AC244 [ONSEMI]
Octal Buffer/Line Driver with 3-State Outputs; 八路缓冲器/ 3态输出线路驱动器
| 型号： | AC244 |
| 厂家： | 
ONSEMI |
| 描述： | Octal Buffer/Line Driver with 3-State Outputs |
| 文件： | 总8页 (文件大小：88K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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.
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PDIP–20
N SUFFIX
CASE 738
• 3–State Outputs Drive Bus Lines or Buffer Memory Address
Registers
• Outputs Source/Sink 24 mA
20
• ′ACT244 Has TTL Compatible Inputs
1
SO–20
DW SUFFIX
CASE 751
V
OE
2
CC
20
20
19
18
17
16
15
14
12
13
11
1
TSSOP–20
DT SUFFIX
CASE 948E
20
1
EIAJ–20
M SUFFIX
CASE 967
1
2
3
4
5
6
7
8
9
10
20
OE
GND
1
1
Figure 1. Pinout: 20–Lead Packages Conductors
(Top View)
ORDERING INFORMATION
Device
Package
PDIP–20
PDIP–20
SOIC–20
Shipping
18 Units/Rail
18 Units/Rail
38 Units/Rail
TRUTH TABLE
Inputs
OE
Outputs
MC74AC244N
D
(Pins 12, 14, 16, 18)
1
MC74ACT244N
MC74AC244DW
MC74AC244DWR2
MC74ACT244DW
MC74ACT244DWR2
MC74AC244DT
MC74AC244DTR2
MC74ACT244DT
L
L
H
L
H
X
L
H
Z
SOIC–20 1000 Tape & Reel
SOIC–20 38 Units/Rail
SOIC–20 1000 Tape & Reel
TSSOP–20 75 Units/Rail
TSSOP–20 2500 Tape & Reel
TSSOP–20 75 Units/Rail
NOTE: H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
Z = High Impedance
TRUTH TABLE
Inputs
OE
Outputs
D
(Pins 3, 5, 7, 9)
2
MC74ACT244DTR2 TSSOP–20 2500 Tape & Reel
L
L
H
L
H
X
L
H
Z
MC74AC244M
EIAJ–20
EIAJ–20 2000 Tape & Reel
EIAJ–20 40 Units/Rail
EIAJ–20 2000 Tape & Reel
40 Units/Rail
MC74AC244MEL
MC74ACT244M
MC74ACT244MEL
NOTE: H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
Z = High Impedance
DEVICE MARKING INFORMATION
See general marking information in the device marking
section on page 5 of this data sheet.
Semiconductor Components Industries, LLC, 2001
1
Publication Order Number:
May, 2001 – Rev. 5
MC74AC244/D
MC74AC244, MC74ACT244
MAXIMUM RATINGS*
Symbol
Parameter
Value
Unit
V
V
V
V
DC Supply Voltage (Referenced to GND)
–0.5 to +7.0
CC
DC Input Voltage (Referenced to GND)
DC Output Voltage (Referenced to GND)
DC Input Current, per Pin
–0.5 to V
+0.5
V
IN
CC
–0.5 to V
+0.5
V
OUT
CC
I
I
I
±20
mA
mA
IN
DC Output Sink/Source Current, per Pin
±50
±50
OUT
CC
DC V
or GND Current per Output Pin
Storage Temperature
mA
CC
T
stg
–65 to +150
°C
*MaximumRatings are those values beyond which damage to the device may occur. Functional operation should be restricted to the Recom-
mended Operating Conditions.
RECOMMENDED OPERATING CONDITIONS
Symbol
Parameter
Min
2.0
4.5
0
Typ
5.0
5.0
–
Max
6.0
Unit
′AC
V
V
Supply Voltage
V
V
CC
′ACT
5.5
, V
IN OUT
DC Input Voltage, Output Voltage (Ref. to GND)
V
CC
V
CC
V
CC
V
CC
V
CC
V
CC
@ 3.0 V
@ 4.5 V
@ 5.5 V
@ 4.5 V
@ 5.5 V
–
150
40
25
10
8.0
–
–
Input Rise and Fall Time (Note 1)
′AC Devices except Schmitt Inputs
–
–
–
–
–
ns/V
t , t
r f
–
–
Input Rise and Fall Time (Note 2)
′ACT Devices except Schmitt Inputs
t , t
r f
ns/V
–
T
J
Junction Temperature (PDIP)
