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MC74HC240A Datasheet(PDF) 1 Page - ON Semiconductor

Part No. MC74HC240A
Description  Octal 3-State Inverting Buffer/Line Driver/Line Receiver
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Maker  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
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MC74HC240A Datasheet(HTML) 1 Page - ON Semiconductor

   
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© Semiconductor Components Industries, LLC, 2000
May, 2000 – Rev. 9
1
Publication Order Number:
MC74HC240A/D
MC74HC240A
Octal 3-State Inverting
Buffer/Line Driver/Line
Receiver
High–Performance Silicon–Gate CMOS
The MC74HC240A is identical in pinout to the LS240. The device
inputs are compatible with standard CMOS outputs; with pullup
resistors, they are compatible with LSTTL outputs.
This octal noninverting buffer/line driver/line receiver is designed
to be used with 3–state memory address drivers, clock drivers, and
other sub–oriented systems. The device has inverting outputs and two
active–low output enables.
The HC240A is similar in function to the HC244A.
Output Drive Capability: 15 LSTTL Loads
Outputs Directly Interface to CMOS, NMOS, and TTL
Operating Voltage Range: 2 to 6 V
Low Input Current: 1 µA
High Noise Immunity Characteristic of CMOS Devices
In Compliance with the Requirements Defined by JEDEC Standard
No. 7A
Chip Complexity: 120 FETs or 30 Equivalent Gates
LOGIC DIAGRAM
DATA
INPUTS
A1
A2
A3
A4
B1
B2
B3
B4
17
15
13
11
8
6
4
218
16
14
12
9
7
5
3
YB4
YB3
YB2
YB1
YA4
YA3
YA2
YA1
INVERTING
OUTPUTS
PIN 20 = VCC
PIN 10 = GND
OUTPUT
ENABLES
ENABLE A
ENABLE B
1
19
FUNCTION TABLE
Inputs
Outputs
Enable A,
Enable B
A, B
YA, YB
LL
H
LH
L
HX
Z
Z = high impedance
http://onsemi.com
MARKING
DIAGRAMS
1
20
A
= Assembly Location
WL = Wafer Lot
YY = Year
WW = Work Week
SOIC WIDE–20
DW SUFFIX
CASE 751D
HC240A
AWLYYWW
PDIP–20
N SUFFIX
CASE 738
1
20
MC74HC240AN
AWLYYWW
TSSOP–20
DT SUFFIX
CASE 948E
1
20
1
20
1
20
Device
Package
Shipping
ORDERING INFORMATION
MC74HC240AN
PDIP–20
1440 / Box
MC74HC240ADW
SOIC–WIDE
38 / Rail
MC74HC240ADWR2
SOIC–WIDE
1000 / Reel
MC74HC240ADT
TSSOP–20
75 / Rail
MC74HC240ADTR2
TSSOP–20
2500 / Reel
PIN ASSIGNMENT
A3
A2
YB4
A1
ENABLE A
GND
YB1
A4
YB2
YB3
5
4
3
2
1
10
9
8
7
6
14
15
16
17
18
19
20
11
12
13
YA2
B4
YA1
ENABLE B
VCC
B1
YA4
B2
YA3
B3
HC
240A
ALYW
1
20


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