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MC74AC244 데이터시트 PDF




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기능 Octal Buffer/Line Driver
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MC74AC244 데이터시트, 핀배열, 회로
MC74AC244, MC74ACT244
Octal Buffer/Line Driver
with 3-State Outputs
The MC74AC244/74ACT244 is an octal buffer and line driver
designed to be employed as a memory address driver, clock driver and
bus oriented transmitter/receiver which provides improved PC board
density.
Features
3−State Outputs Drive Bus Lines or Buffer Memory Address
Registers
Outputs Source/Sink 24 mA
ACT244 Has TTL Compatible Inputs
These are Pb−Free Devices
VCC OE2
20 19 18 17 16 15 14 13 12 11
www.onsemi.com
SOIC−20W
DW SUFFIX
CASE 751D
1
TSSOP−20
DT SUFFIX
CASE 948E
1
1 2 3 4 5 6 7 8 9 10
OE1 GND
Pinout: 20−Lead Packages Conductors (Top View)
TRUTH TABLE
Inputs
Outputs
OE1 D (Pins 12, 14, 16, 18)
LL
L
LH
H
HX
Z
NOTE:
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
Z = High Impedance
TRUTH TABLE
Inputs
Outputs
OE2 D
LL
LH
HX
(Pins 3, 5, 7, 9)
L
H
Z
NOTE:
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
Z = High Impedance
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 5 of this data sheet.
DEVICE MARKING INFORMATION
See general marking information in the device marking
section on page 5 of this data sheet.
© Semiconductor Components Industries, LLC, 2015
February, 2015 − Rev. 8
1
Publication Order Number:
MC74AC244/D




MC74AC244 pdf, 반도체, 판매, 대치품
MC74AC244, MC74ACT244
DC CHARACTERISTICS
Symbol
Parameter
VIH Minimum High Level Input Voltage
VIL Maximum Low Level Input Voltage
VOH Minimum High Level Output Voltage
VOL Maximum Low Level Output Voltage
IIN
DICCT
IOZ
Maximum Input Leakage Current
Additional Max. ICC/Input
Maximum 3−State Current
74ACT
74ACT
VCC
(V)
TA = +25°C
TA =
−40°C to +85°C
Typ Guaranteed Limits
4.5 1.5 2.0
5.5 1.5 2.0
2.0
2.0
4.5 1.5 0.8
5.5 1.5 0.8
0.8
0.8
4.5 4.49 4.4
5.5 5.49 5.4
4.4
5.4
4.5 − 3.86
5.5 − 4.86
4.5 0.001 0.1
5.5 0.001 0.1
3.76
4.76
0.1
0.1
4.5 − 0.36
5.5 − 0.36
5.5 − ±0.1
5.5 0.6 −
5.5 − ±0.5
0.44
0.44
±1.0
1.5
±5.0
IOLD
†Minimum Dynamic Output Current
5.5 −
IOHD
5.5 −
ICC Maximum Quiescent Supply Current 5.5 −
*All outputs loaded; thresholds on input associated with output under test.
†Maximum test duration 2.0 ms, one output loaded at a time.
8.0
75
−75
80
Unit Conditions
V VOUT = 0.1 V
or VCC − 0.1 V
V VOUT = 0.1 V
or VCC − 0.1 V
V IOUT = −50 mA
V *VIN = VIL or VIH
−24 mA
IOH −24 mA
V IOUT = 50 mA
V *VIN = VIL or VIH
24 mA
IOL 24 mA
mA VI = VCC, GND
mA VI = VCC − 2.1 V
mA VI (OE) = VIL, VIH
VI = VCC, GND
VO = VCC, GND
mA VOLD = 1.65 V Max
mA VOHD = 3.85 V Min
mA VIN = VCC or GND
AC CHARACTERISTICS (For Figures and Waveforms − See AND8277/D at www.onsemi.com)
74ACT
74ACT
Symbol
Parameter
VCC*
(V)
TA = +25°C
CL = 50 pF
TA = −40°C to +85°C
CL = 50 pF
Min Typ Max Min Max
tPLH Propagation Delay
Data to Output
5.0 2.0 6.5 9.0 1.5 10.0
tPHL Propagation Delay
Data to Output
5.0 2.0 7.0 9.0 1.5 10.0
tPZH
Output Enable Time
5.0 1.5
tPZL Output Enable Time
5.0 2.0
tPHZ
Output Disable Time
5.0 2.0
tPLZ Output Disable Time
5.0 2.5
*Voltage Range 5.0 V is 5.0 V ±0.5 V.
6.0 8.5 1.0 9.5
7.0 9.5 1.5 10.5
7.0 9.5 1.5 10.5
7.5 10.0 2.0 10.5
Unit
ns
ns
ns
ns
ns
ns
Figure
No.
3−5
3−5
3−7
3−8
3−7
3−8
CAPACITANCE
Symbol
Parameter
CIN Input Capacitance
CPD Power Dissipation Capacitance
Value Typ
4.5
45
Unit
pF
pF
Test Conditions
VCC = 5.0 V
VCC = 5.0 V
www.onsemi.com
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MC74AC244 전자부품, 판매, 대치품
MC74AC244, MC74ACT244
PACKAGE DIMENSIONS
SOIC−20W
DW SUFFIX
CASE 751D−05
ISSUE G
D
A
20 11
E
1 10
20X B
B
0.25 M T A S B S
18X e
A
SEATING
PLANE
A1 T
q
C
NOTES:
1. DIMENSIONS ARE IN MILLIMETERS.
2. INTERPRET DIMENSIONS AND TOLERANCES
PER ASME Y14.5M, 1994.
3. DIMENSIONS D AND E DO NOT INCLUDE MOLD
PROTRUSION.
4. MAXIMUM MOLD PROTRUSION 0.15 PER SIDE.
5. DIMENSION B DOES NOT INCLUDE DAMBAR
PROTRUSION. ALLOWABLE PROTRUSION
SHALL BE 0.13 TOTAL IN EXCESS OF B
DIMENSION AT MAXIMUM MATERIAL
CONDITION.
MILLIMETERS
DIM MIN MAX
A 2.35 2.65
A1 0.10 0.25
B 0.35 0.49
C 0.23 0.32
D 12.65 12.95
E 7.40 7.60
e 1.27 BSC
H 10.05 10.55
h 0.25 0.75
L 0.50 0.90
q 0_ 7_
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SCILLC owns the rights to a number of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of SCILLC’s product/patent coverage may be accessed
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or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and
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PUBLICATION ORDERING INFORMATION
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For additional information, please contact your local
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www.onsemi.com
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MC74AC244/D

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