Operating Ambient Temperature Range
Output Current – High
–
140
85
°C
°C
T
A
–40
–
25
–
I
I
–24
24
mA
mA
OH
Output Current – Low
–
–
OL
1. V from 30% to 70% V ; see individual Data Sheets for devices that differ from the typical input rise and fall times.
IN
CC
2. V from 0.8 V to 2.0 V; see individual Data Sheets for devices that differ from the typical input rise and fall times.
IN
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2
MC74AC244, MC74ACT244
DC CHARACTERISTICS
Symbol
74AC
74AC
T
A
=
V
(V)
CC
T
= +25°C
–40°C to
+85°C
Parameter
Unit
Conditions
A
Typ
Guaranteed Limits
V
V
V
3.0
4.5
5.5
1.5
2.25
2.75
2.1
3.15
3.85
2.1
3.15
3.85
V
= 0.1 V
– 0.1 V
Minimum High Level
Input Voltage
IH
OUT
V
V
V
or V
CC
= 0.1 V
OUT
3.0
4.5
5.5
1.5
2.25
2.75
0.9
1.35
1.65
0.9
1.35
1.65
V
Maximum Low Level
Input Voltage
IL
or V
– 0.1 V
CC
3.0
4.5
5.5
2.99
4.49
5.49
2.9
4.4
5.4
2.9
4.4
5.4
I
= –50 µA
Minimum High Level
Output Voltage
OH
OUT
*V = V or V
IN IL IH
3.0
4.5
5.5
–
–
–
2.56
3.86
4.86
2.46
3.76
4.76
–12 mA
–24 mA
–24 mA
V
V
V
I
OH
V
OL
3.0
4.5
5.5
0.002
0.001
0.001
0.1
0.1
0.1
0.1
0.1
0.1
I = 50 µA
OUT
Maximum Low Level
Output Voltage
*V = V or V
IN IL
IH
3.0
4.5
5.5
–
–
–
0.36
0.36
0.36
0.44
0.44
0.44
12 mA
I
24 mA
24 mA
OL
I
IN
Maximum Input
Leakage Current
5.5
5.5
–
–
±0.1
±0.5
±1.0
±5.0
µA
µA
V = V , GND
CC
I
I
V (OE) = V , V
IL IH
Maximum
3–State
Current
OZ
I
V = V , GND
I
CC
= V , GND
CC
V
V
V
O
I
I
I
5.5
5.5
–
–
–
–
75
mA
mA
= 1.65 V Max
†Minimum Dynamic
Output Current
OLD
OHD
CC
OLD
OHD
–75
= 3.85 V Min
Maximum Quiescent
Supply Current
5.5
–
8.0
80
µA
V
IN
= V or GND
CC
*All outputs loaded; thresholds on input associated with output under test.
†Maximum test duration 2.0 ms, one output loaded at a time.
NOTE:
I
IN
and I
CC
@ 3.0 V are guaranteed to be less than or equal to the respective limit @ 5.5 V V
.
CC
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3
MC74AC244, MC74ACT244
AC CHARACTERISTICS (For Figures and Waveforms – See Section 3)
74AC
74AC
T
= –40°C
A
T
C
= +25°C
= 50 pF
V
(V)
*
Fig.
No.
A
L
CC
to +85°C
C
Symbol
Parameter
Unit
= 50 pF
L
Min
Typ
Max
Min
Max
Propagation Delay
Data to Output
3.3
5.0
2.0
1.5
6.5
5.0
9.0
7.0
1.5
1.0
10.0
7.5
t
t
t
t
t
t
ns
ns
ns
ns
ns
ns
3–5
3–5
3–7
3–8
3–7
3–8
PLH
Propagation Delay
Data to Output
3.3
5.0
2.0
1.5
6.5
5.0
9.0
7.0
2.0
1.0
10.0
7.5
PHL
PZH
PZL
PHZ
PLZ
3.3
5.0
2.0
1.5
6.0
5.0
10.5
7.0
1.5
1.5
11.0
8.0
Output Enable Time
Output Enable Time
Output Disable Time
Output Disable Time
3.3
5.0
2.5
1.5
7.5
5.5
10.0
8.0
2.0
1.5
11.0
8.5
3.3
5.0
3.0
2.5
7.0
6.5
10.0
9.0
1.5
1.0
10.5
9.5
3.3
5.0
2.5
2.0
7.5
6.5
10.5
9.0
2.5
2.0
11.5
9.5
*Voltage Range 3.3 V is 3.3 V ±0.3 V.
