General Description

The MAX4947/MAX4948 analog switches operate from a

single +1.8V to +5.5V supply. These switches feature a

low 30pF (typ) capacitance for high-speed data switch-

ing applications.

The MAX4947 is a triple double-pole/double-throw (DPDT)

switch, and the MAX4748 is a hex single-pole/double-

throw (SPDT) switch with one control logic input. The

MAX4947 has three logic inputs to control the switches in

pairs. The MAX4948 has one logic input and an enable

input (

EN) to disable the switches.

The MAX4947/MAX4948 are available in small 24-pin

(4mm x 4mm) TQFN and 25-bump (2.5mm x 2.5mm)

chip-scale packages (UCSP™).

Applications

Features

♦ Multiplex SDIO or Memory Stick Interfaces

♦ 1.8V to 5.5V Supply Voltage Range

♦ Low On-Resistance 4Ω (typ)

♦ Low-Capacitance Switches, 30pF (typ)

♦ Rail-to-Rail Signal Handling

♦ Small 25-Bump UCSP™ (2.5mm x 2.5mm) and

24-TQFN (4mm x 4mm)

Hex SPDT Data Switch

________________________________________________________________

Maxim Integrated Products

1

Ordering Information

MAX4947

S6

S5

COM6

COM5

S4

S3

COM4

COM3

S2

S1

COM2

COM1

GND

NO1

NC1

NO2

NC2

NO3

NC3

NO4

NC4

NO5

NC5

NO6

NC6

CB12

CB34

CB56

MAX4948

S6

S5

COM6

COM5

S4

S3

COM4

COM3

S2

S1

COM2

COM1

GND

NO1

NC1

NO2

NC2

NO3

NC3

NO4

NC4

NO5

NC5

NO6

NC6

CB

EN

Functional Diagram

19-0673; Rev 1; 1/07

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.

*

Future product—contact factory for availability.

+

Denotes lead-free package.

EP = Exposed paddle.

EVALUATION

KIT

AVAILABLE

PART

TEMP

RANGE

PIN-

PACKAGE

PKG

CODE

MAX4947EBA+*

-40°C to +85°C

25 UCSP-25

B25-1

MAX4947ETG+

-40°C to +85°C

24 TQFN-EP

T2444-4

MAX4948EBA+*

-40°C to +85°C

25 UCSP-25

B25-1

MAX4948ETG+

-40°C to +85°C

24 TQFN-EP

T2444-4

USB Signal Switching

UART Signal Switching

SDIO/Memory Stick

Cell Phones

PDAs

Typical Operating Circuit appears at end of data sheet.

UCSP is a trademark of Maxim Integrated Products, Inc.