UNISONIC TECHNOLOGIES CO., LTD
U74AHC1G126
Preliminary
CMOS IC
SINGLE BUS BUFFER GATE
WITH 3-STATE OUTPUT
DESCRIPTION
The
U74AHC1G126
is a single bus buffer gate/line driver with
3-state output. When OE is low, the Y output are in a
high-impedance state. When OE is high, the device passes
noninverted data from the A input to the Y output.
To ensure the high-impedance state during power up or power
down, OE should be tied to GND through a pull-down resistor; the
minimum value of the resistor is determined by the current-sinking
capability of the driver.
FEATURES
* Wide supply voltage range from 2V to 5.5V
* Max t
pd
of 6 ns from A to Y at 5V
* Low power consumption, I
CC
= 1
μA
(Max.) at 5.5V
* ±8 mA output driver at 5V
ORDERING INFORMATION
Order Number
Normal
Lead Free Plating
U74AHC1G126L-AL5-R
U74AHC1G126G-AL5-R
Package
SOT-353
Packing
Tape Reel
www.unisonic.com.tw
Copyright © 2012 Unisonic Technologies Co., Ltd
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QW-R502-782.a
U74AHC1G126
PIN CONFIGURATION
Preliminary
CMOS IC
FUNCTION TABLE
INPUT
OE
H
H
L
A
H
L
X
OUTPUT
Y
H
L
Z
LOGIC DIAGRAM
(positive logic)
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ABSOLUTE MAXIMUM RATING
PARAMETER
Preliminary
CMOS IC
SYMBOL
RATINGS
UNIT
Supply Voltage Range
V
CC
-0.5~7
V
Input Voltage Range
V
IN
-0.5~7
V
Output Voltage Range
V
OUT
-0.5~V
CC
+0.5
V
Input Clamp Current (V
IN
<0)
I
IK
-20
mA
Output Clamp Current (V
OUT
<0, or V
OUT
>V
CC
)
I
OK
±20
mA
Output Current
I
OUT
±25
mA
V
CC
or GND Current
I
CC
±50
mA
θ
JA
°C /W
Package Thermal Impedance
250
Storage Temperature
T
STG
-65 ~ +150
°C
Note: 1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
2. Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
RECOMMENDED OPERATING COMDITIONS
PARAMETER
Supply Voltage
High-Level Input Voltage
SYMBOL
V
CC
V
IH
V
CC
= 2V
V
CC
= 3V
V
CC
= 5.5V
V
CC
= 2V
V
CC
= 3V
V
CC
= 5.5V
CONDITIONS
MIN
2
1.5
2.1
3.85
MAX
5.5
UNIT
V
V
0.5
0.9
1.65
5.5
V
CC
-50
-4
-8
50
4
8
100
20
85
Low-Level Input Voltage
Input Voltage
Output Voltage
High-level Output Current
V
IL
V
IN
V
OUT
I
OH
V
V
V
μA
mA
μA
mA
ns/V
°C
0
0
V
CC
= 2V
V
CC
= 3.3±0.3V
V
CC
= 5±0.5V
V
CC
= 2V
V
CC
= 3.3±0.3V
V
CC
= 5±0.5V
V
CC
= 3.3±0.3V
V
CC
= 5±0.5V
-40
Low-level Output Current
Input Transition Rise or Fall Rate
Operating Temperature
I
OL
Δt/Δv
T
A
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PARAMETER
SYMBOL
Preliminary
CMOS IC
ELECTRICAL CHARACTERISTICS
(T
A
=25°C , unless otherwise specified)
TEST CONDITIONS
I
OH
= -50
μA,
V
CC
= 2V
I
OH
= -50
μA,
V
CC
= 3V
I
OH
= -50
μA,
V
CC
= 4.5V
I
OH
= -4 mA, V
CC
= 3V
I
OH
