AS1744 , AS1745
High-Speed, Low-Voltage, Dual, Single-Supply,
4
, SPDT Analog Switches
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austria
micro
systems
D a ta S h e e t
1 General Description
The AS1744/AS1745 are high-speed, low-voltage, dual
single-pole/double-throw (SPDT) analog switches.
Fast switching speeds, low ON-resistance, and low
power-consumption make these devices ideal for single-
cell battery powered applications.
These highly-reliable devices operate from a +1.8 to
+5.5V supply, are differentiated by inverted logic, and
support break-before-make switching.
With low ON-resistance (R
ON
), R
ON
matching, and R
ON
flatness, the devices can accurately switch signals for
sample and hold circuits, digital filters, and op-amp gain
switching networks.
The devices are available in a 10-pin MSOP package
and a 10-pin TDFN package.
Figure 1. Block Diagrams
2 Key Features
!
ON-Resistance:
- 4
(+5V supply)
- 5.5
(+3V supply)
!
R
ON
Matching: 0.2
(+5V supply)
!
R
ON
Flatness: 1
(+5V supply)
!
Supply Voltage Range: +1.8 to +5.5V
!
1.8V Operation:
- 9.5
ON-Resistance over Temperature
- 38ns Turn On Time
- 12ns Turn Off Time
!
Current-Handling: 100mA Continuous
!
Break-Before-Make Switching
!
Rail-to-Rail Signal Handling
!
Crosstalk: -90dB at 1MHz
!
Off-Isolation: -85dB at 1MHz
!
Total Harmonic Distortion: 0.1%
!
Operating Temperature Range: -40 to +85C
!
Package Types:
- 10-pin MSOP
- 10-pin TDFN
3 Applications
The devices are ideal for use in power routing systems,
cordless and mobile phones, MP3 players, CD and DVD
players, PDAs, handheld computers, digital cameras,
and any other application where high-speed signal
switching is required.
AS1744
AS1745
1
IN1
10
COM1
2
NO1
3
GND
5
IN2
4
NO2
9
NC1
8
V+
7
NC2
6
COM2
1
IN1
2
NC1
3
GND
5
IN2
4
NC2
10
COM1
9
NO1
8
V+
7
NO2
6
COM2
Truth Table
Switches shown for low input.
INx
NOx to
COMx
NCx to
COMx
Low
Off
On
High
On
Off
AS1744, AS1745
austria
micro
systems
Data Sheet
www.austriamicrosystems.com
Revision 1.53
2 - 16
4 Absolute Maximum Ratings
Stresses beyond those listed in
Table 1
may cause permanent damage to the device. These are stress ratings only,
and functional operation of the device at these or any other conditions beyond those indicated in Section 5 Electrical
Characteristics on page 3 is not implied. Exposure to absolute maximum rating conditions for extended periods may
affect device reliability.
Signals on pins COM1, COM2, NO1, NO2, NC1, or NC2 that exceed V+ or GND are clamped by internal diodes.
Limit forward-diode current to the maximum current rating.
Table 1. Absolute Maximum Ratings
Parameter
Min
Max
Units
Comments
V+, IN1, IN2 to GND
-0.3
+7
V
COM
x
, NO
x
, NC
x
to GND
-0.3
V+
+ 0.3
V
COM
x
, NO
x
, NC
x
Continuous Current
-100
+100
mA
COM
x
, NO
x
, NC
x
Peak Current
-150
+150
mA
Pulsed at 1ms, 10% duty cycle
Continuous Power Dissipation (T
AMB
= +70C)
330
mW
Derate at 4.7mW/C above +70C
Electro-Static Discharge
1000
V
HBM Mil-Std883E 3015.7
methods
Latch Up Immunity
100
mA
Norm:
JEDEC 17
Operating Temperature Range
-40
+85
C
Junction Temperature
150
C
Storage Temperature Range
-65
+150
C
Package Body Temperature
+260
C
The reflow peak soldering temperature (body
temperature) specified is in accordance with
IPC/JEDEC J-STD-020C "Moisture/Reflow
Sensitivity Classification for Non-Hermetic
Solid State Surface Mount Devices"
AS1744, AS1745
austria
micro
systems
Data Sheet
www.austriamicrosystems.com
Revision 1.53
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5 Electrical Characteristics
V+ = +4.5 to 5.5V, V
IH
= +2.4V, V
IL
= +0.8V, T
AMB
= T
MIN
to T
MAX
(unless otherwise specified). Typ Values @T
AMB
= +25C.
