8530 datasheet(9/16 Pages) IDT

Part #	8530

Description	Low Skew, 1-to16, Differential-to-2.5V LVPECL Fanout Buffer

PDF	16 Pages

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Manufacturer	IDT [Integrated Device Technology]

Direct Link	http://www.idt.com

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9 / 16 page

LOW SKEW, 1-TO16, DIFFERENTIAL-TO-2.5V LVPECL FANOUT

BUFFER

REVISION G 06/26/15

8530 DATA SHEET

Termination for 2.5V LVPECL Outputs

Figure 3A and Figure 3B show examples of termination for 2.5V

LVPECL driver. These terminations are equivalent to terminating 50

to VCCO – 2V. For VCCO = 2.5V, the VCCO – 2V is very close to ground

level. The R3 in Figure 3B can be eliminated and the termination is

shown in Figure 3C.

Figure 3A. 2.5V LVPECL Driver Termination Example

Figure 3C. 2.5V LVPECL Driver Termination Example

Figure 3B. 2.5V LVPECL Driver Termination Example

2.5V LVPECL Driver

VCC = 2.5V

2.5V

50Ω

250Ω

62.5Ω

–

2.5V LVPECL Driver

VCC = 2.5V

2.5V

50Ω

–

2.5V LVPECL Driver

VCC = 2.5V

2.5V

50Ω

18Ω

–

8530 Datasheet(PDF) 9 Page - Integrated Device Technology