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Datasheet: PI2PCIE412-DZHE (Pericom Semiconductor Corporation)

Enhanced, 1.8V, PCI Express Compliant, 4-Differential Channel, 2:1 Mux/DeMux Switch, w/ Single Enable

 

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Pericom Semiconductor Corporation
1
PS8788B 01/23/06
Features
4 Differential Channel, 2:1 Mux/DeMux
PCI Express signal compliance
Low Bit-to-Bit Skew , 10ps max (between '+' and '-' bits)
Low Crosstalk: -65dB@10 MHz
Low Off Isolation: -65dB@10 MHz
V
CC
Operating Range: +1.5V to +2.0V
ESD Tolerance: 8kV HBM I/O; 2kV HBM select pin
Low channel-to-channel skew, 35ps max
Packaging (Pb-free & Green):
42-contact, TQFN (ZH42)
Description
Pericom Semiconductor's PI2PCIE412-D is an 8 to 4 differential
channel multiplexer/demultiplexer switch. This solution can
switch 2 full PCI Express lanes to one of two locations. Using
a unique design technique, Pericom has been able to minimize
the impedance of the switch such that the attenuation observed
through the switch is negligible. The unique design technique
also offers a layout targeted for PCI Express signals, which
minimizes the channel to channel skew as well as channel to
channel crosstalk as required by the PCI Express specification.
Application
Switch a PCI-Express lane output between two PCI Express lane
inputs.
Block Diagram
Pin Description
PI2PCIE412-D
Enhanced, 1.8V, PCI Express Compliant,
4-Differential Channel, 2:1 Mux/DeMux Switch,
w/ Single Enable
SEL
A
7
A
6
A
5
A
4
A
3
A
2
A
1
A
0
1
B
1
0
B
1
3B
1
2
B
1
1
B
2
0
B
2
3
B
2
2
B
2
5
B
1
4
B
1
7
B
1
6
B
1
5
B
2
4
B
2
7
B
2
6
B
2
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
42 41 40 39
18 19 20 21
0
B
1
1
B
1
2
B
1
3
B
1
0
B
2
1
B
2
2
B
2
3
B
2
V
DD
4
B
1
5
B
1
6
B
1
7
B
1
4
B
2
5
B
2
6
B
2
7
B
2
GND
A
0
A
1
GND
V
DD
A
2
A
3
V
DD
SEL
GND
A
4
A
5
V
DD
GND
A
6
A
7
GND
V
DD
GND
V
DD
GND
V
DD
GND
V
DD
GND
GND
Truth Table
Function
SEL
A
N
to
N
B
1
L
A
N
to
N
B
2
H
2
PS8788B 01/23/06
PI2PCIE412-D
Enhanced, 1.8V, PCI Express Compliant,
4-Differential Channel, 2:1 Mux/DeMux Switch
Storage Temperature ....................................................65C to +150C
Supply Voltage to Ground Potential ................................0.5V to +2.5V
DC Input Voltage ...............................................................0.5V to V
CC
DC Output Current .......................................................................120mA
Power Dissipation ...........................................................................0.5W
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. Expo-
sure to absolute maximum rating conditions for extended
periods may affect reliability.
Maximum Ratings
(Above which useful life may be impaired. For user guidelines, not tested.)
DC Electrical Characteristics for Switching over Operating Range
(T
A
= 40C to +85C, V
CC
= 1.5V to 2.0V)
Paramenter
Description
Test Conditions
(1)
Min
Typ
(2)
Max
Units
VIH
Input HIGH Voltage
Guaranteed HIGH level
0.65 x V
CC
V
VIL
Input LOW Voltage
Guaranteed LOW level
0.5
0.35 x V
CC
VIK
Clamp Diode Voltage
V
CC
= Max., I
IN
= 18mA
0.7
1.2
IIH
Input HIGH Current
V
CC
= Max., V
IN
= V
CC
5
A
IIL
Input LOW Current
V
CC
= Max., V
IN
= GND
5
Dynamic Electrical Characteristics Over the Operating Range
(TA= -40 to +85C, VCC = 1.8V10%, GND=0V)
Parameter
Description
Test Conditions
Min.
Typ.
(2)
Max.
Units
X
TALK
Crosstalk
See Fig. 1 for Measurement Setup, f = 10 MHz
-65
dB
O
IRR
OFF Isolation
See Fig. 2 for Measurement Setup, f = 10 MHz
-65
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
= 1.8V, T
A
= 25C ambient and maximum loading.
Power Supply Characteristics
Parameters
Description
Test Conditions
(1)
Min.
Typ.
(2)
Max.
Units
I
CC
Quiescent Power Supply Current
V
CC
= Max., V
IN
= GND or V
CC
200
A
3
PS8788B 01/23/06
PI2PCIE412-D
Enhanced, 1.8V, PCI Express Compliant,
4-Differential Channel, 2:1 Mux/DeMux Switch
Fig 1. Crosstalk Setup
Fig 2. Off-isolation setup
4
PS8788B 01/23/06
PI2PCIE412-D
Enhanced, 1.8V, PCI Express Compliant,
4-Differential Channel, 2:1 Mux/DeMux Switch
Fig 3. Crosstalk
Fig 4. Off Isolation
5
PS8788B 01/23/06
PI2PCIE412-D
Enhanced, 1.8V, PCI Express Compliant,
4-Differential Channel, 2:1 Mux/DeMux Switch
Switching Characteristics
(TA= -40 to +85C, VCC = 1.8V10%)
Paramenter
Description
Min.
Max.
Units
tPZH, tPZL Line Enable Time - SEL to AN, BN
0.5
8.0
ns
tPHZ, tPLZ Line Disable Time - SEL to AN, BN
0.5
4.0
tb-b
Bit-to-bit skew within the same differential pair
10
ps
tch-ch
Channel-to-channel skew
35
ps
R
T
4pF
C
L
V
CC
V
IN
V
OUT
200-ohm
200-ohm
2 x V
CC
Pulse
Generator
D.U.T
Test Circuit for Electrical Characteristics
(1-5)
Notes:
1. C
L
= Load capacitance: includes jig and probe capacitance.
2. R
T
= Termination resistance: should be equal to Z
OUT
of the Pulse Generator
3. Output 1 is for an output with internal conditions such that the output is low except when disabled by the output control.
output 2 is for an output with internal conditions such that the output is high except when disabled by the output control.
4. All input impulses are supplied by generators having the following characteristics: PRR MHz, Z
O
= 50, t
R
2.5ns, t
F
2.5ns.
5. The outputs are measured one at a time with one transition per measurement.
Switch Positions
Test
Switch
t
PLZ
, t
PZL
(output on B-side)
2 x V
CC
t
PHZ
, t
PZH
(output on B-side)
GND
Prop Delay
Open
Switching Waveforms
Voltage Waveforms Enable and Disable Times
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