Table 2. +5V Supply Electrical Characteristics
Symbol
Parameter
Conditions
Min
Typ
Max Unit
Analog Switch
V
COM
x
,
V
NO
x
,
V
NC
x
Analog Signal
Range
0
V+
V
R
ON
ON-Resistance
V+ = 4.5V, I
COM
x
= 10mA,
V
NO
x
or V
NC
x
= 0 to V+
T
AMB
= +25C
2.5
4
T
AMB
= T
MIN
to T
MAX
4.5
R
ON
ON-Resistance
Match Between
Channels
1
V+ = 4.5V, I
COM
x
= 10mA,
V
NO
x
or V
NC
x
= 0 to V+
T
AMB
= +25C
0.1
0.2
T
AMB
= T
MIN
to T
MAX
0.4
R
FLAT(ON)
ON-Resistance
Flatness
2
V+ = 4.5V, I
COM
x
= 10mA,
V
NO
x
or V
NC
x
= 0 to V+
T
AMB
= +25C
0.5
1
T
AMB
= T
MIN
to T
MAX
1.2
I
NO
x
(OFF)
,
I
NC
x
(OFF)
NO
x
or NC
x
Off-
Leakage Current
3
V+ = 5.5V, V
COM
x
= 1 or 4.5V,
V
NO
x
or V
NC
x
= 4.5 or 1V
T
AMB
= +25C
-0.1 0.01
0.1
nA
T
AMB
= T
MIN
to T
MAX
-0.3
0.3
I
COM
x
(OFF)
COM
x
Off-
Leakage Current
3
V+ = 5.5V, V
COM
x
= 1 or 4.5V,
V
NO
x
or V
NC
x
= 4.5 or 1V
T
AMB
= +25C
-0.1 0.01
0.1
nA
T
AMB
= T
MIN
to T
MAX
-3
3
I
COM
x
(ON)
COM
x
On-
Leakage Current
3
V+ = 5.5V, V
COM
x
= 4.5 or 1V,
V
NO
x
or V
NC
x
= 4.5 or 1V
T
AMB
= +25C
-0.4
0.1
0.4
nA
T
AMB
= T
MIN
to T
MAX
-4
4
Logic Input
:
IN
x
V
IH
Input Logic High
2.4
V
V
IL
Input Logic Low
0.8
V
I
IH
, I
IL
Input Leakage
Current
V
IN
x
= 0 or +5.5V
-100
5
100
nA
Switch Dynamic Characteristics
t
ON
Turn On Time
3
V
NO
x
or V
NC
x
= 3V, R
LOAD
= 300
,
C
LOAD
= 35pF, Figure 11
T
AMB
= +25C
14
17
ns
T
AMB
= T
MIN
to T
MAX
18
t
OFF
Turn Off Time
3
V
NO
x
or V
NC
x
= 3V, R
LOAD
= 300
,
C
LOAD
= 35pF, Figure 11
T
AMB
= +25C
4
6
ns
T
AMB
= T
MIN
to T
MAX
8
t
BBM
Break-Before-
Make
3
V
NO
x
or V
NC
x
= 3V, R
LOAD
= 300
,
C
LOAD
= 35pF, Figure 12
T
AMB
= +25C
10
ns
T
AMB
= T
MIN
to T
MAX
1
Q
Charge Injection
V
GEN
= 2V, R
GEN
= 0, C
LOAD
= 1.0nF, Figure 13
7
pC
C
NOx(OFF)
,
C
NCx(OFF)
NO
x
, NC
x
Off-
Capacitance
V
NO
x
or V
NC
x
= GND, f = 1MHz, Figure 14
20
pF
C
COM
x
(ON)
COM
x
On-
Capacitance
V
COM
x
= GND, f = 1MHz, Figure 14
56
pF
V
ISO
Off-Isolation
4
f = 10MHz, R
LOAD
= 50
, C
LOAD
= 5pF,
Figure 15
-52
dB
f = 1MHz, R
LOAD
= 50
, C
LOAD
= 5pF,
Figure 15
-85
V
CT
Crosstalk
5
f = 10MHz, R
LOAD
= 50
, C
LOAD
= 5pF,
Figure 15
-52
dB
f = 1MHz, R
LOAD
= 50
, C
LOAD
= 5pF,
Figure 15
-90
THD
Total Harmonic
Distortion
f = 20Hz to 20kHz, V
NO
x
= 5Vp-p, R
LOAD
= 600
0.1
