74LVT244A; 74LVTH244A
3.3 V octal buffer/line driver; 3-state
Rev. 5 — 16 August 2017
Product data sheet
1
General description
The 74LVT244A; 74LVTH244A is a high-performance BiCMOS product designed for V
CC
operation at 3.3 V.
This device is an octal buffer that is ideal for driving bus lines. The device features two
output enables (1OE, 2OE), each controlling four of the 3-state outputs.
2
Features and benefits
•
•
•
•
•
•
•
•
•
•
Octal bus interface
3-state buffers
Output capability: +64 mA and -32 mA
TTL input and output switching levels
Input and output interface capability to systems at 5 V supply
Bus hold data inputs eliminate need for external pull-up resistors to hold unused inputs
Live insertion and extraction permitted
Power-up 3-state
No bus current loading when output is tied to 5 V bus
Latch-up protection
–
JESD78 Class II exceeds 500 mA
•
ESD protection:
–
HBM JESD22-A114E exceeds 2000 V
–
MM JESD22-A115-A exceeds 200 V
3
Ordering information
Package
Temperature range Name
Description
plastic small outline package; 20 leads;
body width 7.5 mm
plastic shrink small outline package; 20 leads;
body width 5.3 mm
plastic thin shrink small outline package; 20 leads;
body width 4.4 mm
Table 1. Ordering information
Type number
74LVT244AD
74LVTH244AD
74LVT244ADB
74LVTH244ADB
74LVT244APW
74LVTH244APW
74LVT244ABQ
74LVTH244ABQ
Version
SOT163-1
SOT339-1
SOT360-1
-40 °C to +85 °C
-40 °C to +85 °C
-40 °C to +85 °C
-40 °C to +85 °C
SO20
SSOP20
TSSOP20
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
Nexperia
74LVT244A; 74LVTH244A
3.3 V octal buffer/line driver; 3-state
4
Functional diagram
2
1A0
1Y0
18
4
1A1
1Y1
16
6
1A2
1Y2
14
8
1
1A3
1OE
1Y3
12
1
EN
18
16
14
12
2
2A0
2Y0
4
9
11
6
8
13
2A1
2Y1
7
15
2A2
2Y2
19
5
EN
9
7
5
3
mna826
17
19
2A3
2OE
2Y3
11
3
13
15
17
mna825
Figure 1. Logic symbol
Figure 2. IEC logic symbol
74LVT_LVTH244A
All information provided in this document is subject to legal disclaimers.
© Nexperia B.V. 2017. All rights reserved.
Product data sheet
Rev. 5 — 16 August 2017
2 / 17
Nexperia
74LVT244A; 74LVTH244A
3.3 V octal buffer/line driver; 3-state
5
Pinning information
5.1 Pinning
74LVT244A
74LVTH244A
1OE
2
3
4
5
6
7
8
9
GND 10
2A0 11
GND
(1)
1
terminal 1
index area
1A0
2Y3
1A1
2Y2
20 V
CC
19 2OE
18 1Y0
17 2A3
16 1Y1
15 2A2
14 1Y2
13 2A1
12 1Y3
74LVT244A
74LVTH244A
1OE
1OE
1A0
2Y3
1A1
2Y2
1A2
2Y1
1A3
2Y0
1
2
3
4
5
6
7
8
9
20 V
CC
19 2OE
18 1Y0
17 2A3
16 1Y1
15 2A2
14 1Y2
13 2A1
12 1Y3
11 2A0
aaa-027310
74LVT244A
74LVTH244A
1
2
3
4
5
6
7
8
9
20 V
CC
19 2OE
18 1Y0
17 2A3
16 1Y1
15 2A2
14 1Y2
13 2A1
12 1Y3
11 2A0
001aae510
1A2
2Y1
1A3
2Y0
1A0
2Y3
1A1
2Y2
1A2
2Y1
1A3
2Y0
001aah764
Transparent top view
GND 10
GND 10
(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.
Figure 5. Pin configuration for
DHVQFN20
Figure 4. Pin configuration for
Figure 3. Pin configuration for SO20 (T)SSOP20
5.2 Pin description
Table 2. Pin description
Symbol
1OE, 2OE
1A0, 1A1, 1A2, 1A3
2Y0, 2Y1, 2Y2, 2Y3
GND
2A0, 2A1, 2A2, 2A3
1Y0, 1Y1, 1Y2, 1Y3
V
CC
Pin
1, 19
2, 4, 6, 8
9, 7, 5, 3
10
11, 13, 15, 17
18, 16, 14, 12
20
Description
output enable input (active low)
data input
data output
ground (0 V)
data input
data output
supply voltage
74LVT_LVTH244A
All information provided in this document is subject to legal disclaimers.
© Nexperia B.V. 2017. All rights reserved.
