MC74AC245DW [ONSEMI]
OCTAL BIDIRECTIONAL TRANSCEIVER WITH 3-STATE INPUTS/OUTPUTS; 具有三态输入/输出八路双向收发器
| 型号： | MC74AC245DW |
| 厂家： | 
ONSEMI |
| 描述： | OCTAL BIDIRECTIONAL TRANSCEIVER WITH 3-STATE INPUTS/OUTPUTS |
| 文件： | 总12页 (文件大小：106K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MC74AC245, MC74ACT245
Octal Bidirectional
Transceiver with 3-State
Inputs/Outputs
The MC74AC245/74ACT245 contains eight non–inverting
bidirectional buffers with 3–state outputs and is intended for
bus–oriented applications. Current sinking capability is 24 mA at both
the A and B ports. The Transmit/Receive (T/R) input determines the
direction of data flow through the bidirectional transceiver. Transmit
(active–HIGH) enables data from A ports to B ports; Receive
(active–LOW) enables data from B ports to A ports. The Output
Enable input, when HIGH, disables both A and B ports by placing
them in a High Z condition.
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PDIP–20
N SUFFIX
CASE 738
20
1
SO–20
DW SUFFIX
CASE 751
20
• Noninverting Buffers
1
• Bidirectional Data Path
• A and B Outputs Source/Sink 24 mA
• ′ACT245 Has TTL Compatible Inputs
TSSOP–20
DT SUFFIX
CASE 948E
20
1
V
OE
19
B
B
B
B
B
B
B
B
7
CC
0
1
2
3
4
5
6
EIAJ–20
M SUFFIX
CASE 967
20
18
17
16
15
14
12
13
11
20
1
ORDERING INFORMATION
Device
Package
PDIP–20
PDIP–20
SOIC–20
Shipping
1
2
3
4
5
6
7
9
8
10
MC74AC245N
18 Units/Rail
18 Units/Rail
38 Units/Rail
T/R
A
0
A
1
A
2
A
3
A
4
A
5
A
6
A
7
GND
MC74ACT245N
MC74AC245DW
MC74AC245DWR2
MC74ACT245DW
Figure 1.
SOIC–20 1000 Tape & Reel
SOIC–20 38 Units/Rail
PIN ASSIGNMENT
PIN
OE
T/R
FUNCTION
MC74ACT245DWR2 SOIC–20 1000 Tape & Reel
Output Enable Input
Transmit/Receive Input
MC74AC245DT
MC74AC245DTR2
MC74ACT245DT
TSSOP–20
TSSOP–20 2500 Tape & Reel
TSSOP–20 75 Units/Rail
75 Units/Rail
A –A
0
Side A 3–State Inputs or 3–State Outputs
Side B 3–State Inputs or 3–State Outputs
7
B –B
0
7
MC74ACT245DTR2 TSSOP–20 2500 Tape & Reel
TRUTH TABLES
Inputs
MC74AC245M
EIAJ–20
EIAJ–20 2000 Tape & Reel
EIAJ–20 40 Units/Rail
EIAJ–20 2000 Tape & Reel
40 Units/Rail
Outputs
MC74AC245MEL
MC74ACT245M
MC74ACT245MEL
OE T/R
L
L
H
L
H
X
Bus B Data to Bus A
Bus A Data to Bus B
High Z State
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
DEVICE MARKING INFORMATION
See general marking information in the device marking
section on page 6 of this data sheet.
Semiconductor Components Industries, LLC, 2001
1
Publication Order Number:
May, 2001 – Rev. 5
MC74AC245/D
MC74AC245, MC74ACT245
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
mA
°C
IN
DC Output Sink/Source Current, per Pin
±50
±50
OUT
CC
DC V
or GND Current per Output Pin
Storage Temperature
CC
T
stg
–65 to +150
*Maximum Ratings are those values beyond which damage to the device may occur. Functional operation should be restricted to the
Recommended 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
MC74AC245, MC74ACT245
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
±0.6
±1.0
±6.0
µA
µA
V = V , GND
CC
I
I
V (OE) = V , V
IL IH
Maximum
3-State
Current
OZT
I
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
OHD
CC
OLD
OHD
–75
V
V
= 3.85 V Min
Maximum Quiescent
Supply Current
5.5
–
8.0
80.0
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.
NOTE:
I
IN
and I
@ 3.0 V are guaranteed to be less than or equal to the respective limit @ 5.5 V V
.
