Datasheet

UNISONIC TECHNOLOGIES CO., LTD
U74LVC2G157
CMOS IC
SINGLE 2-LINE TO 1-LINE
DATA SELECTOR OR
MULTIPLEXER
„
DESCRIPTION
The U74LVC2G157 is a single 2-line to 1-line data selector or
multiplexer which is featured a common strobe ( G ) input. When the
strobe is high, the output Y is low and Y is high regardless of the
levels of other inputs. When the strobe is low, a single bit is selected
from one of two sources and is transferred to the output with the true
and complementary data.
This device has power-down protective circuit, preventing
device destruction when it is powered down.
„
SOP-8
FEATURES
* Operate from 1.65V to 5.5V
* Inputs accept voltages to 5.5V
* Ioff supports partial-power-down mode
* Low power dissipation: ICC=10μA(Max.)
* ±24mA output drive(VCC=3.3V)
* Max tpd at 6ns of 3.3V
„
ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
U74LVC2G157L-S08-T
U74LVC2G157G-S08-T
U74LVC2G157L-S08-R
U74LVC2G157G-S08-R
www.unisonic.com.tw
Copyright © 2012 Unisonic Technologies Co., Ltd
Package
Packing
SOP-8
SOP-8
Tube
Tape Reel
1 of 5
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U74LVC2G157
„
PIN CONFIGURATION
„
FUNCTION TABLE (EACH GATE)
CMOS IC
INPUTS
OUTPUT
A
B
Y
G
A/B
Y
H
X
X
X
L
H
L
L
L
X
L
H
L
L
H
X
H
L
L
H
X
L
L
H
L
H
X
H
H
L
Note: H: HIGH voltage level; L: LOW voltage level; X: Don’t care
„
LOGIC DIAGRAM (positive logic)
G
A/B
A
7
6
1
5
B
2
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
3
Y
Y
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U74LVC2G157
„
CMOS IC
ABSOLUTE MAXIMUM RATING
PARAMETER
SYMBOL
VCC
VIN
Supply Voltage
Input Voltage
RATINGS
-0.5 ~ +6.5
-0.5 ~ +6.5
-0.5 ~ VCC+0.5
Output in the high or low state
VOUT
Output in the high-impedance or
-0.5 ~ +6.5
power-off state
VCC or GND Current
ICC
±100
Continuous Output Current (VOUT=0 to VCC)
IOUT
±50
Input Clamp Current (VIN<0)
IIK
-50
Output Clamp Current (VOUT<0 )
IOK
-50
Storage Temperature Range
TSTG
-65 ~ +150
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.
Output Voltage
„
UNIT
V
V
V
V
mA
mA
mA
mA
°C
RECOMMENDED OPERATING CONDITIONS
PARAMETER
SYMBOL
Supply Voltage
VCC
Input Voltage
Output Voltage
VIN
VOUT
High-Level Input Voltage
VIH
Low-Level Input Voltage
VIL
High-level Output Current
IOH
Low-level Output Current
IOL
Input Transition Rise or Fall
Rate
Δt/Δv
Operating Temperature
TEST CONDITIONS
Operating
Data retention only
VCC =1.65V~1.95V
VCC =2.3V~2.7V
VCC =3.0V~3.6V
VCC =4.5V~5.5V
VCC =1.65V~1.95V
VCC =2.3V~2.7V
VCC =3.0V~3.6V
VCC =4.5V~5.5V
VCC=1.65V
VCC=2.3V
VCC=3.0V
VCC=3.0V
VCC=4.5V
VCC=1.65V
VCC=2.3V
VCC=3.0V
VCC=3.0V
VCC=4.5V
VCC=1.65V~1.95V, 2.3V~2.7V
VCC=3.0V~3.6V
VCC=4.5V~5.5V
TA
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