Product data sheet
Rev. 5 — 16 August 2017
3 / 17
Nexperia
74LVT244A; 74LVTH244A
3.3 V octal buffer/line driver; 3-state
6
Functional description
[1]
Table 3. Function table
Control
nOE
L
L
H
[1]
H = HIGH voltage level;
L = LOW voltage level;
X = don’t care;
Z = high-impedance OFF-state.
Input
nAn
L
H
X
Output
nYn
L
H
Z
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 Parameter
V
CC
V
I
V
O
I
IK
I
OK
I
O
T
stg
T
j
P
tot
[1]
[2]
[3]
Conditions
[1]
Min
-0.5
-0.5
-0.5
-50
-50
-
-64
-65
[2]
Max
+4.6
+7.0
+7.0
-
-
128
-
+150
150
500
Unit
V
V
V
mA
mA
mA
mA
°C
°C
mW
supply voltage
input voltage
output voltage
input clamping current
output clamping current
output current
storage temperature
junction temperature
total power dissipation
T
amb
= -40 to +85 °C
[3]
output in OFF-state or HIGH-state
V
I
< 0 V
V
O
< 0 V
output in LOW-state
output in HIGH-state
[1]
-
-
The input and output negative voltage ratings may be exceeded if the input and output clamp current ratings are observed.
The performance capability of a high-performance integrated circuit in conjunction with its thermal environment can create junction temperatures which
are detrimental to reliability.
For SO20 packages: above 70 °C derate linearly with 8 mW/K.
For SSOP20 and TSSOP20 packages: above 60 °C derate linearly with 5.5 mW/K.
For DHVQFN20 packages: above 60 °C derate linearly with 4.5 mW/K.
74LVT_LVTH244A
All information provided in this document is subject to legal disclaimers.
© Nexperia B.V. 2017. All rights reserved.
Product data sheet
Rev. 5 — 16 August 2017
4 / 17
Nexperia
74LVT244A; 74LVTH244A
3.3 V octal buffer/line driver; 3-state
8
Recommended operating conditions
Conditions
Min
2.7
0
-32
none
current duty cycle ≤ 50 %; f
i
≥ 1 kHz
in free-air
outputs enabled
-
-
-40
-
Table 5. Operating conditions
Symbol Parameter
V
CC
V
I
I
OH
I
OL
T
amb
Δt/ΔV
supply voltage
input voltage
HIGH-level output current
LOW-level output current
ambient temperature
input transition rise and fall rate
Typ
-
-
-
-
-
-
-
Max
3.6
5.5
-
32
64
+85
10
Unit
V
V
mA
mA
mA
°C
ns/V
9
Static characteristics
Table 6. Static characteristics
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
Symbol Parameter
T
amb
= -40 °C to +85 °C
V
IK
V
IH
V
IL
V
OH
input clamping voltage
HIGH-level input voltage
LOW-level input voltage
HIGH-level output
voltage
Conditions
V
CC
= 2.7 V; I
IK
= -18 mA
Min
-1.2
2.0
-
Typ
[1]
Max
-
-
0.8
-
-
-
0.2
0.5
0.4
0.5
0.55
10
±1
1
-
±100
-
-75
Unit
V
V
V
V
V
V
V
V
V
V
V
μA
μA
μA
μA
μA
μA
μA
-0.9
-
-
2.5
2.2
0.1
0.3
0.25
0.3
0.4
0.1
±0.1
0.1
-1
1
150
-150
V
CC
= 2.7 V to 3.6 V; I
OH
= -100 μA
V
CC
= 2.7 V to 3.6 V; I
OH
= -8 mA
V
CC
= 3.0 V; I
OH
= -32 mA
V
CC
= 2.7 V; I
OL
= 100 μA
V
CC
= 2.7 V; I
OL
= 24 mA
V
CC
= 3.0 V; I
OL
= 16 mA
V
CC
= 3.0 V; I
OL
= 32 mA
V
CC
= 3.0 V; I
OL
= 64 mA
V
CC
- 0.2 V
CC
- 0.1
2.4
2.0
-
-
-
-
-
-
-
[2]
V
OL
LOW-level output
voltage
I
I
input leakage current
all input pins
V
CC
= 0 V or 3.6 V; V
I
= 5.5 V
control pins
V
CC
= 3.6 V; V
I
= V
CC
or GND
data pins
V
CC
= 3.6 V; V
I
= V
CC
V
CC
= 3.6 V; V
I
= 0 V
-
-5
-
75
-
I
OFF
I
BHL
I
BHH
74LVT_LVTH244A
power-off leakage
current
bus hold LOW current
bus hold HIGH current
V
CC
= 0 V; V
I
or V
O
= 0 V to 4.5 V
V
CC
= 3 V; V
I
= 0.8 V
V
CC
= 3 V; V
I
= 2.0 V
All information provided in this document is subject to legal disclaimers.
© Nexperia B.V. 2017. All rights reserved.
Product data sheet
Rev. 5 — 16 August 2017
5 / 17
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