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74AHC241; 74AHCT241
Octal buffer/line driver; 3-state
Rev. 01 — 11 January 2010
Product data sheet
1. General description
The 74AHC241 and 74AHCT241 are 8-bit buffer/line drivers with 3-state outputs. These
devices can be used as two 4-bit buffers or one 8-bit buffer. They feature two output
enables (1OE and 2OE), each controlling four of the 3-state outputs. A HIGH on 1OE or
LOW on 2OE causes the associated outputs to assume a high-impedance OFF-state.
Inputs are over voltage tolerant. This feature allows the use of these devices as
translators in mixed voltage environments.
2. Features
Balanced propagation delays
All inputs have a Schmitt-trigger action
Inputs accepts voltages higher than V
CC
For 74AHC241 only: operates with CMOS input levels
For 74AHCT241 only: operates with TTL input levels
ESD protection:
HBM JESD22-A114F exceeds 2 000 V
CDM JESD22-C101D exceeds 1 000 V
Multiple package options
Specified from
−40 °C
to +85
°C
and from
−40 °C
to +125
°C
3. Ordering information
Table 1.
Ordering information
Package
Temperature range
74AHC241D
74AHCT241D
74AHC241PW
74AHCT241PW
74AHC241BQ
74AHCT241BQ
−40 °C
to +125
°C
DHVQFN20
−40 °C
to +125
°C
TSSOP20
−40 °C
to +125
°C
Name
SO20
Description
plastic small outline package; 20 leads;
body width 7.5 mm
plastic thin shrink small outline package; 20 leads;
body width 4.4 mm
Version
SOT163-1
SOT360-1
Type number
plastic dual in-line compatible thermal enhanced
SOT764-1
very thin quad flat package; no leads; 20 terminals;
body 2.5
×
4.5
×
0.85 mm
NXP Semiconductors
74AHC241; 74AHCT241
Octal buffer/line driver; 3-state
4. Functional diagram
1
2
17
4
15
6
13
8
11
1
1A0
2A0
1A1
2A1
1A2
2A2
1A3
2A3
1OE
1Y0
2Y0
1Y1
2Y1
1Y2
2Y2
1Y3
2Y3
18
3
2
16
5
14
7
12
9
11
13
15
19
2OE
mna771
EN
18
16
14
12
4
6
8
19
EN
9
7
5
3
mna773
17
Fig 1.
Logic symbol
Fig 2.
IEC logic symbol
5. Pinning information
5.1 Pinning
74AHC241
74AHCT241
1OE
2
3
4
5
6
7
8
9
GND 10
2A3 11
GND
(1)
1
terminal 1
index area
20 V
CC
19 2OE
18 1Y0
17 2A0
16 1Y1
15 2A1
14 1Y2
13 2A2
12 1Y3
74AHC241
74AHCT241
1OE
1A0
2Y0
1A1
2Y1
1A2
2Y2
1A3
2Y3
1
2
3
4
5
6
7
8
9
20 V
CC
19 2OE
18 1Y0
17 2A0
16 1Y1
15 2A1
14 1Y2
13 2A2
12 1Y3
11 2A3
001aal190
1A0
2Y0
1A1
2Y1
1A2
2Y2
1A3
2Y3
GND 10
001aal191
Transparent top view
(1) The die substrate is attached to this pad using
conductive die attach material. It can not be used as a
supply pin or input.
It is recommended that no
connection is made at all.
Fig 3.
Pin configuration SO20 and TSSOP20
Fig 4.
Pin configuration DHVQFN20
74AHC_AHCT241_1
© NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 01 — 11 January 2010
2 of 15
NXP Semiconductors
74AHC241; 74AHCT241
Octal buffer/line driver; 3-state
5.2 Pin description
Table 2.
Symbol
1OE
2OE
1A0, 1A1, 1A2, 1A3
2A0, 2A1, 2A2, 2A3
1Y0, 1Y1, 1Y2, 1Y3
2Y0, 2Y1, 2Y2, 2Y3
GND
V
CC
Pin description
Pin
1
19
2, 4, 6, 8
17, 15, 13, 11
18, 16, 14, 12
3, 5, 7, 9
10
20
Description
output enable input (active LOW)
output enable input (active HIGH)
data input
data input
data output
data output
ground (0 V)
power supply
6. Functional description
Table 3.
Input
1OE
L
L
H
[1]
Function table
[1]
Output
1An
L
H
X
1Yn
L
H
Z
Input
2OE
H
H
L
2An
L
H
X
Output
2Yn
L
H
Z
H = HIGH voltage level; L = LOW voltage level; X = don’t care; Z = high-impedance OFF-state.
