MAX4854 MAXIM [Maxim Integrated Products], MAX4854 Datasheet

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MAX4854

Manufacturer Part Number
MAX4854
Description
7? Quad SPST Switches with Over-Rail Signal Handling
Manufacturer
MAXIM [Maxim Integrated Products]
Datasheet
The MAX4854 quad single-pole/single-throw (SPST)
switch operates from a single +2V to +5.5V supply and
can handle signals greater than the supply rail. This
switch features low 7Ω on-resistance with 30pF on-
capacitance, making it ideal for switching data signals.
For over-rail applications, this device passes signals
greater than the positive supply (up to +5.5V) through
the switch without distortion.
The MAX4854 is available in the space-saving, 16-pin,
3mm x 3mm thin QFN package and operates over the
-40°C to +85°C extended temperature range.
19-3472; Rev 0; 10/04
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
USB Switching
Cellular Phones
Notebook Computers
PDAs and Other Handheld Devices
SWITCHES SHOWN
FOR LOGIC "0" INPUT
TRUTH TABLE
IN_
0
1
Block Diagram/Truth Table
NO_
OFF
ON
________________________________________________________________ Maxim Integrated Products
NO1
NO2
NO3
NO4
General Description
MAX4854
7Ω
7Ω
7Ω
7Ω
Applications
COM1
IN1
COM2
IN2
COM3
IN3
COM4
IN4
with Over-Rail Signal Handling
7 Ω Quad SPST Switches
*EP = Exposed paddle.
MAX4854ETE
TOP VIEW
CONNECT EXPOSED PADDLE TO PC BOARD GROUND.
USB 2.0 Full Speed (12Mbps) and USB 1.1 Signal
Switching
Switches Signals Greater than V
7Ω On-Resistance
30pF On-Capacitance
150MHz, -3dB Bandwidth
1.8V Logic Compatibility
+2V to +5.5V Supply Range
Low 0.01µA Supply Current
Available in a Space-Saving, 3mm x 3mm,
16-Pin TQFN Package
PART
COM2
NO1
N.C.
IN2
1
2
3
4
3mm x 3mm THIN QFN
-40°C to +85°C
TEMP RANGE
16
5
Ordering Information
MAX4854
15
6
Pin Configuration
14
7
16 TQFN-EP*
PIN-
PACKAGE
13
8
CC
12
11
10
9
Features
COM4
N.C.
NO4
IN3
MARK
TOP
ACE
1

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MAX4854 Summary of contents

Page 1

... For over-rail applications, this device passes signals greater than the positive supply (up to +5.5V) through the switch without distortion. The MAX4854 is available in the space-saving, 16-pin, 3mm x 3mm thin QFN package and operates over the -40°C to +85°C extended temperature range. USB Switching ...

Page 2

Quad SPST Switches with Over-Rail Signal Handling ABSOLUTE MAXIMUM RATINGS V , IN_, COM_, NO_ to GND (Note 1) ................-0.3V to +6.0V CC Closed-Switch Continuous Current COM_, NO_, NC_ .....±50mA Peak Current COM_, NO_ (pulsed at 1ms, 50% ...

Page 3

ELECTRICAL CHARACTERISTICS (continued +2.7V to +5.5V -40°C to +85°C, unless otherwise noted. Typical values are wise noted.) (Note 2) PARAMETER SYMBOL NO_ Off-Capacitance 1MHz, Figure 5 OFF COM On-Capacitance ...

Page 4

... TURN-ON/TURN-OFF TIME vs. TEMPERATURE OFF -40 - TEMPERATURE (°C) LEAKAGE CURRENT vs. TEMPERATURE 1.6 1.4 1.2 COM ON-LEAKAGE 1.0 0.8 COM OFF-LEAKAGE 0.6 0.4 0.2 0 -40 - TEMPERATURE (°C) SWITCH PASSING SIGNALS ABOVE SUPPLY VOLTAGE MAX4854 toc12 2V/div 0V V COM 0V 200µs/div ...

Page 5

PIN NAME 1 NO1 Normally Open Terminal for Analog Switch N.C. No Connection. Not internally connected. Digital Control Input for Analog Switch 2. A logic-low on IN2 disconnects COM2 from NO2 and a 3 IN2 logic-high connects ...

Page 6

... Quad SPST Switches with Over-Rail Signal Handling Detailed Description The MAX4854 low on-resistance, low-voltage, analog switch is designed to operate from a +2V to +5.5V sin- gle supply and is fully specified for nominal +3.0V applications. The device features over-rail signal capa- bility that allows signals up to +5.5V with supply volt- ages down to +2 ...

Page 7

... MAX4854 NO_ V NO IN_ GND LOGIC INPUT C INCLUDES FIXTURE AND STRAY CAPACITANCE OUT Figure 1. Switching Time TxD TxD 39Ω 50pF DELAY DUE TO SWITCH FOR RISING INPUT AND RISING OUTPUT SIGNALS. ...

Page 8

... COM1 IN_ CC MAX4854 NO1* GND MEASUREMENTS ARE STANDARDIZED AGAINST SHORTS AT IC TERMINALS. OFF-ISOLATION IS MEASURED BETWEEN COM_ AND OFF NO_ TERMINAL ON EACH SWITCH. ON-LOSS IS MEASURED BETWEEN COM_ AND ON NO_ TERMINAL ON EACH SWITCH. CROSSTALK IS MEASURED FROM ONE CHANNEL TO THE OTHER CHANNEL. ...

Page 9

... Timing Diagrams (continued 10nF V CC COM_ MAX4854 CAPACITANCE METER NO_ f = 1MHz GND Figure 5. Channel Off-/On-Capacitance _______________________________________________________________________________________ 7 Ω Quad SPST Switches with Over-Rail Signal Handling Test Circuits/ TRANSISTOR COUNT: 735 PROCESS: CMOS Chip Information 9 ...

Page 10

Quad SPST Switches with Over-Rail Signal Handling (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages 0.10 C 0.08 ...

Page 11

For the latest package outline information www.maxim-ic.com/packages.) NOTES: 1.  DIMENSIONING & TOLERANCING CONFORM TO ASME Y14.5M-1994. 2.  ALL DIMENSIONS ARE IN MILLIMETERS. ANGLES ARE IN DEGREES. 3.  N IS THE TOTAL NUMBER OF TERMINALS. 4.  THE TERMINAL #1 IDENTIFIER AND TERMINAL NUMBERING CONVENTION SHALL CONFORM TO       JESD 95-1 SPP-012.  DETAILS OF TERMINAL #1 IDENTIFIER ARE OPTIONAL, BUT MUST BE LOCATED       WITHIN THE ZONE INDICATED. THE TERMINAL #1 IDENTIFIER MAY BE EITHER A MOLD OR       MARKED FEATURE. 5.  DIMENSION b APPLIES TO METALLIZED TERMINAL AND IS MEASURED BETWEEN 0.20 mm AND 0.25 mm       FROM TERMINAL TIP.   6.  ND AND NE REFER TO THE NUMBER OF TERMINALS ON EACH D AND E SIDE RESPECTIVELY. 7.  DEPOPULATION IS POSSIBLE IN A SYMMETRICAL FASHION. 8.  COPLANARITY APPLIES TO THE EXPOSED HEAT SINK SLUG AS WELL AS THE TERMINALS. 9.  DRAWING CONFORMS TO JEDEC MO220 REVISION C. Maxim cannot assume ...

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