74AC241, 74ACT241 Octal Buffer/Line Driver with 3-STATE Outputs
March 2007
74AC241, 74ACT241
Octal Buffer/Line Driver with 3-STATE Outputs
Features
■
I
CC
and I
OZ
reduced by 50%
■
Non-inverting 3-STATE outputs drive bus lines or
tm
General Description
The AC/ACT241 is an octal buffer and line driver
designed to be employed as a memory address driver,
clock driver and bus-oriented transmitter or receiver
which provides improved PC board density.
buffer memory address registers
■
Outputs source/sink 24mA
■
ACT241 has TTL-compatible inputs
Ordering Information
Order
Number
74AC241SC
74AC241SJ
74AC241MTC
74ACT241SC
74ACT241SJ
74ACT241MTC
Package
Number
M20B
M20D
MTC20
M20B
M20D
MTC20
Package Description
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering number.
Pb-Free package per JEDEC J-STD-020B.
Logic Symbol
Connection Diagram
Pin Descriptions
Pin Names
OE
1
OE
2
I
0
–I
7
FACT™ is a trademark of Fairchild Semiconductor Corporation
.
©1988 Fairchild Semiconductor Corporation
74AC241, 74ACT241 Rev. 1.5
Description
3-STATE Output Enable Input
3-STATE Output Enable Input
(Active HIGH)
Inputs
Outputs
www.fairchildsemi.com
O
0
–O
7
74AC241, 74ACT241 Octal Buffer/Line Driver with 3-STATE Outputs
Truth Table
Inputs
OE
1
L
L
H
Outputs
I
n
L
H
X
Inputs
OE
2
H
H
L
Outputs
I
n
L
H
X
Pins 12, 14, 16, 18
L
H
Z
X
=
Immaterial
Z
=
High Impedance
Pins 3, 5, 7, 9
L
H
Z
H
=
HIGH Voltage Level
L
=
LOW Voltage Level
Absolute Maximum Ratings
Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be
operable above the recommended operating conditions and stressing the parts to these levels is not recommended.
In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability.
The absolute maximum ratings are stress ratings only.
Symbol
V
CC
I
IK
Supply Voltage
DC Input Diode Current
V
I
=
–0.5V
V
I
=
V
CC
+ 0.5V
V
I
I
OK
DC Input Voltage
DC Output Diode Current
V
O
=
–0.5V
V
O
=
V
CC
+ 0.5V
V
O
I
O
DC Output Voltage
Parameter
Rating
–0.5V to +7.0V
–20mA
+20mA
–0.5V to V
CC
+ 0.5V
–20mA
+20mA
–0.5V to V
CC
+ 0.5V
±50mA
±50mA
–65°C to +150°C
140°C
DC Output Source or Sink Current
I
CC
or I
GND
DC V
CC
or Ground Current per Output Pin
Storage Temperature
T
STG
T
J
Junction Temperature
Recommended Operating Conditions
The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended
operating conditions are specified to ensure optimal performance to the datasheet specifications. Fairchild does not
recommend exceeding them or designing to absolute maximum ratings.
Symbol
V
CC
Supply Voltage
AC
ACT
V
I
V
O
T
A
∆
V /
∆
t
∆
V /
∆
t
Input Voltage
Output Voltage
Operating Temperature
Parameter
Rating
2.0V to 6.0V
4.5V to 5.5V
0V to V
CC
0V to V
CC
–40°C to +85°C
125mV/ns
125mV/ns
Minimum Input Edge Rate, AC Devices:
V
IN
from 30% to 70% of V
CC
, V
CC
@ 3.3V, 4.5V, 5.5V
Minimum Input Edge Rate, ACT Devices:
V
IN
from 0.8V to 2.0V, V
CC
@ 4.5V, 5.5V
©1988 Fairchild Semiconductor Corporation
74AC241, 74ACT241 Rev. 1.5
www.fairchildsemi.com
2
74AC241, 74ACT241 Octal Buffer/Line Driver with 3-STATE Outputs
DC Electrical Characteristics for AC
Symbol
V
IH
Parameter
Minimum HIGH
Level Input Voltage
V
CC
(V)
3.0
4.5
5.5
3.0
4.5
5.5
3.0
4.5
5.5
T
A
=
+25°C
Conditions
V
OUT
=
0.1V
or V
CC
– 0.1V
V
OUT
=
0.1V
or V
CC
– 0.1V
I
OUT
=
–50µA
T
A
=
–40°C to +85°C
Guaranteed Limits
Units
V
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
±0.1
±2.5
µA
µA
V
V
V
Typ.
