COMPANY CONFIDENTIAL
PI3HDMI412-A
4-Differential Channel, 2:1 Mux/DeMux, DVI/HDMI Compliant
Signal Switch based on TMDS Signaling Standard
Features
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4-Differential Channel 2:1 Mux/DeMux
TMDS Signaling
Data Rate: 1.65Gbps
Crosstalk: -25dB@825MHz
Switching speed: 4ns
Isolation: -30dB@825MHz
ESD: Data bits @ 8kV HBM, select bit @ 2 kV HBM
Near-Zero Prop Delay: 250ps max.
Low bit-to-bit skew
Hot insertion capable
Enable/Disable Time: 9ns
Bidirectional
Packaging (Pb-free & Green):
- 42-pin TQFN (ZH)
- 48-pin BQSOP (B)
Description
Pericom Semiconductor’s PI3HDMI series of switch circuits are
targeted for high-resolution video networks that are based on DVI/
HDMI standards, and TMDS signal processing. The PI3HDMI412-A
is a 8- to 4-Channel Mux/DeMux Switch. The device multiplexes
differential signals to one of two corresponding outputs. The switch
is bidirectional and offers little or no attenuation of the high-speed
signals at the outputs. It is designed for low bit-to-bit skew and
high channel-to-channel noise isolation.
The maximum DVI/HDMI data rate of 1.65Gbps provides the
resolution required by the next generation HDTV and PC graphics.
Three differential channels are used for data (video signals for DVI
or audio/video signals for HDMI), and one differential channel is
used for Clock for decoding the TMDS signals at the outputs.
Because of its passive bidirectional feature, this switch can be
used either at the video drivers side or at the receiver side. For PC
graphics applications, the device sits at the drivers side to switch
between multiple display units such as PC LCD monitor, projector,
TV, etc. For consumer video applications, the device sits at the
receiver end to switch between the source components such as
DVD, D-VHS, STB, etc.
Block Diagram
½
½½
½
½½
½
½½
½
½½
½
½½½
½
½½½
½
½½½
½
½½½
½
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½
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½
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½
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½
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½
½½½
½
½½½
½
½½½
½
½½½
½
½½½
½
½½½
½
½½½
½½½
Pin Descriptions (Top View)
½
½½
½½½
½
½½
½½½
½½½
½½½
½½½
½½½
½
½½
½½½
½½½
½
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½
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½½½
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½
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½
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½
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½
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½
½
½
½
½
½
½
½
½
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½½
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½½
½½
½½
½½
½½
½½ ½½ ½½ ½½
½½½
½½
½½
½½
½½
½½
½½
½½
½½
½½
½½
½½
½½
½½
½½
½½
½½
½½
½½½
½
½½½
½
½½½
½
½½½
½
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½
½½½
½
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½
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½
½
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½
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½
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½
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½
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½
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½
½½½
½
½½½
½
V
SS
V
DD
C1+
C1-
V
SS
V
DD
SEL
V
SS
C2+
C2-
V
DD
V
SS
C3+
C3-
V
SS
V
SS
V
DD
V
SS
V
SS
V
DD
V
SS
V
SS
C0+
C0-
½½ ½½ ½½ ½½
½
½½
½½½
½
½½
½½½
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
V
DD
V
SS
C0+
A
C0-
A
C1+
A
C1-
A
V
SS
C0+
B
C0-
B
C1+
B
C1-
B
V
SS
V
DD
C2+
A
C2-
A
C3+
A
C3-
A
V
SS
C2+
B
C2-
B
C3+
B
C3-
B
V
SS
V
DD
42-pin TQFN
1
48-pin BQSOP
PS8814
02/08/06
COMPANY CONFIDENTIAL
PI3HDMI412-A
4-Differential Channel, 2:1 Mux/DeMux, DVI/HDMI
Compliant Signal Switch based on TMDS Signaling Standard
Pin Description
Truth Table
Function
N to
N
A
N to N
B
SEL
L
H
Pin #
5, 8, 13, 18, 20, 30,
40, 42
1, 4, 10, 14, 17, 19,
21, 39, 41
9
2, 3, 6, 7, 11, 12, 15,
16, 31-38, 22-29
Pin
Name
V
DD
V
SS
SEL
CX
tx
Description
+ Power supply 3.30
- Power supply
Select pin, see truth table
Data + Clk bits for TMDS signal
Maximum Ratings
(Above which useful life may be impaired. For user guidelines, not tested.)
