Datasheet M74HC298 Datasheet (SGS Thomson Microelectronics)

Page 1
QUAD 2 CHANNEL MULTIPLEXER/REGISTER
.HIGH SPEED
f
= 73 MHz(typ.) AT VCC=5V
MAX
.LOWPOWERDISSIPATION
ICC=4µA(MAX.) AT TA=25°C
.HIGH NOISEIMMUNITY
V
NIH=VNIL
=28%VCC(MIN.)
.OUTPUT DRIVE CAPABILITY
10 LSTTL LOADS
.SYMMETRICALOUTPUT IMPEDANCE
IOH =IOL= 4 mA(MIN.)
.BALANCEDPROPAGATION DELAYS
t
PLH=tPHL
.WIDE OPERATINGVOLTAGE RANGE
VCC(OPR)= 2V TO6 V
.PIN ANDFUNCTION COMPATIBLE
WITH 54/74LS298
DESCRIPTION
The M54/74HC298 isahighspeedCMOSQUAD2­CHANNEL MULTIPLEXER/REGISTER fabricated in silicongate C2MOStechnology.
It has the same high speed performance of LSTTL combined withtrue CMOSlowpower consumption. Thesecircuits are controlled by the signals WORD SELECT and CLOCK. When the WORD SELECT input is taken low Word 1 (A1, B1, C1 and D1) is presented to the input of the flip-flops, and when WORDSELECT ishighWord 2(A2,B2,C2 and D2) is presented to theinputs of theflip-flops. Theselect wordis clockedtothe outputterminals onthe nega­tive edge oftheclockpulse. Allinputsare equipped with protection circuitsagainst static discharge and transient excess voltage.
M54HC298 M74HC298
B1R
(PlasticPackage)
M1R
(MicroPackage)
ORDER CODES :
M54HC 298F1R M74H C298M1R M74HC 298B1R M74HC2 98C1R
PIN CONNECTIONS(top view)
F1R
(CeramicPackage)
C1R
(Chip Carrier)
INPUT AND OUTPUT EQUIVALENT CIRCUIT
October 1992
NC = No Internal Connection
1/11
Page 2
M54/M74HC298
TRUTH TABLE
INPUTS OUTPUTS
WORD SELECT CLOCK QA QB QC QD
La1b1c1d1
Ha2b2c2d2
X : DON’T CARE(INCLUDINGTRANSITION) a1, a2, ETC : THE LEVELOF STEAY STATEINPUT ATa1, a2,etc. QA0, QB0,ETC: THE LEVEL OF QA, QB,ETC ENTEREDON THE MOSTRECENT NEGATIVETRANSITION OF THECLOCK INPUT.
LOGI C DI AGRAM
X QA0 QB0 QC0 QD0
2/11
Page 3
M54/M74HC298
PIN DESC RIPTION
IEC LOGIC SYMBOL
PIN No SYMBOL NAME AND FUNCTION
1, 2, 5, 6 A2, B2,
Word 2 Data Inputs
C2, D2
3, 4, 7, 9 A1, B1,
Word 1 Data Inputs
C1, D1
12 to 15 QA to QD Outputs
10 WORD
Word Select Input
SELECT
11 CLOCK Clock Input (HIGH to
LOW, Edge-triggered)
8 GND Ground (0V)
16 V
CC
Positive Supply Voltage
ABSOLU TE M AXIMU M R AT INGS
Symbol Parameter Value Unit
V
CC
V
V
O
I
IK
I
OK
I
O
or I
I
CC
P
D
T
stg
T
AbsoluteMaximumRatingsarethose valuesbeyond whichdamage to thedevice mayoccur.Functional operation under these conditionisnotimplied. (*)500 mW: 65oC derateto300 mWby 10mW/oC: 65oCto85oC
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 (10sec) 300
L
o
C
o
C
RECO MM ENDED OPERATI N G CO NDI TIONS
Symbol Parameter Value Unit
V
V
T
t
V
r,tf
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
= 6 V 0 to 400
V
CC
V V
o
C
o
C
3/11
Page 4
M54/M74HC298
DC SPECIFICATIONS
Symbol Parameter
V
V
V
V
I
High Level Input
IH
Voltage
Low Level Input
IL
Voltage
High Level
OH
Output Voltage
Low Level Output
OL
Voltage
I
Input Leakage
I
Current Quiescent Supply
CC
Current
Test Conditions Value
V
(V)
CC
=25oC
A
54HC and 74HC
Min. Typ. Max. Min. Max. Min. Max.
-40 to 85oC 74HC
-55 to 125oC 54HC
Unit
T
2.0 1.5 1.5 1.5
4.5 3.15 3.15 3.15
6.0 4.2 4.2 4.2
2.0 0.5 0.5 0.5
4.5 1.35 1.35 1.35
6.0 1.8 1.8 1.8
2.0
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
=
V
I
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 4 40 80 µA
V
V
V
V
4/11
Page 5
M54/M74HC298
AC ELECTRICAL CHARACTERISTICS (CL=50pF,Inputtr=tf=6ns)
Test Conditions Value
T
=25oC
Symbol Parameter
t t
TLH THL
Output Transition Time
V
CC
(V)
2.0 30 75 95 110
4.5 8151922
A
54HC and 74HC
Min. Typ. Max. Min. Max. Min. Max.
