SGS Thomson Microelectronics M74HC20 Datasheet
.HIGH SPEED
tPD= 8 ns (TYP.) AT VCC=5V
.LOWPOWER DISSIPATION
ICC=1µA(MAX.)AT TA=25°C
.HIGH NOISEIMMUNITY
V
NIH=VNIL
=28%VCC(MIN.)
.OUTPUT DRIVE CAPABILITY
10 LSTTL LOADS
.SYMMETRICAL OUTPUT IMPEDANCE
IOH =IOL= 4 mA(MIN.)
.BALANCEDPROPAGATION DELAYS
t
PLH=tPHL
.WIDE OPERATINGVOLTAGERANGE
VCC(OPR)= 2 V TO 6 V
.PIN AND FUNCTION COMPATIBLE WITH
54/74LS20
M54HC20
M74HC20
DUAL 4-INPUT NANDGATE
B1R
(PlasticPackage)
M1R
(MicroPackage)
ORDER CODES :
M54HC 20F1R M74H C20M1R
M74HC 20B1R M 74HC20C1R
F1R
(CeramicPackage)
C1R
(Chip Carrier)
DESCRIPTION
The M54/74HC20 is a highspeed CMOS DUAL 4INPUT NAND GATE fabricated in silicon gate
C2MOStechnology.Ithasthesame highspeedperformance of LSTTL combined with true CMOS low
powerconsumption.
The internal circuit is composedof 3 stages includingbufferedoutput,whichgiveshighnoiseimmunity
andastableoutput.Allinputsareequippedwithprotectioncircuitsagainst staticdischargeandtransient
excess voltage.
INPUT AND OUTPUT EQUIVALENT CIRCUIT
PIN CONNECTIONS(top view)
NC =
No Internal
Connection
December1992
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M54/M74HC20
TRUTH TABLE
ABCDY
LXXXH
XLXXH
XXLXH
XXXLH
HHHHL
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
SCHEM ATIC CIR CUIT (Per Gate)
IEC LOGIC SYMBOL
ABSOLU TE MAXIMUM RATING S
Symbol Parameter Value Unit
V
CC
V
V
O
I
IK
I
OK
I
O
or I
I
CC
P
D
T
stg
T
L
AbsoluteMaximum Ratings arethose valuesbeyondwhichdamage tothedevicemayoccur. Functionaloperation under theseconditionisnotimplied.
(*)500 mW: ≅ 65oC derate to300mW by 10mW/oC: 65oCto85oC
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Supply Voltage -0.5 to +7 V
DC Input Voltage -0.5 to VCC+ 0.5 V
I
DC Output Voltage -0.5 to VCC+ 0.5 V
DC Input Diode Current ± 20 mA
DC Output Diode Current ± 20 mA
DC Output Source Sink Current Per Output Pin ± 25 mA
DC VCCor Ground Current ± 50 mA
GND
Power Dissipation 500 (*) mW
Storage Temperature -65 to +150
Lead Temperature (10 sec) 300
o
C
o
C
M54/M74HC20
RECO MM ENDED OPERAT IN G C ONDI TIONS
Symbol Parameter Value Unit
V
V
V
T
t
r,tf
DC SPECIFICA TIONS
Symbol Parameter
V
IH
V
V
OH
V
OL
I
I
CC
Supply Voltage 2 to 6 V
CC
Input Voltage 0 to V
I
Output Voltage 0 to V
O
Operating Temperature: M54HC Series
op
M74HC Series
CC
CC
-55 to +125
-40 to +85
Input Rise and Fall Time VCC= 2 V 0 to 1000 ns
V
= 4.5 V 0 to 500
CC
V
= 6 V 0 to 400
CC
Test Conditions Value
V
(V)
CC
=25oC
T
A
54HC and 74HC
-40 to 85oC
74HC
-55 to 125oC
Min. Typ. Max. Min. Max. Min. Max.
High Level Input
Voltage
2.0 1.5 1.5 1.5
4.5 3.15 3.15 3.15
6.0 4.2 4.2 4.2
Low Level Input
IL
Voltage
2.0 0.5 0.5 0.5
4.5 1.35 1.35 1.35
6.0 1.8 1.8 1.8
High Level
Output Voltage
Low Level Output
Voltage
Input Leakage
I
Current
Quiescent Supply
2.0
V
=
I
4.5 4.4 4.5 4.4 4.4
6.0 5.9 6.0 5.9 5.9
4.5 I
6.0 I
2.0
4.5 0.0 0.1 0.1 0.1
6.0 0.0 0.1 0.1 0.1
4.5 I
6.0 I
6.0
IO=-20 µA
V
IH
or
V
IL
=-4.0 mA 4.18 4.31 4.13 4.10
O
=-5.2 mA 5.68 5.8 5.63 5.60
O
V
=
I
IO=20µA
V
IH
or
V
IL
= 4.0 mA 0.17 0.26 0.33 0.40
O
= 5.2 mA 0.18 0.26 0.33 0.40
O
VI=VCCor GND ±0.1 ±1 ±1 µA
1.9 2.0 1.9 1.9
0.0 0.1 0.1 0.1
6.0 VI=VCCor GND 1 10 20 µA
Current
54HC
V
V
o
C
o
C
Unit
V
V
V
V
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