FSA2257 Low RON Low-Voltage Dual SPDT Bi-Directional Analog Switch
January 2007
FSA2257 Low RON Low-Voltage Dual SPDT Bi-Directional Analog Switch
Features
■ Maximum 1.15Ω On Resistance (RON) for 4.5V Supply ■ 0.3Ω Maximum RON Flatness for +5V Supply ■ Space-Saving Pb-Free MicroPak™ Packaging ■ Broad VCC Operating Range: 1.65V to 5.5V ■ Fast Turn-on / Turn-off Time ■ Break-Before-Make Enable Circuitry ■ Over-Voltage Tolerant TTL-Compatible Control Input
Description
The FSA2257 is a high-performance bi-directional dual Single-Pole/Double-Throw (SPDT) analog switch. This switch can be configured as either a multiplexer or a demultiplexer by select pins. The device features ultra-low RON of 1.3Ω maximum at 4.5V VCC and operates over the wide VCC range of 1.65V to 5.5V. The device is fabricated with submicron CMOS technology to achieve fast switching speeds and is designed for break-before-make operation. The select input is TTL-level compatible.
Applications
■ Cell Phone ■ PDA ■ Ultra-Portable
Ordering Information
Order Number
FSA2257L10X(1)
Package Product Code Number Pb-Free Top Mark
MAC010A Yes EP
Package Description
10-Lead MicroPak™, 1.6 x 2.1mm 14-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide 10-Lead Molded Small Outline Package (MSOP), JEDEC MO-187, 3.0mm
Packing Method
5000 Units on Tape and Reel 2500 Units on Tape and Reel
FSA2257MTCX
(1)
MTC14
Yes
FSA2257
FSA2257MUX(1) Note:
MUA101A
Yes
FSA 2257
4000 Units on Tape and Reel
1. Lead-free package per JEDEC J-STD-020B. Device available in tape and reel only.
Base Band Voice/Bell Ring Base Band Processors with Melody Ring Generation 32Ω Earpiece
Amp
Select Pin
8Ω Loud Speaker
FSA2257
Figure 1. Block Diagram
MicroPak™ is a trademark of Fairchild Semiconductor Corporation.
© 2006 Fairchild Semiconductor Corporation FSA2257 Rev. 1.0.3 www.fairchildsemi.com
FSA2257 Low RON Low-Voltage Dual SPDT Bi-Directional Analog Switch
Connection Diagrams
1 2 3 4 5 6 7 14 13 12 11 10 9 8
1A GND 1B0 2A GND 2B0 NC
VCC 1S 1B1 VCC 2S 2B1 NC GND
1B0 9
1S 8
1A 7
1B1 6
10
5
VCC
1 2B0
2 2S
3 2A
4 2B1
Figure 2. Pin Assignments for TSSOP (Top View)
Figure 3. Pad Assignments for MicroPak (Top View)
2B1
1
10
2B0
2S
2
9
2A
VCC
3
8
GND
1A
4
7
1S
1B0
5
6
1B1
Figure 4. Pin Assignments for MSOP (Top View)
Analog Symbols
GND 2B0 1 10 9 1B0
Truth Table
Control Input(s) Function
LOW Logic Level HIGH Logic Level
B0 Connected to A B1 Connected to A
2S
2
8
1S
2A
3
7
1A
Pin Descriptions
Pin Names Function
2B1
4 5 VCC
6
1B1
A, B0, B1 S
Data Ports Control Input
(Top Through View)
Figure 5. Analog Symbols (Top View)
© 2006 Fairchild Semiconductor Corporation FSA2257 Rev. 1.0.3
www.fairchildsemi.com 2
FSA2257 Low RON Low-Voltage Dual SPDT Bi-Directional Analog Switch
Absolute Maximum Ratings
Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be operable above the recommended operating conditions and stressing the parts to these levels is not recommended. In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability. The absolute maximum ratings are stress ratings only.
Symbol
VCC VSW VIN IIK TSTG TJ TL ESD Supply Voltage DC Switch Voltage DC Input Voltage Switch Current
(2) (2)
Parameter
Min.
–0.5 –0.5 –0.5 –50
Max.
+6.0 VCC +0.5 +6.0 200 400
Unit
V V V mA °C °C °C V
Input Diode Current Peak Switch Current (pulsed at 1ms duration,
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