Datasheet

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19-2365; Rev 4; 3/09

General Description

The MAX4780/MAX4784 are low on-resistance, low-

voltage, quad 2:1 analog multiplexers that operate from

a single +1.6V to +4.2V supply. These devices have

fast switching speeds (t

= 20ns, t

OFF

= 8ns), handle

rail-to-rail analog signals, and consume less than 1µW

of quiescent power.

When powered from a +2.7V supply, the MAX4780/

MAX4784 feature low 0.7Ω on-resistance (R

), and

0.1Ω R

flatness. The digital logic input is +1.8V

CMOS-logic compatible when using a single +3V supply.

The MAX4780/MAX4784 are available in 16-pin TSSOP

and 3mm x 3mm thin QFN packages.

Applications

Power Routing

Battery-Powered Systems

Audio and Video Signal Routing

Low-Voltage Data-Acquisition Systems

Communications Circuits

PCMCIA Cards

Cellular Phones

Modems

Hard Drives

Features

o Single-Supply Operation from 1.6V to 4.2V

o Low R

0.7Ω (+2.7V Supply)

2Ω (+1.8V Supply)

o 0.1Ω R

Flatness (+2.7V Supply)

o 3mm x 3mm Thin QFN Package

o +1.8V CMOS Logic Compatible

o Fast Switching: t

= 20ns, t

OFF

= 8ns

MAX4780/MAX4784

0.7

ΩΩ

, Low-Voltage, Quad 2:1 Analog

Multiplexers

________________________________________________________________

Maxim Integrated Products

Pin Configurations/Functional Diagrams/Truth Tables

Ordering Information

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.

5678

13141516

NC1 A0 V+ EN

NC4

NO4

COM4

NC3

NO3COM3GND

THIN QFN-EP

COM2

NO2

NC2

COM1

NO1

CONTROL LOGIC

MAX4784

5678

13141516

NC1 A0 V+ A1

NC4

NO4

COM4

NC3

NO3COM3GND

THIN QFN-EP

COM2

NO2

NC2

COM1

NO1

MAX4780

ON SWITCH

NONE

COM1-NC1

COM2-NC2

COM3-NC3

COM4-NC4

COM1-NO1

COM2-NO2

COM3-NO3

COM4-NO4

MAX4784

MAX4780

ON SWITCH

NC1, NC2

NO1, NO2

ON SWITCH

NC3, NC4

NO3, NO4

TOP VIEW

PART TEMP RANGE PIN-PACKAGE

MAX4780ETE -40°C to +85°C 16 Thin QFN-EP*

MAX4780EUE -40°C to +85°C 16 TSSOP

MAX4784ETE -40°C to +85°C 16 Thin QFN-EP*

MAX4784EUE -40°C to +85°C 16 TSSOP

Pin Configurations/Functional Diagrams/Truth Tables continued at end of data sheet.

EP = Exposed pad.

Summary of content (11 pages)

