HD74LV126A
Quad. Bus Buffer Gates with 3-state Outputs
REJ03D0316–0300Z
(Previous ADE-205-259A (Z))
Rev.3.00
Jun. 03, 2004
Description
The HD74LV126A features independent line drivers with three state outputs. Each output is disabled when the
associated output enable (OE) input is low. To ensure the high impedance state during power up or power down, OE
should be connected to GND through a pull-down resistor; the minimum value of the resistor is determined by the
current souring capability of the driver. Low-voltage and high-speed operation is suitable for the battery-powered
products (e.g., notebook computers), and the low-power consumption extends the battery life.
Features
•
•
•
•
•
•
•
V
CC
= 2.0 V to 5.5 V operation
All inputs V
IH
(Max.) = 5.5 V (@V
CC
= 0 V to 5.5 V)
All outputs V
O
(Max.) = 5.5 V (@V
CC
= 0 V)
Typical V
OL
ground bounce < 0.8 V (@V
CC
= 3.3 V, Ta = 25°C)
Typical V
OH
undershoot > 2.3 V (@V
CC
= 3.3 V, Ta = 25°C)
Output current ±8 mA (@V
CC
= 3.0 V to 3.6 V), ±16 mA (@V
CC
= 4.5 V to 5.5 V)
Ordering Information
Package Type
SOP–14 pin(JEITA)
SOP–14 pin(JEDEC)
TSSOP–14 pin
Package Code
FP–14DAV
FP–14DNV
TTP–14DV
Package
Abbreviation
FP
RP
T
Taping Abbreviation
(Quantity)
EL (2,000 pcs/reel)
EL (2,500 pcs/reel)
ELL (2,000 pcs/reel)
Part Name
HD74LV126AFPEL
HD74LV126ARPEL
HD74LV126ATELL
Note: Please consult the sales office for the above package availability.
Function Table
Inputs
OE
H
H
L
Note: H:
L:
X:
Z:
High level
Low level
Immaterial
High impedance
A
H
L
X
Output Y
H
L
Z
Rev.3.00 Jun. 03, 2004 page 1 of 9
HD74LV126A
Pin Arrangement
1OE 1
1A 2
1Y 3
2OE 4
2A 5
2Y 6
GND 7
14 V
CC
13 4OE
12 4A
11 4Y
10 3OE
9 3A
8 3Y
(Top view)
Absolute Maximum Ratings
Item
Supply voltage range
Input voltage range*
1
Output voltage range*
1, 2
Input clamp current
Output clamp current
Continuous output current
Continuous current through
V
CC
or GND
Maximum power dissipation at
3
Ta = 25°C (in still air)*
Storage temperature
Symbol
V
CC
V
I
V
O
I
IK
I
OK
I
O
I
CC
or I
GND
P
T
Tstg
Ratings
–0.5 to 7.0
–0.5 to 7.0
–0.5 to V
CC
+ 0.5
–0.5 to 7.0
–20
±50
±35
±70
785
500
–65 to 150
Unit
V
V
V
mA
mA
mA
mA
mW
°C
Conditions
Output: H or L
V
CC
: OFF or Output: Z
V
I
< 0
V
O
< 0 or V
O
> V
CC
V
O
= 0 to V
CC
SOP
TSSOP
Notes: The absolute maximum ratings are values, which must not individually be exceeded, and furthermore, no two of
which may be realized at the same time.
1. The input and output voltage ratings may be exceeded if the input and output clamp-current ratings are
observed.
2. This value is limited to 5.5 V maximum.
3. The maximum package power dissipation was calculated using a junction temperature of 150°C.
Rev.3.00 Jun. 03, 2004 page 2 of 9
HD74LV126A
Recommended Operating Conditions
Item
Supply voltage range
Input voltage range
Output voltage range
Output current
Symbol
V
CC
V
I
V
O
I
OH
Min
2.0
0
0
0
—
—
—
—
—
—
—
—
0
0
0
–40
Max
5.5
5.5
V
CC
5.5
–50
–2
–8
–16
50
2
8
16
200
100
20
85
Unit
V
V
V
µA
mA
Conditions
I
OL
µA
mA
Input transition rise or fall rate
∆t
/∆v
ns/V
H or L
High impedance state
V
CC
= 2.0 V
V
CC
= 2.3 to 2.7 V
V
CC
= 3.0 to 3.6 V
V
CC
= 4.5 to 5.5 V
V
CC
= 2.0 V
V
CC
= 2.3 to 2.7 V
V
CC
= 3.0 to 3.6 V
V
CC
= 4.5 to 5.5 V
V
CC
= 2.3 to 2.7 V
V
CC
= 3.0 to 3.6 V
V
CC
= 4.5 to 5.5 V
Operating free-air temperature
Ta
°C
Note: Unused or floating inputs must be held high or low.