%
Power Supply
I+
Positive Supply
Current
V+ = 5.5V, V
INx
= 0 or V+
0.01
1.0
A
AS1744, AS1745
austria
micro
systems
Data Sheet
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Revision 1.53
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V+ = +2.7 to 3.6V, V
IH
= +2.0V, V
IL
= +0.4V, T
AMB
= T
MIN
to T
MAX
(unless otherwise specified). Typ values @ T
AMB
= +25C.
1.
R
ON
= R
ON(MAX)
- R
ON(MIN)
.
2. Flatness is defined as the difference between the maximum and the minimum value of ON-resistance as measured
over the specified analog signal ranges.
3. Guaranteed by design.
4. Off-Isolation = 20log10(V
COM
x
/V
NO
x
), V
COM
x
= output, V
NO
x
= input to off switch.
5. Between any two switches.
Table 3. +3V Supply Electrical Characteristics
Symbol
Parameter
Conditions
Min
Typ
Max Unit
Analog Switch
V
COM
x
,
V
NO
x
,
V
NC
x
Analog Signal Range
0
V+
V
R
ON
ON-Resistance
V+ = 2.7V, I
COM
x
= 10mA,
V
NO
x
or V
NC
x
= 0 to V+
T
AMB
= +25C
5
5.5
T
AMB
= T
MIN
to T
MAX
8
R
ON
ON-Resistance
Match Between
Channels
1
V+ = 2.7V, I
COM
x
= 10mA,
V
NO
x
or V
NC
x
= 0 to V+
T
AMB
= +25C
0.1
0.2
T
AMB
= T
MIN
to T
MAX
0.4
R
FLAT(ON)
ON-Resistance
Flatness
2
V+ = 2.7V, I
COM
x
= 10mA,
V
NO
x
or V
NC
x
= 0 to V+
T
AMB
= +25C
1.5
2
T
AMB
= T
MIN
to T
MAX
2.5
I
NO
x
(OFF)
,
I
NC
x
(OFF)
NO
x
or NC
x
Off-
Leakage Current
3
V+ = 3.3V, V
COM
x
= 1 or 3V,
V
NO
x
or V
NC
x
= 3 or 1V
T
AMB
= +25C
-0.1
0.01
0.1
nA
T
AMB
= T
MIN
to T
MAX
-0.3
0.3
I
COM
x
(OFF)
COM
x
Off-Leakage
Current
3
V+ = 3.3V, V
COM
x
= 1 or 3V,
V
NO
x
or V
NC
x
= 3 or 1V
T
AMB
= +25C
-0.1
0.01
0.1
nA
T
AMB
= T
MIN
to T
MAX
-3
3
I
COM
x
(ON)
COM
x
On-Leakage
Current
3
V+ = 3.3V, V
COM
x
= 1 or 3V,
V
NO
x
or V
NC
x
= 1 or 3V
T
AMB
= +25C
-0.4
0.1
0.4
nA
T
AMB
= T
MIN
to T
MAX
-4
4
Logic Input
: (IN
x
)
V
IH
Input Logic High
2.0
V
V
IL
Input Logic Low
0.4
V
I
IH
,I
IL
Input Leakage
Current
V
IN
x
= 0 or +5.5V
-100
5
100
nA
Switch Dynamic Characteristics
t
ON
Turn On Time
3
V
NO
x
or V
NC
x
= 2V, R
LOAD
=
300
, C
LOAD
= 35pF, Figure 11
T
AMB
= +25C
17
23
ns
T
AMB
= T
MIN
to T
MAX
28
t
OFF
Turn Off Time
3
V
NO
x
or V
NC
x
= 2V, R
LOAD
=
300
, C
LOAD
= 35pF, Figure 11
T
AMB
= +25C
6
8
ns
T
AMB
= T
MIN
to T
MAX
10
t
BBM
Break-Before-Make
3
