Datasheet

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General Description

The MAX4996/MAX4996L triple DPDT analog switches

operate from a single +2.5V to +5.5V supply, and fea-

ture 2.0Ω (typ) on-resistance, low 6pF (typ) on-capaci-

tance, and low power-supply current consumption. The

MAX4996/MAX4996L combine the low capacitance and

low resistance necessary for high-frequency switching

applications in portable electronics.

The MAX4996/MAX4996L have three logic inputs to

control the switches in pairs. The MAX4996 has an

active-high enable input (EN) to disable the switches,

while the MAX4996L has an active-low enable input

(EN) to disable the switches. The enable input decreas-

es the supply current and also places the COM_ out-

puts in a high-impedance state.

The MAX4996/MAX4996L feature a 5µA (max) supply-

current consumption when the logic inputs are not

rail-to-rail. This feature is especially valuable in applica-

tions where direct interface to low-voltage processors

is necessary.

The MAX4996/MAX4996L are available in a space-

saving 24-pin (3.5mm x 3.5mm) TQFN package and

operate over the -40°C to +85°C temperature range.

Applications

SD Card Switching

USB Signal Switching

UART Signal Switching

Cell Phones

PDAs

GPS

Portable Media Players (PMP)

Features

♦ Multiplex SD2.0/SDIO Interfaces

♦ Low Power Consumption (2µA max)

♦ +2.5V to +5.5V Supply Voltage Range

♦ Rail-to-Rail Signal Handling

♦ Low-Capacitance Switches, 6pF (typ)

♦ Low On-Resistance, 2Ω (typ)

♦ Excellent On-Resistance Flatness Over the Range

of 0V to V

♦ Wide -3dB Bandwidth, 670MHz

♦ Small 24-Pin TQFN (3.5mm x 3.5mm)

MAX4996/MAX4996L

Triple DPDT, Low-Capacitance Data Switches

________________________________________________________________

Maxim Integrated Products

Ordering Information

19-4036; Rev 0; 2/08

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

Typical Operating Circuit appears at end of data sheet.

PART

PIN-

PACKAGE

PAC KA GE

CODE

MAX4996ETG+ 24 TQFN-EP* T243A3-1

M A X4 9 9 6 L E TG+ 24 TQFN-EP* T243A3-1

Note: All devices operate over the -40°C to +85°C extended

temperature range.

+Denotes a lead-free package.

EP = Exposed paddle.

Pin Configuration/Truth Tables

CB12

LOW

HIGH

CB34

LOW

HIGH

NO1/NO2

OFF

NC1/NC2

NO3/NO4 NC3/NC4

OFF

HIGH

CB_

LOW

HIGH

NO_

OFF

NC_

OFF

LOW X OFF OFF

CB56

LOW

HIGH

NO5/NO6

OFF

NC5/NC6

OFF

MAX4996

MAX4996L

TQFN

3.5mm x 3.5mm

TRUTH TABLES

TOP VIEW

NO2

NO1

NO3

NO4

NO5

NO6

COM1

COM2

COM3

EN (EN)

NC1

NC2

NC3

NC4

NC5

NC6

*EP

(EN) FOR MAX4996L ONLY.

*CONNECT EXPOSED PADDLE TO GROUND.

COM4

CB56

COM5

GND

COM6

CB34

CB12

MAX4996/MAX4996L

MAX4996

LOW

CB_

LOW

HIGH

NO_

OFF

NC_

OFF

HIGH X OFF OFF

MAX4996L

Summary of content (13 pages)

