VSC8121QI 查看數據表（PDF） - Vitesse Semiconductor

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VSC8121QI

2.488GHz SONET/SDH Clock Generator

Vitesse Semiconductor 

VITESSE

SEMICONDUCTOR CORPORATION

2.488GHz SONET/SDH

Clock Generator

Data Sheet

VSC8121

DC Characteristics

Table 3: Low Speed I/O

Parameter

VOH

VOL

VIH

VIL

IIH

IIL

Description

Output HIGH voltage (TTL)

Output LOW voltage (TTL)

Input HIGH voltage (TTL)

Input LOW voltage (TTL)

Input HIGH current (TTL)

Input LOW current (TTL)

Min Typ Max Units

Conditions

2.4

—

—

V IOH = -1.0 mA

—

—

0.5

V IOL = +1.0 mA

2.0

—

3.47

V—

0

—

0.8

V—

—

50

500

µA VIN = 2.4V

—

—

-500

µA VIN = 0.5V

Table 4: High-Speed Differential Outputs

Parameter

Description

Min Typ Max Units

Conditions

VOD

Output differential voltage

VOCM

Output common-mode voltage

450

—

800 mV

VCC -

0.40

—

VCC -

0.25

mV

Termination #1

(See Figure 3)

VCC -

0.80

—

VCC -

0.50

mV

Termination #2

(See Figure 3)

VCC -

0.80

—

VCC -

0.50

mV

Termination #3

(See Figure 3)

Note: Output jitter characteristics apply for differential outputs.

Table 5: Power Supply Currents

Parameter

Description

ICC

Power supply current from VCC

PD

Power dissipation

Min Typ Max Units

Conditions

200 mA Outputs Open

0.7

W Outputs Open

Page 6

© VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012

Tel: (800) VITESSE • FAX: (805) 987-5896 • Email: prodinfo@vitesse.com

Internet: www.vitesse.com

G52163-0, Rev 4.2

04/16/01

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