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MC74HC244A_14 Datasheet, PDF (1/7 Pages) ON Semiconductor – Octal 3-State Noninverting Buffer/Line Driver/ Line Receiver | |||
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MC74HC244A
Octal 3-State Noninverting
Buffer/Line Driver/
Line Receiver
HighâPerformance SiliconâGate CMOS
The MC74HC244A is identical in pinout to the LS244. 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 3âstate memory address drivers, clock drivers, and
other busâoriented systems. The device has noninverting outputs and
two activeâlow output enables.
The HC244A is similar in function to the HC240A.
Features
⢠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
⢠Chip Complexity: 136 FETs or 34 Equivalent Gates
⢠NLV Prefix for Automotive and Other Applications Requiring
Unique Site and Control Change Requirements; AECâQ100
Qualified and PPAP Capable
⢠These Devices are PbâFree, Halogen Free/BFR Free and are RoHS
Compliant
A1 2
A2 4
A3 6
DATA
INPUTS
A4 8
B1 11
B2 13
B3 15
B4 17
LOGIC DIAGRAM
18 YA1
16 YA2
14 YA3
12 YA4
NONINVERTING
9 YB1 OUTPUTS
7 YB2
5 YB3
3 YB4
OUTPUT
ENABLES
ENABLE A 1
ENABLE B 19
PIN 20 = VCC
PIN 10 = GND
http://onsemi.com
SOICâ20
DW SUFFIX
CASE 751D
TSSOPâ20
DT SUFFIX
CASE 948E
PIN ASSIGNMENT
ENABLE A 1
A1
2
YB4 3
A2 4
YB3 5
A3 6
YB2 7
A4 8
YB1 9
GND 10
20 VCC
19 ENABLE B
18 YA1
17 B4
16 YA2
15 B3
14 YA3
13 B2
12 YA4
11 B1
MARKING DIAGRAMS
20
20
HC244A
AWLYYWWG
1
SOICâ20
HC
244A
ALYWG
G
1
TSSOPâ20
A
WL, L
YY, Y
WW, W
G or G
= Assembly Location
= Wafer Lot
= Year
= Work Week
= PbâFree Package
(*Note: Microdot may be in either location)
FUNCTION TABLE
Inputs
Outputs
Enable A,
Enable B A, B YA, YB
L
L
L
L
H
H
H
X
Z
Z = high impedance
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 5 of this data sheet.
© Semiconductor Components Industries, LLC, 2014
1
August, 2014 â Rev. 15
Publication Order Number:
MC74HC244A/D
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