VSC8164QR View Datasheet(PDF) - Vitesse Semiconductor

Part Name

Description

Manufacturer

VSC8164QR

2.488 Gbit/sec to 2.7Gbit/sec 1:16 SONET/SDH Demux

Vitesse Semiconductor 

VITESSE

SEMICONDUCTOR CORPORATION

2.488 Gbit/sec to 2.7Gbit/sec

1:16 SONET/SDH Demux

Preliminary Datasheet

VSC8164

Figure 1: Split-end DC Termination of Low Speed LVPECL CLK16O, CLK32O, D[15:0] Outputs

VCC

VSC8164

Zo

R1

R1 downstream

Zo

R1||R2 = Zo , R1 = 125Ω R2 = 83Ω

R2

R2

VCCR2 + VEER1

R1+R2

= VTerm

VEE

Figure 2: Traditional DC Termination of Low Speed LVPECL CLK16O, CLK32O, D[15:0] Outputs

VSC8164

Zo

downstream

R1 =50Ω

VCC-2V

R1 =50Ω

VCC-2V

Figure 3: AC Termination of Low Speed LVPECL CLK16O, CLK32O, D[15:0] Outputs

VSC8164

Zo

Zo

50Ω

100nF

50Ω 100nF

VCC-2V

downstream

bias point

generated

internally

Page 2

 VITESSE SEMICONDUCTOR CORPORATION

741 Calle Plano, Camarillo, CA 93012 • 805/388-3700 • FAX: 805/987-5896

G52239-0, Rev. 3.3

5/17/00

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