UNISONIC TECHNOLOGIES CO., LTD
U74AHCT1G66
BILATERAL SWITCH
CMOS IC
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
*Pb-free plating product number:
U74AHCT1G66L
ORDERING INFORMATION
Ordering Number
Normal
Lead Free Plating
U74AHCT1G66-AF5-R
U74AHCT1G66L-AF5-R
U74AHCT1G66-AL5-R
U74AHCT1G66L-AL5-R
Package
SOT-25
SOT-353
Packing
Tape Reel
Tape Reel
MARKING
3
2
T66
4
5
1
Lead Plating
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Copyright © 2007 Unisonic Technologies Co., Ltd
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QW-R126-001.A
U74AHCT1G66
PIN CONFIGURATION
GND
3
Z
2
Y
1
CMOS IC
4
E
5
V
CC
PIN DESCRIPTION
PIN NUMBER
1
2
3
4
5
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
SWITCH
ON
OFF
LOGIC DIAGRAM
(positive logic)
4
1
2
E
Z
Y
4 # X1
1
1
1 X1
1
2
Z
E
Y
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QW-R126-001.A
U74AHCT1G66
ABSOLUTE MAXIMUM RATINGS
(unless otherwise specified)(Note 1)
PARAMETER
CMOS IC
SYMBOL
RATINGS
UNIT
Supply Voltage
V
CC
-0.5~7
V
Enable Input Voltage
V
E
-0.5~7
V
Enable Input Clamp Current
I
EK
-20
mA
Switch Diode Current
I
SK
±20
mA
On-State Switch current (-0.5V<Vos<Vcc+0.5V)
I
S
±25
mA
V
CC
or GND
Current
I
CC
±75
mA
Power Dissipation
P
D
250
mW
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.
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
Input Transition Rise or Fall Rate
Operating Temperature
SYMBOL
V
CC
V
E
V
S
t
R
, t
F
T
A
TEST CONDITIONS
MIN
4.5
0
0
TYP
5.0
MAX
5.5
5.5
V
CC
20
125
UNIT
V
V
V
ns/V
℃
V
CC
=3.3+0.3V
V
CC
=5.0+0.5V
-40
25
STATIC CHARACTERISTICS
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
Enable Input Leakage Current I
E(LEAK)
V
CC
=5.5V, V
E
=V
CC
or GND
OFF-State
V
CC
=5.5V, |V
S
|=V
CC
- GND
Switch Current
I
S
ON-State
V
CC
=5.5V
V
CC
=4.5V~5.5V, V
IS
= V
CC
to GND,
ON-Resistance(Peak)
R
ON(PEAK)
I
S
=10mA
V
CC
=4.5V~5.5V, V
IS
= V
CC
, I
S
=10mA
ON-Resistance(Rail)
R
ON(RAIL)
V
CC
=4.5V~5.5V, V
IS
= GND, I
S
=10mA
V
CC
=5.5V, V
E
= V
CC
or GND, V
IS
= GND or
Quiescent Supply Current
I
Q
V
CC
, V
OS
=V
CC
or GND
V
CC
=5.5V, V
E
=3.4V, Other inputs at V
CC
Additional Quiescent Supply
∆
I
Q
Current
or GND, I
OUT
=0
Enable Input Capacitance
C
E
V
E
=V
CC
or GND
Maximum Switch Capacitance
C
S
Independent I/O
MIN
2.0
TYP
MAX
0.8
0.1
0.1
0.1
15
13
15
30
22
22
1.0
1.35
2
4
10
10
UNIT
V
V
μA
μA
μA
Ω
Ω
Ω
μA
mA
pF
pF
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QW-R126-001.A
U74AHCT1G66
DYNAMIC CHARACTERISTICS
(T
A
=25℃)
Input: t
R
, t
F
≤3ns;
PRR≤1MHz, All typical values are measured at V
CC
=5V.
PARAMETER
SYMBOL
TEST CONDITIONS
Propagation Delay From Y/Z TO Z/Y t
PHL
/t
PLH
V
CC
=4.5V~5.5V, C
L
=50pF
V
CC
=4.5V~5.5V, C
L
=15pF
Turn-On Time From E TO Z/Y
t
PZH
/t
PZL
V
CC
=4.5V~5.5V, C
L
=50pF
V
CC
=4.5V~5.5V, C
L
=15pF
Turn-Off Time From E TO Z/Y
t
PHZ
/t
PLZ
V
CC
=4.5V~5.5V, C
L
=50pF
MIN
TYP
0.7
3
4.7
5
6.5
TYP
0.025
CMOS IC
MAX
1
7
10
8
11
MAX
UNIT
ns
ns
ns
ns
ns
UNIT
V
Recommended conditions and typical values. GND=0; t
R
=t
F
=3ns
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
V
CC
=3.0V~3.6V, V
IS(P-P)
=2.5V,
R
L
=10kΩ, C
L
=50pF
Sine-Wave Distortion at f=1kHz
V
CC
=4.5V~5.5V, V
IS(P-P)
=4.0V,
R
L
=10kΩ, C
L
=50pF
V
CC
=3.0V~3.6V, V
IS(P-P)
=2.5V,
R
L
=10kΩ, C
L
=50pF
Sine-Wave Distortion at f=10kHz
V
CC
=4.5V~5.5V, V
IS(P-P)
=4.0V,
R
L
=10kΩ, C
L
=50pF
V
CC
=3.0V~3.6V, R
L
=600Ω, C
L
=50pF,
F=1MHz
Switch OFF Signal Feed-Through
(Note
4)
V
CC
=4.5V~5.5V, R
L
=600Ω, C
L
=50pF,
F=1MHz
V
CC
=3.0V~3.6V, R
L
=50Ω, C
L
=10pF
Minimum Frequency Response(-3dB)
f
MAX
(Note 5)
V
CC
=4.5V~5.5V, R
L
=50Ω, C
L
=10pF
OPERATING CHARACTERISTICS
Power Dissipation Capacitance
Cpd C
L
=50pF, f=10MHz, V
CC
=5
Note 4. Adjust input voltage V
IS
is 0dbm level (0dbm=1mW into 600Ω)
5. Adjust input voltage V
IS
is 0dbm level at V
OS
for 1MHz (0dbm=1mW into 50Ω)
0.015
0.025
V
0.015
-50
V
-50
230
280
15
ns/V
pF
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4 of 7
QW-R126-001.A
U74AHCT1G66
TEST CIRCUIT AND WAVEFORMS
CMOS IC
V
IS
(Vcc or GND)
A
Y/Z
Z/Y
Vos
(GND or Vcc)
CHANNEL
OFF
Fig. 1 OFF-State Switch Leakage Current Test Circuit
V
IS
(Vcc or GND)
A
Y/Z
Z/Y
open
CHANNEL
ON
Fig. 2 ON-State Leakage Current Test Circuit
V
V
IS
(Vcc or GND)
Y/Z
Z/Y
Is
Vos
R
ON
=
Vos-V
IS
Is
CHANNEL
ON
Fig. 3 ON-State Resistance Test Circuit
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QW-R126-001.A
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