CBTU04082
1.8 V, wide bandwidth, 4 differential channel,
2 : 1 multiplexer/demultiplexer switch with single enable
Rev. 2 — 13 July 2010
Product data sheet
1. General description
CBTU04082 is an 8-to-4 differential channel multiplexer/ demultiplexer switch. The
CBTU04082 can switch four differential signals to one of two locations. Using a unique
design technique, NXP has minimized the impedance of the switch such that the
attenuation observed through the switch is negligible, and also minimizes the
channel-to-channel skew as well as channel-to-channel crosstalk, as required by the
high-speed serial interface.
2. Features and benefits
4 differential channel, 2 : 1 multiplexer/demultiplexer
High-speed signal switching; 5.0 Gbit/s
Low intra-pair skew: 10 ps maximum (between positive and negative bits)
Low crosstalk:
−23
dB at 3 GHz
Low off-state isolation:
−23
dB at 3 GHz
V
DD
operating range: 1.8 V
±
10 %
ESD tolerance:
6 kV HBM
1 kV CDM
Low inter-pair skew: 35 ps maximum
Fit, form and function compatible to PI2PCIE2412
HVQFN42 package
3. Applications
Routing of high-speed differential signals with low signal attenuation
PCIe Gen2
DisplayPort 1.1a
LVDS
SATA 3 Gbit/s
NXP Semiconductors
CBTU04082
1.8 V, wide bandwidth, 4 differential channel, 2 : 1 MUX/deMUX switch
4. Ordering information
Table 1.
Ordering information
Package
Name
CBTU04082BS
HVQFN42
Description
plastic thermal enhanced very thin quad flat package; no leads;
42 terminals; body 3.5
×
9
×
0.85 mm
Version
SOT1144-1
Type number
5. Functional diagram
A0_P
A0_N
A1_P
A1_N
B0_P
B0_N
B1_P
B1_N
C0_P
C0_N
C1_P
C1_N
A2_P
A2_N
A3_P
A3_N
B2_P
B2_N
B3_P
B3_N
C2_P
C2_N
C3_P
C3_N
SEL
002aae642
Fig 1.
Functional diagram of CBTU04082
CBTU04082
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 2 — 13 July 2010
2 of 15
NXP Semiconductors
CBTU04082
1.8 V, wide bandwidth, 4 differential channel, 2 : 1 MUX/deMUX switch
6. Pinning information
6.1 Pinning
41 GND
39 GND
38 B0_P
37 B0_N
36 B1_P
35 B1_N
34 C0_P
33 C0_N
32 C1_P
31 C1_N
29 B2_P
28 B2_N
27 B3_P
26 B3_N
25 C2_P
GND
(exposed
thermal pad)
V
DD
18
GND 19
V
DD
20
GND 21
24 C2_N
23 C3_P
22 C3_N
002aae643
42 V
DD
GND
A0_P
A0_N
GND
V
DD
A1_P
A1_N
V
DD
SEL
1
2
3
4
5
6
7
8
9
CBTU04082BS
30 V
DD
GND 10
A2_P 11
A2_N 12
V
DD
13
GND 14
A3_P 15
A3_N 16
GND 17
Transparent top view
Fig 2.
Pin configuration for HVQFN42
CBTU04082
All information provided in this document is subject to legal disclaimers.
40 V
DD
© NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 2 — 13 July 2010
3 of 15
NXP Semiconductors
CBTU04082
1.8 V, wide bandwidth, 4 differential channel, 2 : 1 MUX/deMUX switch
6.2 Pin description
Table 2.
Symbol
A0_P
A0_N
A1_P
A1_N
A2_P
A2_N
A3_P
A3_N
B0_P
B0_N
B1_P
B1_N
B2_P
B2_N
B3_P
B3_N
C0_P
C0_N
C1_P
C1_N
C2_P
C2_N
C3_P
C3_N
SEL
Pin description
Pin
2
3
6
7
11
12
15
16
38
37
36
35
29
28
27
26
34
33
32
31
25
24
23
22
9
Type
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
operation mode select
CMOS
single-ended input
SEL = 0: A
→
B
SEL = 1: A
→
C
V
DD
GND
5, 8, 13, 18, 20, power
30, 40, 42
1, 4, 10, 14, 17, power
19, 21, 39, 41,
center pad
positive supply voltage, 1.8 V to 2.0 V (± 0.1 V)
supply ground
channel 3, port C differential signal input/output
channel 2, port C differential signal input/output
channel 1, port C differential signal input/output
channel 0, port C differential signal input/output
channel 3, port B differential signal input/output
channel 2, port B differential signal input/output
channel 1, port B differential signal input/output
channel 0, port B differential signal input/output
channel 3, port A differential signal input/output
channel 2, port A differential signal input/output
channel 1, port A differential signal input/output
Description
channel 0, port A differential signal input/output
CBTU04082
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 2 — 13 July 2010
4 of 15
NXP Semiconductors
CBTU04082
1.8 V, wide bandwidth, 4 differential channel, 2 : 1 MUX/deMUX switch
7. Functional description
Refer to
Figure 1 “Functional diagram of CBTU04082”.
7.1 Function selection
Table 3.
SEL
L
H
Function selection
Function
An to Bn
An to Cn
8. Limiting values
Table 4.
Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134).
Symbol
V
DD
V
I
I
O
P
T
stg
Parameter
supply voltage
input voltage
output current
power dissipation
storage temperature
Conditions
referenced to GND
Min
−0.5
−0.5
-
-
−65
Max
+2.5
V
DD
120
0.5
+150
Unit
V
V
mA
W
°C
9. Static characteristics
Table 5.
Static characteristics
V
DD
= 1.8 V
±
10 %; T
amb
=
−
40
°
C to +85
°
C; unless otherwise specified.
Symbol
I
DD
I
IH
I
IL
V
IH
V
IL
V
IK
[1]
[2]
Parameter
supply current
HIGH-level input current
LOW-level input current
HIGH-level input voltage
LOW-level input voltage
input clamping voltage
Conditions
V
DD
= max.; V
I
= GND or V
DD
V
DD
= max.; V
I
= V
DD
V
DD
= max.; V
I
= GND
guaranteed HIGH level
guaranteed LOW level
V
DD
= max.; I
I
=
−18
mA
Min
-
-
-
0.65V
DD
−0.5
-
Typ
[1]
-
-
-
-
-
−0.7
Max
4
±5
[2]
±5
[2]
-
0.15V
DD
−1.2
Unit
mA
μA
μA
V
V
V
Typical values are at V
DD
= 1.8 V, T
amb
= 25
°C,
and maximum loading.
Input leakage current is
±50 μA
if differential pairs are pulled to HIGH and LOW.
CBTU04082
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2010. All rights reserved.
Product data sheet
Rev. 2 — 13 July 2010
5 of 15
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