1PS9069 08/03/09
Features
2 Differential Channel, 2:1 Mux/DeMux
• PCI Express® 2.0 Performance, 5.0Gbps
Pinout optimized for placement between two PCIe slots
• Bi-directional operation
Low Bit-to-Bit Skew, 5ps max
Low Crosstalk: -26dB@5 GHz
Low Off Isolation: -20dB@5 GHz
• VDD Operating Range: +3.3V
ESD Tolerance: 2kV HBM
Packaging (Pb-free & Green):
– 28 contact TQFN (ZH)
Description
Pericom Semiconductors PI3PCIE2215 is a 4 to 2 differential chan-
nel multiplexer/demultiplexer switch. The PI3PCIE family of switch
solutions is fully compliant with PCIe® signals at 5.0Gbps. Due to
its low bit-to-bit skew, high channel-to-channel noise isolation and
high bandwidth, this product is ideal for PCI Express switching.
Application
Switch a PCI Express® lane output between two PCI Express lane
inputs
Block Diagram Pin Description (Top-side view)
PI3PCIE2215
3.3V, PCI Express® 1-lane,
2:1 Mux/DeMux Switch
BI-
BI+
AI-
AI+ AOa-
AOa+
AOb-
AOb+
BOa-
BOa+
BOb-
BOb+
SEL
Truth TableFunction SEL
xIy to xOay L
xIy to xOby H
AI+
AI-
AOb+
AOb-
GND
AOa+
AOa-
GND
GND
VDD
BOa+
BOa-
SEL
GND
VDD
GND
VDD
VDD
GND
VDD
GND
1
2
3
4
5
6
7
8
9
10
24
23
22
21
20
19
18
17
16
15
28 27 26 25
11 12 13 14
GND
BI+
BI-
BOb+
BOb-
NC
VDD
VDD
09-0033
2
PI3PCIE2215
3.3V, PCI Express®, 1-Lane,
2:1 Mux/DeMux Switch
PS9069 08/03/09
Signal Descriptions
Pin Number Pin Name Type Description
1
2
AI+
AI-
Differential input Differential input pair from PCIE signal source. Signal is
passed through to the AOa+, AOa- pin respectively when
SEL=0. Signal is passed through to the AOb+, AOb- pin
respectively when SEL = 1.
23
22
AOa+
AOa-
Differential pass-through
input
Differential analog pass-through output. Signal from AI+
and AI- is passed through AOa+ and AOa- respectively
when SEL=0.
3
4
AOb+
AOb-
Differential pass-through
input
Differential analog pass-through output. Signal from AI+
and AI- is passed through AOa+ and AOa- respectively
when SEL=1.
5
6
BI+
BI-
Differential input Differential input pair from PCIE signal source. Signal is
passed through to the BOa+, BOa- pin respectively when
SEL=0. Signal is passed through to the BOb+, BOb- pin
respectively when SEL = 1.
19
18
BOa+
BOa-
Differential pass-through
input
Differential analog pass-through output. Signal from BI+
and BI- is passed through BOa+ and BOa- respectively
when SEL=0.
7
8
BOb+
BOb-
Differential pass-through
input
Differential analog pass-through output. Signal from BI+
and BI- is passed through BOb+ and BOb- respectively
when SEL=1.
11, 13, 15, 21, 24,
26, 28,
(center pad)
GND Ground input Ground
10 NC - No Connect - Reserved, do not connect
16 SEL 3.6V tolerant low-voltage
single-ended input
SEL controls the mux through a ow-through latch.
9, 12, 14, 17, 20,
25, 27
VDD Power supply Power, 3.3V ±10%
09-0033
3
PI3PCIE2215
3.3V, PCI Express®, 1-Lane,
2:1 Mux/DeMux Switch
PS9069 08/03/09
Recommended Operating Conditions
Symbol Parameter Conditions Min Typ Max Units
VDD 3.3V Power Supply 3.0 3.3 3.6 V
IDD Total current from VDD
3.3V supply
0 2.5 mA
TCASE Case temperature range
for operation within spec.
-40 85 Celsius
Electrical Characteristics
Storage Temperature ....................................................–65°C to +150°C
Supply Voltage to Ground Potential ................................–0.5V to +4.6V
DC Input Voltage .............................................................. –0.5V to VDD
DC Output Current ....................................................................... 120mA
Power Dissipation ........................................................................... 0.5W
Note: Stresses greater than those listed under MAX I MUM
RAT INGS may cause permanent damage to the de vice. This
is a stress rating only and func tion al op er a tion of the device
at these or any other conditions above those indicated in the
operational sections of this spec i ca tion is not implied. Expo-
sure to absolute max i mum rating con di tions for extended
periods may affect re li abil i ty.
Maximum Ratings
(Above which useful life may be impaired. For user guide lines, not tested.)
DC Electrical Characteristics (TA = –40°C to +85°C, VDD = 3.3V ± 10%)
Parameter Description Test Conditions Min Typ(1) Max Units
VIH-SEL(2) Input high level, SEL input 2.0 3.6 V
VIL-SEL(2) Input Low Level, SEL
input
0 0.8 V
IIN_SEL(2) Input Leakage Current,
SEL input
Measured with input at VIH-SEL max and
VIL-SEL min
–10 10 μA
RON On Resistance VDD = Min., VIN = 1.3V, IIN = 40mA 12 Ohm
CON On Channel Capacitance VIN = 0, VDD = 3.3V 2.0 pF
Note:
