Datasheet

UNISONIC TECHNOLOGIES CO., LTD
U74AHCT1G66
CMOS IC
BILATERAL SWITCH

DESCRIPTION
The U74AHCT1G66 is an analog switch which transmits signals
from pin(Y or Z) to pin (Z or Y) with an active HIGH enable input pin
(E). When pin E is LOW, the switch is turned off.

FEATURES
* Operation voltage range: 4.5~5.5V
* Low power dissipation
* Very low ON-resistance: 26Ω (typ.) at VCC=3.0V
16Ω (typ.) at VCC=4.5V
14Ω (typ.) at VCC=5.5V
* TTL-Voltage Compatible

ORDERING INFORMATION
Ordering Number
U74AHCT1G66G-AF5-R
U74AHCT1G66G-AL5-R

Package
SOT-25
SOT-353
Packing
Tape Reel
Tape Reel
MARKING
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Copyright © 2015 Unisonic Technologies Co., Ltd
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U74AHCT1G66

CMOS IC
PIN CONFIGURATION
VCC
E
4
5
1
Y

SYMBOL
Y
Z
GND
E
VCC
DESCRIPTION
independent input/output
independent output/input
ground
enable input
supply voltage
FUNCTION TABLE (each gate)
INPUT E
H
L

3
GND
PIN DESCRIPTION
PIN NO.
1
2
3
4
5

2
Z
SWITCH
ON
OFF
LOGIC DIAGRAM (positive logic)
Logic symbol
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IEC logic symbol
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CMOS IC
ABSOLUTE MAXIMUM RATINGS (unless otherwise specified)(Note 1)
PARAMETER
SYMBOL
RATINGS
UNIT
Supply Voltage
VCC
-0.5~7
V
Enable Input Voltage
VE
-0.5~7
V
Enable Input Clamp Current
IEK
-20
mA
Switch Diode Current
ISK
±20
mA
On-State Switch current (-0.5V<VOS<VCC+0.5V)
IS
±25
mA
VCC or GND Current
ICC
±75
mA
Power Dissipation
PD
250
mW
Storage Temperature
TSTG
-65 ~ +150
°С
Notes: 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.
3. To avoid drawing VCC current out of pin Z, when switch current flows into pin Y, the voltage drop across the
bidirectional switch must not exceed 0.4V. If the switch current flows into pin Z, no VCC current will flow out
of pin Y. In this case there is no limit for the voltage drop across the switch, but the voltage at pins Y and Z
may not exceed VCC or GND.

RECOMMENDED OPERATING CONDITIONS
PARAMETER
Supply Voltage
Enable input Voltage
Switch Voltage
SYMBOL
VCC
VE
VS
Input Transition Rise or Fall Rate
tR, tF
Operating Temperature

TEST CONDITIONS
MIN
4.5
0
0
TYP
5.0
VCC=3.3+0.3V
VCC=5.0+0.5V
TA
MAX
5.5
5.5
VCC
-40
25
20
125
MIN
2.0
TYP
MAX
UNIT
V
V
V
ns/V
°С
STATIC CHARACTERISTICS
PARAMETER
High-Level
Input Voltage
Low-Level
Enable Input Leakage Current
OFF-State
Switch Current
ON-State
ON-Resistance(Peak)
ON-Resistance(Rail)
Quiescent Supply Current
Additional Quiescent Supply
Current
Enable Input Capacitance
Maximum Switch Capacitance
SYMBOL
TEST CONDITIONS
VIH
VCC=4.5V~5.5V
VIL
VCC=4.5V~5.5V
IE(LEAK)
VCC=5.5V, VE =VCC or GND
VCC=5.5V, |VS|=VCC - GND
IS
VCC=5.5V
VCC=4.5V~5.5V, VIS = VCC to GND,
RON(PEAK)
IS=10mA
VCC=4.5V~5.5V, VIS= VCC, IS=10mA
RON(RAIL)
VCC=4.5V~5.5V, VIS= GND, IS=10mA
VCC=5.5V, VE = VCC or GND,
IQ
VIS= GND or VCC, VOS=VCC or GND
VCC=5.5V, VE =3.4V,
∆ IQ
Other inputs at VCC or GND, IOUT=0
CE
VE=VCC or GND
CS
Independent I/O
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0.8
0.1
0.1
0.1
UNIT
V
V
μA
μA
μA
15
30
Ω
13
15
22
22
Ω
Ω
1.0
μA
1.35
mA
10
10
pF
pF
2
4
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DYNAMIC CHARACTERISTICS (TA=25°С, unless otherwise specified)
(Input: tR, tF≤3ns; PRR≤1MHz, All typical values are measured at VCC=5V.)
PARAMETER
SYMBOL
TEST CONDITIONS
Propagation Delay From Y/Z TO Z/Y
tPHL /tPLH VCC=4.5V~5.5V, CL=50pF
VCC=4.5V~5.5V, CL=15pF
Turn-On Time From E TO Z/Y
tPZH /tPZL
VCC=4.5V~5.5V, CL=50pF
VCC=4.5V~5.5V, CL=15pF
Turn-Off Time From E TO Z/Y
tPHZ /tPLZ
VCC=4.5V~5.5V, CL=50pF

