BALANCED PROPAGATION DELAYS
. WIDE OPERATING VOLTAGE RANGE
V CC (OPR) = 2 V TO 6 V
z
=I OL = 4 mA (MIN.)
t PLH =t PHL
. PIN AND FUNCTION COMPATIBLE WITH
M1R
(Micro Package)
C1R
(Chip Carrier)
54/74LS20
ORDER CODES :
M54HC20F1R
M74HC20M1R
M74HC20B1R
M74HC20C1R
PIN CONNECTIONS (top view)
DESCRIPTION
The M54/74HC20 is a high speed CMOS DUAL 4-
INPUT NAND GATE fabricated in silicon gate
C 2 MOS technology. It has the same high speed per-
formance of LSTTL combined with true CMOS low
power consumption.
The internal circuit is composed of 3 stages includ-
ing buffered output, which gives high noise immunity
and a stable output. All inputs are equipped with pro-
tection circuits against static discharge and transient
excess voltage.
INPUT AND OUTPUT EQUIVALENT CIRCUIT
NC =
No Internal
Connection
December 1992
1/9
. LOW POWER DISSIPATION
m
IOH
337930501.002.png
M54/M74HC20
TRUTH TABLE
IEC LOGIC SYMBOL
A
B
C
D
Y
L
X
X
X
H
X
L
X
X
H
X
X
L
X
H
X
X
X
L
H
H
H
H
H
L
PIN DESCRIPTION
PIN No
SYMBOL
NAME AND FUNCTION
1, 9
1A to 2A
Data Inputs
2, 10
1B to 2B
Data Inputs
3, 11
N. C.
Not Connected
4, 12
1C, 2C
Data Inputs
5, 13
1D, 2D
Data Inputs
6, 8
1Y to 2Y
Data Outputs
7
GND
Ground (0V)
14
V CC
Positive Supply Voltage
SCHEMATIC CIRCUIT (Per Gate)
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
V CC
Supply Voltage
-0.5 to +7
V
V I
DC Input Voltage
-0.5 to V CC + 0.5
V
V O
DC Output Voltage
-0.5 to V CC + 0.5
V
I IK
DC Input Diode Current
±
20
mA
I OK
DC Output Diode Current
±
20
mA
I O
DC Output Source Sink Current Per Output Pin
±
25
mA
I CC or I GND DC V CC or Ground Current
±
50
mA
P D
Power Dissipation
500 (*)
mW
T stg
Storage Temperature
-65 to +150
o C
o C
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied.
(*) 500 mW:
T L
Lead Temperature (10 sec)
300
@
65 o C derate to 300 mW by 10mW/ o C: 65 o Cto85 o C
2/9
337930501.003.png
M54/M74HC20
RECOMMENDED OPERATING CONDITIONS
Symbol
Parameter
Value
Unit
V CC
Supply Voltage
2 to 6
V
V I
Input Voltage
0 to V CC
V
V O
Output Voltage
0 to V CC
V
T op
Operating Temperature: M54HC Series
M74HC Series
-55 to +125
-40 to +85
o C
o C
t r ,t f
Input Rise and Fall Time
V CC = 2 V
0 to 1000
ns
V CC = 4.5 V
0 to 500
V CC = 6 V
0 to 400
DC SPECIFICATIONS
Test Conditions
Value
Symbol
Parameter
V CC
(V)
-55 to 125 o C
54HC
Min. Typ. Max. Min. Max. Min. Max.
-40 to 85 o C
74HC
Unit
V IH
High Level Input
Voltage
2.0
1.5
1.5
1.5
4.5
3.15
3.15
3.15
V
6.0
4.2
4.2
4.2
V IL
Low Level Input
Voltage
2.0
0.5
0.5
0.5
V
4.5
1.35
1.35
1.35
6.0
1.8
1.8
1.8
V OH
High Level
Output Voltage
2.0
V I =
V IH
or
V IL
1.9
2.0
1.9
1.9
4.5
I O =-20
m
A
4.4
4.5
4.4
4.4
V
6.0
5.9
6.0
5.9
5.9
4.5
I O =-4.0 mA 4.18 4.31
4.13
4.10
6.0
I O =-5.2 mA 5.68
5.8
5.63
5.60
V OL
Low Level Output
Voltage
2.0
V I =
V IH
or
V IL
0.0
0.1
0.1
0.1
4.5
I O =20
m
A
0.0
0.1
0.1
0.1
V
6.0
0.0
0.1
0.1
0.1
4.5
I O = 4.0 mA
0.17 0.26
0.33
0.40
6.0
I O = 5.2 mA
0.18 0.26
0.33
0.40
I I
Input Leakage
Current
6.0
V I =V CC or GND
±
0.1
1
±
1
m
A
I CC
Quiescent Supply
Current
6.0 V I =V CC or GND
1
10
20
m
A
3/9
T A =25 o C
54HC and 74HC
±
337930501.004.png
M54/M74HC20
AC ELECTRICAL CHARACTERISTICS (C L =50pF,Inputt r =t f =6ns)
Test Conditions
Value
Symbol
Parameter
V CC
(V)
-55 to 125 o C
54HC
Min. Typ. Max. Min. Max. Min. Max.
-40 to 85 o C
74HC
Unit
t TLH
t THL
Output Transition
Time
2.0
30
75
95
110
4.5
8
15
19
22
ns
6.0
7
13
16
19
t PLH
t PHL
Propagation
Delay Time
2.0
30
80
100
120
4.5
10
16
20
24
ns
6.0
9
14
17
20
C IN
Input Capacitance
5
10
10
10
pF
C PD (*) Power Dissipation
Capacitance
27
pF
(*) C PD is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without load.
(Refer to Test Circuit). Average operting current can be obtained by the following equation. I CC (opr) = C PD
•
V CC
f IN +I CC /2 (per Gate)
SWITCHING CHARACTERISTICS TEST CIRCUIT
TEST CIRCUIT I CC (Opr.)
INPUT WAVEFORM IS THE SAME AS THAT IN CASE OF SWITCHING CHARACTERISTICS TEST.
4/9
T A =25 o C
54HC and 74HC
•
337930501.005.png
M54/M74HC20
Plastic DIP14 MECHANICAL DATA
DIM.
mm
inch
MIN.
TYP.
MAX.
MIN.
TYP.
MAX.
a1
0.51
0.020
B
1.39
1.65
0.055
0.065
b
0.5
0.020
b1
0.25
0.010
D
20
0.787
E
8.5
0.335
e
2.54
0.100
e3
15.24
0.600
F
7.1
0.280
I
5.1
0.201
L
3.3
0.130
Z
1.27
2.54
0.050
0.100
P001A
5/9
337930501.001.png

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