1. Typical values are at VDD = 3.3V, TA = 25°C ambient and maximum loading.
Dynamic Electrical Characteristics for xI±, xOy±
Parameter Description Test Conditions Min. Typ.(1) Max. Units
DDIL Differential Insertion Loss
f=1.2GHz
f=2.5GHz
f=5.0GHz
f=7.5GHz
-1.5
-2.0
-5.0
-9.0
dB
DDILOFF Differential Off Isolation f= 0 to 3.0GHz -20.0
DDRL Differential Return Loss
f= 0 to 2.8GHz
f= 2.8 to 5.0GHz
f= 5.0 to 7.5GHz
-14.0
-8.0
-4.0
DDNEXT Near End Crosstalk
f= 0 to 2.5GHz
f= 2.5 to 5.0GHz
f= 5.0 to 7.5GHz
-32.0
-26.0
-20.0
09-0033
4
PI3PCIE2215
3.3V, PCI Express®, 1-Lane,
2:1 Mux/DeMux Switch
PS9069 08/03/09
Switching Characteristics (TA= -40º to +85ºC, VDD = 3.3V±10%)
Parameter Description Test Conditions Min. Typ. Max. Units
tPZH, tPZL Line Enable Time - SEL to xI+/-, xOy+/- See "Test Circuit for
Electrical Characteristics" 0.5 12.0 ns
tPHZ, tPLZ Line Disable Time - SEL to xI+/-, xOy+/- See "Test Circuit for
Electrical Characteristics" 0.5 12.0 ns
tb-b Bit-to-bit skew within the same differential
pair
See "Test Circuit for
Electrical Characteristics" 7ps
tch-ch Channel-to-channel skew See "Test Circuit for
Electrical Characteristics" 35 ps
5.0 Gbps Receive Eye Mask (-3.5dB)
09-0033
5
PI3PCIE2215
3.3V, PCI Express®, 1-Lane,
2:1 Mux/DeMux Switch
PS9069 08/03/09
Differential Insertion Loss
Differential Return Loss
09-0033
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PI3PCIE2215
3.3V, PCI Express®, 1-Lane,
2:1 Mux/DeMux Switch
PS9069 08/03/09
Differential Off Isolation
Differential Crosstalk
09-0033
7
PI3PCIE2215
3.3V, PCI Express®, 1-Lane,
2:1 Mux/DeMux Switch
PS9069 08/03/09
Test Circuit
Test Circuit
Test Circuit
09-0033
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PI3PCIE2215
3.3V, PCI Express®, 1-Lane,
2:1 Mux/DeMux Switch
PS9069 08/03/09
Switch Positions
Test Switch
tPLZ, tPZL 2 x VDD
tPHZ, tPZH GND
Prop Delay Open
Switching Waveforms
Voltage Waveforms Enable and Disable Times
tPLZ
VDD/2 VDD/2
VDD
VOH
0V
VOL
VDD/2
VDD/2
tPHZ
tPZL
tPZH
Output 1
Output 2
VOL
VOH
SEL
VOL + 0.15V
VOH – 0.15V
R
T
4pF
C
L
V
DD
V
IN
V
OUT
200-ohm
200-ohm
2 x V
DD
Pulse
Generator D.U.T
Test Circuit for Electrical Characteristics(1-5)
Notes:
1. CL = Load capacitance: includes jig and probe capacitance.
2. RT = Termination resistance: should be equal to ZOUT 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, ZO = 50Ω, tR 2.5ns, tF 2.5ns.
5. The outputs are measured one at a time with one transition per measurement.
09-0033
9
PI3PCIE2215
3.3V, PCI Express®, 1-Lane,
2:1 Mux/DeMux Switch
PS9069 08/03/09
Differential Inputs/Output Characteristics for Gen2 speeds
Symbol Parameter Min Nom Max Units Comments
Tbit Unit Interval 199.94 200.00 200.06 ps De ned by Gen2 spec.
VRX-Diffp-p Differential Input Peak
to Peak Voltage
TBD 1.200 V VRX-DIFFp-p = 2*|VRX-
D+ - VRX-D-|. Applies to
IN_S and RX_IN signals.
TRX-EYE Minimum Eye Width at
IN_D input pair.
TBD Tbit
VCM-AC-pp AC Peak Common-
Mode Input Voltage
100 mV VCM-AC-pp = |VRX-D+
+ VRX-D-|/2 - VRX-CM-
DC.
VRX-CM-DC = DC(avg)
of |VRX-D++VRX-D-|/2
VCM-AC-pp includes all
frequencies above 30kHz.
ZRX-DIFF-DC DC Differential Input
Impedance
80 100 120  Rx DC Differential Mode
impedance
ZRX-DC DC Input Impedance 40 50 60 Required IN_D+ as well
as IN_D- DC impedance
(50 +/- 20% tolerance).
Includes mux resistance.
VRX-Bias Rx input termination
voltage
0 2.0 V Intended to limit power-
up stress on PCIE output
buffers.
Applications Information
09-0033
10
PI3PCIE2215
3.3V, PCI Express®, 1-Lane,
2:1 Mux/DeMux Switch
PS9069 08/03/09
Package Mechanical: 28-Contact TQFN (ZH)
Pericom Semiconductor Corporation • 1-800-435-2336 www.pericom.com
Ordering Information
Ordering Code Package Code Package Type
PI3PCIE2215ZHE ZH Pb-free & Green, 28-Contact TQFN
Notes:
Thermal characteristics can be found on the company web site at www.pericom.com/packaging/
"E" denotes Pb-free and Green
Adding an "X" at the end of the ordering code denotes tape and reel packaging
DESCRIPTION: 28-Contact, Very Thin Quad Flat No-Lead, TQFN
PACKAGE CODE: ZH28
DOCUMENT CONTROL #: PD-2034 REVISION: B
DATE: 01/26/09
09-0066
09-0033