MIN
1.65
1.5
0
0
0.65*VCC
1.7
2
0.7*VCC
-40
TYP
MAX
5.5
UNIT
V
V
V
V
5.5
VCC
V
0.35*VCC
0.7
0.8
0.3*VCC
-4
-8
-16
-24
-32
4
8
16
24
32
20
10
5
85
V
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
ns/V
ns/V
ns/V
°C
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ELECTRICAL CHARACTERISTICS (TA =25°C , unless otherwise specified)
PARAMETER
High-Level Output Voltage
Low-Level Output Voltage
Input Leakage Current
Power OFF Leakage Current
Quiescent Supply Current
Additional Quiescent Supply
Current
Input Capacitance
„
CMOS IC
SYMBOL
VOH
VOL
II(LEAK)
IOFF
IQ
ΔIQ
CIN
MIN
VCC-0.1
1.2
1.9
2.2
2.3
3.8
TYP
MAX
UNIT
V
0.1
0.45
VCC =2.3V, IOH=8mA
0.3
VCC =3.0V, IOH=16mA
VCC =3.0V, IOH=24mA
VCC =4.5V, IOH=32mA
VCC =0V~5.5V, VIN=5.5V or GND
VCC =0V, VIN or VOUT=5.5V
VCC =1.65V~5.5V,
VIN=5.5V or GND, IOUT=0
VCC =3V~5.5V, One input at VCC-0.6V,
other inputs at VCC or GND
VCC =3.3V, VIN=VCC or GND
0.4
0.55
0.55
±5
±10
μA
μA
10
μA
500
μA
5
V
pF
SWITCHING CHARACTERISTICS (TA =25°C , unless otherwise specified)
PARAMETER
SYMBOL
Propagation delay from input
tPLH/tPHL
(A or B) to output(Y or Y )
Propagation delay from input
( A/B) to output(Y or Y )
tPLH/tPHL
Propagation delay from input
( G ) to output(Y or Y )
tPLH/tPHL
„
TEST CONDITIONS
VCC =1.65V~5.5V, IOH=-100μA
VCC =1.65V, IOH=-4mA
VCC =2.3V, IOH=-8mA
VCC =3.0V, IOH=-16mA
VCC =3.0V, IOH=-24mA
VCC =4.5V, IOH=-32mA
VCC =1.65V~5.5V, IOH=-100μA
VCC =1.65V, IOH=4mA
TEST CONDITIONS
VCC =1.65V~1.95V
VCC =2.3V~2.7V
VCC =3.0V~3.6V
VCC =4.5V~5.5V
VCC =1.65V~1.95V
VCC =2.3V~2.7V
VCC =3.0V~3.6V
VCC =4.5V~5.5V
VCC =1.65V~1.95V
VCC =2.3V~2.7V
VCC =3.0V~3.6V
VCC =4.5V~5.5V
MIN
4.4
2.1
2
1.4
4.9
2.5
2.1
1.6
4.2
2
1.6
1.3
TYP
MAX
14
8
6
4
16
9
6
4
14
8
6
4
UNIT
MAX
UNIT
pF
pF
pF
pF
ns
ns
ns
OPERATING CHARACTERISTICS (TA =25°C , unless otherwise specified)
PARAMETER
Power Dissipation
Capacitance
SYMBOL
Cpd
TEST CONDITIONS
VCC=1.8V, f=10MHz
VCC=2.5V, f=10MHz
VCC=3.3V, f=10MHz
VCC=5V, f=10MHz
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
MIN
TYP
35
35
37
40
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„
CMOS IC
TEST CIRCUIT AND WAVEFORMS
From Output
CL
RL
TEST CIRCUIT
VCC
VCC =1.65V~1.95V
VCC =2.3V~2.7V
VCC =3.0V~3.6V
VCC =4.5V~5.5V
Inputs
VIN
VCC
VCC
3.0V
VCC
tR, tF
≤2ns
≤2ns
≤2.5ns
≤2.5ns
VM
CL
RL
VCC/2
VCC/2
1.5V
VCC/2
30pF
30pF
50pF
50pF
1KΩ
500Ω
500Ω
500Ω
Note: 1. CL includes probe and jig capacitance.
2. All input pulses are supplied by generators having the following characteristics: PRR ≤10MHz, Zo = 50Ω.
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.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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