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.
http://onsemi.com
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.
SOIC−20
DW SUFFIX
CASE 751D
TSSOP−20
DT SUFFIX
CASE 948E
The HC240A is similar in function to the HC244A.
PIN ASSIGNMENT
Features
ENABLE A
1
2
3
4
5
20
19
18
17
16
V
CC
• Output Drive Capability: 15 LSTTL Loads
• Outputs Directly Interface to CMOS, NMOS, and TTL
• Operating Voltage Range: 2.0 to 6.0 V
• Low Input Current: 1 mA
• High Noise Immunity Characteristic of CMOS Devices
• In Compliance with the Requirements Defined by JEDEC Standard
No. 7 A
A1
YB4
A2
ENABLE B
YA1
B4
YB3
YA2
B3
A3
YB2
A4
6
15
14
13
12
11
7
YA3
B2
8
• Chip Complexity: 120 FETs or 30 Equivalent Gates
• NLV Prefix for Automotive and Other Applications Requiring
Unique Site and Control Change Requirements; AEC−Q100
Qualified and PPAP Capable
YB1
GND
9
YA4
B1
10
MARKING DIAGRAMS
• These Devices are Pb−Free, Halogen Free and are RoHS Compliant
20
20
1
HC
LOGIC DIAGRAM
HC240A
AWLYYWWG
240A
ALYWG
G
2
4
6
8
18
16
14
12
A1
A2
A3
A4
YA1
YA2
YA3
YA4
1
SOIC−20
TSSOP−20
A
WL, L
YY, Y
= Assembly Location
= Wafer Lot
= Year
WW, W = Work Week
G or G
= Pb−Free Package
DATA
INVERTING
OUTPUTS
(Note: Microdot may be in either location)
NPUTS
11
13
15
17
9
7
5
3
B1
B2
B3
B4
YB1
YB2
YB3
YB4
FUNCTION TABLE
Inputs
Enable A,
Enable B A, B
Outputs
YA, YB
L
L
H
L
H
X
H
L
Z
Z = high impedance
1
ENABLE A
ENABLE B
OUTPUT
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 5 of this data sheet.
PIN 20 = V
CC
PIN 10 = GND
19
ENABLES
© Semiconductor Components Industries, LLC, 2014
1
Publication Order Number:
August, 2014 − Rev. 13
MC74HC240A/D