PAGE 1
9-2365; Rev 4; 3/09 0.7Ω, Low-Voltage, Quad 2:1 Analog Multiplexers The MAX4780/MAX4784 are low on-resistance, lowvoltage, quad 2:1 analog multiplexers that operate from a single +1.6V to +4.2V supply. These devices have fast switching speeds (tON = 20ns, tOFF = 8ns), handle rail-to-rail analog signals, and consume less than 1µW of quiescent power. When powered from a +2.7V supply, the MAX4780/ MAX4784 feature low 0.7Ω on-resistance (RON), and 0.1Ω R ON flatness. The digital logic input is +1.
PAGE 2
MAX4780/MAX4784 0.7Ω, Low-Voltage, Quad 2:1 Analog Multiplexers ABSOLUTE MAXIMUM RATINGS Voltages Referenced to GND V+, A_, EN ..........................................................-0.3V to +4.6V COM_, NO_, NC_ (Note 1) ........................-0.3V to (V+ + 0.3V) Continuous Current COM_ , NO_, NC_ .........................±300mA Peak Current COM_, NO_, NC_ (pulsed at 1ms 10% duty cycle)..................................±500mA Continuous Power Dissipation (TA = +70°C) 16-Pin Thin QFN (derate 14.
PAGE 3
0.7Ω, Low-Voltage, Quad 2:1 Analog Multiplexers (V+ = +2.7V to +4.2V, VIH = +1.4V, VIL = +0.5V, TA = TMIN to TMAX, unless otherwise specified. Typical values are at V+ = +3.0V, TA = +25°C.) (Notes 2, 3) PARAMETER SYMBOL CONDITIONS TA MIN TYP MAX 20 25 UNITS SWITCH DYNAMIC CHARACTERISTICS Turn-On Time tON Turn-Off Time tOFF Break-Before-Make (Note 8) Charge Injection tBBM Q NO_ or NC_ Off-Capacitance VNO_, VNC_ = 1.5V, RL = 50Ω, CL = 35pF, Figure 1 VNO_, VNC_ = 1.
PAGE 4
MAX4780/MAX4784 0.7Ω, Low-Voltage, Quad 2:1 Analog Multiplexers ELECTRICAL CHARACTERISTICS—Single +1.8V Supply (V+ = +1.8V, VIH = +1.0V, VIL = +0.4V, TA = TMIN to TMAX, unless otherwise specified. Typical values are at TA = +25°C.) (Notes 2, 3) PARAMETER SYMBOL CONDITIONS TA MIN TYP MAX UNITS V+ V ANALOG SWITCH Analog Signal Range VCOM_, VNO_, VNC_ 0 RON ICOM_ = 10mA, VNO_ or VNC_ = 1.0V NO_ or NC_ Off-Leakage Current (Note 7) INO_(OFF), INC_(OFF) VCOM_ = 0.3V, 1.5V; VNO_ or VNC_ = 1.
PAGE 5
0.7Ω, Low-Voltage, Quad 2:1 Analog Multiplexers (V+ = +1.8V, VIH = +1.0V, VIL = +0.4V, TA = TMIN to TMAX, unless otherwise specified. Typical values are at TA = +25°C.) (Notes 2, 3) PARAMETER SYMBOL CONDITIONS TA MIN TYP MAX UNITS LOGIC INPUT (A_, EN) Input Logic-High VIH Input Logic-Low VIL Input Leakage Current IIN 1 V EN = 0 or +3.6V, VA0 = 0 or +3.6V V 0.
PAGE 6
Typical Operating Characteristics (continued) (TA = +25°C, unless otherwise noted.) LOGIC-LEVEL THRESHOLD vs. SUPPLY VOLTAGE SUPPLY CURRENT vs. SUPPLY VOLTAGE AND TEMPERATURE 30 V+ = +3.0V 20 TA = +85°C 1.0 RISING 0.9 10 TA = +25°C 1 MAX4780/MAX4784 toc06 1000 100 1.1 MAX4780/MAX4784 toc05 40 10,000 SUPPLY CURRENT (nA) MAX4780/MAX4784 toc04 50 THRESHOLD (V) CHARGE INJECTION vs. VCOM 0.1 0.8 0.7 FALLING 0.6 TA = -40°C 0.01 V+ = +1.8V 0.5 0.001 0 0 0.5 1.0 1.5 2.0 2.5 0.4 0 3.
PAGE 7
0.7Ω, Low-Voltage, Quad 2:1 Analog Multiplexers PIN MAX4780 MAX4784 TSSOP THIN QFN-EP TSSOP THIN QFN-EP 1 2 15 16 1 2 15 16 3 1 3 4 2 4 5 6 3 4 7 NAME FUNCTION A0 NC1 Address Input Normally Closed Terminal 1 NO1 Normally Open Terminal 2 COM1 5 6 3 4 NC2 NO2 5 7 5 COM2 8 6 8 6 GND 9 10 7 8 9 10 7 8 COM3 NO3 11 9 11 9 NC3 12 10 12 10 COM4 13 14 11 12 13 14 11 12 NO4 NC4 15 13 — — A1 Address Input — — 15 13 EN Enable.
PAGE 8
MAX4780/MAX4784 0.7Ω, Low-Voltage, Quad 2:1 Analog Multiplexers Logic Inputs The MAX4780/MAX4784 logic inputs can be driven up to +4.2V regardless of the supply voltage. For example, with a +1.8V supply, A_ and EN may be driven low to GND and high to +4.2V. Driving A_ and EN rail-to-rail minimizes power consumption. Drive EN low to enable the COM_ outputs. When EN is high, the COM_ outputs are high impedance.
PAGE 9
0.7Ω, Low-Voltage, Quad 2:1 Analog Multiplexers V+ V+ RGEN V+ V+ OR GND VEN NC, NO A0 0 VGEN MAX4780/ MAX4784 VEN EN** ∆ VOUT VOUT VOUT COM GND CL* ∆ VOUT IS THE MEASURED VOLTAGE DUE TO CHARGETRANSFER ERROR Q WHEN THE CHANNEL TURNS OFF. Q = ∆ VOUT ✕ CL *CL INCLUDES STRAY CAPACITANCE. **MAX4784 ONLY. Figure 3. Charge Injection V+ V+ NC, NO A0 V+ OR GND MAX4780/ MAX4784 EN* 1MHz CAPACITANCE ANALYZER COM GND *MAX4784 ONLY. Figure 4.
PAGE 10
0.
PAGE 11
0.7Ω, Low-Voltage, Quad 2:1 Analog Multiplexers PAGES CHANGED REVISION NUMBER REVISION DATE 0 4/02 Initial release — 1 1/04 Added MAX4780 — 2 9/04 Changed Ab max voltage — 3 12/04 Change operation to 4.2V — 4 3/09 Added exposed pad information DESCRIPTION 1, 2, 4, 7, 10, Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied.