NLAS8252 [ONSEMI]
DP3T Switch for USB/UART/Data Multiplexing; DP3T开关为USB / UART /数据复用
| 型号： | NLAS8252 |
| 厂家： | 
ONSEMI |
| 描述： | DP3T Switch for USB/UART/Data Multiplexing |
| 文件： | 总8页 (文件大小：118K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
NLAS8252
DP3T Switch for
USB/UART/Data
Multiplexing
Brief Description
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MARKING
DIAGRAM
The NLAS8252 is a DP3T switch for combined UART and USB 2.0
full speed data applications. It allows portable systems to use a single
external port to transmit and receive signals to and from three separate
locations within the portable system. It is comprised of two switches,
each with a single common I/O that alternates between 3 terminals.
They are operated together to allow three data sources, such as a USB
or UART transceiver, to pass differential data through a shared USB
connector port.
1
52M
G
UQFN12
MU SUFFIX
CASE 523AE
The NLAS8252 features low R - 4 W (max) at 4.2 V V , 5 W
ON
CC
(typ) at a 3.3 V V . It also features low C , < 30 pF (max) across
52 = Specific Device Code
= Date Code
= Pb-Free Package
CC
ON
M
the supply voltage range. This performance makes it ideal for USB full
speed applications that require both low R and C for effective
G
ON
ON
signal transmission.
The NLAS8252 is capable of accepting control input signals down
to 1.4 V, over a range of V supply voltages with minimal leakage
current. The NLAS8252 is offered in a lead-free, 12 pin, 1.7 x 2.0 x
0.5 mm, UQFN package.
APPLICATION DIAGRAM
CC
D+
NLAS8252
USB
XCVR
D-
Features
D+
D-
R
L
•ꢀR : 4 W Max @ V = 4.2 V
Remote
Data
ON
CC
•ꢀC : < 20 pF @ V = 3.3 V
ON
CC
•ꢀOVT Protection up to 5.25 V on Common Pins
Rx
Tx
•ꢀV Range: 1.65 V to 4.5 V
CC
UART
XCVR
•ꢀ3 kV ESD Protection
•ꢀ1.7 x 2.0 x 0.5 mm UQFN12 Package
•ꢀThis is a Pb-Free Device
IN[1:0]
From Baseband
Typical Applications
•ꢀUSB/UART/Data Multiplexing
•ꢀShared USB Connector
•ꢀMobile Phones
ORDERING INFORMATION
†
Device
NLAS8252MUTAG
Package
Shipping
3000 /
Tape & Reel
•ꢀPortable Devices
UQFN12
(Pb-Free)
†For information on tape and reel specifications,
including part orientation and tape sizes, please
refer to our Tape and Reel Packaging Specification
Brochure, BRD8011/D.
