74AHC244-Q100;
74AHCT244-Q100
Octal buffer/line driver; 3-state
Rev. 1 — 9 July 2012
Product data sheet
1. General description
The 74AHC244-Q100; 74AHCT244-Q100 is a high-speed Si-gate CMOS device.
The 74AHC244-Q100; 74AHCT244-Q100 has octal non-inverting buffer/line drivers with
3-state outputs. The 3-state outputs are controlled by the output enable inputs (nOE). A
HIGH on nOE causes the outputs to assume a high-impedance OFF-state.
This product has been qualified to the Automotive Electronics Council (AEC) standard
Q100 (Grade 1) and is suitable for use in automotive applications.
2. Features and benefits
Automotive product qualification in accordance with AEC-Q100 (Grade 1)
Specified from
40 C
to +85
C
and from
40 C
to +125
C
Balanced propagation delays
All inputs have a Schmitt trigger action
Inputs accept voltages higher than V
CC
For 74AHC244-Q100 only: operates with CMOS input levels
For 74AHCT244-Q100 only: operates with TTL input levels
ESD protection:
MIL-STD-883, method 3015 exceeds 2000 V
HBM JESD22-A114F exceeds 2000 V
MM JESD22-A115-A exceeds 200 V (C = 200 pf, R = 0
)
Multiple package options
Nexperia
74AHC244-Q100; 74AHCT244-Q100
Octal buffer/line driver; 3-state
3. Ordering information
Table 1.
Ordering information
Package
Temperature range Name
74AHC244D-Q100
74AHCT244D-Q100
74AHC244PW-Q100
74AHCT244PW-Q100
74AHC244BQ-Q100
74AHCT244BQ-Q100
40 C
to +125
C
40 C
to +125
C
TSSOP20
40 C
to +125
C
SO20
Description
plastic small outline package; 20 leads;
body width 7.5 mm
Version
SOT163-1
Type number
plastic thin shrink small outline package; 20 leads; SOT360-1
body width 4.4 mm
DHVQFN20 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
4. Functional diagram
2
1A0
1Y0
18
4
1A1
1Y1
16
6
1A2
1Y2
14
8
1
1A3
1OE
1Y3
12
17
2A0
2Y0
3
15
2A1
2Y1
5
13
2A2
2Y2
7
11
19
2A3
2OE
2Y3
9
mna170
Fig 1.
Functional diagram
74AHC_AHCT244_Q100
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 1 — 9 July 2012
2 of 17
Nexperia
74AHC244-Q100; 74AHCT244-Q100
Octal buffer/line driver; 3-state
1
EN
18
16
14
12
2
4
1A0
2
18
1Y0
2A0
17
3
6
2Y0
8
1A1
4
16
1Y1
2A1
15
5
2Y1
19
EN
9
7
5
3
mna873
1A2
6
14
1Y2
2A2
13
7
2Y2
11
13
1A3
1OE
8
1
12
1Y3
2A3
2OE
11
19
9
2Y3
15
17
mna874
Fig 2.
Logic symbol
Fig 3.
IEC logic symbol
5. Pinning information
5.1 Pinning
74AHC244-Q100
74AHCT244-Q100
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
74AHC244-Q100
74AHCT244-Q100
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
aaa-003140
1A0
2Y0
1A1
2Y1
1A2
2Y2
1A3
2Y3
GND 10
aaa-003141
Transparent top view
(1) This is not a supply pin. The substrate is attached to this
pad using conductive die attach material. There is no
electrical or mechanical requirement to solder this pad.
However, if it is soldered, the solder land should remain
floating or be connected to GND.
Fig 4.
Pin configuration SO20, TSSOP20
Fig 5.
Pin configuration DHVQFN20
74AHC_AHCT244_Q100
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 1 — 9 July 2012
3 of 17
Nexperia
74AHC244-Q100; 74AHCT244-Q100
Octal buffer/line driver; 3-state
5.2 Pin description
Table 2.
