General Description

The MAX3450E/MAX3451E/MAX3452E USB-compliant

transceivers interface low-voltage ASICs with USB

devices. The devices fully comply with USB 1.1 and

USB 2.0 when operating at full (12Mbps) and low

(1.5Mbps) speeds. The MAX3450E/MAX3451E/

compatibility with low-voltage ASICs.

The MAX3450E/MAX3451E/MAX3452E feature a logic-

selectable suspend mode that reduces current con-

sumption to less than 40µA. Integrated ±15kV ESD

protection protects the USB D+ and D- bidirectional

bus connections. The MAX3450E is pin compatible with

Micrel’s MIC2550A. The MAX3451E features an internal

1.5kΩ USB pullup resistor and an enumeration function

that allows devices to logically disconnect while

plugged in. The MAX3452E provides a push-pull bus-

greater than +4.0V.

The MAX3450E/MAX3451E/MAX3452E operate over the

-40°C to +85°C extended temperature range and are

available in 14-pin TSSOP and 3mm x 3mm 16-pin Thin

QFN packages.

Applications

PDAs

PC Peripherals

Cellular Telephones

Data Cradles

MP3 Players

Features

♦ ±15kV ESD Protection on D+ and D-

♦ Combined VP and VM Inputs/Outputs

Interfacing with Low-Voltage ASICs

♦ Enumerate Input Function (MAX3451E)

♦ Powered from Li+ Battery as Low as +3.1V

(MAX3450E and MAX3451E)

♦ Pin Compatible with Micrel MIC2550A (MAX3450E)

♦ Internal D+ or D- Pullup Resistor (MAX3451E)

♦ No Power-Supply Sequencing Required

±15kV ESD-Protected USB Transceivers

________________________________________________________________

Maxim Integrated Products

1

9

TOP VIEW

TSSOP

+

+

14

1

13

2

SPD

N.C. *(ENUM) **(BD)

12

3

RCV

11

4

VP

D+

10

5

VM

D-

8

7

GND

SUS

3mm x 3mm

THIN QFN-EP

16

1

2

3

4

12

11

10

9

15

14

13

56

7

8

D+

D-

OE

RCV

VP

***EXPOSED PAD

VM

*MAX3451E ONLY

**MAX3452E ONLY

***CONNECT EXPOSED PADDLE TO GND OR LEAVE UNCONNECTED

SPD

MAX3450E

MAX3451E

MAX3452E

MAX3450E

MAX3451E

MAX3452E

6

N.C.

OE

Pin Configurations

19-2843; Rev 2; 10/08

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.

Ordering Information

PART

PIN-PACKAGE

TOP MARK

MAX3450EEUD+

14 TSSOP

—

MAX3450EETE+

AAJ

MAX3451EEUD+

14 TSSOP

—

MAX3451EETE+

AAK

MAX3452EEUD+

14 TSSOP

—

MAX3452EETE+

AAL

Typical Operating Circuit appears at end of data sheet.

Note: All devices are specified over the -40°C to +85°C operat-

ing temperature range.

+

Denotes lead(Pb)-free package/RoHS-compliant package.