*Voltage Range 5.0 V is 5.0 V ±0.5 V.
DC CHARACTERISTICS
74ACT
74ACT
T
=
A
V
(V)
CC
T
A
= +25°C
–40°C to
+85°C
Symbol
Parameter
Unit
Conditions
Typ
Guaranteed Limits
V
V
V
4.5
5.5
1.5
1.5
2.0
2.0
2.0
2.0
V
or V
= 0.1 V
Minimum High Level
Input Voltage
IH
OUT
V
V
V
– 0.1 V
CC
4.5
5.5
1.5
1.5
0.8
0.8
0.8
0.8
V
OUT
= 0.1 V
Maximum Low Level
Input Voltage
IL
or V
– 0.1 V
CC
4.5
5.5
4.49
5.49
4.4
5.4
4.4
5.4
I
= –50 µA
Minimum High Level
Output Voltage
OH
OUT
*V = V or V
IN IL IH
4.5
5.5
–
–
3.86
4.86
3.76
4.76
V
–24 mA
I
OH
–24 mA
V
OL
4.5
5.5
0.001
0.001
0.1
0.1
0.1
0.1
I
= 50 µA
OUT
Maximum Low Level
Output Voltage
V
V
*V = V or V
IN IL
IH
4.5
5.5
–
–
0.36
0.36
0.44
0.44
24 mA
24 mA
I
OL
I
IN
Maximum Input
Leakage Current
5.5
5.5
–
±0.1
±1.0
µA
V = V , GND
I
CC
∆I
CCT
Additional Max. I /Input
CC
0.6
–
1.5
mA
V = V
– 2.1 V
I
CC
I
V (OE) = V , V
IL IH
Maximum
3–State
Current
OZ
I
5.5
–
±0.5
±5.0
µA
V = V , GND
I
CC
= V , GND
CC
V
O
I
I
I
5.5
5.5
–
–
–
–
75
mA
mA
V
= 1.65 V Max
†Minimum Dynamic
Output Current
OLD
OLD
OHD
–75
V
V
= 3.85 V Min
OHD
CC
Maximum Quiescent
Supply Current
5.5
–
8.0
80
µA
= V or GND
CC
IN
*All outputs loaded; thresholds on input associated with output under test.
†Maximum test duration 2.0 ms, one output loaded at a time.
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4
MC74AC244, MC74ACT244
AC CHARACTERISTICS (For Figures and Waveforms – See Section 3)
74ACT
74ACT
= –40°C
T
A
T
C
= +25°C
= 50 pF
V
(V)
*
Fig.
No.
A
CC
to +85°C
Symbol
Parameter
Unit
L
C
= 50 pF
L
Min
Typ
Max
Min
Max
Propagation Delay
Data to Output
t
t
5.0
5.0
2.0
6.5
9.0
1.5
10.0
10.0
ns
ns
3–5
3–5
PLH
Propagation Delay
Data to Output
2.0
7.0
9.0
1.5
PHL
t
t
t
t
Output Enable Time
Output Enable Time
Output Disable Time
Output Disable Time
5.0
5.0
5.0
5.0
1.5
2.0
2.0
2.5
6.0
7.0
7.0
7.5
8.5
9.5
1.0
1.5
1.5
2.0
9.5
ns
ns
ns
ns
3–7
3–8
3–7
3–8
PZH
PZL
PHZ
PLZ
10.5
10.5
10.5
9.5
10.0
*Voltage Range 5.0 V is 5.0 V ±0.5 V.
