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MC74HCT244A Datasheet(PDF) 1 Page - ON Semiconductor

Part No. MC74HCT244A
Description  Octal 3-State Noninverting Buffer/Line Driver/Line Receiver with LSTTL-Compatible Inputs
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Maker  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
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MC74HCT244A Datasheet(HTML) 1 Page - ON Semiconductor

   
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© Semiconductor Components Industries, LLC, 2000
May, 2000 – Rev. 9
1
Publication Order Number:
MC74HCT244A/D
MC74HCT244A
Octal 3-State Noninverting
Buffer/Line Driver/
Line Receiver with
LSTTL-Compatible Inputs
High–Performance Silicon–Gate CMOS
The MC74HCT244A is identical in pinout to the LS244. This
device may be used as a level converter for interfacing TTL or NMOS
outputs to High–Speed CMOS inputs. The HCT244A is an octal
noninverting buffer line driver line receiver designed to be used with
3–state memory address drivers, clock drivers, and other bus–oriented
systems. The device has non–inverted outputs and two active–low
output enables.
The HCT244A is the noninverting version of the HCT240. See also
HCT241.
Output Drive Capability: 15 LSTTL Loads
TTL NMOS–Compatible Input Levels
Outputs Directly Interface to CMOS, NMOS, and TTL
Operating Voltage Range: 4.5 to 5.5 V
Low Input Current: 1 µA
In Compliance with the Requirements Defined by JEDEC Standard
No. 7A
Chip Complexity: 112 FETs or 28 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
NONINVERTING
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
L
LH
H
HX
Z
Z = high impedance, X = don’t care
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
HCT244A
AWLYYWW
PDIP–20
N SUFFIX
CASE 738
1
20
MC74HCT244AN
AWLYYWW
TSSOP–20
DT SUFFIX
CASE 948E
1
20
1
20
1
20
Device
Package
Shipping
ORDERING INFORMATION
MC74HCT244AN
PDIP–20
1440 / Box
MC74HCT244ADW
SOIC–WIDE
38 / Rail
MC74HCT244ADWR2
SOIC–WIDE
1000 / Reel
MC74HCT244ADT
TSSOP–20
75 / Rail
MC74HCT244ADTR2
TSSOP–20
2500 / Reel
HCT
244A
ALYW
1
20
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


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