Datasheet

UNISONIC TECHNOLOGIES CO., LTD
U74HCT3G34
CMOS IC
TRIPLE BUFFER GATE

DESCRIPTION
The U74HCT3G34 provides three buffers, it is compatible with
TTL.

MSOP-8
FEATURES
* Low power dissipation
* High speed
* High noise immunity

ORDERING INFORMATION
Ordering Number
U74HCT3G34G-P08-R
U74HCT3G34G-SM1-R

TSSOP-8
Package
TSSOP-8
MSOP-8
Packing
Tape Reel
Tape Reel
MARKING
MSOP-8
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Copyright © 2016 Unisonic Technologies Co., Ltd
TSSOP-8
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U74HCT3G34
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
CMOS IC
PIN CONFIGURATION
1A
1
8
VCC
3Y
2
7
1Y
2A
3
6
3A
GND
4
5
2Y
FUNCTION TABLE (each gate)
INPUT
A
L
H

OUTPUT
Y
L
H
LOGIC DIAGRAM (positive logic)
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U74HCT3G34

CMOS IC
ABSOLUTE MAXIMUM RATINGS (unless otherwise specified)
PARAMETER
SYMBOL
RATINGS
UNIT
Supply Voltage
VCC
-0.5~7
V
Output Voltage
VOUT
-0.5~VCC+0.5
V
Output Current
IOUT
25
mA
VCC or GND Current
ICC
50
mA
Input Clamp Current
IIK
±20
mA
Output Clamp Current
IOK
±20
mA
Power Dissipation
PD
300
mW
Storage Temperature
TSTG
-65 ~ +150
°C
Note: 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 CONDITIONS
PARAMETER
Supply Voltage
Input Voltage
Output Voltage
Input Rise and Fall Times
Operating Temperature

SYMBOL
CONDITIONS
VCC
VIN
VOUT
tR, tF
VCC=4.5V
TA
High-Level Output Voltage
Low-Level Output Voltage
Input Leakage Current
MAX
5.5
VCC
VCC
500
+125
UNIT
V
V
V
ns
°C
MAX
0.1
0.33
±1.0
UNIT
V
V
V
V
V
V
μA
VCC=5.5V, IOUT=0, VIN=VCC or GND
10
μA
VCC=5.5V, VIN=VCC -2.1V; IOUT=0
375
μA
SYMBOL
TEST CONDITIONS
VIH
VCC=4.5V~5.5V
VIL
VCC=4.5V~5.5V
VCC=4.5V, IOH=-20μA
VOH
VCC=4.5V, IOH=-4.0mA
VCC=4.5V, IOL=20μA
VOL
VCC=4.5V, IOL =4.0mA
II(LEAK) VCC=5.5V, VIN=VCC or GND
Quiescent Supply Current
Additional Quiescent Supply
Current
Input Capacitance
IQ
 IQ
6.0
-40
MIN
2.0
4.4
4.13
CIN
TYP
1.6
1.2
4.5
4.32
0
0.15
0.8
1.5
pF
DYNAMIC CHARACTERISTICS (TA=25°C, tR, tF≤6.0ns)
PARAMETER
SYMBOL
TEST CONDITIONS
Propagation Delay From nA to nY tPHL /tPLH VCC=4.5V, CL=50 pF
Output Transition Time
tTHL /tTLH VCC=4.5V, CL=50 pF

TYP
5.0
STATIC CHARACTERISTICS (TA=25°C)
PARAMETER
High-Level Input Voltage
Low-Level Input Voltage

MIN
4.5
0
0
MIN
TYP
10
6
MAX
23
19
UNIT
ns
ns
MIN
TYP
9
MAX
UNIT
pF
OPERATING CHARACTERISTICS
PARAMETER
Power Dissipation Capacitance per Gate
SYMBOL
Cpd
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www.unisonic.com.tw
TEST CONDITION
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U74HCT3G34
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CMOS IC
T TEST CIRCUIT AND WAVEFORMS
Note: CL includes probe and jig capacitance.
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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www.unisonic.com.tw
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