1.5
2.25
2.75
1.5
2.25
2.75
2.99
4.49
5.49
2.1
3.15
3.85
0.9
1.35
1.65
2.9
4.4
5.4
2.56
3.86
4.86
V
IL
Maximum LOW
Level Input Voltage
V
OH
Minimum HIGH
Level Output Voltage
V
IN
=
V
IL
or V
IH
:
3.0
4.5
5.5
V
OL
Maximum LOW
Level Output Voltage
3.0
4.5
5.5
V
IN
=
V
IL
or V
IH
:
3.0
4.5
5.5
I
IN(3)
I
OZ
Maximum Input
Leakage Current
Maximum 3-STATE
Leakage Current
Minimum Dynamic
Output Current
(2)
Maximum Quiescent
Supply Current
5.5
5.5
I
OL
=
12mA
I
OL
=
24mA
I
OL
=
24mA
(1)
V
I
=
V
CC
, GND
V
I
(OE)
=
V
IL
, V
IH
;
V
I
=
V
CC
, GND;
V
O
=
V
CC
, GND
V
OLD
=
1.65V Max.
V
OHD
=
3.85V Min.
5.5
V
IN
=
V
CC
or GND
4.0
0.36
0.36
0.36
±0.1
±0.25
I
OH
=
–12mA
I
OH
=
–24mA
I
OH
=
–24mA
(1)
I
OUT
=
50µA
0.002
0.001
0.001
0.1
0.1
0.1
I
OLD
I
OHD
I
CC(3)
5.5
75
–75
40.0
mA
mA
µA
Notes:
1. All outputs loaded; thresholds on input associated with output under test.
2. Maximum test duration 2.0ms, one output loaded at a time.
3. I
IN
and I
CC
@ 3.0V are guaranteed to be less than or equal to the respective limit @ 5.5V V
CC
.
©1988 Fairchild Semiconductor Corporation
74AC241, 74ACT241 Rev. 1.5
www.fairchildsemi.com
3
74AC241, 74ACT241 Octal Buffer/Line Driver with 3-STATE Outputs
DC Electrical Characteristics for ACT
Symbol
V
IH
V
IL
V
OH
Parameter
Minimum HIGH
Level Input Voltage
Maximum LOW
Level Input Voltage
Minimum HIGH
Level Output
Voltage
V
CC
(V)
4.5
5.5
4.5
5.5
4.5
5.5
T
A
=
+25°C
Conditions
V
OUT
=
0.1V or
V
CC
– 0.1V
V
OUT
=
0.1V or
V
CC
– 0.1V
I
OUT
=
–50µA
V
IN
=
V
IL
or V
IH
:
T
A
=
–40°C to +85°C
Units
V
V
V
2.0
2.0
0.8
0.8
4.4
5.4
3.76
4.76
0.1
0.1
0.44
0.44
± 1.0
±2.5
1.5
75
–75
µA
µA
mA
mA
mA
µA
V
Typ.
