74LV244
Octal buffer/line driver; 3-state
Rev. 4 — 1 March 2016
Product data sheet
1. General description
The 74LV244 is a low-voltage Si-gate CMOS device and is pin and function compatible
with 74HC244 and 74HCT244.
The 74LV244 is an octal non-inverting buffer/line driver with 3-state outputs. The output
enable inputs 1OE and 2OE control the 3-state outputs. A HIGH on nOE causes the
outputs to assume a high impedance OFF-state. The 74LV244 is identical to the 74LV240
but has non-inverting outputs.
2. Features and benefits
Wide operating voltage: 1.0 V to 5.5 V
Optimized for low voltage applications: 1.0 V to 3.6 V
Accepts TTL input levels between V
CC
= 2.7 V and V
CC
= 3.6 V
Typical V
OLP
(output ground bounce) < 0.8 V at V
CC
= 3.3 V; T
amb
= 25
C
Typical V
OHV
(output V
OH
undershoot) > 2 V at V
CC
= 3.3 V; T
amb
= 25
C
Complies with JEDEC standard no. 7A
Multiple package options
ESD protection:
HBM JESD22-A114F exceeds 2000 V
MM JESD22-A115-A exceeds 200 V
3. Ordering information
Table 1.
Ordering information
Package
Temperature range
74LV244D
74LV244DB
74LV244PW
40 C
to +125
C
40 C
to +125
C
40 C
to +125
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
TSSOP20 plastic thin shrink small outline package; 20 leads;
body width 4.4 mm
Nexperia
74LV244
Octal buffer/line driver; 3-state
4. Block diagram
Fig 1.
Functional diagram
Fig 2.
Logic symbol
Fig 3.
IEC logic symbol
74LV244
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 4 — 1 March 2016
2 of 15
Nexperia
74LV244
Octal buffer/line driver; 3-state
5. Pinning information
5.1 Pinning
Fig 4.
Pin configuration SO20, SSOP20 and TSSOP20
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
3, 5, 7, 9
10
17, 15, 13, 11
18, 16, 14, 12
20
Description
output enable input (active LOW)
data input
bus output
ground (0 V)
data input
bus output
supply voltage
6. Functional description
Table 3.
Input
nOE
L
L
H
[1]
Function table
[1]
Output
nAn
L
H
X
nYn
L
H
Z
H = HIGH voltage level; L = LOW voltage level; X = don’t care; Z = high-impedance OFF-state.
74LV244
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 4 — 1 March 2016
3 of 15
Nexperia
74LV244
Octal buffer/line driver; 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).
Symbol
V
CC
I
IK
I
OK
I
O
I
CC
I
GND
T
stg
P
tot
Parameter
supply voltage
input clamping current
output clamping current
output current
supply current
ground current
storage temperature
total power dissipation
T
amb
=
40 C
to +125
C
SO20
SSOP20 and TSSOP20
[1]
[2]
For SO20 packages: P
tot
derates linearly with 8 mW/K above 70
C.
For SSOP20 and TSSOP20 packages: P
tot
derates linearly with 5.5 mW/K above 60
C.
[1]
[2]
Conditions
V
I
<
0.5
V or V
I
> V
CC
+ 0.5 V
V
O
<
0.5
V or V
O
> V
CC
+ 0.5 V
0.5
V < V
O
< V
CC
+ 0.5 V
Min
0.5
-
-
-
-
70
65
-
-
Max
+7.0
20
50
35
70
-
+150
500
400
Unit
V
mA
mA
mA
mA
mA
C
mW
mW
8. Recommended operating conditions
Table 5.