CAPACITANCE
Symbol
Value
Typ
Parameter
Unit
Test Conditions
C
C
Input Capacitance
4.5
45
pF
pF
V
V
= 5.0 V
= 5.0 V
IN
CC
Power Dissipation Capacitance
PD
CC
MARKING DIAGRAMS
PDIP–20
SO–20
TSSOP–20
EIAJ–20
AC244
AWLYYWW
MC74AC244N
AWLYYWW
74AC244
AWLYWW
AC
244
ALYW
ACT244
AWLYYWW
MC74ACT244N
AWLYYWW
74ACT244
AWLYWW
ACT
244
ALYW
A
= Assembly Location
WL, L = Wafer Lot
YY, Y
= Year
WW, W = Work Week
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5
MC74AC244, MC74ACT244
PACKAGE DIMENSIONS
PDIP–20
N SUFFIX
20 PIN PLASTIC DIP PACKAGE
CASE 738–03
ISSUE E
–A–
NOTES:
1. DIMENSIONING AND TOLERANCING PER
ANSI Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
3. DIMENSION L TO CENTER OF LEAD WHEN
FORMED PARALLEL.
20
1
11
10
B
4. DIMENSION B DOES NOT INCLUDE MOLD
FLASH.
L
C
INCHES
DIM MIN MAX
MILLIMETERS
MIN
25.66
6.10
3.81
0.39
MAX
27.17
6.60
4.57
0.55
A
B
C
D
E
F
1.010
0.240
0.150
0.015
1.070
0.260
0.180
0.022
–T–
SEATING
PLANE
K
0.050 BSC
1.27 BSC
M
0.050
0.070
1.27
1.77
N
E
G
J
0.100 BSC
2.54 BSC
0.008
0.110
0.015
0.140
0.21
2.80
0.38
3.55
G
F
K
L
J 20 PL
0.300 BSC
7.62 BSC
D 20 PL
M
M
T B
0.25 (0.010)
M
N
0
0.020
15
_
0.040
0
_
0.51
15
_
1.01
_
M
M
0.25 (0.010)
T
A
SO–20
DW SUFFIX
20 PIN PLASTIC SOIC PACKAGE
CASE 751D–05
ISSUE F
D
A
q
NOTES:
1. DIMENSIONS ARE IN MILLIMETERS.
2. INTERPRET DIMENSIONS AND TOLERANCES
PER ASME Y14.5M, 1994.
20
11
3. DIMENSIONS D AND E DO NOT INCLUDE MOLD
PROTRUSION.
E
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.
1
10
MILLIMETERS
DIM MIN
MAX
2.65
0.25
0.49
0.32
12.95
7.60
B
A
A1
B
C
D
E
2.35
0.10
0.35
0.23
12.65
7.40
20X B
M
S
S
B
T
0.25
A
e
1.27 BSC
A
H
h
10.05
0.25
0.50
0
10.55
0.75
0.90
7
L
SEATING
PLANE
q
_
_
18X e
A1
C
T
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6
MC74AC244, MC74ACT244
PACKAGE DIMENSIONS
TSSOP–20
DT SUFFIX
20 PIN PLASTIC TSSOP PACKAGE
CASE 948E–02
ISSUE A
20X K REF
NOTES:
ąă1. DIMENSIONING AND TOLERANCING PER
ANSI Y14.5M, 1982.
M
S
S
V
0.10 (0.004)
T
U
S
U
0.15 (0.006) T
ąă2. CONTROLLING DIMENSION: MILLIMETER.
ąă3. DIMENSION A DOES NOT INCLUDE MOLD
FLASH, PROTRUSIONS OR GATE BURRS. MOLD
FLASH OR GATE BURRS SHALL NOT EXCEED
0.15 (0.006) PER SIDE.
K
K1
20
11
2X
L/2
ąă4. DIMENSION B DOES NOT INCLUDE
INTERLEAD FLASH OR PROTRUSION.
INTERLEAD FLASH OR PROTRUSION SHALL
NOT EXCEED 0.25 (0.010) PER SIDE.
ąă5. DIMENSION K DOES NOT INCLUDE DAMBAR
PROTRUSION. ALLOWABLE DAMBAR
PROTRUSION SHALL BE 0.08 (0.003) TOTAL IN
EXCESS OF THE K DIMENSION AT MAXIMUM
MATERIAL CONDITION.
J J1
B
L
–U–
PIN 1
IDENT
SECTION N–N
1
10
0.25 (0.010)
ąă6. TERMINAL NUMBERS ARE SHOWN FOR
REFERENCE ONLY.
N
S
ąă7. DIMENSION A AND B ARE TO BE
DETERMINED AT DATUM PLANE -W-.