1.5
1.5
1.5
1.5
4.49
5.49
2.0
2.0
0.8
0.8
4.4
5.4
Guaranteed Limits
4.5
5.5
V
OL
Maximum LOW
Level Output
Voltage
4.5
5.5
I
OH
=
–24mA
I
OH
=
–24mA
(4)
I
OUT
=
50µA
V
IN
=
V
IL
or V
IH
:
0.001
0.001
I
OL
=
24mA
I
OL
=
24mA
(4)
V
I
=
V
CC
, GND
V
I
=
V
IL
, V
IH
;
V
O
=
V
CC
, GND
V
I
=
V
CC
– 2.1V
V
OLD
=
1.65V Max.
V
OHD
=
3.85V Min.
V
IN
=
V
CC
or GND
0.6
3.86
4.86
0.1
0.1
0.36
0.36
±0.1
±0.25
4.5
5.5
I
IN
I
OZ
I
CCT
I
OLD
I
OHD
I
CC
Maximum Input
Leakage Current
Maximum 3-STATE
Leakage Current
Maximum I
CC
/Input
Minimum Dynamic
Output Current
(5)
Maximum
Quiescent Supply
Current
5.5
5.5
5.5
5.5
5.5
4.0
40.0
Notes:
4. All outputs loaded; thresholds on input associated with output under test.
5. Maximum test duration 2.0ms, one output loaded at a time.
©1988 Fairchild Semiconductor Corporation
74AC241, 74ACT241 Rev. 1.5
www.fairchildsemi.com
4
74AC241, 74ACT241 Octal Buffer/Line Driver with 3-STATE Outputs
AC Electrical Characteristics for AC
T
A
=
+25°C,
C
L
=
50pF
Symbol
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
T
A
=
–40°C to +85°C,
C
L
=
50pF
Max.
9.0
7.0
9.0
7.0
12.5
9.0
12.0
9.0
12.0
10.0
12.5
10.0
Parameter
Propagation Delay,
Data to Output
Propagation Delay,
Data to Output
Output Enable Time
Output Enable Time
Output Disable Time
Output Disable Time
V
CC
(V)
(6)
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
Min.
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
2.0
1.5
1.5
1.5
Typ.
6.0
5.0
6.0
4.5
6.5
5.5
7.0
5.5
8.0
6.5
7.0
6.0
Min.
1.5
1.0
1.0
1.0
1.0
1.0
1.5
1.0
2.0
1.0
1.0
1.0
Max.
10.0
7.5
10.5
7.5
13.0
9.5
13.0
9.5
12.5
10.5
13.0
10.5
Units
ns
ns
ns
ns
ns
ns
Note:
6. Voltage range 3.3 is 3.3V ± 3.3V. Voltage range 5.0 is 5.0V ± 0.5V.
AC Electrical Characteristics for ACT
T
A
=
+25°C,
C
L
=
50pF
Symbol
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
T
A
=
–40°C to +85°C,
C
L
=
50pF
Min.
1.5
1.5
1.0
1.5
1.5
1.5
Parameter
Propagation Delay,
Data to Output
Propagation Delay,
Data to Output
Output Enable Time
Output Enable Time
Output Disable Time
Output Disable Time
V
CC
(V)
(7)
5.0
5.0
5.0
5.0
5.0
5.0
Min.
1.5
1.5
1.5
1.5
1.5
2.0
Typ.
6.5
7.0
6.0
7.0
8.0
7.0
Max.
9.0
9.0
9.0
10.0
10.5
10.5
Max.
10.0
10.0
10.0
11.0
11.5
11.5
Units
ns
ns
ns
ns
ns
ns
Note:
7. Voltage range 5.0 is 5.0V ± 0.5V.
Capacitance
Symbol
C
IN
C
PD
Parameter
Input Capacitance
Power Dissipation Capacitance
Conditions
V
CC
=
OPEN
V
CC
=
5.0V
Typ.
4.5
45.0
Units
pF
pF
©1988 Fairchild Semiconductor Corporation
74AC241, 74ACT241 Rev. 1.5
www.fairchildsemi.com
5
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