RD74LVC126B
Quad. Bus Buffer Gates with 3-state Outputs
REJ03D0499–0200
Rev.2.00
Dec. 10, 2004
Description
The RD74LVC126B has four bus buffer gates in a 14 pin package. The device requires the three state control input OE
to be taken low to put the output into the high impedance condition. Low voltage and high-speed operation is suitable
at the battery drive product (note type personal computer) and low power consumption extends the life of a battery for
long time operation.
Features
V
CC
= 1.65 V to 5.5 V
All inputs V
IH
(Max.) = 5.5 V (@V
CC
= 0 V to 5.5 V)
All outputs V
OUT
(Max.) = 5.5 V (@V
CC
= 0 V or output off state)
Typical V
OL
ground bounce < 0.8 V (@V
CC
= 3.3 V, Ta = 25°C)
Typical V
OH
undershoot > 2.0 V (@V
CC
= 3.3 V, Ta = 25°C)
High output current ±4 mA (@V
CC
= 1.65 V)
±8 mA (@V
CC
= 2.3 V)
±12 mA (@V
CC
= 2.7 V)
±24 mA (@V
CC
= 3.0 V to 5.5 V)
•
Ordering Information
Part Name
RD74LVC126BFPEL
RD74LVC126BTELL
Package Type
SOP–14 pin (JEITA)
TSSOP–14 pin
Package Code
FP–14DAV
TTP–14DV
Package
Abbreviation
FP
T
Taping Abbreviation
(Quantity)
EL (2,000 pcs/reel)
ELL (2,000 pcs/reel)
•
•
•
•
•
•
Function Table
Inputs
OE
L
H
H
H:
L:
X:
Z:
High level
Low level
Immaterial
High impedance
X
L
H
A
Z
L
H
Outputs Y
Rev.2.00 Dec. 10, 2004 page 1 of 8
RD74LVC126B
Pin Arrangement
1OE 1
1A
1Y
2
3
14 V
CC
13 4OE
12 4A
11 4Y
10 3OE
9 3A
8
3Y
2OE 4
2A
2Y
GND
5
6
7
(Top view)
Absolute Maximum Ratings
Item
Supply voltage
Input diode current
Input voltage
Output diode current
Output voltage
Output current
V
CC
, GND current / pin
Storage temperature
Symbol
V
CC
I
IK
V
I
I
OK
V
O
I
O
I
CC
or I
GND
Tstg
–0.5 to 7.0
–50
–0.5 to 7.0
–50
50
–0.5 to V
CC
+0.5
–0.5 to 7.0
±50
±100
–65 to +150
mA
mA
°C
V
Ratings
V
mA
V
mA
V
O
= –0.5 V
V
O
= V
CC
+0.5 V
Output "H" or "L"
Output "Z" or V
CC
: OFF
V
I
= –0.5 V
Unit
Conditions
Note: 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.
Rev.2.00 Dec. 10, 2004 page 2 of 8
RD74LVC126B
Recommended Operating Conditions
Item
Supply voltage
Input / output voltage
Symbol
V
CC
V
I
V
O
Operating temperature
Output current
Ta
I
OH
Ratings
1.5 to 5.5
1.65 to 5.5
0 to 5.5
0 to V
CC
0 to 5.5
–40 to 85
–4
–8
–12
–24
I
OL
4
8
12
24
Input rise / fall time
Note:
*1
Unit
V
V
V
°C
mA
Data hold
Conditions
At operation
Output "H" or "L"
Output "Z" or V
CC
: OFF
V
CC
= 1.65 V
V
CC
= 2.3 V
V
CC
= 2.7 V
V
CC
= 3.0 V to 5.5 V
mA
V
CC
= 1.65 V
V
CC
= 2.3 V
V
CC
= 2.7 V
V
CC
= 3.0 V to 5.5 V
t
r
, t
f
20
10
ns/V
V
CC
= 1.65 V to 2.7 V
V
CC
= 3.0 V to 5.5 V
1. This item guarantees maximum limit when one input switches.
Waveform: Refer to test circuit of switching characteristics.