= -8 mA, V
CC
= 4.5V
I
OH
= 50
μA,
V
CC
= 2V
I
OH
= 50
μA,
V
CC
= 3V
I
OH
= 50
μA,
V
CC
= 4.5V
I
OH
= 4 mA, V
CC
= 3V
I
OH
= 8 mA, V
CC
= 4.5V
V
IN
= 5.5V or GND, V
CC
= 0 to 5.5V
V
IN
= V
CC
or GND, V
CC
= 5.5V
V
IN
= V
CC
or GND, I
OUT
= 0, V
CC
= 5.5V
V
IN
= V
CC
or GND, V
CC
=5V
V
O
= V
CC
or GND, V
CC
=5V
MIN
1.9
2.9
4.4
2.58
3.94
TYP
2
3
4.5
MAX
UNIT
High-Level Output Voltage
V
OH
V
Low-Level Output Voltage
V
OL
0.1
0.1
0.1
0.36
0.36
±0.1
±0.25
1
10
V
Input Leakage Current
(A or OE input)
High-impedance state Current
Quiescent Supply Current
Input Capacitance
Output Capacitance
I
I(LEAK)
I
OZ
I
CC
C
IN
C
OUT
μA
μA
μA
pF
pF
4
10
SWITCHING CHARACTERISTICS
(V
CC
= 3.3V ± 0.3V, T
A
=25°C)
PARAMETER
Propagation delay from input A to
output Y, t
pd
SYMBOL
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
TEST CONDITIONS
C
L
=15pF, R
L
=1kΩ
C
L
=50pF, R
L
=1kΩ
C
L
=15pF, R
L
=1kΩ
C
L
=50pF, R
L
=1kΩ
C
L
=15pF, R
L
=1kΩ
C
L
=50pF, R
L
=1kΩ
C
L
=15pF, R
L
=1kΩ
C
L
=50pF, R
L
=1kΩ
C
L
=15pF, R
L
=1kΩ
C
L
=50pF, R
L
=1kΩ
C
L
=15pF, R
L
=1kΩ
C
L
=50pF, R
L
=1kΩ
MIN
TYP
5.6
8.1
5.6
8.1
5.4
7.9
5.4
7.9
7
9.5
7
9.5
MAX
8
11.5
8
11.5
8
11.5
8
11.5
9.7
13.2
9.7
13.2
UNIT
ns
ns
ns
ns
ns
ns
Propagation delay from input OE to
output Y, t
en
Propagation delay from input OE to
output Y, t
dis
SWITCHING CHARACTERISTICS
(V
CC
= 5V ± 0.5V, T
A
=25°C)
PARAMETER
Propagation delay from input A to
output Y, t
pd
SYMBOL
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
TEST CONDITIONS
C
L
=15pF, R
L
=1kΩ
C
L
=50pF, R
L
=1kΩ
C
L
=15pF, R
L
=1kΩ
C
L
=50pF, R
L
=1kΩ
C
L
=15pF, R
L
=1kΩ
C
L
=50pF, R
L
=1kΩ
C
L
=15pF, R
L
=1kΩ
C
L
=50pF, R
L
=1kΩ
C
L
=15pF, R
L
=1kΩ
C
L
=50pF, R
L
=1kΩ
C
L
=15pF, R
L
=1kΩ
C
L
=50pF, R
L
=1kΩ
MIN
TYP
3.8
5.3
3.8
5.3
3.6
5.1
3.6
5.1
4.6
6.1
4.6
6.1
MAX
5.5
7.5
5.5
7.5
5.1
7.1
5.1
7.1
6.8
8.8
6.8
8.8
UNIT
ns
ns
ns
ns
ns
ns
Propagation delay from input OE to
output Y, t
en
Propagation delay from input OE to
output Y, t
dis
OPERATING CHARACTERISTICS
(T
A
=25°C , unless otherwise specified)
PARAMETER
Power dissipation capacitance
SYMBOL
C
pd
TEST CONDITIONS
V
CC
= 5V, f=1MHz, No load
TYP
14
UNIT
pF
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U74AHC1G126
TEST CIRCUIT AND WAVEFORMS
Preliminary
CMOS IC
TEST
t
PLH
/t
PHL
t
PLZ
/t
PZL
t
PHZ
/t
PZH
S1
Open
V
LOAD
GND
V
CC
3.3V±0.3V
5V±0.5V
Input
V
IN
V
CC
V
CC
t
r
, t
f
≤3ns
≤3ns
V
M
V
CC
/2
V
CC
/2
V
LOAD
V
CC
V
CC
C
L
15pF
50pF
15pF
50pF
R
L
1kΩ
1kΩ
V
Δ
0.3V
0.5V
V
IN
Input
V
M
V
M
0V
t
PLH
t
PHL
V
OH
Output
V
M
V
OL
t
PHL
t
PLH
V
OH
V
M
Output
V
M
V
OL
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