PAGE 1
9-4036; Rev 0; 2/08 Triple DPDT, Low-Capacitance Data Switches Features The MAX4996/MAX4996L triple DPDT analog switches operate from a single +2.5V to +5.5V supply, and feature 2.0Ω (typ) on-resistance, low 6pF (typ) on-capacitance, and low power-supply current consumption. The MAX4996/MAX4996L combine the low capacitance and low resistance necessary for high-frequency switching applications in portable electronics. ♦ Multiplex SD2.
PAGE 2
MAX4996/MAX4996L Triple DPDT, Low-Capacitance Data Switches ABSOLUTE MAXIMUM RATINGS VCC to GND ...........................................................-0.3V to +6.0V EN, EN, CB_ ..........................................................-0.3V to +6.0V All Other Pins to GND ..................................-0.3V to VCC + 0.3V Continuous Current NO_, NC_, COM_ .......................................................±150mA Peak Current NO_, NC_, COM_ (pulsed at 1ms, 50% Duty Cycle).........................
PAGE 3
Triple DPDT, Low-Capacitance Data Switches MAX4996/MAX4996L ELECTRICAL CHARACTERISTICS (continued) (VCC = +2.5V to +5.5V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at VCC = 2.8V, TA = +25°C.) (Notes 2, 3) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS SWITCH DYNAMICS Turn-On Time tON VCC = 2.7V, VNO_ or VNC_ = 1.5V; RL = 50Ω, CL = 35pF, Figure 1 100 µs Turn-Off Time tOFF VCC = 2.7V, VNO_ or VNC_ = 1.
PAGE 4
Typical Operating Characteristics (VCC = 3V, TA = +25°C, unless otherwise noted.) 2.5 VCC = 2.7V 2.0 1.5 1.0 TA = -40°C TA = -40°C 1.0 2 3 4 5 0 0 1 VCOM (V) 2 0 1 2 VCOM (V) SUPPLY CURRENT vs. SUPPLY VOLTAGE 5 MAX4996/6L toc04 45 40 35 4 30 ICC (μA) TA = -40°C TO +85°C 25 20 3 2 15 10 1 5 0 0 1 2 3 0 VCOM (V) 4 6 VCC (V) QUIESCENT SUPPLY CURRENT vs. TEMPERATURE LOGIC THRESHOLD vs. SUPPLY VOLTAGE 2.0 MAX4996/6L toc06 3.5 3.0 VCC = 5.0V 1.5 THRESHOLD (V) 2.
PAGE 5
Triple DPDT, Low-Capacitance Data Switches INPUT ON-LOSS FREQUENCY RESPONSE QUIESCENT SUPPLY CURRENT vs. LOGIC LEVEL 6 4 MAX4996/6L toc09 -5 ON-LOSS (dB) 8 ICC (μA) 0 MAX4996/6L toc08 10 2 -10 -15 -20 -25 0 0 0.5 1.0 1.5 2.0 2.5 1 3.
PAGE 6
Triple DPDT, Low-Capacitance Data Switches MAX4996/MAX4996L Pin Description 6 PIN NAME FUNCTION 1 CB12 Digital Control Input for Analog Switches 1 and 2. Drive CB12 low to connect COM1 to NC1 and COM2 to NC2. Drive CB12 high to connect COM1 to NO1 and COM2 to NO2. 2 CB34 Digital Control Input for Analog Switches 3 and 4. Drive CB34 low to connect COM3 to NC3 and COM4 to NC4. Drive CB34 high to connect COM3 to NO3 and COM4 to NO4. 3 CB56 Digital Control Input for Analog Switches 5 and 6.
PAGE 7
Triple DPDT, Low-Capacitance Data Switches MAX4996 MAX4996L COM_ NO_ OR NC_ VIN LOGIC INPUT t r < 5ns t f < 5ns 50% VCC 50% 0V VOUT RL t OFF CL CB_ VOUT LOGIC INPUT SWITCH OUTPUT 0.9 x V0UT 0.9 x VOUT 0V t ON CL INCLUDES FIXTURE AND STRAY CAPACITANCE. RL VOUT = VIN RL + RON ( ) Figure 1. Switching Time MAX4996 MAX4996L VIN LOGIC INPUT 50% 0V NC_ COM_ VOUT NO_ CB_ VCC RL LOGIC INPUT CL 0.9 x VOUT VOUT tBBM CL INCLUDES FIXTURE AND STRAY CAPACITANCE. Figure 2.
PAGE 8
Triple DPDT, Low-Capacitance Data Switches MAX4996/MAX4996L Timing Circuits/Timing Diagrams (continued) RS VIN+ MAX4996/ MAX4996L NC OR NO_ COM_ VOUT+ RL RS VIN- NC OR NO_ COM_ VOUTRL CB VIL TO VIH tSKEW = |tPLHX - tPLHY| OR |tPHLX - tPHLY| VCC VIN+ 50% 50% 50% 50% 0V VCC VIN0V tPLHX tPHLX VCC VOUT+ 50% 50% 50% 50% 0V VCC VOUT0V tPHLY tPLHY Figure 3.
PAGE 9
Triple DPDT, Low-Capacitance Data Switches OFF-ISOLATION = 20log ✕ NETWORK ANALYZER 0 OR VCC CB_ NC1 50Ω COM1 MAX4996 MAX4996L NO1* 50Ω VIN VOUT V ON-LOSS = 20log ✕ OUT VIN 50Ω MEAS V CROSSTALK = 20log ✕ OUT VIN REF 50Ω VOUT VIN 50Ω *FOR CROSSTALK THIS PIN IS NO2. NC2 AND COM2 ARE OPEN. MEASUREMENTS ARE STANDARDIZED AGAINST SHORTS AT IC TERMINALS. OFF-ISOLATION IS MEASURED BETWEEN COM_ AND OFF NO_ OR NC_ TERMINAL ON EACH SWITCH.
PAGE 10
MAX4996/MAX4996L Triple DPDT, Low-Capacitance Data Switches Functional Diagram Detailed Description The MAX4996/MAX4996L triple DPDT analog switches operate from a single +2.5V to +5.5V supply and feature 2.0Ω (typ) on-resistance, low 6pF (typ) on-capacitance, and low power-supply current consumption. The combination of low resistance and low capacitance make this switch ideal for high-frequency applications.
PAGE 11
Triple DPDT, Low-Capacitance Data Switches VCC CB12 CLK NO1 COM1 NC1 CMD NO2 COM2 BASEBAND NC2 SD CARD INTERFACE CB34 DAT0 NO3 COM3 NC3 DAT1 SD CARD NO4 COM4 NC4 CB56 DAT2 NO5 COM5 NC5 DAT3 NO6 COM6 NC6 CLK CMD APPLICATION PROCESSOR EN (EN) GND DIGITAL CONTROL FROM BASEBAND MAX4996/ MAX4996L SD CARD INTERFACE DAT0 DAT1 DAT2 DAT3 ______________________________________________________________________________________ 11 MAX4996/MAX4996L Typical Operating Circuit
PAGE 12
Package Information (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) 24L THIN QFN.
PAGE 13
Triple DPDT, Low-Capacitance Data Switches Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 13 © 2008 Maxim Integrated Products is a registered trademark of Maxim Integrated Products, Inc.