V
NO
x
or V
NC
x
= 2V, R
LOAD
=
300
, C
LOAD
= 35pF, Figure 12
T
AMB
= +25C
11
ns
T
AMB
= T
MIN
to T
MAX
1
Q
Charge Injection
V
GEN
= 1.5V, R
GEN
= 0, C
LOAD
= 1.0nF, Figure 13
0
pC
C
NOx(OFF)
,
C
NCx(OFF)
NO
x
, NC
x
Off-
Capacitance
V
NO
x
or V
NC
x
= GND, f = 1MHz, Figure 14
20
pF
C
COM
x
(ON)
COM
x
On-
Capacitance
V
COM
x
= GND, f = 1MHz, Figure 14
56
pF
V
ISO
Off-Isolation
4
f = 10MHz, R
LOAD
= 50
, C
LOAD
= 5pF, Figure 15
-52
dB
f = 1MHz, R
LOAD
= 50
, C
LOAD
= 5pF, Figure 15
-85
V
CT
Crosstalk
5
f = 10MHz, R
LOAD
= 50
, C
LOAD
= 5pF, Figure 15
-52
dB
f = 1MHz, R
LOAD
= 50
, C
LOAD
= 5pF, Figure 15
-90
Power Supply
I+
Positive Supply
Current
V+ = 3.6V, V
IN
= 0 or +3.6V
0.01
1.0
A
AS1744, AS1745
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micro
systems
Data Sheet
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Revision 1.53
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6 Typical Operating Characteristics
Figure 2. Frequency Response
Figure 3. THD vs. Frequency
Figure 4. R
ON
vs. V
COM
and Temperature (V
DD
= 5V)
Figure 5. R
ON
vs. V
COM
and Temperature (V
DD
= 3V)
Figure 6. R
ON
vs. V
COM
Figure 7. t
ON
/t
OFF
vs. Temperature (V+ = 5V)
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
10
0.001
0.1
10
1000
Frequency (MHz)
Loss (dB)
Isolation
Bandwidth
Crosstalk
0
0.02
0.04
0.06
0.08
0.1
0.12
1000
10000
100000
Frequency (Hz)
THD (%)
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
0.0
1.0
2.0
3.0
V
COM
(V)
R
ON
(
)
1.0
1.5
2.0
2.5
3.0
3.5
0
1
2
3
4
5
V
COM
(V)
R
ON
(
)
Temp = +85C
Temp = +25C
Temp = -40C
Temp = +85C
Temp = +25C
Temp = -40C
0
2
4
6
8
10
12
14
0
1
2
3
4
5
V
COM
(V)
R
ON
(
)
V
DD
= 1.8V
V
DD
= 2.5V
V
DD
= 3V
V
DD
= 4.5V
V
DD
= 5V
0
5
10
15
20
25
-40
25
85
Temperature (C)
t
ON
/t
OFF
(ns)
t
ON
t
OFF
AS1744, AS1745
austria
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systems
Data Sheet
ON-Resistance
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Revision 1.53
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Figure 8. t
ON
/t
OFF
vs. Supply Voltage
Figure 9. Charge Injection
7 Detailed Description
The AS1744/AS1745 are low ON-resistance, low-voltage, dual analog SPDT switches that operate from a single +1.8
to +5.5V supply.