Logic Diagram
1OE
1A
2OE
2A
3OE
3A
4OE
4A
1
2
3
1Y
4
5
10
9
13
12
11
8
6
2Y
3Y
4Y
Rev.3.00 Jun. 03, 2004 page 3 of 9
HD74LV126A
DC Electrical Characteristics
Ta = –40 to 85°C
Item
Input voltage
Symbol
V
IH
V
CC
(V)*
2.0
2.3 to 2.7
3.0 to 3.6
4.5 to 5.5
2.0
2.3 to 2.7
3.0 to 3.6
4.5 to 5.5
Min to Max
2.3
3.0
4.5
Min to Max
2.3
3.0
4.5
0 to 5.5
5.5
5.5
0
3.3
Min
1.5
V
CC
×
0.7
V
CC
×
0.7
V
CC
×
0.7
—
—
—
—
V
CC
– 0.1
2.0
2.48
3.8
—
—
—
—
—
—
—
—
—
Typ
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
3
Max
—
—
—
—
0.5
V
CC
×
0.3
V
CC
×
0.3
V
CC
×
0.3
—
—
—
—
0.1
0.4
0.44
0.55
±1
±5
20
5
—
Unit
V
Test Conditions
V
IL
Output voltage
V
OH
V
V
OL
Input current
Off-state output
current
Quiescent supply
current
Output leakage
current
Input capacitance
I
IN
I
OZ
I
CC
I
OFF
C
IN
µA
µA
µA
µA
pF
I
OH
= –50
µA
I
OH
= –2 mA
I
OH
= –8 mA
I
OH
= –16 mA
I
OL
= 50
µA
I
OL
= 2 mA
I
OL
= 8 mA
I
OL
= 16 mA
V
I
= 5.5 V or GND
V
O
= V
CC
or GND
V
I
= V
CC
or GND, I
O
= 0
V
I
or V
O
= 0 V to 5.5 V
V
I
= V
CC
or GND
Note: For conditions shown as Min or Max, use the appropriate values under recommended operating conditions.
Rev.3.00 Jun. 03, 2004 page 4 of 9
HD74LV126A
Switching Characteristics
V
CC
= 2.5 ± 0.2 V
Ta = 25°C
Item
Propagation
delay time
Enable time
Disable time
Symbol
t
PLH
t
PHL
t
ZH
t
ZL
t
HZ
t
LZ
Min
—
—
—
—
—
—
Typ
7.1
9.2
7.4
9.5
5.7
8.1
Max
13.0
16.5
13.0
16.5
14.7
18.2
Ta = –40 to 85°C
Min
1.0
1.0
1.0
1.0
1.0
1.0
Max
15.5
18.5
15.5
18.5
17.0
20.5
Unit
ns
ns
ns
Test
Conditions
C
L
= 15 pF
C
L
= 50 pF
C
L
= 15 pF
C
L
= 50 pF
C
L
= 15 pF
C
L
= 50 pF
FROM
(Input)
A
OE
OE
TO
(Output)
Y
Y
Y
V
CC
= 3.3 ± 0.3 V
Ta = 25°C
Item
Propagation
delay time
Enable time
Disable time
Symbol
t
PLH
t
PHL
t
ZH
t
ZL
t
HZ
t
LZ
Min
—
—
—
—
—
—
Typ
5.0
6.4
5.1
6.6
4.4
6.1
Max
8.0
11.5
8.0
11.5
9.7
13.2
Ta = –40 to 85°C
Min
1.0
1.0
1.0
1.0
1.0
1.0
Max
9.5
13.0
9.5
13.0
11.5
15.0
Unit
ns
ns
ns
Test
Conditions
C
L
= 15 pF
C
L
= 50 pF
C
L
= 15 pF
C
L
= 50 pF
C
L
= 15 pF
C
L
= 50 pF
FROM
(Input)
A
OE
OE
TO
(Output)
Y
Y
Y
V
CC
= 5.0 ± 0.5 V
Ta = 25°C
Item
Propagation
delay time
Enable time
Disable time
Symbol
t
PLH
t
PHL
t
ZH
t
ZL
t
HZ
t
LZ
Min
—
—
—
—
—
—
Typ
3.5
4.6
3.6
4.6
3.3
4.3
Max
5.5
7.5
5.1
7.1
6.8
8.8
Ta = –40 to 85°C
Min
1.0
1.0
1.0
1.0
1.0
1.0
Max
6.5
8.5
6.0
8.0
8.0
10.0
Unit
ns
ns
ns
Test
Conditions
C
L
= 15 pF
C
L
= 50 pF
C
L
= 15 pF
C
L
= 50 pF
C
L
= 15 pF
C
L
= 50 pF
FROM
(Input)
A
OE
OE
TO
(Output)
Y
Y
Y
Output-skew Characteristics
Ta = 25°C
Item
Output skew
Symbol
t
sk (O)
V
CC
= (V)
2.3 to 2.7
3.0 to 3.6
4.5 to 5.5
Min
—
—
—
Max
2.0
1.5
1.0
Ta = –40 to 85°C
Min
—
—
—
Max
2.0
1.5
1.0
Unit
ns
Note: Skew between any outputs of the same package switching in the same direction. This parameter is warranted
but not production tested.
Operating Characteristics
C
L
= 50 pF
Item
Power dissipation capacitance
Symbol
C
PD
V
CC
= (V)
3.3
5.0
Ta = 25°C
Min
Typ
—
14.4
—
15.9
Max
—
—
Unit
pF
Test Conditions
f = 10 MHz
Rev.3.00 Jun. 03, 2004 page 5 of 9
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