Rev.2.00 Dec. 10, 2004 page 3 of 8
RD74LVC126B
Electrical Characteristics
Ta = –40 to 85°C
Item
Input voltage
Symbol
V
IH
V
CC
(V)
1.65 to 1.95
2.3 to 2.7
2.7 to 3.6
4.5 to 5.5
V
IL
1.65 to 1.95
2.3 to 2.7
2.7 to 3.6
4.5 to 5.5
Output voltage
V
OH
1.65 to 5.5
1.65
2.3
2.7
3.0
3.0
4.5
V
OL
1.65 to 5.5
1.65
2.3
2.7
3.0
4.5
Input current
Output leak current
Off state output current
I
IN
I
OFF
I
OZ
0 to 5.5
0
2.7 to 5.5
2.7 to 3.6
2.7 to 5.5
∆I
CC
2.7 to 3.6
Min
V
CC
×0.65
—
1.7
2.0
V
CC
×0.7
—
—
—
—
V
CC
–0.2
1.2
1.7
2.2
2.4
2.2
3.8
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
V
CC
×0.35
V
0.7
0.8
V
CC
×0.3
—
—
—
—
—
—
—
0.2
0.45
0.7
0.4
0.55
0.55
±5.0
±5.0
±5.0
±5.0
5.0
500
µA
µA
µA
µA
µA
V
IN
= 5.5 V or GND
V
IN
/ V
OUT
= 5.5 V
V
IN
= V
CC
or GND,
V
OUT
= 5.5 V or GND
V
IN
= 3.6 V to 5.5 V
V
IN
= V
CC
or GND
V
IN
= one input at (V
CC
–0.6) V,
other inputs at V
CC
or GND
V
I
OL
= 100 µA
I
OL
= 4 mA
I
OL
= 8 mA
I
OL
= 12 mA
I
OL
= 24 mA
I
OH
= –24 mA
V
I
OH
= –100 µA
I
OH
= –4 mA
I
OH
= –8 mA
I
OH
= –12 mA
Max
V
Unit
Test Conditions
Quiescent supply current I
CC
Rev.2.00 Dec. 10, 2004 page 4 of 8
RD74LVC126B
Switching Characteristics
Ta = –40 to 85°C
Item
Propagation delay time
Symbol
t
PLH
t
PHL
V
CC
(V)
1.8±0.15
2.5±0.2
2.7
3.3±0.3
5.0±0.5
Output enable time
t
ZH
t
ZL
1.8±0.15
2.5±0.2
2.7
3.3±0.3
5.0±0.5
Output disable time
t
HZ
t
LZ
1.8±0.15
2.5±0.2
2.7
3.3±0.3
5.0±0.5
Between output pins skew
*1
From
Unit
ns
A
(Input)
Y
To
(Output)
Min
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.3
1.0
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Typ
Max
9.8
7.2
5.2
4.7
3.7
10.0
8.3
6.3
5.7
4.7
12.6
8.7
6.7
6.0
5.0
—
—
—
1.0
1.0
—
—
pF
pF
ns
ns
ns
OE
Y
OE
Y
t
OSLH
t
OSHL
1.8±0.15
2.5±0.2
2.7
3.3±0.3
5.0±0.5
Input capacitance
Output capacitance
Note:
C
IN
C
O
3.3
3.3
4.0
7.0
1. This parameter is characterized but not tested.
tos
LH
= | t
PLHm
- t
PLHn
|, tos
HL
= | t
PHLm
- t
PHLn
|
Operating Characteristics
Ta = 25°C
Item
Power dissipation
capacitance
Symbol
C
PD
V
CC
(V)
1.8
2.5
3.3
5.0
Min
—
—
—
—
Typ
21
22
23
27
Max
—
—
—
—
pF
Unit
Test conditions
f = 10 MHz
Rev.2.00 Dec. 10, 2004 page 5 of 8
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