MC74AC540, MC74ACT540,
MC74AC541, MC74ACT541
Octal Buffer/Line Driver
with 3-State Outputs
The MC74AC540/74ACT540 and MC74AC541/74ACT541 are
octal buffer/line drivers designed to be employed as memory and
address drivers, clock drivers and bus oriented transmitter/receivers.
The MC74AC541/74ACT541 is a noninverting option of the
MC74AC540/74ACT540.
These devices are similar in function to the
MC74AC240/74ACT240 and MC74AC244/74ACT244 while
providing flow−through architecture (inputs on opposite side from
outputs). This pinout arrangement makes these devices especially
useful as output ports for microprocessors, allowing ease of layout and
greater PC board density.
Features
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SOIC−20W
DW SUFFIX
CASE 751D
1
•
3−State Outputs
•
Inputs and Outputs Opposite Side of Package, Allowing Easier
•
•
•
•
•
Interface to Microprocessors
Outputs Source/Sink 24 mA
MC74AC540/74ACT540 Provides Inverted Outputs
MC74AC541/74ACT541 Provides Noninverted Outputs
′ACT540
and
′ACT541
Have TTL Compatible Inputs
These are Pb−Free Devices
TSSOP−20
DT SUFFIX
CASE 948E
1
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 8 of this data sheet.
DEVICE MARKING INFORMATION
See general marking information in the device marking
section on page 8 of this data sheet.
TRUTH TABLE
Inputs
OE
1
L
H
X
L
OE
2
L
X
H
L
D
H
X
X
L
Outputs
′540
L
Z
Z
H
′541
H
Z
Z
L
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
Z = High Impedance
©
Semiconductor Components Industries, LLC, 2015
1
March, 2015 − Rev. 9
Publication Order Number:
MC74AC540/D
MC74AC540, MC74ACT540, MC74AC541, MC74ACT541
OE
1
V
CC
OE
2
OE
1
V
CC
OE
2
1
2
3
4
5
6
7
8
9
20
19
18
17
16
15
14
13
12
11
1
2
3
4
5
6
7
8
9
20
19
18
17
16
15
14
13
12
11
GND
10
GND
10
Figure 1. MC74AC540/74ACT540
Figure 2. MC74AC541/74ACT541
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2
MC74AC540, MC74ACT540, MC74AC541, MC74ACT541
MAXIMUM RATINGS
Symbol
V
CC
V
IN
V
OUT
I
IK
I
OK
I
OUT
I
CC
I
GND
T
STG
T
L
T
J
q
JA
MSL
F
R
V
ESD
Parameter
DC Supply Voltage (Referenced to GND)
DC Input Voltage (Referenced to GND)
DC Output Voltage (Referenced to GND) (Note 1)
DC Input Diode Current
DC Output Diode Current
DC Output Sink/Source Current
DC Supply Current, per Output Pin
DC Ground Current, per Output Pin
Storage Temperature Range
Lead temperature, 1 mm from Case for 10 Seconds
Junction Temperature Under Bias
Thermal Resistance (Note 2)
Moisture Sensitivity
Flammability Rating
ESD Withstand Voltage
Oxygen Index: 30% − 35%
Human Body Model (Note 3)
Machine Model (Note 4)
Charged Device Model (Note 5)
Above V
CC
and Below GND at 85_C (Note 6)
SOIC
TSSOP
Value
−0.5 to +7.0
−0.5 to V
CC
+0.5
−0.5 to V
CC
+0.5
±20
±50
±50
±50
±100
*65
to
)150
260
140
65.8
110.7
Level 1
UL 94 V−0 @ 0.125 in
> 2000
> 200
> 1000
±100
V
Unit
V
V
V
mA
mA
mA
mA
mA
_C
_C
_C
_C/W
I
Latchup
Latchup Performance
mA
Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality
should not be assumed, damage may occur and reliability may be affected.
1. I
OUT
absolute maximum rating must be observed.
2. The package thermal impedance is calculated in accordance with JESD 51−7.
3. Tested to EIA/JESD22−A114−A.
4. Tested to EIA/JESD22−A115−A.
5. Tested to JESD22−C101−A.
6. Tested to EIA/JESD78.
RECOMMENDED OPERATING CONDITIONS
Symbol
V
CC
V
IN
, V
OUT
Supply Voltage
DC Input Voltage, Output Voltage (Ref. to GND)
V
CC
@ 3.0 V
t
r
, t
f
Input Rise and Fall Time (Note 1)
′AC
Devices except Schmitt Inputs
Input Rise and Fall Time (Note 2)
′ACT
Devices except Schmitt Inputs
Operating Ambient Temperature Range
Output Current − High
Output Current − Low
V
CC
@ 4.5 V
V
CC
@ 5.5 V
t
r
, t
f
T
A
I
OH
I
OL
V
CC
@ 4.5 V
V
CC
@ 5.5 V
Parameter
′AC
′ACT
Min
2.0
4.5
0
−
−
−
−
−
−40
−
−
Typ
5.0
5.0
−
150
40
25
10
8.0
25
−
−
Max
6.0
5.5
V
CC
−
−
−
−
−
85
−24
24
ns/V
°C
mA
mA
ns/V
V
V
Unit
Functional operation above the stresses listed in the Recommended Operating Ranges is not implied. Extended exposure to stresses beyond
the Recommended Operating Ranges limits may affect device reliability.
