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MC74HC157A Schematic ( PDF Datasheet ) - ON Semiconductor

Teilenummer MC74HC157A
Beschreibung Quad 2-Input Data Selectors / Multiplexers
Hersteller ON Semiconductor
Logo ON Semiconductor Logo 




Gesamt 10 Seiten
MC74HC157A Datasheet, Funktion
MQSeuClae7dc4tH2oS−ChrIs1ene5p/t7u4MUAtu.DclotaimptalexersHigh−Performance Silicon−Gate CMOS
ataThe MC74HC157A is identical in pinout to the LS157. The device
.Dinputs are compatible with standard CMOS outputs; with pullup
resistors, they are compatible with LSTTL outputs.
wThis device routes 2 nibbles (A or B) to a single port (Y) as
wdetermined by the Select input. The data is presented at the outputs in
w noninverted form. A high level on the Output Enable input sets all four
mY outputs to a low level.
oFeatures
.cOutput Drive Capability: 10 LSTTL Loads
Outputs Directly Interface to CMOS, NMOS, and TTL
Operating Voltage Range: 2.0 to 6.0 V
ULow Input Current: 1.0 mA
t4High Noise Immunity Characteristic of CMOS Devices
In Compliance with the Requirements Defined by JEDEC Standard
eNo. 7A
Chip Complexity: 82 FETs or 20.5 Equivalent Gates
.DataShePb−Free Packages are Available*
16
1
http://onsemi.com
MARKING
DIAGRAMS
16
PDIP−16
N SUFFIX
CASE 648
MC74HC157AN
AWLYYWWG
1
16
1
16
1
16
SOIC−16
D SUFFIX
CASE 751B
HC157AG
AWLYWW
1
TSSOP−16
DT SUFFIX
CASE 948F
16
HC
157A
ALYWG
G
1
16
1
SOEIAJ−16
F SUFFIX
CASE 966
16
74HC157A
ALYWG
1
w A = Assembly Location
L, WL = Wafer Lot
Y, YY = Year
w W, WW = Work Week
G = Pb−Free Package
w mG = Pb−Free Package
o(Note: Microdot may be in either location)
t4U.cORDERING INFORMATION
eSee detailed ordering and shipping information in the package
edimensions section on page 2 of this data sheet.
ataSh*For additional information on our Pb−Free strategy and soldering details, please
.Ddownload the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
ww© Semiconductor Components Industries, LLC, 2005
wJune, 2005 − Rev. 9
1
Publication Order Number:
MC74HC157A/D






MC74HC157A Datasheet, Funktion
MC74HC157A
EXPANDED LOGIC DIAGRAM
2
A0
3
B0
A1 5
NIBBLE
OUTPUTS
B1 6
11
A2
10
B2
A3 14
B3
OUTPUT ENABLE
SELECT
13
15
1
4 Y0
7
Y1
9 Y2
DATA
OUTPUTS
12 Y3
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