10

Precision Edge®

SY89831U

Micrel, Inc.

M9999-020707

hbwhelp@micrel.com or (408) 955-1690

OUTPUT TERMINATION RECOMMENDATIONS

R2

82

Ω

R2

82

Ω

+3.3V

+3.3V

R1

130

Ω

R1

130

Ω

+3.3V

Figure 4. Parallel Termination—

Thevenin Equivalent

Note:

1. For +2.5V systems: R1 = 250

Ω, R2 = 62.5Ω.

Part Number

Function

Data Sheet Link

SY89830U

1:4 LVPECL Fanout Buffer w/2:1 MUX Input

www.micrel.com/product-info/products/sy89830u.shtml

SY89832U

2.5V Ultra-Precision 1:4 LVDS Fanout Buffer/

www.micrel.com/product-info/products/sy89832u.shtml

Translator with Internal Termination

SY89833U

3.3V Ultra-Precision 1:4 LVDS Fanout Buffer/

www.micrel.com/product-info/products/sy89833u.shtml

Translator with Internal Termination

SY89834U

2.5/3.3V Two Input, 1GHz LVTTL/CMOS-to-LVPECL

www.micrel.com/product-info/products/sy89833u.shtml

1:4 Fanout Buffer/Translator

HBW Solutions

New Products and Applications

www.micrel.com/product-info/products/solutions.shtml

www.amkor.com/products/notes_papers/MLF_AppNote_0301.pdf

Exposed Pad Application Note

RELATED PRODUCT AND SUPPORT DOCUMENTATION

Z = 50

Ω

Z = 50

Ω

50

Ω

50

Ω

50

Ω

+3.3V

+3.3V

“source”“destination”

R

b

C1

0.01

µF

(optional)

Figure 5. Three-Resistor “Y-Termination”

Notes:

1. Power-saving alternative to Thevenin termination.

2. Place termination resistors as close to destination inputs as possible.

3. R

For +2.5V systems R

mismatches.