© Semiconductor Components Industries, LLC, 2015
March, 2015 − Rev. 9
1 Publication Order Number:
MC74AC540/D
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
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
TRUTH TABLE
Inputs Outputs
OE
1
OE
2
D 540 541
L
H
X
L
L
X
H
L
H
X
X
L
L
Z
Z
H
H
Z
Z
L
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
Z = High Impedance
See general marking information in the device marking
section on page 8 of this data sheet.
DEVICE MARKING INFORMATION
www.
onsemi.com
SOIC−20W
DW SUFFIX
CASE 751D
TSSOP−20
DT SUFFIX
CASE 948E
1
1
See detailed ordering and shipping information in the package
dimensions section on page 8 of this data sheet.
ORDERING INFORMATION
MC74AC540, MC74ACT540, MC74AC541, MC74ACT541
www.onsemi.com
2
Figure 1. MC74AC540/74ACT540
1
OE
1
2
3
4
5
6
7
8
9
10
GND
20
19
18
17
16
15
14
13
12
11
V
CC
OE
2
1
OE
1
2
3
4
5
6
7
8
9
10
GND
20
19
18
17
16
15
14
13
12
11
V
CC
OE
2
Figure 2. MC74AC541/74ACT541
MC74AC540, MC74ACT540, MC74AC541, MC74ACT541
www.onsemi.com
3
MAXIMUM RATINGS
Symbol Parameter Value Unit
V
CC
DC Supply Voltage (Referenced to GND) −0.5 to +7.0 V
V
IN
DC Input Voltage (Referenced to GND) −0.5 to V
CC
+0.5 V
V
OUT
DC Output Voltage (Referenced to GND) (Note 1) −0.5 to V
CC
+0.5 V
I
IK
DC Input Diode Current ±20 mA
I
OK
DC Output Diode Current ±50 mA
I
OUT
DC Output Sink/Source Current ±50 mA
I
CC
DC Supply Current, per Output Pin ±50 mA
I
GND
DC Ground Current, per Output Pin ±100 mA
T
STG
Storage Temperature Range *65 to )150
_C
T
L
Lead temperature, 1 mm from Case for 10 Seconds 260
_C
T
J
Junction Temperature Under Bias 140
_C
q
JA
Thermal Resistance (Note 2) SOIC
TSSOP
65.8
110.7
_C/W
MSL Moisture Sensitivity Level 1
F
R
Flammability Rating Oxygen Index: 30% − 35% UL 94 V−0 @ 0.125 in
V
ESD
ESD Withstand Voltage Human Body Model (Note 3)
Machine Model (Note 4)
Charged Device Model (Note 5)
> 2000
> 200
> 1000
V
I
Latchup
Latchup Performance Above V
CC
and Below GND at 85_C (Note 6)
±100 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 Parameter Min Typ Max Unit
V
CC
Supply Voltage
AC 2.0 5.0 6.0
V
ACT 4.5 5.0 5.5
V
IN
, V
OUT
DC Input Voltage, Output Voltage (Ref. to GND) 0 V
CC
V
t
r
, t
f
Input Rise and Fall Time (Note 1)
AC Devices except Schmitt Inputs
V
CC
@ 3.0 V 150
V
CC
@ 4.5 V 40 ns/V
V
CC
@ 5.5 V 25
t
r
, t
f
Input Rise and Fall Time (Note 2)
ACT Devices except Schmitt Inputs
V
CC
@ 4.5 V 10
ns/V
V
CC
@ 5.5 V 8.0
T
A
Operating Ambient Temperature Range −40 25 85 °C
I
OH
Output Current − High −24 mA
I
OL
Output Current − Low 24 mA
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.

MC74AC540N

Mfr. #:
Manufacturer:
ON Semiconductor
Description:
Buffers & Line Drivers LOG CMOS BUS INTRFCE OCTL
Lifecycle:
New from this manufacturer.
Delivery:
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