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PS8814 02/08/06
COMPANY CONFIDENTIAL
Block Diagram
PI3HDMI412-A
4-Differential Channel, 2:1 Mux/DeMux, DVI/HDMI Compliant
Signal Switch based on TMDS Signaling Standard
Features
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.
Pin Descriptions (Top View)
42-pin TQFN
48-pin BQSOP
V
SS
V
DD
V
SS
V
SS
C0+
C0-
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
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
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
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PS8814 02/08/06
PI3HDMI412-A
4-Differential Channel, 2:1 Mux/DeMux, DVI/HDMI
Compliant Signal Switch based on TMDS Signaling Standard
COMPANY CONFIDENTIAL
Truth Table
Function
SEL
N to N
A
L
N to N
B
H
Storage Temperature....................................65C to +150C
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.
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)
Paramenter
Description
Test Conditions
Min.
Typ
(2)
Max.
Units
VIH
(3)
Input HIGH Voltage
Guaranteed HIGH level 0.65(V
DD
-V
SS
)+V
SS
V
VIL
(3)
Input LOW Voltage
Guaranteed LOW level
0.5+V
SS
0.35(V
DD
-V
SS
)+V
SS
VIK
Clamp Diode Voltage V
DD
=Max., I
IN
=18mA
0.7+V
SS
1.2+V
SS
IIH
Input HIGH Current
V
DD
=Max., V
IN
=V
DD
5
A
IIL
Input LOW Current
V
DD
=Max., V
IN
=V
SS
5
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
= 25C ambient and maximum loading.
3. V
IH
+ V
IL
are for SEL input only.
Pin Description
Pin #
Pin
Name
Description
5, 8, 13, 18, 20, 30,
40, 42
V
DD
+ Power supply 3.30
1, 4, 10, 14, 17, 19,
21, 39, 41
V
SS
- Power supply
9
SEL
Select pin, see truth table
2, 3, 6, 7, 11, 12, 15,
16, 31-38, 22-29
CX
tx
Data + Clk bits for TMDS signal
DC Power Supply Characteristics
Paramenter
Description
Min.
Max.
Units
VDD
Positive Power Supply
3.0
3.6
V
VSS
Negative Power Supply
1.5
1.6
V
3
PS8814 02/08/06
PI3HDMI412-A
4-Differential Channel, 2:1 Mux/DeMux, DVI/HDMI
Compliant Signal Switch based on TMDS Signaling Standard
COMPANY CONFIDENTIAL
Power Supply Characteristics
Parameters
Description
Test Conditions
(1)
Min.
Typ.
(2)
Max.
Units
I
CC
Quiescent Power Supply Current
V
DD
= Max., V
IN
= V
DD
or V
SS
200
A
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
= 25C ambient and maximum loading.
Dynamic Electrical Characteristics Over the Operating Range
(TA= -40 to +85C)
Parameter
Description
Test Conditions
Min.
Typ.
(2)
Max.
Units
X
TALK
Crosstalk
See Fig. 1 for Measurement
Setup,
f = 825 MHz
-25
dB
O
IRR
OFF Isolation
See Fig. 2 for Measurement
Setup,
f = 825 MHz
-30
DR
Data Rate
4.0
Gbps
Fig 1. Crosstalk Setup
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PS8814 02/08/06
PI3HDMI412-A
4-Differential Channel, 2:1 Mux/DeMux, DVI/HDMI
Compliant Signal Switch based on TMDS Signaling Standard
COMPANY CONFIDENTIAL
Fig 2. Off-isolation setup
Fig 3. Crosstalk
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PS8814 02/08/06
PI3HDMI412-A
4-Differential Channel, 2:1 Mux/DeMux, DVI/HDMI
Compliant Signal Switch based on TMDS Signaling Standard
COMPANY CONFIDENTIAL
Notes:
1. For measurement setup, please see "Test Circuit For Electrical Characteristic" on page 6, and "Switching waveforms" on page 7
Switching Characteristics
(TA= -40 to +85C, V
SS
=0V, V
DD
=1.8V 10%)
Paramenter
Description
Min.
Typ.
(2)
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
Fig 4. Off Isolation
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