7. Limiting values
Table 4.
Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V).
Symbol
V
CC
V
I
I
IK
I
OK
I
O
I
CC
I
GND
T
stg
P
tot
[1]
[2]
Parameter
supply voltage
input voltage
input clamping current
output clamping current
output current
supply current
ground current
storage temperature
total power dissipation
Conditions
Min
−0.5
−0.5
Max
+7.0
+7.0
-
±20
±25
75
-
+150
500
Unit
V
V
mA
mA
mA
mA
mA
°C
mW
V
I
<
−0.5
V
V
O
<
−0.5
V or V
O
> V
CC
+ 0.5 V
V
O
=
−0.5
V to (V
CC
+ 0.5 V)
[1]
[1]
−20
-
-
-
−75
−65
T
amb
=
−40 °C
to +125
°C
[2]
-
The minimum input and output voltage ratings may be exceeded if the input and output current ratings are observed.
For SO20 package: above 70
°C
the value of P
tot
derates linearly with 8.0 mW/K.
For TSSOP20 package: above 60
°C
the value of P
tot
derates linearly with 5.5 mW/K.
For DHVQFN20 package: above 60
°C
the value of P
tot
derates linearly with 4.5 mW/K.
74AHC_AHCT241_1
© NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 01 — 11 January 2010
3 of 15
NXP Semiconductors
74AHC241; 74AHCT241
Octal buffer/line driver; 3-state
8. Recommended operating conditions
Table 5.
Symbol
74AHC241
V
CC
V
I
V
O
T
amb
Δt/ΔV
74AHCT241
V
CC
V
I
V
O
T
amb
Δt/ΔV
supply voltage
input voltage
output voltage
ambient temperature
input transition rise and fall rate
V
CC
= 5 V
±
0.5 V
4.5
0
0
−40
-
5.0
-
-
+25
-
5.5
5.5
V
CC
+125
20
V
V
V
°C
ns/V
supply voltage
input voltage
output voltage
ambient temperature
input transition rise and fall rate
V
CC
= 3.3 V
±
0.3 V
V
CC
= 5 V
±
0.5 V
2.0
0
0
−40
-
-
5.0
-
-
+25
-
-
5.5
5.5
V
CC
+125
1 00
20
V
V
V
°C
ns/V
ns/V
Recommended operating conditions
Parameter
Conditions
Min
Typ
Max
Unit
9. Static characteristics
Table 6.
Static characteristics
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
Symbol Parameter
74AHC241
V
IH
HIGH-level
input voltage
V
CC
= 2.0 V
V
CC
= 3.0 V
V
CC
= 5.5 V
V
IL
LOW-level
input voltage
V
CC
= 2.0 V
V
CC
= 3.0 V
V
CC
= 5.5 V
V
OH
HIGH-level
V
I
= V
IH
or V
IL
output voltage
I
O
=
−50 μA;
V
CC
= 2.0 V
I
O
=
−50 μA;
V
CC
= 3.0 V
I
O
=
−50 μA;
V
CC
= 4.5 V
I
O
=
−4.0
mA; V
CC
= 3.0 V
I
O
=
−8.0
mA; V
CC
= 4.5 V
V
OL
LOW-level
V
I
= V
IH
or V
IL
output voltage
I
O
= 50
μA;
V
CC
= 2.0 V
I
O
= 50
μA;
V
CC
= 3.0 V
I
O
= 50
μA;
V
CC
= 4.5 V
I
O
= 4.0 mA; V
CC
= 3.0 V
I
O
= 8.0 mA; V
CC
= 4.5 V
74AHC_AHCT241_1
Conditions
Min
1.5
2.1
3.85
-
-
-
1.9
2.9
4.4
2.58
3.94
-
-
-
-
-
25
°C
Typ
-
-
-
-
-
-
2.0
3.0
4.5
-
-
0
0
0
-
-
Max
-
-
-
0.5
0.9
1.65
-
-
-
-
-
0.1
0.1
0.1
0.36
0.36
−40 °C
to +85
°C −40 °C
to +125
°C
Unit
Min
1.5
2.1
3.85
-
-
-
1.9
2.9
4.4
2.48
3.80
-
-
-
-
-
Max
-
-
-
0.5
0.9
1.65
-
-
-
-
-
0.1
0.1
0.1
0.44
0.44
Min
1.5
2.1
3.85
-
-
-
1.9
2.9
4.4
2.40
3.70
-
-
-
-
-
Max
-
-
-
0.5
0.9
1.65
-
-
-
-
-
0.1
0.1
0.1
0.55
0.55
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
© NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 01 — 11 January 2010
4 of 15
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