PI3CH3245
L
OW
Voltage, 5Ω, 8-Channel
2-Port
NanoSwitch
™
Features
•
•
•
•
•
•
•
•
•
•
•
Near-Zero propagation delay
5-ohm switches connect inputs to outputs
High signal passing bandwidth (500 MHz)
Beyond Rail-to-Rail switching
5V I/O Tolerant with 3.3V supply in OFF and ON state
2.5V and 3.3V supply voltage operation
Hot insertion capable
Industrial operating temperature: –40ºC to +85ºC
2kV ESD protection (human body model)
Latch-up performance: >250mA per JESD17
Packaging (Pb-free & Green available):
– 20-pin 150-mil wide plastic QSOP (Q)
– 20-pin 173-mil wide plastic TSSOP (L)
Description
The PI3CH3245 is a low voltage, 8-channel switch designed with
a fast enable. The switch creates no additional propagational delay
or additional ground bounce noise.
The PI3CH3245 device has an active LOW enable. It is very useful
in switching signals that have high bandwidth (500 MHz).
Applications
•
•
•
•
High Bandwidth Data Switching
Hot-Docking
Analog Signal Switching
Differential Signal Switching
Block Diagram
Pin Configuration
Note:
N.C. = No internal connection
Truth Table
(1)
Function
Disconnect
Connect
Notes:
1. H = High Voltage Level
L = Low Voltage Level
Hi-Z = High Impedance
Pin Description
EN
H
L
A0-A7
Hi-Z
B0-B7
Pin Name
EN
A
0
- A
7
B
0
- B
7
GND
V
CC
A Ports
B Ports
Ground
Power
Description
Switch Enable
09-0014
1
PS9042A
01/06/09
PI3CH3245
Low Voltage, 5Ω, 8-Channel
2-Port
NanoSwitch
™
Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.)
Storage Temperature ................................................ –65°C to +150°C
Ambient Temperature with Power Applied ............... –40°C to +85°C
Supply Voltage to Ground Potential ........................... –0.5V to +4.6V
DC Input Voltage ........................................................ –0.5V to +6.0V
DC Output Current................................................................... 120mA
Power Dissipation ........................................................................0.5W
DC Electrical Characteristics, 3.3V Supply
(Over Operating Range, T
A
= –40°C to +85°C, V
CC
= 3.3V ± 10%)
V
IH
V
IL
V
IK
I
IH
I
IL
I
OZH
R
ON
Input HIGH Voltage
Input LOW Voltage
Clamp Diode Voltage
Input HIGH Current
Input LOW Current
High-Impedence Current
Switch On-Resistance
(3)
Guaranteed Logic HIGH Level
Guaranteed Logic LOW Level
V
CC
= Min., I
IN
= –18mA
V
CC
= Max., V
IN
= V
CC
0
≤
A, B
≤
V
CC
V
CC
= Max., V
IN
= GND
SI
2
–0.5
Min.
1.8
–0.3
Parameters
Description
Test Conditions
(1)
O
Min.
4
5
–0.7
4
7
N
Typ.
(2)
–1.3
6
8
Typ.
(2)
±1
±1
±1
8
14
Note:
Stresses greater than those listed under MAXIMUM
RATINGS may cause permanent damage to the device. This is a
stress rating only and functional operation of the device at these
or any other conditions above those indicated in the operational
sections of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect re-
liability.
Max.
0.8
–1.8
±1
±1
±1
Units
V
R
2
VE
μA
V
CC
= Min.,V
IN
= 0V, I
ON
= –48mA
or –64mA
V
CC
= Min.,V
IN
= 3.6V, I
ON
= –15mA
Ω
DC Electrical Characteristics, 2.5V Supply
(Over Operating Range, T
A
= –40°C to +85°C, V
CC
= 2.5V ± 10%)
Parameters
V
IH
V
IL
I
IH
I
IL
V
IK
Description
Test Conditions
(1)
Max.
V
CC
+0.3
0.8
–1.8
μA
V
Units
R
Input HIGH Voltage
Inout LOW Voltage
Clamp Diode Voltage
Input HIGH Current
Input LOW Current
High Impedance Current
Switch On-Resistance
(3)
D
I
OZH
R
ON
AF
T
Notes:
1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at V
CC
= 3.3V, T
A
= 25°C ambient and maximum loading.
3. Measured by the voltage drop between A and B pin at indicated current through the switch. On-Resistance is determined
by the lower of the voltages on the two (A,B) pins.