©ꢀ Semiconductor Components Industries, LLC, 2008
April, 2008 - Rev. 0
1
Publication Order Number:
NLAS8252/D
NLAS8252
FUNCTIONAL BLOCK DIAGRAM AND PINOUT
PIN DESCRIPTIONS
1S1
12
Pin#
Name
Direction
Description
IN1
1S2
1S3
1
2
3
4
5
11
10
9
1
1S2
I/O
Switch #1 Position 2 Signal
Line
2
1S3
I/O
Switch #1 Position 3 Signal
Line
COM1
GND
3
4
V
CC
Input
I/O
Power Supply
Control
Logic
V
CC
2S3
Switch #2 Position 3 Signal
Line
5
6
7
8
2S2
I/O
I/O
Switch #2 Position 2 Signal
Line
2S3
2S2
COM2
IN2
8
2S1
Switch #2 Position 1 Signal
Line
6
7
IN2
Input
I/O
Bit 1 Control Input Select
Line
2S1
COM2
Switch #2 Common Signal
Line
(Top View)
9
GND
Input
I/O
Ground
Figure 1. Functional Block Diagram
10
COM1
Switch #1 Common Signal
Line
11
12
IN1
Input
I/O
Bit 0 Control Input Select
Line
1S1
Switch #1 Position 1 Signal
Line
FUNCTION TABLE
IN1 [0]
IN2 [1]
COM1 Closed to:
COM2 Closed to:
0
1
0
1
0
0
1
1
No Connect
1S1
No Connect
2S1
1S2
2S2
1S3
2S3
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2
NLAS8252
OPERATING CONDITIONS
MAXIMUM RATINGS
Symbol
Pins
Parameter
Value
Condition
Unit
V
V
CC
V
CC
Positive DC Supply Voltage
Analog Signal Voltage
-0.5 to +5.5
V
IS
1Sx, 2Sx
COMx
-0.5 to V + 0.3
CC
V
-0.5 to 5.3
-0.5 to 4.6
50
V
IN
IN1, IN2
Control Input Voltage
V
I
V
CC
Positive DC Supply Current
Analog Signal Continuous Current
mA
mA
CC
I
1Sx, 2Sx
COMx
$300
Closed Switch
IS_CON
I
1Sx, 2Sx
COMx
Analog Signal Peak Current
$500
10% Duty Cycle
mA
IS_PK
I
IN1, IN2
Control Input Current
$20
-65 to 150
mA
IN
T
Storage Temperature Range
°C
STG
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
RECOMMENDED OPERATING CONDITIONS
Symbol
Pins
Parameter
Positive DC Supply Voltage
Analog Signal Voltage
Value
Condition
Unit
V
V
CC
V
CC
1.65 to 4.5
V
IS
1Sx, 2Sx
COMx
GND to V
V
CC
GND to 4.5
GND to V
V
IN
IN1, IN2
Control Input Voltage
V
CC
T
A
Operating Temperature Range
-40 to 85
°C
Minimum and maximum values are guaranteed through test or design across the Recommended Operating Conditions, where ap‐
plicable. Typical values are listed for guidance only and are based on the particular conditions listed for each section, where applicable.
These conditions are valid for all values found in the characteristics tables unless otherwise specified in the test conditions.
ESD PROTECTION
Pins
Description
Human Body Model
Minimum Voltage
All Pins
3 kV
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3
NLAS8252
DC ELECTRICAL CHARACTERISTICS
CONTROL INPUT (TYPICAL: T = 255C; VCC = 3.3 V)
Symbol
Pins
Parameter
Test Conditions
V
CC
Min
Typ
Max
Unit
V
IH
INx
Control Input High
Figures 2
2.7 V
3.3 V
4.2 V
1.25
1.35
1.50
V
V
I
INx
INx
Control Input Low
Figures 2
2.7 V
3.3 V
4.2 V
0.4
0.4
0.5
V
IL
Control Input Leakage
V
IS
= GND
