UNISONIC TECHNOLOGIES CO., LTD
U74AHCT1G126
SINGLE BUS BUFFER GATE
WITH 3-STATE OUTPUT
3
2
1
CMOS IC
5
DESCRIPTION
The U74AHCT1G126 is a single bus buffer gate with 3-state output
controlled by enable input (OE
)
, When OE is LOW, the output is
disabled.
2
1
4
SOT-25
3
5
4
FEATURES
* Operation Voltage Range: 4.5~5.5V
* Low Power Dissipation:
(10uA Max Icc)
* Inputs are TTL-Voltage Compatible
SOT-353
*Pb-free plating product number:
U74AHCT1G126L
ORDERING INFORMATION
Order Number
Normal
Lead Free Plating
U74AHCT1G126-AF5-R
U74AHCT1G126L-AF5-R
U74AHCT1G126-AL5-R
U74AHCT1G126L-AL5-R
Package
SOT-25
SOT-325
Packing
Tape Reel
Tape Reel
U74AHCT1G126L-AF5-R
(1)Packing Type
(2)Package Type
(3)Lead Plating
(1) R: Tape Reel
(2) AF5: SOT-25, AL5: SOT-353
(3) L: Lead Free Plating, Blank: Pb/Sn
MARKING
3
2
UL6
4
5
1
Lead Plating
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Copyright © 2005 Unisonic Technologies Co., Ltd
1 of 5
QW-R502-096,A
U74AHCT1G126
PIN CONFIGURATION
GND
3
A
2
OE
1
CMOS IC
4
Y
5
V
CC
FUNCTION TABLE
(each gate)
INPUT
OE
H
H
L
A
L
H
X
OUTPUT
Y
L
H
Z
LOGIC DIAGRAM
(positive logic)
1
2
4
Y
OE
A
1
2
OE
4
OE
A
Y
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QW-R502-096,A
U74AHCT1G126
ABSOLUTE MAXIMUM RATINGS
(unless otherwise specified)(Note 1)
PARAMETER
CMOS IC
SYMBOL
RATINGS
UNIT
Supply Voltage
V
CC
-0.5~7
V
Input Voltage
V
IN
-0.5~7
V
Output Voltage
V
OUT
-0.5~V
CC
+0.5
V
Input Clamp Current
I
IK
-20
mA
Output Clamp Current
I
OK
±20
mA
Output Current
I
OUT
±25
mA
V
CC
or GND
Current
I
CC
±50
mA
Storage Temperature
T
STG
-65 ~ +150
℃
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
nput Voltage
Output Voltage
nput Transition Rise or Fall Rate
Operating Temperature
SYMBOL
CONDITIONS
V
CC
V
IN
V
OUT
∆
t/
∆
v
V
CC
=5.0±0.5V
T
A
MIN
4.5
0
0
-40
MIN
2
4.4
3.94
TYP
TYP
MAX
5.5
5.5
V
CC
20
85
MAX
0.8
4.5
0.1
0.36
±0.1
±0.25
1
1.35
4
10
10
UNIT
V
V
V
ns/V
℃
STATIC CHARACTERISTICS
(T
A
=25
℃
)
PARAMETER
SYMBOL
TEST CONDITIONS
High-Level
V
IH
V
CC
=4.5V~5.5V
Input Voltage
V
CC
=4.5V~5.5V
Low-Level
V
IL
V
CC
=4.5V, I
OH
=-50µA
High-Level
V
OH
V
CC
=4.5V, I
OH
=-8mA
Output Voltage
V
CC
=4.5V, I
OL
=50µA
Low-Level
V
OL
V
CC
=4.5V, I
OH
=8mA
Input Leakage Current
I
I(LEAK)
V
CC
=0V~5.5V, V
IN
=V
CC
or GND
Output Current, OFF-state
I
OZ
V
CC
=5.5V, V
OUT
=V
CC
or GND
V
CC
=5.5V, V
IN
=V
CC
or GND
Quiescent Supply Current
I
Q
I
OUT
=0
Additional Quiescent Supply
V
CC
=5.5V, One input at 3.4V,
∆I
CC
Current
Other input at V
CC
or GND
Input Capacitance
C
IN
V
CC
=5V, V
IN
=V
CC
or GND
Output Capacitance
C
OUT
V
CC
=5V, V
OUT
=V
CC
or GND
SYMBOL
t
PLH
Propagation delay from A to Y
t
PHL
t
PZH
Turn-on time OE to Y
t
PZL
t
PHZ
Turn-off time OE to Y
t
PLZ
t
PLH
Propagation delay from A to Y
t
PHL
t
PZH
Turn-on time OE to Y
t
PZL
t
PHZ
Turn-off time OE to Y
t
PLZ
OPERATING CHARACTERISTICS
Power Dissipation Capacitance
Cpd
PARAMETER
TEST CONDITIONS
V
CC
=5V±0.5V, C
L
=15pF
V
CC
=5V±0.5V, C
L
=15pF
V
CC
=5V±0.5V, C
L
=15pF
V
CC
=5V±0.5V, C
L
=50pF
V
CC
=5V±0.5V, C
L
=50pF
V
CC
=5V±0.5V, C
L
=50pF
No load, f=1MHz, V
CC
=5V
UNIT
V
V
V
V
µA
µA
µA
mA
pF
pF
DYNAMIC CHARACTERISTICS
(T
A
=25
℃
, Input: t
R
, t
F
≤3ns;
PRR≤1MHz)
MIN
TYP
3.8
3.8
3.6
3.6
4.6
4.6
5.3
5.3
5.1
5.1
6.1
6.1
14
MAX
5.5
5.5
5.1
5.1
6.8
6.8
7.5
7.5
7.1
7.1
8.8
8.8
UNIT
ns
ns
ns
ns
ns
ns
pF
3 of 5
QW-R502-096,A
UNISONIC TECHNOLOGIES CO., LTD
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U74AHCT1G126
TEST CIRCUIT AND WAVEFORMS
HIGH
CMOS IC
OE
A
Y
V
IN
V
OUT
C
L
3V
1.5V
V
IN
t
PLH
1.5V
t
PHL
GND
1/2 * V
CC
V
OUT
1/2 * V
CC
Note:
C
L
includes probe and jig capacitance.
Fig-1 Propagation delay from A to Y
TEST
GND T
PHZ
/T
PZH
OE
Vi
A
Y
VCC T
PLZ
/T
PZL
1KΩ
R
L
Vo
Vo
E
TEST
T
PHZ
/T
PZH
VCC
T
PLZ
/T
PZL
GND
C
L
Turn-ON
Turn-OFF
Turn-ON
3V
Vo
E
1.5V
1.5V
GND
t
PHZ
V
OH
-0.3V
V
OUT
t
PZH
1/2 * V
CC
t
PLZ
V
OUT
V
OL+
0.3V
t
PZL
1/2 * V
CC
Fig-2 The turn-on and turn-off times.
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www.unisonic.com.tw
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QW-R502-096,A
U74AHCT1G126
CMOS IC
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
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QW-R502-096,A
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