Page 1
QUAD 2 CHANNEL MULTIPLEXER (INV.)
■ HIGH SPEED:t
■ LOWPOWERDISSIPATION:
=8µA (MAX.)at TA=25oC
I
CC
■ HIGH NOISE IMMUNITY:
V
NIH=VNIL
■ 50Ω TRANSMISSION LINE DRIVING
CAPABILITY
■ SYMMETRICAL OUTPUT IMPEDANCE:
|I
|=IOL=24mA(MIN)
OH
■ BALANCE DPROPAGATIONDELAYS:
t
≅ t
PLH
PHL
■ OPERATINGVOLTAGERANGE:
V
(OPR) = 2V to 6V
CC
■ PIN AND FUNCTION COMPATIBLE WITH
74SERIES158
■ IMPROVED LATCH-UP IMMUNITY
DESCRIPTION
The AC158 is an high-speed CMOS QUAD
2-CHANNEL MULTIPLEXER (INVERTING)
fabricated with sub-micron silicon gate and
double-layermetal wiring C
ideal for low power applications maintaining high
speed operation similar to equivalent Bipolar
SchottkyTTL.
=4 ns(TYP.)atVCC=5V
PD
=28%VCC(MIN.)
2
MOS technology. Itis
74AC158
PRELIMINARY DATA
B
(Plastic Package)
(Micro Package)
ORDERCODES:
74AC158B 74AC158M
It consists of four 2-input digital multiplexers with
common select and strobe inputs. It is an
inverting multiplexer. When the STROBE input is
held high selection of data is inhibit and all the
outputs become high. The SELECT decoding
determines whether the A or B inputs get routed
to theircorresponding Y outputs.
All inputs and outputs are equipped with
protectioncircuits against static discharge, giving
them 2KV ESD immunity and transient excess
voltage.
M
PINCONNECTION ANDIEC LOGICSYMBOLS
May 1997
1/9
Page 2
74AC158
INPUTAND OUTPUT EQUIVALENTCIRCUIT
PIN DESCRIPTION
PI N No SYM B O L NAME AND FUNC T I ON
1 SELECT Common Data Select Input
2,5, 11,14 1Ato4A Data Inputs From
Source A
3,6, 10,13 1Bto4B Data Inputs From
Source B
4,7, 9,12 1Yto4Y Multiplexer Outputs
15 STROBE Strobe Input
8 GND Ground (0V)
16 V
CC
Positive Supply Voltage
TRUTH TABLE
INPUT OUTPUT
ST RO B E SE L ECT A B Y
HXXXH
LLLXH
LLHXL
LHXLH
LHXHL
LOGICDIAGRAM
2/9
Page 3
74AC158
ABSOLUTE MAXIMUM RATING
Symb o l Parame t er Value Unit
V
V
V
I
I
OK
I
orI
I
CC
T
T
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied.
RECOMMENDED OPERATINGCONDITIONS
Symb o l Parame t er Val u e Uni t
V
V
V
T
dt/dv Input Rise and Fall Time V
1) VINfrom30%to 70%of V
Supply Voltage -0.5to+7 V
CC
DC Input Voltage -0.5toVCC+0.5 V
I
DC Output Voltage -0.5toVCC+0.5 V
O
DC Input Diode Current ± 20 mA
IK
DC Output Diode Current ± 20 mA
DC Output Current ± 50 mA
O
DC VCCor Ground Current ± 200 mA
GND
Storage Temperature -65to+150
stg
Lead Temperature (10 sec) 300
L
Supply Voltage 2to6 V
CC
Input Voltage 0toV
I
Output Voltage 0toV
O
Operating Temperature: -40to+85
op
= 3.0, 4.5 or 5.5 V(note 1) 8 ns/V
CC
CC
CC
CC
o
C
o
C
V
V
o
C
3/9
Page 4
74AC158
DC SPECIFICATIONS
Symbol Parameter Test Condition s Value Unit
V
CC
(V)
High Level Input Voltage 3.0 VO=0.1V or
V
IH
4.5 3.15 2.25 3.15
=25oC-40to85
T
A
Min. Typ . Ma x. Min . Max.
