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HD74AC241/HD74ACT241
Octal Buffer/Line Driver with 3-State Output
Description
The HD74AC241/HD74ACT241 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.
Features
• 3-State Outputs Drive Bus Lines or Buffer Memory Address Registers
• Outputs Source/Sink 24 mA
• HD74ACT241 has TTL-Compatible Inputs
Pin Arrangement
1
OE1V
2
3
4
5
6
7
8
9
10
GND
(Top view)
20
19
18
17
16
15
14
13
12
11
CC
OE2
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HD74AC241/HD74ACT241
Truth Tables
Inputs
OE
1
LLL
LHH
HXZ
Inputs
OE
2
HLL
HHH
LXZ
H : High Voltage Level
L : Low Voltage Level
X : Immaterial
Z : High Impedance
D Outputs (Pins 12, 14, 16, 18)
D Outputs (Pins 3, 5, 7, 9)
DC Characteristics (unless otherwise specified)
Item Symbol Max Unit Condition
Maximum quiescent supply current I
Maximum quiescent supply current I
Maximum additional ICC/input
(HD74ACT241)
CC
CC
I
CCT
80 µAV
8.0 µAV
1.5 mA VIN = VCC – 2.1 V, VCC = 5.5 V,
= VCC or ground, VCC = 5.5 V,
IN
Ta = Worst case
= VCC or ground, VCC = 5.5 V,
IN
Ta = 25°C
Ta = Worst case
2
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AC Characteristics: HD74AC241
HD74AC241/HD74ACT241
Item Symbol V
Propagation delay t
PLH
Ta = +25°C
C
= 50 pF
L
(V)*1Min Typ Max Min Max Unit
CC
3.3 1.0 6.0 9.0 1.0 10.0 ns
Ta = –40°C to +85°C
CL = 50 pF
Data to output 5.0 1.0 5.0 7.0 1.0 7.5
Propagation delay t
PHL
3.3 1.0 6.0 9.0 1.0 10.5 ns
Data to output 5.0 1.0 4.5 7.0 1.0 7.5
Output enable time t
PZH
3.3 1.0 6.5 12.5 1.0 13.0 ns
5.0 1.0 5.5 9.0 1.0 9.5
Output enable time t
PZL
3.3 1.0 7.0 12.0 1.0 13.0 ns
5.0 1.0 5.5 9.0 1.0 9.5
Output disable time t
PHZ
3.3 1.0 8.0 12.0 1.0 12.5 ns
5.0 1.0 6.5 10.0 1.0 10.5
Output disable time t
PLZ
3.3 1.0 7.0 12.5 1.0 13.5 ns
5.0 1.0 6.0 10.0 1.0 10.5
Note: 1. Voltage Range 3.3 is 3.3 V ± 0.3 V
Voltage Range 5.0 is 5.0 V ± 0.5 V
AC Characteristics: HD74ACT241
Item Symbol V
Propagation delay
t
PLH
(V)*1Min Typ Max Min Max Unit
CC
5.0 1.0 6.5 9.0 1.0 10.0 ns
Data to output
Propagation delay
t
PHL
5.0 1.0 7.0 9.0 1.0 10.0 ns
Data to output
Output enable time t
Output enable time t
Output disable time t
Output disable time t
PZH
PZL
PHZ
PLZ
5.0 1.0 6.0 9.0 1.0 10.0 ns
5.0 1.0 7.0 10.0 1.0 11.0 ns
5.0 1.0 8.0 10.5 1.0 11.5 ns
5.0 1.0 7.0 10.5 1.0 11.5 ns
Note: 1. Voltage Range 5.0 is 5.0 V ± 0.5 V
Ta = +25°C
C
= 50 pF
L
Ta = –40°C to +85°C
CL = 50 pF
3
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HD74AC241/HD74ACT241
Capacitance
Item Symbol Typ Unit Condition
Input capacitance C
Power dissipation capacitance C
IN
PD
4.5 pF VCC = 5.5 V
45.0 pF VCC = 5.0 V
4
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24.50
25.40 Max
Unit: mm
1120
6.30
1
0.89
1.27 Max
2.54 ± 0.25
1.30
10
0.48 ± 0.10
7.00 Max
0.51 Min
2.54 Min 5.08 Max
Hitachi Code
JEDEC
EIAJ
Weight
7.62
+ 0.11
0.25
– 0.05
0° – 15°
(reference value)
DP-20N
—
Conforms
1.26 g
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20
Unit: mm
12.6
13 Max
11
5.5
1
0.80 Max
1.27
*0.42 ± 0.08
0.40 ± 0.06
*Dimension including the plating thickness
Base material dimension
10
0.12
0.10 ± 0.10
0.15
M
2.20 Max
7.80
0.20 ± 0.04
*0.22 ± 0.05
0.70 ± 0.20
Hitachi Code
JEDEC
EIAJ
Weight
(reference value)
+ 0.20
– 0.30
1.15
0° – 8°
FP-20DA
—
Conforms
0.31 g
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20
Unit: mm
12.8
13.2 Max
11
7.50
1
0.935 Max
1.27
*0.42 ± 0.08
0.40 ± 0.06
*Dimension including the plating thickness
Base material dimension
10
0.12
0.20 ± 0.10
0.15
M
2.65 Max
10.40
0.25 ± 0.04
*0.27 ± 0.05
0.70
Hitachi Code
JEDEC
EIAJ
Weight
+ 0.25
– 0.40
1.45
+ 0.57
– 0.30
(reference value)
0° – 8°
FP-20DB
Conforms
—
0.52 g
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20 11
110
+0.08
*0.22
–0.07
0.20 ± 0.06
6.50
6.80 Max
0.65 Max
0.65
0.13
Unit: mm
4.40
1.0
M
6.40 ± 0.20
0.10
1.10 Max
*Dimension including the plating thickness
Base material dimension
0.15 ± 0.04
*0.17 ± 0.05
+0.03
–0.04
0.07
0° – 8°
Hitachi Code
JEDEC
EIAJ
(reference value)
Weight
0.50 ± 0.10
TTP-20DA
—
—
0.07 g
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Cautions
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copyright, trademark, or other intellectual property rights for information contained in this document.
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intellectual property rights, in connection with use of the information contained in this document.
2. Products and product specifications may be subject to change without notice. Confirm that you have
received the latest product standards or specifications before final design, purchase or use.
3. Hitachi makes every attempt to ensure that its products are of high quality and reliability. However,
contact Hitachi’s sales office before using the product in an application that demands especially high
quality and reliability or where its failure or malfunction may directly threaten human life or cause risk
of bodily injury, such as aerospace, aeronautics, nuclear power, combustion control, transportation,
traffic, safety equipment or medical equipment for life support.
4. Design your application so that the product is used within the ranges guaranteed by Hitachi particularly
for maximum rating, operating supply voltage range, heat radiation characteristics, installation
conditions and other characteristics. Hitachi bears no responsibility for failure or damage when used
beyond the guaranteed ranges. Even within the guaranteed ranges, consider normally foreseeable
failure rates or failure modes in semiconductor devices and employ systemic measures such as failsafes, so that the equipment incorporating Hitachi product does not cause bodily injury, fire or other
consequential damage due to operation of the Hitachi product.
5. This product is not designed to be radiation resistant.
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7. Contact Hitachi’s sales office for any questions regarding this document or Hitachi semiconductor
products.
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