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74LVT2244
3.3 V octal buffer/line driver with 30
termination resistors;
3-state
Rev. 3 — 1 September 2016
Product data sheet
1. General description
The 74LVT2244 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.
The 74LVT2244 is designed with 30
series resistance in both the HIGH and LOW states
of the output. This design reduces line noise in applications such as memory address
drivers, clock drivers, and bus receivers/transmitters.
2. Features and benefits
Octal bus interface
3-state buffers
Output capability: +12 mA and
12
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
Power-up 3-state
Live insertion and extraction permitted
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
Table 1.
Ordering information
Package
Temperature range
74LVT2244D
74LVT2244DB
40 C
to +85
C
40 C
to +85
C
Name
SO20
SSOP20
Description
plastic shrink small outline package; 20 leads;
body width 5.3 mm
Version
SOT339-1
SOT360-1
plastic small outline package; 20 leads; body width 7.5 mm SOT163-1
Type number
74LVT2244PW
40 C
to +85
C
TSSOP20 plastic thin shrink small outline package; 20 leads;
body width 4.4 mm
NXP Semiconductors
74LVT2244
3.3 V octal buffer/line driver with 30
termination resistors; 3-state
4. Functional diagram
Fig 1.
Logic symbol
Fig 2.
IEC logic symbol
Fig 3.
Output schematic (one output)
74LVT2244
All information provided in this document is subject to legal disclaimers.
© NXP Semiconductors N.V. 2016. All rights reserved.
Product data sheet
Rev. 3 — 1 September 2016
2 of 15
NXP Semiconductors
74LVT2244
3.3 V octal buffer/line driver with 30
termination resistors; 3-state
5. Pinning information
5.1 Pinning
Fig 4.
Pin configuration for SO20 and (T)SSOP20
5.2 Pin description
Table 2.
Symbol
1OE, 2OE
1A0, 1A1, 1A2, 1A3
2Y0, 2Y1, 2Y2, 2Y3
GND
2A0, 2A1, 2A2, 2A3
1Y0, 1Y1, 1Y2, 1Y3,
V
CC
Pin description
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
6. Functional description
6.1 Function table
Table 3.
Control
nOE
L
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.
74LVT2244
All information provided in this document is subject to legal disclaimers.
© NXP Semiconductors N.V. 2016. All rights reserved.
Product data sheet
Rev. 3 — 1 September 2016
3 of 15
NXP Semiconductors
74LVT2244
3.3 V octal buffer/line driver with 30
termination resistors; 3-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).
[1][2]
Symbol
V
CC
V
I
V
O
I
IK
I
OK
I
O
T
stg
T
j
P
tot
[1]
Parameter
supply voltage
input voltage
output voltage
input clamping current
output clamping current
output current
storage temperature
junction temperature
total power dissipation
Conditions
[3]
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
output in OFF-state or HIGH-state
V
I
< 0 V
V
O
< 0 V
output in LOW-state
output in HIGH-state
[3]
-
T
amb
=
40
to +85
C
[4]
Stresses beyond those listed may cause permanent damage to the device. These are stress ratings only and functional operation of the
device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to
absolute-maximum-rated conditions for extended periods may affect device reliability.
The performance capability of a high-performance integrated circuit in conjunction with its thermal environment can create junction
temperatures which are detrimental to reliability. The maximum junction temperature of this integrated circuit should not exceed 150
C.
The input and output negative voltage ratings may be exceeded if the input and output clamp current ratings are observed.
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.
[2]
[3]
[4]
8. Recommended operating conditions
Table 5.
Symbol
V
CC
V
I
I
OH
I
OL
T
amb
t/V
Operating conditions
Parameter
supply voltage
input voltage
HIGH-level output current
LOW-level output current
ambient temperature
in free-air
input transition rise and fall rate outputs enabled
Conditions
Min
2.7
0
-
-
40
-
Typ
-
-
-
-
-
-
Max
3.6
5.5
12
12
+85
10
Unit
V
V
mA
mA
C
ns/V
74LVT2244
All information provided in this document is subject to legal disclaimers.
© NXP Semiconductors N.V. 2016. All rights reserved.
Product data sheet
Rev. 3 — 1 September 2016
4 of 15
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