6.0 7131619
t
PLH
t
PHL
f
MAX
Propagation Delay Time (CLOCK - Q)
Maximum Clock Frequency
2.0 45 125 155 190
4.5 15 25 31 38
6.0 13 21 26 32
2.0 7 22 5.6 4.6
4.5 35 67 28 23
6.0 41 79 33 25
t
W(H)
t
W(L)
Minimum Pulse Width (CLOCK)
Minimum Set-up
t
s
Time (A, B, C, D)
t
Minimum Set-up
s
Time (W. S.)
Minimum Hold
t
h
Time (A, B, C, D)
Minimum Hold
t
h
Time (W. S.)
C
C
PD
Input Capacitance 5 10 10 10 pF
IN
(*) Power Dissipation
2.0 18 75 95 110
4.5 6151922
6.0 6131619
2.0 12 50 65 75
4.5 3101315
6.0 2 9 11 13
2.0 30 75 95 110
4.5 8151922
6.0 6131619
2.0 25 30 40
4.5 5 6 8
6.0 4 5 7
2.0 0 0 0
4.5 0 0 0
6.0 0 0 0
39
Capacitance
(*) CPDisdefined as the value ofthe IC’sinternal equivalent capacitance which is calculated fromthe operatingcurrent consumption without load. (Referto Test Circuit).Average operting currentcanbe obtained by the followingequation.ICC(opr) = CPD•VCC•fIN+ICC/4 (perbit),and theCPDfor operating current can be obtained by the following equation: CPD= 27 +12 xn
-40 to 85oC 74HC
-55 to 125oC 54HC
Unit
ns
ns
MHz
ns
ns
ns
ns
ns
pF
5/11
Page 6
M54/M74HC298
SWITCHING CHARACTERISTICS TEST WAVEFORM
TEST CIRCUIT
TRANSITIONTIME AND VIH,VILOFINPUTWAVEFORMIS THE SAMEAS THATIN CASEOFSWITCHINGCHARACTERISTICSTEST.
6/11
Page 7
Plastic DIP16 (0.25) MECHANICAL DATA
M54/M74HC298
DIM.
MIN. TYP. MAX. MIN. TYP. MAX.
a1 0.51 0.020
B 0.77 1.65 0.030 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 17.78 0.700
F 7.1 0.280
I 5.1 0.201
L 3.3 0.130
Z 1.27 0.050
mm inch
P001C
7/11
Page 8
M54/M74HC298
Ceramic DIP16/1 MECHANICAL DATA
DIM.
MIN. TYP. MAX. MIN. TYP. MAX.
A 20 0.787 B 7 0.276 D 3.3 0.130 E 0.38 0.015
e3 17.78 0.700
F 2.29 2.79 0.090 0.110 G 0.4 0.55 0.016 0.022 H 1.17 1.52 0.046 0.060
L 0.22 0.31 0.009 0.012 M 0.51 1.27 0.020 0.050 N 10.3 0.406
P 7.8 8.05 0.307 0.317
Q 5.08 0.200
mm inch
8/11
P053D
Page 9
SO16 (Narrow) MECHANICAL DATA
M54/M74HC298
DIM.
MIN. TYP. MAX. MIN. TYP. MAX.
A 1.75 0.068 a1 0.1 0.2 0.004 0.007 a2 1.65 0.064
b 0.35 0.46 0.013 0.018
b1 0.19 0.25 0.007 0.010
C 0.5 0.019
c1 45° (typ.)
D 9.8 10 0.385 0.393
E 5.8 6.2 0.228 0.244
e 1.27 0.050
e3 8.89 0.350
F 3.8 4.0 0.149 0.157
G 4.6 5.3 0.181 0.208
L 0.5 1.27 0.019 0.050
M 0.62 0.024
S8°(max.)
mm inch
P013H
9/11
Page 10
M54/M74HC298
PLCC20 MECHANICAL DATA
DIM.
MIN. TYP. MAX. MIN. TYP. MAX.
A 9.78 10.03 0.385 0.395
B 8.89 9.04 0.350 0.356
D 4.2 4.57 0.165 0.180 d1 2.54 0.100 d2 0.56 0.022
E 7.37 8.38 0.290 0.330
e 1.27 0.050
e3 5.08 0.200
F 0.38 0.015 G 0.101 0.004 M 1.27 0.050
M1 1.14 0.045
mm inch
10/11
P027A
Page 11
M54/M74HC298
Information furnishedis believed to be accurate and reliable. However, SGS-THOMSON Microelectronicsassumes no responsability for the consequences of useof suchinformation nor for any infringement of patents or other rights of third parties which may results from its use. No license is granted byimplication or otherwiseunder any patentor patentrights ofSGS-THOMSON Microelectronics.Specificationsmentioned in this publication are subjectto changewithout notice. This publication supersedes andreplaces all information previouslysupplied. SGS-THOMSON Microelectronicsproducts are not authorized foruse ascritical componentsin life supportdevices or systems without express written approval of SGS-THOMSON Microelectonics.
1994SGS-THOMSON Microelectronics- All Rights Reserved
Australia -Brazil - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta -Morocco - The Netherlands-
Singapore -Spain - Sweden- Switzerland - Taiwan - Thailand- UnitedKingdom - U.S.A
SGS-THOMSON Microelectronics GROUP OFCOMPANIES
11/11
Loading...