0.15 (0.006) T
U
M
A
–V–
MILLIMETERS
INCHES
MIN
DIM MIN
MAX
6.60
4.50
1.20
0.15
0.75
MAX
0.260
0.177
0.047
0.006
0.030
A
B
6.40
4.30
---
0.252
0.169
---
N
C
D
0.05
0.50
0.002
0.020
F
F
G
H
0.65 BSC
0.026 BSC
DETAIL E
0.27
0.09
0.09
0.19
0.19
0.37
0.20
0.16
0.30
0.25
0.011
0.004
0.004
0.007
0.007
0.015
0.008
0.006
0.012
0.010
J
–W–
J1
K
C
K1
L
6.40 BSC
0.252 BSC
0
G
D
M
0
8
8
_
_
_
_
H
DETAIL E
0.100 (0.004)
SEATING
PLANE
–T–
EIAJ–20
M SUFFIX
20 PIN PLASTIC EIAJ PACKAGE
CASE 967–01
NOTES:
ąă1. DIMENSIONING AND TOLERANCING PER
ANSI Y14.5M, 1982.
ISSUE O
ąă2. CONTROLLING DIMENSION: MILLIMETER.
ąă3. DIMENSIONS D AND E DO NOT INCLUDE
MOLD FLASH OR PROTRUSIONS AND ARE
MEASURED AT THE PARTING LINE. MOLD
FLASH OR PROTRUSIONS SHALL NOT EXCEED
0.15 (0.006) PER SIDE.
L
E
20
11
Q
1
ąă4. TERMINAL NUMBERS ARE SHOWN FOR
REFERENCE ONLY.
H
E
E
_
M
ąă5. THE LEAD WIDTH DIMENSION (b) DOES NOT
INCLUDE DAMBAR PROTRUSION. ALLOWABLE
DAMBAR PROTRUSION SHALL BE 0.08 (0.003)
TOTAL IN EXCESS OF THE LEAD WIDTH
DIMENSION AT MAXIMUM MATERIAL
L
1
10
CONDITION. DAMBAR CANNOT BE LOCATED ON
THE LOWER RADIUS OR THE FOOT. MINIMUM
SPACE BETWEEN PROTRUSIONS AND
ADJACENT LEAD TO BE 0.46 ( 0.018).
DETAIL P
Z
D
VIEW P
MILLIMETERS
INCHES
MIN
e
A
DIM MIN
MAX
2.05
0.20
0.50
0.27
12.80
5.45
MAX
0.081
0.008
0.020
0.011
0.504
0.215
c
A
---
0.05
0.35
0.18
12.35
5.10
---
0.002
0.014
0.007
0.486
0.201
A
1
b
c
D
E
e
A
1
b
1.27 BSC
0.050 BSC
M
0.10 (0.004)
0.13 (0.005)
H
7.40
0.50
1.10
8.20
0.85
1.50
0.291
0.020
0.043
0.323
0.033
0.059
E
L
L
E
M
0
10
0
10
_
0.035
0.032
_
_
_
Q
0.70
---
0.90
0.81
0.028
---
1
Z
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7
MC74AC244, MC74ACT244
ON Semiconductor and
are trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes
without further notice to any products herein. SCILLC makes no warranty, representation 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 specifically disclaims any and all liability,
including without limitation special, consequential or incidental damages. “Typical” parameters which may be provided in SCILLC data sheets and/or
specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals” must be
validated for each customer application by customer’s technical experts. SCILLC does not convey any license under its patent rights nor the rights of others.
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intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death
may occur. Should Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC
and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees
arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that
SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal Opportunity/Affirmative Action Employer.
PUBLICATION ORDERING INFORMATION
Literature Fulfillment:
JAPAN: ON Semiconductor, Japan Customer Focus Center
4–32–1 Nishi–Gotanda, Shinagawa–ku, Tokyo, Japan 141–0031
Phone: 81–3–5740–2700
Literature Distribution Center for ON Semiconductor
P.O. Box 5163, Denver, Colorado 80217 USA
Phone: 303–675–2175 or 800–344–3860 Toll Free USA/Canada
Fax: 303–675–2176 or 800–344–3867 Toll Free USA/Canada
Email: ONlit@hibbertco.com
Email: r14525@onsemi.com
ON Semiconductor Website: http://onsemi.com
For additional information, please contact your local
Sales Representative.
N. American Technical Support: 800–282–9855 Toll Free USA/Canada
MC74AC244/D
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