CMOS process technology allows switching of analog signals that are within the supply voltage range (GND to V+).
ON-Resistance
When powered from a +5V supply, the low R
ON
(4
max) allows high continuous currents to be switched in a wide
range of applications. All devices have low R
ON
flatness (1
, max) so they can meet or exceed the low-distortion audio
requirements of modern portable audio devices.
Bi-Directional Switching
Pins NO
x
, NC
x
, and COM
x
are bi-directional, thus they can be used as inputs or outputs.
Analog Signal Levels
Analog signals ranging over the entire supply voltage (V+ to GND) can be passed with very little change in ON-resis-
tance (see
Typical Operating Characteristics on page 5
).
Logic Inputs
The AS1744/AS1745 logic inputs (IN
x
) can be driven up to +5.5V regardless of the supply voltage value. For example,
with a +3.3V supply, IN+ may be driven low to GND and high to +5.5V. This allows the devices to interface with +5V
systems using a supply of less than 5V.
0
10
20
30
40
1.5
2.5
3.5
4.5
5.5
Supply Voltage (V)
t
ON
/t
OFF
(ns)
-5
0
5
10
15
20
25
30
35
0
1
2
3
4
5
V
COM
(V)
Q(pC)
V
DD
= 3V
V
DD
= 5V
V
DD
= 3V
V
DD
= 5V
t
ON
t
OFF
-5
0
5
10
15
20
25
30
35
0
1
2
3
4
5
V
COM
(V)
Q(pC)
V
DD
= 3V
V
DD
= 5V
V
DD
= 3V
V
DD
= 5V
AS1744, AS1745
austria
micro
systems
Data Sheet
Power-Supply Sequencing
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Revision 1.53
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8 Application Information
Power-Supply Sequencing
Proper power-supply sequencing is critical for proper operation. The recommended sequence is as follows:
1. V+
2. NO
x,
NC
x,
COM
x
Always apply V+ before applying analog signals, especially if the analog signal is not current-limited. If the above
sequence is not possible, and if the analog inputs are not current-limited to less than 30mA, add a small-signal diode
as shown in
Figure 10
(D1). If the analog signal can dip below GND, add diode D2. Adding these diodes will reduce the
analog range to a diode-drop (about 0.7V) below V+ (for D1), and a diode-drop above ground (for D2).
Note:
Operation beyond the absolute maximum ratings (see page 2) may permanently damage the devices.
Overvoltage Protection
ON-resistance increases slightly at lower supply voltages.
Figure 10. Overvoltage Protection Using 2 External Blocking Diodes
Adding diode D2 to the circuit shown in
Figure 10
causes the logic threshold to be shifted relative to GND. Diodes D1
and D2 also protect against overvoltage conditions.
For example, in the circuit shown in
Figure 10
, if the supply voltage goes below the absolute maximum rating, and if a
fault voltage up to the absolute maximum rating is applied to an analog signal pin, no damage will result.
Note:
The supply voltage (V+) must not exceed the absolute maximum rating of +7V.
Power Supply Bypass
Power supply connections to the devices must maintain a low impedance to ground. This can be done using a bypass
capacitor, which will also improve noise margin and prevent switching noise propagation from the V+ supply to other
components.
Layout Considerations
High-speed switches require proper layout and design procedures for optimum performance.
!
Reduce stray inductance and capacitance by keeping traces short and wide.
!
Ensure that bypass capacitors are as close to the device as possible.
!
Use large ground planes where possible.
AS1744/AS1745
GND
V
GEN
NO
x
D2
D1
V+
V+
COM
x
AS1744, AS1745
austria
micro
systems
Data Sheet
Timing Diagrams and Test Setups
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Revision 1.53
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Timing Diagrams and Test Setups
Figure 11. Switching Time
Figure 12. Break-Before-Make Interval
Figure 13. Charge Injection
AS1744/
AS1745
COM
x
R
LOAD
V
OUT
IN
x
V+
V+
Switch
Output
Logic
Input
0
0
V
OUT
V
IH
+ 0.5V
t
ON
t
OFF
t
R
< 5ns
t
F
< 5ns
50%
50%
0.9 x V
OUT
NOx or NC
x
V
IN
NCx or NO
x
C
LOAD
Includes stray capacitance and fixture capacitance.
