MC74HC244A ON Semiconductor, MC74HC244A Datasheet

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MC74HC244A

Manufacturer Part Number
MC74HC244A
Description
Octal 3-State Noninverting Buffer/Line Driver/Line Receiver
Manufacturer
ON Semiconductor
Datasheet

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MC74HC244A
Octal 3-State Noninverting
Buffer/Line Driver/
Line Receiver
High–Performance Silicon–Gate CMOS
inputs are compatible with standard CMOS outputs; with pullup
resistors, they are compatible with LSTTL outputs.
to be used with 3–state memory address drivers, clock drivers, and
other bus–oriented systems. The device has noninverting outputs and
two active–low output enables.
INPUTS
March, 2000 – Rev. 8
ENABLES
OUTPUT
The MC74HC244A is identical in pinout to the LS244. The device
This octal noninverting buffer/line driver/line receiver is designed
The HC244A is similar in function to the HC240A.
No. 7A
DATA
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 A
High Noise Immunity Characteristic of CMOS Devices
In Compliance with the Requirements Defined by JEDEC Standard
Chip Complexity: 136 FETs or 34 Equivalent Gates
Semiconductor Components Industries, LLC, 2000
A1
A2
A3
A4
B1
B2
B3
B4
ENABLE A
ENABLE B
2
4
6
8
11
13
15
17
1
19
Z = high impedance
Enable A,
Enable B
LOGIC DIAGRAM
FUNCTION TABLE
H
L
L
Inputs
A, B
H
X
L
Outputs
YA, YB
H
L
Z
PIN 20 = V CC
PIN 10 = GND
18
16
14
12
9
7
5
3
YA1
YA2
YA3
YA4
YB1
YB2
YB3
YB4
NONINVERTING
OUTPUTS
1
20
MC74HC244AN
MC74HC244ADW
MC74HC244ADWR2
MC74HC244ADT
MC74HC244ADTR2
20
20
1
1
Device
1
ENABLE A
ORDERING INFORMATION
A
WL = Wafer Lot
YY = Year
WW = Work Week
GND
YB3
YB4
YB2
YB1
SOIC WIDE–20
PIN ASSIGNMENT
http://onsemi.com
A1
A2
A3
A4
DW SUFFIX
CASE 751D
= Assembly Location
CASE 948G
DT SUFFIX
TSSOP–20
CASE 738
N SUFFIX
1
2
3
4
5
6
7
8
9
10
PDIP–20
SOIC–WIDE
SOIC–WIDE
TSSOP–20
TSSOP–20
Publication Order Number:
Package
PDIP–20
20
19
18
17
16
15
14
13
12
11
20
20
1
1
MC74HC244A/D
MC74HC244AN
DIAGRAMS
V CC
ENABLE B
YA1
B4
YA2
B3
YA3
B2
YA4
B1
MARKING
AWLYYWW
AWLYYWW
20
1
HC244A
1000 / Reel
2500 / Reel
1440 / Box
Shipping
38 / Rail
75 / Rail
ALYW
244A
HC

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MC74HC244A Summary of contents

Page 1

... Octal 3-State Noninverting Buffer/Line Driver/ Line Receiver High–Performance Silicon–Gate 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 3– ...

Page 2

... MC74HC244A Î Î Î Î Î Î Î Î Value Unit Î ...

Page 3

... Power Dissipation Capacitance (Per Buffer)* * Used to determine the no–load dynamic power consumption For load considerations, see Chapter 2 of the ON Semiconductor High–Speed CMOS Data Book (DL129/D). MC74HC244A (Voltages Referenced to GND) Î Î Î Î Î Î Î Î Î ...

Page 4

... Data input pins. Data on these pins appear in noninverted form on the corresponding Y outputs, when the outputs are enabled. CONTROLS Enable A, Enable B (Pins 1, 19) Output enables (active–low). When a low level is applied to these pins, the outputs are enabled and the devices MC74HC244A SWITCHING WAVEFORMS V CC ENABLE 50 GND ...

Page 5

... MC74HC244A TO THREE OTHER INVERTERS DATA INPUT ENABLE A OR ENABLE B http://onsemi.com LOGIC DETAIL ONE OF 8 INVERTERS ...

Page 6

... SEATING PLANE 0.25 (0.010 20X T 0. 18X MC74HC244A PACKAGE DIMENSIONS PDIP–20 N SUFFIX PLASTIC DIP PACKAGE CASE 738–03 ISSUE 0.25 (0.010 SO–20 DW SUFFIX CASE 751D–05 ...

Page 7

... L PIN 1 IDENT 1 0.15 (0.006 –V– 0.100 (0.004) –T– SEATING PLANE MC74HC244A PACKAGE DIMENSIONS TSSOP–20 DT SUFFIX CASE 948E–02 ISSUE Í Í Í Í Í Í Í Í B Í Í Í Í ...

Page 8

... Email: ONlit–asia@hibbertco.com JAPAN: ON Semiconductor, Japan Customer Focus Center 4–32–1 Nishi–Gotanda, Shinagawa–ku, Tokyo, Japan 141–8549 Phone: 81–3–5740–2745 Email: r14525@onsemi.com ON Semiconductor Website: http://onsemi.com For additional information, please contact your local Sales Representative. http://onsemi.com 8 MC74HC244A/D ...

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