Multiple-Output Clock Generator

with Spread Spectrum

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 ____________________ 11

© 2005 Maxim Integrated Products

Printed USA

is a registered trademark of Maxim Integrated Products, Inc.

Package Information

(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information,

D2

(ND-1) X e

e

D

C

PIN # 1

I.D.

(NE-1) X e

E/2

E

0.08 C

0.10 C

A

A1

A3

DETAIL A

E2/2

E2

0.10 M C A B

PIN # 1 I.D.

b

0.35x45¡

D/2

D2/2

L

C

L

C

e

e

L

C

C

L

k

L

L

DETAIL B

L

L1

e

XXXXX

MARKING

H

1

2

21-0140

PACKAGE OUTLINE,

16, 20, 28, 32, 40L THIN QFN, 5x5x0.8mm

-DRAWING NOT TO SCALE-

L

e/2

COMMON DIMENSIONS

3.35

3.15

T2855-1

3.25

3.35

3.15

3.25

MAX.

3.20

EXPOSED PAD VARIATIONS

3.00

T2055-2

3.10

D2

NOM.

MIN.

3.20

3.00

3.10

MIN.

E2

NOM.

MAX.

NE

ND

PKG.

CODES

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

0.25 mm AND 0.30 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, EXCEPT EXPOSED PAD DIMENSION FOR T2855-1,

T2855-3, AND T2855-6.

NOTES:

SYMBOL

PKG.

N

L1

e

E

D

b

A3

A

A1

k

10.

WARPAGE SHALL NOT EXCEED 0.10 mm.

JEDEC

T1655-1

3.20

3.00

3.10

3.00

3.10

3.20

0.70

0.80

0.75

4.90

4.90

0.25

0.25

0

--

4

WHHB

4

16

0.35

0.30

5.10

5.10

5.00

0.80 BSC.

5.00

0.05

0.20 REF.

0.02

MIN.

MAX.

NOM.

16L 5x5

3.10

T3255-2

3.00

3.20

3.00

3.10

3.20

2.70

T2855-2

2.60

2.60

2.80

2.70

2.80

L

0.30

0.50

0.40

--

-

--

-

WHHC

20

5

5

5.00

5.00

0.30

0.55

0.65 BSC.

0.45

0.25

4.90

4.90

0.25

0.65

-

-

5.10

5.10

0.35

20L 5x5

0.20 REF.

0.75

0.02

NOM.

0

0.70

MIN.

0.05

0.80

MAX.

--

-

WHHD-1

28

7

7

5.00

5.00

0.25

0.55

0.50 BSC.

0.45

0.25

4.90

4.90

0.20

0.65

-

-

5.10

5.10

0.30

28L 5x5

0.20 REF.

0.75

0.02

NOM.

0

0.70

MIN.

0.05

0.80

MAX.

--

-

WHHD-2

32

8

8

5.00

5.00

0.40

0.50 BSC.

0.30

0.25

4.90

4.90

0.50

-

-

5.10

5.10

32L 5x5

0.20 REF.

0.75

0.02

NOM.

0

0.70

MIN.

0.05

0.80

MAX.

0.20 0.25 0.30

DOWN

BONDS

ALLOWED

NO

YES

3.10

3.00

3.20

3.10

3.00

3.20

T2055-3

3.10

3.00

3.20

3.10

3.00

3.20

T2055-4

T2855-3

3.15

3.25

3.35

3.15

3.25

3.35

T2855-6

3.15

3.25

3.35

3.15

3.25

3.35

T2855-4

2.60

2.70

2.80

2.60

2.70

2.80

T2855-5

2.60

2.70

2.80

2.60

2.70

2.80

T2855-7

2.60

2.70

2.80

2.60

2.70

2.80

3.20

3.00

3.10

T3255-3

3.20

3.00

3.10

3.20

3.00

3.10

T3255-4

3.20

3.00

3.10

NO

NO

NO

NO

NO

NO

NO

NO

YES

YES

YES

YES

3.20

3.00

T1655-2

3.10

3.00

3.10

3.20

YES

NO

3.20

3.10

3.00

3.10

T1655N-1

3.00

3.20

3.35

3.15

T2055-5

3.25

3.15

3.25

3.35

YES

3.35

3.15

T2855N-1

3.25

3.15

3.25

3.35

NO

3.35

3.15

T2855-8

3.25

3.15

3.25

3.35

YES

3.20

3.10

T3255N-1

3.00

NO

3.20

3.10

3.00

L

0.40

0.40

**

**

**

**

**

**

**

**

**

**

**

**

**

**

**

**

**

**

–0.15

11.

MARKING IS FOR PACKAGE ORIENTATION REFERENCE ONLY.

H

2

2

21-0140

PACKAGE OUTLINE,

16, 20, 28, 32, 40L THIN QFN, 5x5x0.8mm

-DRAWING NOT TO SCALE-

12. NUMBER OF LEADS SHOWN ARE FOR REFERENCE ONLY.

3.30

T4055-1

3.20

3.40

3.20

3.30

3.40

**

YES

0.05

00.02

0.60

0.40 0.50

10

-----

0.30

40

10

0.40 0.50

5.10

4.90 5.00

0.25 0.35 0.45

0.40 BSC.

0.15

4.90

0.25

0.20

5.00 5.10

0.20 REF.

0.70

MIN.

0.75 0.80

NOM.

40L 5x5

MAX.

13.

LEAD CENTERLINES TO BE AT TRUE POSITION AS DEFINED BY BASIC DIMENSION "e", –0.05.