0.9 x V
OUT
Logic input waveforms inverted for switches
that have the opposite logic sense.
GND
Logic
Input
AS1744/
AS1745
COM
x
V
OUT
IN
x
V+
V+
NOx or NCx
V
IN
NCx or NOx
Includes stray capacitance and fixture capacitance.
Logic
Input
0
V
OUT
V
IH
+ 0.5V
t
D
t
R
< 5ns
t
F
< 5ns
50%
0.9 x V
OUT
R
LOAD
C
LOAD
GND
Logic
Input
AS1744/
AS1745
COM
x
NC
x
or NO
x
C
LOAD
V
OUT
R
GEN
V+
V
OUT
IN
x
V
OUT
IN
x
depends on switch configuration; input polar-
ity is determined by the sense of the switches.
Q =
V
OUT x
C
LOAD
V+
V
INL
to
V
INH
IN
x
IN
x
Off
Off
Off
Off
On
On
V
GEN
GND
AS1744, AS1745
austria
micro
systems
Data Sheet
Timing Diagrams and Test Setups
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Revision 1.53
9 - 16
Figure 14. NOx, NCx, and COMx Capacitance
Figure 15. Off-Isolation, On-Loss, and Crosstalk
Notes:
1. Measurements are standardized against short-circuit at all terminals.
2. Off-isolation is measured between COM
x
and the off NC
x
/NO
x
terminal of each switch. Off-isolation =
20log(V
OUT
/V
IN
).
3. Crosstalk is measured from one channel to all other channels.
4. Signal direction through the switch is reversed; worst values are recorded.
AS1744/
AS1745
COM
x
NC
x
or
NO
x
IN
x
V+
V+
V
INH
or
V
INL
1MHz
Capacitance
Analyzer
GND
10nF
AS1744/
AS1745
COM
x
NO
x
IN
x
V+
V+
50
50
50
50
V
IN
V
OUT
10nF
Measure
Reference
GND
Network Analyzer
V+
NC
x
50
AS1744, AS1745
austria
micro
systems
Data Sheet
Pin Assignments
www.austriamicrosystems.com
Revision 1.53
10 - 16
9 Pinout and Packaging
Pin Assignments
Figure 16. Pin Assignments (Top View)
Pin Descriptions
Table 4. Pin Descriptions
Pin Number
Pin Name
Description
AS1744
AS1745
10 10
COM1
Analog Switch 1 Common
6 6
COM2
Analog Switch 2 Common
3 3
GND
Ground
1 1 IN1
Analog Switch 1 Logic Control Input
5 5 IN2
Analog Switch 2 Logic Control Input
9 2
NC1
Analog Switch 1 Normally Closed Terminal
7 4
NC2
Analog Switch 2 Normally Closed Terminal
2 9
NO1
Analog Switch 1 Normally Open Terminal
4 7
NO2
Analog Switch 2 Normally Open Terminal
8 8 V+
Input Supply Voltage
. +1.8 to +5.5V
AS1744
10 COM1
7 NC2
8 V+
9 NC1
1
IN1
4
NO2
3
GND
2
NO1
6 COM2
5
IN2
AS1745
10 COM1
7 NO2
8 V+
9 NO1
1
IN1
4
NC2
3
GND
2
NC1
6 COM2
5
IN2
AS1744, AS1745
austria
micro
systems
Data Sheet
Package Drawings and Markings
www.austriamicrosystems.com
Revision 1.53
11 - 16
Package Drawings and Markings
The devices are available in a 10-pin MSOP package and a 10-pin TDFN package.
