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BL1551 
Prototype PCB
Part No.:   BL1551
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File Size :   200 K    
Page : 10 Pages
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Maker   BELLING [ SHANGHAI BELLING CO., LTD. ]http://www.belling.com.cn
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BL1551—Single SPDT Analog Switch
2.7Ω Low Voltage SPDT Analog Switch in 6-pin SC70
Ω
Features
Wide Power Supply Range: 1.8V to 5.5V
High Bandwidth: 300MHz
High Off-Isolation:
84dB at 1MHz
51dB at 10MHz
On-Resistance: 2.7Ω(typ)
at 5.0V
Fast Switching Time
t
on
= 12.0ns; t
off
= 5.0ns
TTL/CMOS Compatible
Break-Before-Make Switching
Rail-to-Rail Signal Range
Operation Temperature Range:
-40
℃ to 85℃
Lead (Pb) Free SC70-6 Package
Description
The BL1551 is a Single Wide-Bandwidth, fast single-
pole double-throw (SPDT) CMOS switch featuring an
On-Resistance of 2.7 ohm at V
CC
=5.0V and wide
power supply range from 1.8V to 5.5V. It can be used
as an analog switch or as a low-delay bus switch.
The 300MHz high bandwidth performance supports
the high frequency application.
Break-before-make function for both parts eliminates
signal disruption during switching from preventing
both switches being enabled simultaneously.
Block Diagram
BL1551
A1
1
6
E
NB
VCC
B
Applications
Wireless Handsets
MP3 Players
Portable Electronic Devices
Relay Replacement
PDAs
Audio & Video Signal Routing
PCMCIA Cards
Computer Peripherals
Modems
GND
A2
2
5
3
4
Function Table
ENB
Function
A1 Connected to B
A2 Connected to B
Pin Configuration
1
E
NB VCC
6
5
B
4
0
Pin Description
Pin Name
Type
PWR
Ground
Input/Output
Input/Output
Input/Output
Input
Description
Power Supply
Ground
Data Port
Data Port
Data Port
Logic Control Signal
ASSS
1
2
3
VCC
GND
B
A1
A2
ENB
A1 GND A2
SSS: production id
http://www.belling.com.cn
-1-
Total
10
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