Guaranteed Logic HIGH Level
Guaranteed Logic LOW Level
V
CC
= Max., I
IN
= –6mA
V
CC
= Max., V
IN
= V
CC
V
CC
= Max., V
IN
= GND
0
≤
A, B
≤
V
CC
V
CC
= Min., V
IN
= 0V, I
ON
= –48mA
V
CC
= Min., V
IN
= 2.25V, I
ON
= –15mA
Ω
Notes:
1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at V
CC
= 3.3V, T
A
= 25°C ambient and maximum loading.
3. Measured by the voltage drop between A and B pin at indicated current through the switch. On-Resistance is determined
by the lower of the voltages on the two (A,B) pins.
09-0014
PS9042A
01/06/09
PI3CH3245
Low Voltage, 5Ω, 8-Channel
2-Port
NanoSwitch
™
Capacitance
(T
A
= 25°C, f = 1 MHz)
Parameters
(1)
C
IN
C
OFF
C
ON
Description
Input Capacitance
A/B Capacitance, Switch Off
A/B Capacitance, Switch On
V
IN
= 0V
Test Conditions
Typ.
2.0
3.5
7.0
pF
Units
Power Supply Characteristics
Parameters
I
CC
Description
Test Conditions
(1)
Quiescent Power Supply Current V
CC
= 3.6V, V
IN
= GND or V
CC
O
Min.
Min.
Typ.
–60
–60
200
500
N
Typ.
(2)
Max.
0.8
Units
mA
Max.
Units
dB
MHz
PS9042A
01/06/09
Notes:
1. This parameter is determined by device characterization but is not production tested.
Parameter
X
TALK
O
IRR
BW
Description
Crosstalk
Off-Isolation
–3dB Bandwidth
D
09-0014
R
3
AF
T
VE
Test Condition
10 MHz
10 MHz
See Test Diagram
Dynamic Electrical Characteristics Over the Operating Range
(T
A
= –40º to +85º, V
CC
= 3.3V ± 10%)
R
Notes:
1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device.
2. Typical values are at V
CC
= 3.3V, +25°C ambient.
SI
PI3CH3245
Low Voltage, 5Ω, 8-Channel
2-Port
NanoSwitch
™
Switching Characteristics over 3.3V Operating Range
Parameters
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
Description
Propogation Delay
(2,3)
A to B, B to A
Enable Time EN to A or B
See Test Diagram
Disable Time EN to A or B
Conditions
(1)
See Test Diagram
1.5
1.5
Com.
Min.
Max.
0.3
9.0
9.0
ns
Units
Switching Characteristics over 2.5V Operating Range
Parameters
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
Description
R
Conditions
(1)
See Test Diagram
See Test Diagram
4
SI
Min.
1.5
1.5
Notes:
1. See test circuit and waveforms.
2. This parameter is guaranteed but not tested on Propagation Delays.
3. The switch contributes no propagational delay other than the RC delay of the On-Resistance of the switch and the load capacitance. The time
constant for the switch alone is of the order of 0.30ns for 10pF load. Since this time constant is much smaller than the rise/fall times of typical
driving signals, it adds very little propagational delay to the system. Propagational delay of the switch when used in a system is determined by
the driving circuit on the driving side of the switch and its interaction with the load on the driven side.
O
Com.
N
Max.
0.3
15.0
12.0
Propogation Delay
(2,3)
A to B, B to A
Enable Time EN to A or B
Disable Time EN to A or B
VE
Units
ns
Notes:
1. See test circuit and waveforms.
2. This parameter is guaranteed but not tested on Propagation Delays.
3. The switch contributes no propagational delay other than the RC delay of the On-Resistance of the switch and the load capacitance. The time
constant for the switch alone is of the order of 0.30ns for 10pF load. Since this time constant is much smaller than the rise/fall times of typical
driving signals, it adds very little propagational delay to the system. Propagational delay of the switch when used in a system is determined by
the driving circuit on the driving side of the switch and its interaction with the load on the driven side.
D
09-0014
R
AF
T
PS9042A
01/06/09
PI3CH3245
Low Voltage, 5Ω, 8-Channel
2-Port
NanoSwitch
™
Test Circuit for Electrical Characteristics
(1)
Switch Positions
Test
t
PLZ
, t
PZL
t
PHZ
, t
PZH
Prop Delay
Switch
6.0V
GND
Open
Test Circuit for Dynamic Electrical Characteristics
D
09-0014
R
AF
T
VE
5
PS9042A
R
Notes:
•
C
L
= Load capacitance: includes jig and probe capacitance.
•
R
T
= Termination resistance: should be equal to Z
OUT
of the Pulse Generator
•
All input impulses are supplied by generators having the following characteristics: PRR
10 MHz, Z
O
= 50-ohm, t
R
2.5ns, t
F
2.5ns.
•
The outputs are measured one at a time with one transition per measurement.
SI
O
01/06/09
N
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