Symbol
V
CC
V
I
V
O
T
amb
t/V
Operating conditions
Parameter
supply voltage
input voltage
output voltage
ambient temperature
input transition rise and fall V
CC
= 1.0 V to 2.0 V
rate
V
CC
= 2.0 V to 2.7 V
V
CC
= 2.7 V to 3.6 V
V
CC
= 3.6 V to 5.5 V
[1]
Conditions
[1]
Min
1.0
0
0
40
40
0
0
0
0
Typ
3.3
-
-
-
-
-
-
-
-
Max
5.5
V
CC
V
CC
+85
+125
500
200
100
50
Unit
V
V
V
C
C
ns/V
ns/V
ns/V
ns/V
The LV is guaranteed to function down to V
CC
= 1.0 V (input levels GND or V
CC
). DC characteristics are guaranteed from V
CC
= 1.2 V to
V
CC
= 5.5 V.
74LV244
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 4 — 1 March 2016
4 of 15
Nexperia
74LV244
Octal buffer/line driver; 3-state
9. Static characteristics
Table 6.
Static characteristics
Over recommended operating conditions. Voltages are referenced to GND (ground = 0 V).
Symbol Parameter
V
IH
HIGH level
input voltage
Conditions
V
CC
= 1.2 V
V
CC
= 2.0 V
V
CC
= 2.7 V to 3.6 V
V
CC
= 4.5 V to 5.5 V
V
IL
LOW level
input voltage
V
CC
= 1.2 V
V
CC
= 2.0 V
V
CC
= 2.7 V to 3.6 V
V
CC
= 4.5 V to 5.5 V
V
OH
HIGH level
V
I
= V
IH
or V
IL
; I
O
=
100 A
output voltage
V
CC
= 1.2 V
V
CC
= 2.0 V
V
CC
= 2.7 V
V
CC
= 3.0 V
V
CC
= 4.5 V
V
I
= V
IH
or V
IL
V
CC
= 3.0 V; I
O
=
8
mA
V
CC
= 4.5 V; I
O
=
16
mA
V
OL
LOW level
V
I
= V
IH
or V
IL
; I
O
= 100
A
output voltage
V
CC
= 1.2 V
V
CC
= 2.0 V
V
CC
= 2.7 V
V
CC
= 3.0 V
V
CC
= 4.5 V
V
CC
= 3.0 V; I
O
= 8 mA
V
CC
= 4.5 V; I
O
= 16 mA
I
I
I
OZ
input leakage
current
3-State output
OFF-state
current
V
CC
= 5.5 V; V
I
= V
CC
or GND
V
CC
= 3.6 V; V
I
= V
IH
or V
IL
;
V
O
= V
CC
or GND
2.40
3.60
-
-
-
-
-
-
-
-
-
2.82
4.20
0
0
0
0
0
0.25
0.35
-
-
-
-
-
0.2
0.2
0.2
0.2
0.40
0.55
1.0
5
2.20
3.50
-
-
-
-
-
-
-
-
-
-
-
-
0.2
0.2
0.2
0.2
0.50
0.65
1.0
10
V
V
V
V
V
V
V
V
V
A
A
40 C
to +85
C
Min
0.9
1.4
2.0
0.7V
CC
-
-
-
-
-
1.8
2.5
2.8
4.3
Typ
[1]
-
-
-
-
-
-
-
-
1.2
2.0
2.7
3.0
4.5
Max
-
-
-
-
0.3
0.6
0.8
0.3V
CC
-
-
-
-
-
-
1.8
2.5
2.8
4.3
40 C
to +125
C
Min
0.9
1.4
2.0
0.7V
CC
0.3
0.6
0.8
0.3V
CC
-
-
-
-
-
Max
V
V
V
V
V
V
V
V
V
V
V
V
V
Unit
I
CC
I
CC
C
I
supply current V
CC
= 5.5 V; V
I
= V
CC
or GND;
I
O
= 0 A
additional
per input; V
CC
= 2.7 V to 3.6 V;
supply current V
I
= V
CC
0.6 V
input
capacitance
All typical values are measured at T
amb
= 25
C.
-
-
-
-
-
3.5
20
500
-
-
-
-
160
850
-
A
A
pF
[1]
74LV244
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
Rev. 4 — 1 March 2016
5 of 15
微控制器 MCU
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