Symbol
1OE, 2OE
1A[0:3]
2A[0:3]
1Y[0:3]
2Y[0:3]
GND
V
CC
Pin description
Pin
1, 19
2, 4, 6, 8
Description
output enable input (active LOW)
data input
17, 15, 13, 11 data input
18, 16, 14, 12 data output
3, 5, 7, 9
10
20
data output
ground (0 V)
supply voltage
6. Functional description
Table 3.
Control
nOE
L
H
[1]
Function table
[1]
Input
nAn
L
H
X
Output
nYn
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
Parameter
supply voltage
input voltage
input clamping current
output clamping current
output current
supply current
ground current
storage temperature
total power dissipation
SO20 package
TSSOP20 package
DHVQFN20 package
[1]
[2]
[3]
[4]
Conditions
Min
0.5
0.5
Max
+7.0
+7.0
-
20
25
75
-
+150
500
500
500
Unit
V
V
mA
mA
mA
mA
mA
C
mW
mW
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]
[3]
[4]
-
-
-
The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
P
tot
derates linearly with 8 mW/K above 70
C.
P
tot
derates linearly with 5.5 mW/K above 60
C.
P
tot
derates linearly with 4.5 mW/K above 60
C.
74AHC_AHCT244_Q100
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 1 — 9 July 2012
4 of 17
Nexperia
74AHC244-Q100; 74AHCT244-Q100
Octal buffer/line driver; 3-state
8. Recommended operating conditions
Table 5.
Recommended operating conditions
Voltages are referenced to GND (ground = 0 V).
Symbol Parameter
V
CC
V
I
V
O
T
amb
t/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
= 5.0 V
0.5 V
Conditions
74AHC244-Q100
Min
2.0
0
0
40
-
-
Typ
5.0
-
-
+25
-
-
Max
5.5
5.5
V
CC
+125
100
20
74AHCT244-Q100
Min
4.5
0
0
40
-
-
Typ
5.0
-
-
+25
-
-
Max
5.5
5.5
V
CC
+125
-
20
V
V
V
C
ns/V
ns/V
Unit
9. Static characteristics
Table 6.
Static characteristics
Voltages are referenced to GND (ground = 0 V).
Symbol Parameter
74AHC244-Q100
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 A;
V
CC
= 2.0 V
I
O
=
50 A;
V
CC
= 3.0 V
I
O
=
50 A;
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
A;
V
CC
= 2.0 V
I
O
= 50
A;
V
CC
= 3.0 V
I
O
= 50
A;
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
I
OZ
OFF-state
V
I
= V
IH
or V
IL
;
output current V
O
= V
CC
or GND;
V
CC
= 5.5 V
input leakage
current
V
I
= 5.5 V or GND;
V
CC
= 0 V to 5.5 V
1.5
2.1
3.85
-
-
-
1.9
2.9
4.4
2.58
3.94
-
-
-
-
-
-
-
-
-
-
-
-
2.0
3.0
4.5
-
-
0
0
0
-
-
-
-
-
-
0.5
0.9
1.65
-
-
-
-
-
0.1
0.1
0.1
0.36
0.36
0.25
1.5
2.1
3.85
-
-
-
1.9
2.9
4.4
2.48
3.8
-
-
-
-
-
-
-
-
-
0.5
0.9
1.65
-
-
-
-
-
0.1
0.1
0.1
0.44
0.44
2.5
1.5
2.1
3.85
-
-
-
1.9
2.9
4.4
2.40
3.70
-
-
-
-
-
-
-
-
-
0.5
0.9
1.65
-
-
-
-
-
0.1
0.1
0.1
0.55
0.55
10.0
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
A
Conditions
Min
25
C
Typ
Max
40 C
to +85
C 40 C
to +125
C
Unit
Min
Max
Min
Max
I
I
I
CC
-
-
-
-
0.1
4.0
-
-
1.0
40
-
-
©
2.0
80
A
A
supply current V
I
= V
CC
or GND; I
O
= 0 A;
V
CC
= 5.5 V
74AHC_AHCT244_Q100
All information provided in this document is subject to legal disclaimers.
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 1 — 9 July 2012
5 of 17
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