Figure 17. 10-pin MSOP Package
Symbol
Typ
Tol
Symbol
Typ
Tol
A
1.10
Max
b
0.23
+0.07/-0.08
A1
0.10
0.05
b1
0.20
0.05
A2
0.86
0.08
c
0.18
0.08
D
3.00
0.10
c1
0.15
+0.03/-0.02
D2
2.95
0.10
1
3.0
3.0
E
4.90
0.15
2
12.0
3.0
E1
3.00
0.10
3
12.0
3.0
E2
2.95
0.10
L
0.55
0.15
E3
0.51
0.13
L1
0.95BSC
-
E4
0.51
0.13
aaa
0.10
-
R
0.15
+0.15/-0.08
bbb
0.08
-
R1
0.15
+0.15/-0.08
ccc
0.25
-
t1
0.31
0.08
e
0.50 BSC
-
t2
0.41
0.08
S
0.50 BSC
-
AS1744, AS1745
austria
micro
systems
Data Sheet
Package Drawings and Markings
www.austriamicrosystems.com
Revision 1.53
12 - 16
Notes:
1. All dimensions are in millimeters, angles in degrees, unless otherwise specified.
2. Datums B and C to be determined at datum plane H.
3. Dimensions D and E1 are to be determined at datum plane H.
4. Dimensions D2 and E2 are for top package; dimensions D and E1 are for bottom package.
5. Cross section A-A to be determined at 0.13 to 0.25mm from lead tip.
6. Dimensions D and D2 do not include mold flash, protrusion, or gate burrs.
7. Dimensions E1 and E2 do not include interlead flash or protrusion.
AS1744, AS1745
austria
micro
systems
Data Sheet
Package Drawings and Markings
www.austriamicrosystems.com
Revision 1.53
13 - 16
Figure 18. 10-pin TDFN Package (3.0x3.0mm)
SEATING
-A-
-B-
E/2
2x
2x
TOP VIEW
aaa C
aaa
C
E
(D/2 xE/2)
4
INDEX AREA
D/2
D
PLANE
NX
10
0.08 C
ccc C
A
A1
SIDE VIEW
A3
-C-
SEE
DETAIL B
4
INDEX AREA
(D/2 xE/2)
5
6
BOTTOM VIEW
N-1
N
bbb
C A B
ddd
C
E2
E2/2
D2
D2/2
NXb
NXL
(ND-1) X e
e
10
7
8
NXK
PIN 1 MARKER
E
D
TYPE A
L1
DETAIL B
Terminal Tip
ODD TERMINAL SIDE
e
Datum A or B
5
L2
Symbol
Min
Typ
Max
Notes
A
0.70
0.75
0.80
1, 2
A1
0.00
0.02
0.05
1, 2
A3
0.20 REF
1, 2
L1
0.15
1, 2
L2
0.13
1, 2
0
14
1, 2
K
0.20
1, 2
K2
0.17
1, 2
b
0.18
0.25
0.30
1, 2, 5
e
0.5
aaa
0.15
1, 2
bbb
0.10
1, 2
ccc
0.10
1, 2
ddd
0.05
1, 2
eee
0.08
1, 2
ggg
0.10
1, 2
Variations
Symbol
Min
Typ
Max
Notes
D BSC
3.00
1, 2
E BSC
3.00
1, 2
D2
2.20
2.70
1, 2
E2
1.40
1.75
1, 2
L
0.30
0.40
0.50
1, 2
N
10
1, 2
ND
5
1, 2, 5
AS1744, AS1745
austria
micro
systems
Data Sheet
Package Drawings and Markings
www.austriamicrosystems.com
Revision 1.53
14 - 16
Notes:
1. Dimensioning and tolerancing are compliant with
ASME Y14.5M-1994
.
2. Dimensions are in millimeters, angles in degrees ().
3. N is the total number of terminals.
4. The terminal 1 identifier and terminal numbering convention shall conform to
JESD 95-1 SPP-01
2. Details of
terminal 1 identifier are optional, but must be located within the zone indicated. The terminal 1 identifier may
be either a mold, embedded metal or mark feature.