MIN
TYP
0.7
3
4.7
5
6.5
MAX
1
7
10
8
11
UNIT
ns
ns
ns
ns
ns
MAX
UNIT
RECOMMENDED CONDITIONS AND TYPICAL VALUES (GND=0; tR=tF=3ns)
PARAMETER
Sine-Wave Distortion at f=1kHz
Sine-Wave Distortion at f=10kHz
Switch OFF Signal Feed-Through
(Note 4)
SYMBOL
TEST CONDITIONS
VCC=3.0V~3.6V,
RL=10kΩ,
VIS(P-P)=2.5V
CL=50pF
VCC=4.5V~5.5V,
VIS(P-P)=4.0V
VCC=3.0V~3.6V,
RL=10kΩ,
VIS(P-P)=2.5V
CL=50pF
VCC=4.5V~5.5V,
VIS(P-P)=4.0V
VCC=3.0V~3.6V,
RL=600Ω,
F=1MHz
CL=50pF
VCC=4.5V~5.5V,
F=1MHz
RL=50Ω,
VCC=3.0V~3.6V
CL=10pF
VCC=4.5V~5.5V
Minimum Frequency Response(-3dB)
fMAX
(Note 5)
OPERATING CHARACTERISTICS
Power Dissipation Capacitance
CPD
VCC=5, CL=50pF, f=10MHz
Notes: 4. Adjust input voltage VIS is 0dbm level (0dbm=1mW into 600Ω)
5. Adjust input voltage VIS is 0dbm level at VOS for 1MHz (0dbm=1mW into 50Ω)
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MIN
TYP
0.025
V
0.015
0.025
V
0.015
-50
V
-50
230
280
ns/V
15
pF
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CMOS IC
TEST CIRCUIT AND WAVEFORMS
A
VIS
Z/Y
Y/Z
(VCC or GND)
VOS
(GND or VCC)
CHANNEL
OFF
Fig. 1 OFF-State Switch Leakage Current Test Circuit
A
VIS
Z/Y
Y/Z
open
(VCC or GND)
CHANNEL
ON
Fig. 2 ON-State Leakage Current Test Circuit
V
VIS
Z/Y
Y/Z
IS
VOS
(VCC or GND)
CHANNEL
ON
Fig. 3 ON-State Resistance Test Circuit
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CMOS IC
TEST CIRCUIT AND WAVEFORMS(Cont.)
Fig. 4 The input (Y/Z) to output (Z/Y) propagation delays.
Fig. 5 The switch-on and switch-off times.
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
CMOS IC
TEST CIRCUIT AND WAVEFORMS(Cont.)
VCC
RL
10uf
VIS
Z/Y
Y/Z
CHANNEL
ON
VOS
RL
CL
Fig. 6 Sine-Wave Distortion
Fig. 7 Feed-through Attenuation (Switch OFF)
VCC
RL
0.1uf
VIS
Z/Y
Y/Z
CHANNEL
ON
VOS
RL
CL
Fig. 8 Minimum Frequency Response
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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