1. V
IN
from 30% to 70% V
CC
; see individual Data Sheets for devices that differ from the typical input rise and fall times.
2. V
IN
from 0.8 V to 2.0 V; see individual Data Sheets for devices that differ from the typical input rise and fall times.
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3
MC74AC540, MC74ACT540, MC74AC541, MC74ACT541
DC CHARACTERISTICS
74AC
V
CC
(V)
3.0
4.5
5.5
3.0
4.5
5.5
3.0
4.5
5.5
3.0
4.5
5.5
V
OL
Maximum Low Level
Output Voltage
3.0
4.5
5.5
3.0
4.5
5.5
I
IN
I
OZ
Maximum Input
Leakage Current
Maximum
3-State
Current
†Minimum Dynamic
Output Current
Maximum Quiescent
Supply Current
5.5
T
A
= +25°C
Typ
1.5
2.25
2.75
1.5
2.25
2.75
2.99
4.49
5.49
−
−
−
0.002
0.001
0.001
−
−
−
−
74AC
T
A
= −40°C to +85°C
Guaranteed Limits
2.1
3.15
3.85
0.9
1.35
1.65
2.9
4.4
5.4
2.56
3.86
4.86
0.1
0.1
0.1
0.36
0.36
0.36
±0.1
2.1
3.15
3.85
0.9
1.35
1.65
2.9
4.4
5.4
2.46
3.76
4.76
0.1
0.1
0.1
0.44
0.44
0.44
±1.0
Unit
V
Conditions
V
OUT
= 0.1 V
or V
CC
− 0.1 V
V
OUT
= 0.1 V
or V
CC
− 0.1 V
I
OUT
= −50
mA
V
*V
IN
= V
IL
or V
IH
−12 mA
I
OH
−24 mA
−24 mA
I
OUT
= 50
mA
V
*V
IN
= V
IL
or V
IH
12 mA
I
OL
24 mA
24 mA
V
I
= V
CC
, GND
V
I
(OE) = V
IL
, V
IH
V
I
= V
CC
, GND
V
O
= V
CC
, GND
V
OLD
= 1.65 V Max
V
OHD
= 3.85 V Min
V
IN
= V
CC
or GND
Symbol
V
IH
Parameter
Minimum High Level
Input Voltage
Maximum Low Level
Input Voltage
Minimum High Level
Output Voltage
V
IL
V
V
OH
V
V
mA
5.5
−
±0.5
−
−
8.0
±5.0
75
−75
80
mA
mA
mA
mA
I
OLD
I
OHD
I
CC
5.5
5.5
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.
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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4
MC74AC540, MC74ACT540, MC74AC541, MC74ACT541
AC CHARACTERISTICS
(For Figures and Waveforms − See AND8277/D at www.onsemi.com)
74AC
T
A
= +25°C
C
L
= 50 pF
Min
1.5
1.5
1.5
1.5
3.0
2.0
2.5
2.0
2.5
1.5
2.0
1.5
2.0
1.5
2.0
1.5
3.0
2.0
2.5
1.5
3.5
2.0
2.5
2.0
Typ
5.5
4.0
5.0
4.0
8.5
6.5
7.5
6.0
8.5
7.5
7.0
6.0
5.5
4.0
5.5
4.0
8.0
6.0
7.0
5.5
9.0
7.0
6.5
5.5
Max
7.5
6.0
7.0
5.5
11
8.5
10
7.5
13
10.5
10
8.0
8.0
6.0
8.0
6.0
11.5
8.5
10
7.5
12.5
9.5
9.5
7.5
74AC
T
A
= −40°C to +85°C
C
L
= 50 pF
Min
1.0
1.0
1.0
1.0
2.5
2.0
2.0
1.5
1.5
1.0
2.0
1.5
1.5
1.0
1.5
1.0
3.0
1.5
2.5
1.0
2.5
1.0
2.0
1.0
Max
8.0
6.5
7.5
6.0
12
9.5
11
8.5
14
11
11
9.0
9.0
6.5
8.5
6.5
12.5
9.5
11.5
8.5
14
10.5
10.5
8.5
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Symbol
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
Parameter
Propagation Delay
Data to Output (
′
AC540)
Propagation Delay
Data to Output (
′
AC540)
Output Enable Time
(
′
AC540)
Output Enable Time
(
′
AC540)
Output Disable Time
(
′
AC540)
Output Disable Time
(
′
AC540)
Propagation Delay
Data to Output (
′
AC541)
Propagation Delay
Data to Output (
′
AC541)
Output Enable Time
(
′
AC541)
Output Enable Time
(
′
AC541)
Output Disable Time
(
′
AC541)
Output Disable Time
(
′
AC541)
V
CC
*
(V)
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
Fig.
No.
3−5
3−5
3−7
3−8
3−7
3−8
3−5
3−5
3−7
3−8
3−7
3−8
*Voltage Range 3.3 V is 3.3 V
±0.3
V.
Voltage Range 5.0 V is 5.0 V
±0.5
V.
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