5. Dimension b applies to metallized terminal and is measured between 0.15 and 0.30mm from terminal tip.
6. ND refers to the maximum number of terminals on D side.
7. Variation shown in
Figure 18
is for illustration purposes only.
8. For variation identifier dimension details, refer to the Dimensions table.
9. For a complete set of dimensions for each variation, refer to the Variations table.
10. Unilateral coplanarity zone applies to the exposed heat sink slug and the terminals.
11. For a rectangular package, the terminal side of the package is determined by:
- Type 1: Terminals are on the short side of the package.
- Type 2: Terminals are on the long side of the package.
12. Variations specified as NJR (non JEDEC registered), with an additional dash number (e.g., -1, -2) are pack-
ages currently not registered with JEDEC.
13. When more than one variations exist for the same profile height, body size (DxE), and pitch, then those vari-
ations will be denoted by an additional dash number (i.e., -1,-2) for identification. The new variations shall be
created based on any or all of the following factors: terminal count, terminal length, and exposed pad sizes.
AS1744, AS1745
austria
micro
systems
Data Sheet
www.austriamicrosystems.com
Revision 1.53
15 - 16
10 Ordering Information
The devices are available as the standard products shown in
Table 5
.
Available upon request. Contact austriamicrosystems, AG for details.
Table 5. Ordering Information
Type
Description
Delivery Form
Package
AS1744G
Dual SPDT Switch
Tube
10-pin MSOP
AS1744G-T
Dual SPDT Switch
Tape and Reel
10-pin MSOP
AS1744V-T
Dual SPDT Switch
Tape and Reel
10-pin TDFN
AS1745G
Dual SPDT Switch
Tube
10-pin MSOP
AS1745G-T
Dual SPDT Switch
Tape and Reel
10-pin MSOP
AS1745V-T
Dual SPDT Switch
Tape and Reel
10-pin TDFN
AS1744, AS1745
austria
micro
systems
Data Sheet
www.austriamicrosystems.com
Revision 1.53
16 - 16
Copyrights
Copyright 1997-2006, austriamicrosystems AG, Schloss Premstaetten, 8141 Unterpremstaetten, Austria-Europe.
Trademarks Registered . All rights reserved. The material herein may not be reproduced, adapted, merged, trans-
lated, stored, or used without the prior written consent of the copyright owner.
All products and companies mentioned are trademarks or registered trademarks of their respective companies.
Disclaimer
Devices sold by austriamicrosystems AG are covered by the warranty and patent indemnification provisions appearing
in its Term of Sale. austriamicrosystems AG makes no warranty, express, statutory, implied, or by description regarding
the information set forth herein or regarding the freedom of the described devices from patent infringement. austriami-
crosystems AG reserves the right to change specifications and prices at any time and without notice. Therefore, prior
to designing this product into a system, it is necessary to check with austriamicrosystems AG for current information.
This product is intended for use in normal commercial applications. Applications requiring extended temperature
range, unusual environmental requirements, or high reliability applications, such as military, medical life-support or life-
sustaining equipment are specifically not recommended without additional processing by austriamicrosystems AG for
each application. For shipments of less than 100 parts the manufacturing flow might show deviations from the standard
production flow, such as test flow or test location.
The information furnished here by austriamicrosystems AG is believed to be correct and accurate. However,
austriamicrosystems AG shall not be liable to recipient or any third party for any damages, including but not limited to
personal injury, property damage, loss of profits, loss of use, interruption of business or indirect, special, incidental or
consequential damages, of any kind, in connection with or arising out of the furnishing, performance or use of the tech-
nical data herein. No obligation or liability to recipient or any third party shall arise or flow out of
austriamicrosystems AG rendering of technical or other services.
Contact Information
Headquarters
austriamicrosystems AG
A-8141 Schloss Premstaetten, Austria
Tel: +43 (0) 3136 500 0
Fax: +43 (0) 3136 525 01
For Sales Offices, Distributors and Representatives, please visit:
http://www.austriamicrosystems.com
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micro
systems
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