CC
CC
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3
MC74AC245, MC74ACT245
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
to B or B to A
3.3
5.0
1.5
1.5
5.0
3.5
8.5
6.5
1.0
1.0
9.0
7.0
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
A
n
n
n
n
Propagation Delay
to B or B to A
3.3
5.0
1.5
1.5
5.0
3.5
8.5
6.0
1.0
1.0
9.0
7.0
PHL
PZH
PZL
PHZ
PLZ
A
n
n
n
n
3.3
5.0
2.5
1.5
7.0
5.0
11.5
8.5
2.0
1.0
12.5
9.0
Output Enable Time
Output Enable Time
Output Disable Time
Output Disable Time
3.3
5.0
2.5
1.5
7.5
5.5
12.0
9.0
2.0
1.0
13.5
9.5
3.3
5.0
2.0
1.5
6.5
5.5
12.0
9.0
1.0
1.0
12.5
10.0
3.3
5.0
2.0
1.5
7.0
5.5
11.5
9.0
1.5
1.0
13.0
10.0
*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
V
V
–24 mA
–24 mA
I
OH
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 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
OZT
I
5.5
–
±0.6
±6.0
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
80.0
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
MC74AC245, MC74ACT245
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
to B or B to A
t
t
5.0
5.0
1.5
4.0
7.5
1.5
8.0
9.0
ns
ns
3–5
3–5
PLH
A
n
n
n
n
Propagation Delay
to B or B to A
1.5
4.0
8.0
1.0
PHL
A
n
n
n
n
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
1.5
1.5
2.0
5.0
5.5
5.5
5.0
10
10
10
10
1.5
1.5
1.0
1.5
11.0
12.0
11.0
11.0
ns
ns
ns
ns
3–7
3–8
3–7
3–8
PZH
PZL
PHZ
PLZ
*Voltage Range 5.0 V is 5.0 V ±0.5 V.
CAPACITANCE
Symbol
Value
Typ
Parameter
Unit
Test Conditions
C
C
C
Input Capacitance
4.5
15
45
pF
pF
pF
V
CC
V
CC
V
CC
= 5.0 V
= 5.0 V
= 5.0 V
IN
Input/Output Capacitance
I/O
PD
Power Dissipation Capacitance
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5
MC74AC245, MC74ACT245
MARKING DIAGRAMS
PDIP–20
SO–20
TSSOP–20
EIAJ–20
AC245
AWLYYWW
MC74AC245N
AWLYYWW
74AC245
AWLYWW
AC
245
ALYW
ACT245
AWLYYWW
MC74ACT245N
AWLYYWW
74ACT245
AWLYWW
ACT
245
ALYW
A
= Assembly Location
WL, L = Wafer Lot
YY, Y
= Year
WW, W = Work Week
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6
MC74AC245, MC74ACT245
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
1.070 25.66
MILLIMETERS
MIN
MAX
27.17
6.60
4.57
0.55
A
B
C
D
E
F
1.010
0.240
0.150
0.015
0.260
0.180
0.022
6.10
3.81
0.39
–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
B
0.25 (0.010)
T
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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7
MC74AC245, MC74ACT245
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.
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.
K
K1
20
11
2X L/2
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
DIM MIN MAX
INCHES
MIN
MAX
0.260
0.177
0.047
0.006
0.030
A
B
6.40
4.30
---
6.60 0.252
4.50 0.169
N
C
1.20
---
D
0.05
0.50
0.15 0.002
0.75 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
0.011
0.015
0.008
0.006
0.012
0.010
J
0.20 0.004
0.16 0.004
0.30 0.007
0.25 0.007
–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)
–T– SEATING
PLANE
EIAJ–20
M SUFFIX
20 PIN PLASTIC EIAJ PACKAGE
CASE 967–01
ISSUE O
NOTES:
ąă1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
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 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).
L
1
10
DETAIL P
Z
D
VIEW P
MILLIMETERS
INCHES
MIN
---
e
A
DIM MIN
MAX
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
2.05
A
0.20 0.002
0.50 0.014
0.27 0.007
1
b
c
D
E
e
12.80 0.486
5.45 0.201
A
b
1
1.27 BSC
0.050 BSC
M
0.10 (0.004)
0.13 (0.005)
H
7.40
0.50
1.10
8.20 0.291
0.85 0.020
1.50 0.043
0.323
0.033
0.059
E
L
L
E
M
0
10
0.90 0.028
10
_
0.035
0.032
0
_
_
_
Q
0.70
---
1
Z
0.81
---
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8
MC74AC245, MC74ACT245
Notes
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9
MC74AC245, MC74ACT245
Notes
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10
MC74AC245, MC74ACT245
Notes
http://onsemi.com
11
MC74AC245, MC74ACT245
ON Semiconductor and
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MC74AC245/D
相关型号：
MC74AC245DWCR2
Bus Transceiver, AC Series, 1-Func, 8-Bit, True Output, CMOS, PDSO20, PLASTIC, SOIC-20
MOTOROLA
MC74AC245ML2
IC IC,BUS TRANSCEIVER,SINGLE,8-BIT,AC-CMOS,SOP,20PIN,PLASTIC, Bus Driver/Transceiver
ONSEMI
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