Storage Temperature....................................–65°C to +150°C
Supply Voltage to V
SS
Potential...............–0.5V to +2.5V
DC Input Voltage ...............................................V
SS
to V
DD
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 func-
tional 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 reliability.
DC Power Supply Characteristics
Paramenter
VDD
VSS
Description
Positive Power Supply
Negative Power Supply
Min.
3.0
1.5
Max.
3.6
1.6
Units
V
V
DC Electrical Characteristics for Switching over Operating Range
(T
A
= –40°C to +85°C)
Paramenter
VIH
(3)
VIL
(3)
VIK
IIH
IIL
Description
Input HIGH Voltage
Input LOW Voltage
Input HIGH Current
Input LOW Current
Test Conditions
Guaranteed HIGH level
Guaranteed LOW level
V
DD
=Max., V
IN
=V
DD
V
DD
=Max., V
IN
=V
SS
Min.
0.65(V
DD
-V
SS
)+V
SS
–0.5+V
SS
–0.7+V
SS
0.35(V
DD
-V
SS
)+V
SS
–1.2+V
SS
±5
±5
µA
V
Typ
(2)
Max.
Units
Clamp Diode Voltage V
DD
=Max., I
IN
=–18mA
Notes:
1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at
T
A
= 25°C ambient and maximum loading.
3. V
IH
+ V
IL
are for SEL input only.
2
PS8814
02/08/06
COMPANY CONFIDENTIAL
PI3HDMI412-A
4-Differential Channel, 2:1 Mux/DeMux, DVI/HDMI
Compliant Signal Switch based on TMDS Signaling Standard
Power Supply Characteristics
Parameters
I
CC
Description
Quiescent Power Supply Current
Test Conditions
(1)
V
DD
= Max., V
IN
= V
DD
or V
SS
Min.
Typ.
(2)
200
Max.
Units
µA
Notes:
1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at
T
A
= 25°C ambient and maximum loading.
Dynamic Electrical Characteristics Over the Operating Range
(TA= -40º to +85ºC)
Parameter
X
TALK
Description
Crosstalk
Test Conditions
See Fig. 1 for Measurement
Setup,
f = 825 MHz
See Fig. 2 for Measurement
Setup,
f = 825 MHz
Min.
Typ.
(2)
-25
Max.
Units
dB
-30
4.0
Gbps
O
IRR
DR
OFF Isolation
Data Rate
½½½½½½½
½
½½½½½½½½
½½½½½½
½½½½½½
½½½½½½
½
½½½½½½½½½½½½
½½½
½½½½½
½
½½½
½½½½
Fig 1. Crosstalk Setup
3
PS8814
02/08/06
COMPANY CONFIDENTIAL
PI3HDMI412-A
4-Differential Channel, 2:1 Mux/DeMux, DVI/HDMI
Compliant Signal Switch based on TMDS Signaling Standard
½½½½½½½
½
½½½½½½½½
½½½½½½
½½½½½½
½½½½½½
½½½
½½½½
½
½
½½½½½½½½½½½½
Fig 2. Off-isolation setup
Fig 3. Crosstalk
4
PS8814
02/08/06
COMPANY CONFIDENTIAL
PI3HDMI412-A
4-Differential Channel, 2:1 Mux/DeMux, DVI/HDMI
Compliant Signal Switch based on TMDS Signaling Standard
Fig 4. Off Isolation
Switching Characteristics
(TA= -40º to +85ºC, V
SS
=0V, V
DD
=1.8V ±10%)
Paramenter
tPZH, tPZL
tPHZ, tPLZ
Description
Line Enable Time - SEL to AN, BN
Line Disable Time - SEL to AN, BN
Min.
0.5
0.5
Typ.
(2)
Max.
8.0
4.0
Units
ns
Notes:
1. For measurement setup, please see “Test Circuit For Electrical Characteristic” on page 6, and “Switching waveforms” on page 7
5
PS8814
02/08/06