$1.0
mA
IN
SUPPLY CURRENT AND LEAKAGE (TYPICAL: T = 255C; VCC = 3.3 V, VIN = VCC or GND)
CC
Symbol
Pins
Parameter
Test Conditions
V
Min
Typ
Max
Unit
I
(OFF)
NC, NO
OFF State Leakage
V
= 3.6 V
COM
$1.0
mA
NO/NC
V
NC
= 1.0 V
I
(ON)
COM
ON State Leakage
Quiescent Supply
Power OFF Leakage
$1.0
1.0
mA
mA
mA
COM
I
V
CC
V
V
= V or GND, I = 0;
CC D
CC
IS
IOFF
= GND
1.0
IS
ON RESISTANCE (TYPICAL: T = 255C; VCC = 3.3 V)
Symbol
Pins
Parameter
Test Conditions
= -8 mA, V = 0 to V
V
Min
Typ
Max
Unit
CC
R
ON
1Sx, 2Sx COMx ON Resistance
I
I
I
;
;
;
2.7 V
3.3 V
4.2 V
5
4
3.5
6
5
4.5
W
ON
ON
ON
IS
CC
CC
CC
R
1Sx, 2Sx COMx
1Sx, 2Sx COMx
R
R
Flatness
Matching
= -8 mA, V = 0 to V
IS
2.7 V
3.3 V
4.2 V
1.3
1.4
1.6
W
W
FLAT
ON
DR
= -8 mA, V = 0 to V
IS
2.7 V
3.3 V
4.2 V
ON
ON
0.35
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4
NLAS8252
AC ELECTRICAL CHARACTERISTICS
TIMING/FREQUENCY (TYPICAL: T = 255C; VCC = 3.3 V, RL = 50 W, CL = 5 pF, f = 1 MHz)
Symbol
Pins
Parameter
Test Conditions
Min
Typ
200
0.01
13
Max
Unit
MHz
%
BW
-3 dB Bandwidth
THD
Total Harmonic Distortion 20 Hz to 20 kHz, 1.0 V
Turn On Time
PP
t
1Sx to 1Sy,
2Sx to 2Sy
30
25
nS
ON
t
1Sy to 1Sx,
2Sy to 2Sx
Turn Off Time
12
nS
nS
OFF
t
1Sx to 1Sy,
2Sx to 2Sy
Break Before Make
2.0
BBM
CROSSTALK: (TYPICAL: T = 255C; VCC = 3.3V, RL = 50 W, CL = 35 pF, f = 1MHz)
Symbol
Pins
Parameter
Test Conditions
Min
Typ
-60
-60
Max
Unit
dB
O
IRR
X
talk
1Sx or 2Sx
Off Isolation
V
IN
= 0
COMx to COMy Non-Adjacent Channel
dB
CAPACITANCE (TYPICAL: T = 255C; VCC = 3.3V, RL = 50 W, CL = 5 pF, f = 1 MHz)
Symbol
Pins
Parameter
Control Input
Through Switch
Test Conditions
Min
Typ
3
Max
Unit
pF
C
IN
INx
V
V
= 0 V
CC
C
ON
1Sx or 2Sx
to COM
= 3.3 V, V = 0 V
IN
16
20
pF
CC
C
OFF
1Sx, 2Sx COMx Unselected Port
V
CC
= V = 3.3 V
IN
8
pF
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5
NLAS8252
Detailed Description
switch, a signal can pass from the common pin to any of
three terminals. Whenever COM1 is closed to terminal 1S2,
COM2 will respectively be closed to terminal 2S2. The
select logic is controlled by two inputs, IN1 and IN2,
connecting the common pins to the terminals according to
the function table found on page 2. Since there are four
possible control states but only 3 possible terminals, the first
combination results in a open connection for all three
terminals.
The NLAS8252 is a DP3T switch designed for
applications where a single USB connector is used for
multiple data applications within a portable system. Two
differential signals from a USB connector can be routed to
3 different end locations. The first, channel 1, is optimized
for a full speed, USB 2.0 transceiver. The second and third,
channels 2 and 3, are optimized for UART or remote data
applications.
