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BCT4257 Datasheet Preview

BCT4257 Datasheet

SPDT Analog Switch

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BCT4257
Low-Voltage,2.8
SPDT Analog Switch
BCT4257
Low-Voltage, 2.8Ω SPDT Analog Switch
General Description
The BCT4257 is a high-bandwidth, fast single pole
double-throw (SPDT) CMOS switch. It can be used as an
analog switch or as a low-delay bus switch. Specified over
a wide operating power supply voltage range, 1.65V to 5.5V,
the BCT4257 has a maximum ON resistance of 5.1-ohms
at 1.65V, 3.9-ohms at 2.3V & 2.85-ohms at 4.5V.
Break-before-make switching prevents both switches being
enabled simultaneously. This eliminates signal disruption
during switching.
The control input, S, tolerates input drive signals up to 5.5V,
independent of supply voltage.
Applications
Cell Phones
PDAs
Portable Instrumentation
Battery Powered Communications
Computer Peripherals
Connection Diagram(Top View)
DFN1.1x0.9-6L
Y1 1
6
S
GND 2
5 VCC
Y0 3
4Z
Features
CMOS Technology for Bus and Analog Applications
Low ON Resistance: 3-ohms @ 2.7V
Wide VCC Range: 1.65V to 5.5V
Rail-to-Rail Signal Range
Control Input Overvoltage Tolerance: 5.5V min.
High Off Isolation: 57dB at 10MHz
54dB (10MHz) Crosstalk Rejection Reduces Signal
Distortion
Break-Before-Make Switching
High Bandwidth: 300 MHz
Extended Industrial Temperature Range: 40°C to 85°C
Packaging: DFN1.1x0.9-6L (Pb-free & Green available)
Pin Description
Name
Y1
GND
Y0
Z
VCC
S
Description
Independent input or output
Ground
Independent input or output
Common output or input
Supply voltage
Select input
Logic Function Table
Logic Input (S)
0
1
Function
Y0 Connected to Z
Y1 Connected to Z
ORDERING INFORMATION
Ordering Code
BCT4257ELT-TR
Package Description
DFN1.1x0.9-6L
Temp Range
40°C to +85°C
Top Marking
AAB
REV1.2
www.broadchip.com
Copyright © BROADCHIP TECHNOLOGY CO., LTD
1




BROADCHIP

BCT4257 Datasheet Preview

BCT4257 Datasheet

SPDT Analog Switch

No Preview Available !

BCT4257
Low-Voltage,2.8
SPDT Analog Switch
ABSOLUTE MAXIMUM RATINGS(1)
RECOMMENDED OPERATING CONDITIONS(3)
Supply Voltage VCC.........................................0.5V to +7V
DC Switch Voltage (VS) (2).…….......…..–0.5V to VCC +0.5V
DC Input Voltage (VIN) (2).…..…….....….......–0.5V to +7.0V
DC VCC or Ground Current (ICC/IGND)..................±100mA
DC Output Current (VOUT) .......................................128mA
Storage Temperature Range (TSTG) ....... 65°C to +150°C
Junction Temperature under Bias (TJ) .......…............ 150°C
Junction Lead Temperature (TL)
(Soldering, 10 seconds) .................................... 260°C
Power Dissipation (PD) @ +85°C .............................180mW
Supply Voltage Operating (VCC)………………1.65V to 5.5V
Control Input Voltage (VIN)………………………..0V to VCC
Switch Inp ut Voltage (VIN)…………………………0V to VCC
Output Voltage (VOUT)…………………………….0V to VCC
Operating Temperature (TA)………………...–40°C to +85°C
Thermal Resistance (θJA)…………………………..350°C/W
Note 1:Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the device at
these or any other conditions beyond those indicated in the operational sections of this specification is not implied.
Note 2:The input and output negative voltage ratings may be exceeded if the input and output diode current ratings are observed.
Note 3:Control input must be held HIGH or LOW; it must not float.
DC ELECTRICAL CHARACTERISTICS (TA = - 40°C to +85°C)
Parameter
VIAR
RON
Description
Analog Input
Signal Range
ON
Resistance(4)
Test Conditions
Iout = 100mA,
Y0 or Y1=1.5V
Supply
Voltage
VCC
2.7V
RON
RON
ON
Resistance(4)
ON Resistance
Match
Between
Channels(4,5,6
)
Iout = 100mA,
Y0 or Y1=3.5V
Iout = 100mA,
Y0=Y1=1.5V
4.5V
2.7V
4.5V
RONF
ON
Resistance(4,5
,7)
Flatness
I(Z) = -100mA; Y0 or
Y1= 0.75V, 2V
2.7V
RONF
VIH
VIL
ON
Resistance(4,5
,7)
Flatness
I(Z) = -100mA; Y0 or
Y1=1.5V, 3.0V,
Input High
Voltage
Logic High Level
Input Low
Voltage
Logic Low Level
4.5V
VCC =
1.65V to
1.95V
VCC =
2.3V to
5.5V
VCC =
1.65V to
1.95V
VCC =
2.3V to
5.5V
Temp (ºC)
TA = 25°C &
40°C to 85°C
TA = 25°C
TA = 25°C
TA = 25°C
TA = 25°C
TA = 25°C
TA = 25°C &
40°C to 85°C
Min. Typ Max. Units
0 Vcc V
36
3
0.75
0.25
0.5 0
0.1 0
1.5
V
1.7
0.5
V
0.8
REV1.2
www.broadchip.com
Copyright © BROADCHIP TECHNOLOGY CO., LTD
2


Part Number BCT4257
Description SPDT Analog Switch
Maker BROADCHIP
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