2.1 1.5 2.1
V
-0.1V
CC
o
C
5.5 3.85 2.75 3.85
Low Level Input Voltage 3.0 VO=0.1V or
V
IL
4.5 2.25 1.35 1.35
-0.1V
V
CC
1.5 0.9 0.9
5.5 2.75 1.65 1.65
High Level Output
V
OH
Voltage
Low Level Output
V
OL
Voltage
Input Leakage Current
I
I
Quiescent Supply
I
CC
3.0
4.5 I
5.5 I
3.0 I
V
I
V
IH
V
4.5 I
5.5 I
3.0
4.5 I
5.5 I
3.0 I
V
I
V
IH
V
4.5 I
5.5 I
5.5
IO=-50µA 2.9 2.99 2.9
(*)
or
IL
=-50µA 4.4 4.49 4.4
O
=
=-50µA 5.4 5.49 5.4
O
=-12 mA 2.56 2.46
O
=-24 mA 3.86 3.76
O
=-24 mA 4.86 4.76
O
IO=50µA0.0020.1 0.1
(*)
=
or
IL
=50µA0.0010.1 0.1
O
=50µA0.0010.1 0.1
O
=12mA 0.36 0.44
O
=24mA 0.36 0.44
O
=24mA 0.36 0.44
O
VI=VCCorGND ±0.1 ±1 µA
5.5 VI=VCCorGND 8 80 µA
Current
Dynamic Output Current
I
OLD
(note 1, 2)
I
OHD
1) Maximum test duration 2ms, one output loaded at time
2) Incident wave switching is guaranteed on transmission lines with impedances as low as 50Ω.
5.5 V
=1.65 Vmax 75 mA
OLD
V
=3.85Vmin -75 mA
OHD
V
V
V
V
4/9
Page 5
AC ELECTRICAL CHARACTERISTICS (CL= 50 pF, RL=500 Ω, Inputtr=tf=3ns)
74AC158
Symbol Parameter Test C onditi on Value Unit
o
C
ns
ns
ns
t
Propagation Delay Time
PLH
t
SELECT to Y
PHL
Propagation Delay Time
t
PLH
STROBE to Y
t
PHL
Propagation Delay Time
t
PLH
t
A, B to Y
PHL
(*) Voltagerange is3.3V± 0.3V
(**) Voltagerange is5V± 0.5V
V
(V)
3.3
5.0
3.3
5.0
3.3
5.0
CC
=25oC-40to85
T
A
Min. Typ . Ma x. Min . Max.
(*)
(**)
(*)
(**)
(*)
(**)
1.5 7.0 11.5 1.5 12.5
1.5 5.0 9.0 1.5 10.0
1.5 7.0 11.0 1.5 12.0
1.55.58.51.59.5
1.55.08.01.58.5
1.54.07.01.57.5
CAPACITIVE CHARACTERISTICS
Symbol Parameter Test Condition s Value Unit
T
V
CC
(V)
Input Capacitance 5.0 4 pF
C
IN
Power Dissipation
C
PD
5.0 TBD pF
=25oC-40to85
A
Min. Typ . Ma x. Min . Max.
Capacitance (note 1)
1) CPDis 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 operating current can be obtained by the following equation. I
(opr) = CPD• VCC• fIN+ICC/n (per circuit)
CC
o
C
TEST CIRCUIT
5/9
Page 6
74AC158
WAVEFORM 1: PROPAGATIONDELAYS FOR NON-INVERTING CONDITIONS
WAVEFORM 2: PROPAGATIONDELAYS FOR INVERTINGCONDITIONS
6/9
Page 7
Plastic DIP-16 (0.25) MECHANICALDATA
74AC158
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
7/9
Page 8
74AC158
SO-16 MECHANICAL DATA
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
S 8 (max.)
mm inch
8/9
P013H
Page 9
74AC158
Information furnished is believed to be accurateand reliable. However, SGS-THOMSONMicroelectronicsassumesno responsability for the
consequencesof use of such information nor for any infringement of patentsor otherrightsofthird parties which may results from its use. No
licenseis grantedby implication or otherwise underany patent or patentrights of SGS-THOMSONMicroelectronics.Specifications mentioned
in this publication are subject to change without notice. This publication supersedes and replacesall informationpreviouslysupplied.
SGS-THOMSONMicroelectronics productsare notauthorized for useas criticalcomponents in life supportdevices or systems withoutexpress
writtenapproval of SGS-THOMSON Microelectonics.
1997 SGS-THOMSONMicroelectronics - Printedin Italy - All Rights Reserved
Australia- Brazil - Canada - China- France- Germany- HongKong - Italy- Japan- Korea- Malaysia- Malta - Morocco- TheNetherlands-
Singapore- Spain- Sweden- Switzerland - Taiwan - Thailand -United Kingdom- U.S.A
SGS-THOMSONMicroelectronics GROUPOF COMPANIES
.
9/9
Loading...