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MC54HCT244A Datasheet, PDF (1/7 Pages) Motorola, Inc – Octal 3-State Noninverting Buffer/Line Driver/Line Receiver with LSTTL-Compatible Inputs | |||
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MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Octal 3-State Noninverting
Buffer/Line Driver/
Line Receiver with
LSTTL-Compatible Inputs
HighâPerformance SiliconâGate CMOS
The MC54/74HCT244A is identical in pinout to the LS244. This device
may be used as a level converter for interfacing TTL or NMOS outputs to
HighâSpeed CMOS inputs. The HCT244A is an octal noninverting buffer
line driver line receiver designed to be used with 3âstate memory address
drivers, clock drivers, and other busâoriented systems. The device has
nonâinverted outputs and two activeâlow output enables.
The HCT244A is the noninverting version of the HCT240. See also
HCT241.
⢠Output Drive Capability: 15 LSTTL Loads
⢠TTL NMOSâCompatible 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
A1 2
A2 4
A3 6
A4 8
DATA INPUTS
B1 11
B2 13
B3 15
LOGIC DIAGRAM
18 YA1
16 YA2
14 YA3
12 YA4
9 YB1
NONINVERTING
OUTPUTS
7 YB2
5 YB3
MC54/74HCT244A
20
1
J SUFFIX
CERAMIC PACKAGE
CASE 732â03
20
1
20
1
N SUFFIX
PLASTIC PACKAGE
CASE 738â03
DW SUFFIX
SOIC PACKAGE
CASE 751Dâ04
20
1
SD SUFFIX
SSOP PACKAGE
CASE 940Câ03
20
1
DT SUFFIX
TSSOP PACKAGE
CASE 948Eâ02
ORDERING INFORMATION
MC54HCTXXXAJ
Ceramic
MC74HCTXXXAN
Plastic
MC74HCTXXXADW SOIC
MC74HCTXXXASD SSOP
MC74HCTXXXADT TSSOP
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
B4 17
OUTPUT ENABLE A 1
ENABLES ENABLE B 19
3 YB4
PIN 20 = VCC
PIN 10 = GND
FUNCTION TABLE
Inputs
Enable A,
Enable B A, B
Outputs
YA, YB
L
L
L
L
H
H
H
X
Z
Z = high impedance
X = donât care
2/97
© Motorola, Inc. 1997
1
REV 7
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