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Part: FSA1257
Category:
RF & Microwaves
-> Switches
-> SPST Switches
Description: Low Ron Low Voltage Dual SPST Analog Switch <<<>>>Features <<<>>><<<>>>Maximum 1.1ohm on Resistance (RON) For 4.5V Supply <<<>>>0.4ohm Max Ron Flatness For 4.5V Supply <<<>>>Space Saving Micropak Packaging <<<>>>Broad VCC Operating Range: 1.65V to 5.5V <<<>>>Fast Turn-on And Turn-off Time <<<>>>FSA1258 Features Break-before-make Enable Circuitry <<<>>>Over-voltage Tolerant TTL Compatible Control Input
Company: Fairchild Semiconductor
Datasheet: Download FSA1257 datasheet File size : 171 kB
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Datasheet text preview:
FSA1256 · FSA1257 · FSA1258 Low RON Low Voltage Dual SPST Analog Switch
March 2004 Revised April 2004
FSA1256 · FSA1257 · FSA1258 Low RON Low Voltage Dual SPST Analog Switch
General Description
The FSA1256, FSA1257, and FSA1258 are high performance dual Single Pole/Single Throw (SPST) analog switches. These devices feature ultra low RON of 1.1 maximum at 4.5V VCC and will operate over the wide VCC range of 1.65V to 5.5V. These devices are fabricated with sub-micron CMOS technology to achieve fast switching speeds and are designed for break-before-make operation. The select input is TTL level compatible. The FSA1256 features two Normally Open (NO) switches. The FSA1257 features two Normally Closed (NC) switches. The FSA1258 has one NO switch and one NC switch.
Features
s Maximum 1.1 ON Resistance (RON) for 4.5V supply s 0.4 max RON flatness for 4.5V supply s Space saving MicroPak packaging s Broad VCC operating range: 1.65V to 5.5V s Fast turn-on and turn-off time s FSA1258 features break-before-make enable circuitry s Over-voltage tolerant TTL compatible control input
Ordering Code:
Product Order Number FSA1256L8X FSA1257L8X FSA1258L8X Package Number MAC08A MAC08A MAC08A Co d e Top Mark EB EC ED 8-Lead MicroPak, 1.6 mm Wide 8-Lead MicroPak, 1.6 mm Wide 8-Lead MicroPak, 1.6 mm Wide 5K Units on Tape and Reel 5K Units on Tape and Reel 5K Units on Tape and Reel Package Description Supplied As
Analog Symbols
FSA1256 FSA1257
(Top Through View)
(Top Through View)
Truth Tables
FSA1256 Control Input(s) L H
H = HIGH Logic Level
FSA1257 Function Disconnect A Connected to B Control Input(s) L H Function A Connected to B Disconnect
L = LOW Logic Level
MicroPak is a trademark of Fairchild Semiconductor Corporation.
© 2004 Fairchild Semiconductor Corporation
DS500883
www.fairchildsemi.com
FSA1256 · FSA1257 · FSA1258
Analog Symbol
FSA1258
(Top Through View)
Truth Table
FSA1258 Control Input 1S L H
H = HIGH Logic Level L = LOW Logic Level
Function 1A Connected to 1B Disconnect
Control Input 2S L H
Function Disconnect 2A Connected to 2B
Pin Descriptions
Pin Names A, B S Function Data Ports Control Input
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FSA1256 · FSA1257 · FSA1258
Absolute Maximum Ratings(Note 1)
Supply Voltage (VCC) Switch Voltage (VS) (Note 2) Input Voltage (VIN) (Note 2) Input Diode Current Switch Current Peak Switch Current (Pulsed at 1 ms duration, <10% Duty Cycle) Power Dissipation @ 85°C MicroPak 8L package Storage Temperature Range (TSTG) Maximum Junction Temperature (TJ) Lead Temperature (TL) Soldering, 10 seconds ESD Human Body Model 5.5kV 180 mW 400 mA
-0.5V to +6.0V -0.5V to VCC + 0.5V -0.5V to +6.0V -50 mA
200 mA
Recommended Operating Conditions
Supply Voltage (VCC) Control Input Voltage (VIN) (Note 3) Switch Input Voltage (VIN) Operating Temperature (TA) Thermal Resistance (JA) in still air MicroPak 8L package 224°C/W (modeled) 1.65V to 5.5V 0V to VCC 0V to VCC
-40°C to +85°C
-65°C to +150°C +150°C +260°C
Note 1: The "Absolute Maximum Ratings" are those values beyond which the safety of the device cannot be guaranteed. The device should not be operated at these limits. The parametric values defined in the Electrical Characteristics tables are not guaranteed at the absolute maximum ratings. The "Recommended Operating Conditions" table will define the conditions for actual device operation. Note 2: The input and output negative voltage ratings may be exceeded if the input and output diode current ratings are observed. Note 3: Unused inputs must be held HIGH or LOW. They may not float.
DC Electrical Characteristics (All typical values are @ 25°C unless otherwise specified)
Symbol VIH VIL IIN INO(OFF), INC(OFF) RON RON Switch ON Resistance (Note 4) ON Resistance Matching Between Channels (Note 5) RFLAT(ON) ON Resistance Flatness (Note 6) ICC Quiescent Supply Current 2 .7 4.5 3.6 5.5
Note 5: RON = RONmax - RONmin measured at identical VCC, temperature, and voltage. Note 6: Flatness is defined as the difference between the maximum and minimum value of ON Resistance over the specified range of conditions.
Parameter Input Voltage High Input Voltage Low Control Input Leakage OFF-Leakage Current
VCC (V) 2.7 to 3.6 4.5 to 5.5 2.7 to 3.6 4.5 to 5.5 2.7 to 3.6 4.5 to 5.5 5.5 2.7 4.5 4.5
TA = +25°C Min Typ Max
TA= -40°C to +85°C Min 2 .0 2 .4 0 .6 0 .8 -1.0 -1.0 1 .0 1 .0 20.0 4 .3 1.3 0.15 M ax
Units V V µA nA
Conditions
VIN = 0V to VCC A = 1V, 4.5V 1B or 2B = 1V, 4.5V IOUT = 100 mA, 1B or 2B = 1.5V IOUT = 100 mA, 1B or 2B = 3.5V IOUT = 100 mA, 1B or 2B = 3.5V IOUT = 100 mA, 1B or 2B = 0V, 0.75V, 1.5V IOUT = 100 mA, 1B or 2B = 0V, 1V, 2V VIN = 0V or VCC, IOUT = 0V
-2.0 2 .6 0.95 0.06 1.4 0.2
2.0 4.0 1.18 0.12
-20.0
0.3
0.4 10.0 10.0
µA
Note 4: ON Resistance is determined by the voltage drop between A and B pins at the indicated current through the switch.
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