R31DS0145EU0116 Rev. 1.16

Page 18

Sep 24, 2025

XK Datasheet

4. Applications Information

The following figures illustrate recommended termination schemes for each output type. Other terminations are

possible, depending on the application requirements. Contact Renesas if other schemes are required.

Figure 16. CML Output Termination

Table 20. CML Output Component Values

Figure 17. LVPECL Output Termination

Table 21. LVPECL Output Component Values

Figure 14. 3.3V LVPECL, 312MHz, 4MHz High-Pass Filter

Figure 15. 3.3V LVPECL, 625MHz, 4MHz High-Pass Filter

Output Type

VDD

RO (ohms)

ZDIFF(ohms)

R1 (ohms)

CML

1.8 ± 5%

NA

100

50

2.5 ± 5%

3.3 ± 5%

Output Type

VDD

RO (ohms)

ZDIFF(ohms)

R1 (ohms)

R2 (ohms)

LVPECL

3.3 ± 5%

NA

100

125

84

TA = +25°C, unless otherwise stated. (Cont.)

VDD

ZDIFF

RO

RO

VDD

VDD

ZDIFF

RO

RO

VDD