Control Inputs Select Logic
The NLAS8252 is made up of two, 3-throw switches
operating off of the same internal enable signal. For each
VIH and VIL Levels
200
190
180
170
160
150
140
130
120
110
100
90
80
70
60
50
40
30
20
10
0
0
0.4
0.8
1.2
1.6
(V)
2.0
2.4
2.8 3.2
V
IN
Figure 2. ICC Leakage Current vs. VIN
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6
NLAS8252
5
4.5
4
4.5
4
85°C
25°C
85°C
25°C
3.5
3
3.5
3
-40°C
-40°C
2.5
2
2.5
2
1.5
1
1.5
1
0.5
0
0.5
0
0
0.5
1
1.5
(V)
2
2.5
0
0.5
1
1.5
2
2.5
3
V
IN
V
IN
(V)
Figure 3. On-Resistance vs. Input Voltage
@ VCC = 2.7 V
Figure 4. On-Resistance vs. Input Voltage
@ VCC = 3.3 V
4
0
-1
-2
-3
-4
-5
-6
-7
85°C
25°C
3.5
3
2.5
2
-40°C
1.5
1
0.5
0
0
0.5
1
1.5
2
2.5
3
3.5
4
1E06
1E07
1E08
1E08
V
IN
(V)
FREQUENCY (Hz)
Figure 5. On-Resistance vs. Input Voltage
@ VCC = 4.2 V
Figure 6. Bandwidth vs. Frequency
0.009
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
0.008
0.007
0.006
0.005
0.004
0.003
0.002
0.001
0
10000
100000
1E06
1E07
1E08
1E09
10
100
1000
10000
100000
FREQUENCY (Hz)
FREQUENCY (Hz)
Figure 7. Cross Talk vs. Frequency
@ 255C
Figure 8. Total Harmonic Distortion vs.
Frequency
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7
NLAS8252
PACKAGE DIMENSIONS
UQFN12 1.7x2.0, 0.4P
CASE 523AE-01
ISSUE A
NOTES:
1. DIMENSIONING AND TOLERANCING PER ASME
Y14.5M, 1994.
D
A B
2. CONTROLLING DIMENSION: MILLIMETERS
3. DIMENSION b APPLIES TO PLATED TERMINAL
AND IS MEASURED BETWEEN 0.15 AND 0.30 MM
FROM TERMINAL TIP.
L1
PIN 1 REFERENCE
4. MOLD FLASH ALLOWED ON TERMINALS
ALONG EDGE OF PACKAGE. FLASH 0.03
MAX ON BOTTOM SURFACE OF
TERMINALS.
5. DETAIL A SHOWS OPTIONAL
CONSTRUCTION FOR TERMINALS.
DETAIL A
NOTE 5
E
0.10
0.10
C
C
2X
2X
MILLIMETERS
TOP VIEW
DIM MIN
MAX
0.55
0.05
A
A1
A3
b
0.45
0.00
DETAIL B
0.127 REF
A
0.15
0.25
0.05
0.05
C
DETAIL B
OPTIONAL
CONSTRUCTION
D
1.70 BSC
E
2.00 BSC
0.40 BSC
e
12X
C
K
0.20
----
0.55
0.03
A1
SEATING
PLANE
C
L
0.45
0.00
A3
SIDE VIEW
L1
L2
0.15 REF
8X
K
5
1
7
DETAIL A
e
MOUNTING FOOTPRINT
SOLDERMASK DEFINED
2.00
11
12X L
12X
b
1
L2
M
M
C A B
C
0.10
0.05
BOTTOM VIEW
NOTE 3
0.40
PITCH
0.32
2.30
11X
0.22
12X
0.69
DIMENSIONS: MILLIMETERS
*For additional information on our Pb-Free strategy and soldering
details, please download the ON Semiconductor Soldering and
Mounting Techniques Reference Manual, SOLDERRM/D.
ON Semiconductor and
are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice
to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability
arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages.
“Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All
operating parameters, including “Typicals” must be validated for each customer application by customer's technical experts. SCILLC does not convey any license under its patent rights
nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications
intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should
Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates,
and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death
associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal
Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.
PUBLICATION ORDERING INFORMATION
LITERATURE FULFILLMENT:
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N. American Technical Support: 800-282-9855 Toll Free
ꢁUSA/Canada
Europe, Middle East and Africa Technical Support:
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Order Literature: http://www.onsemi.com/orderlit
ꢁPhone: 303-675-2175 or 800-344-3860 Toll Free USA/Canada ꢁPhone: 421 33 790 2910
ꢁFax: 303-675-2176 or 800-344-3867 Toll Free USA/Canada
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For additional information, please contact your local
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NLAS8252/D
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