VITESSE

SEMICONDUCTOR CORPORATION

Preliminary Data Sheet

VSC7958

2.5Gb/s High Speed Limiting Post Amplifier

for OC-48/SDH-16 Applications

G52184-0, Rev 3.0

Page 7

05/14/01

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

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

Internet: www.vitesse.com

Table 2: Pin Identifications

Ordering Information

The order number for this product is formed by a combination of the device number, and package style.

Notice

Vitesse Semiconductor Corporation (“Vitesse”) provides this document for informational purposes only. This document contains pre-production

information about Vitesse products in their concept, development and/or testing phase. All information in this document, including descriptions of

features, functions, performance, technical specifications and availability, is subject to change without notice at any time. Nothing contained in this

document shall be construed as extending any warranty or promise, express or implied, that any Vitesse product will be available as described or

will be suitable for or will accomplish any particular task.

Vitesse products are not intended for use in life support appliances, devices or systems. Use of a Vitesse product in such applications without writ-

ten consent is prohibited.

Pin #

Name

Function

1, 4, 5, 6, 15, 16,

and bottom heat

spreader

GND

DEVICE GROUND

The package bottom heat spreader should be connected to ground for the optimum thermal

and electrical performance.

2

VOUT+

POSITIVE DATA OUTPUT

3

VOUT-

NEGATIVE DATA OUTPUT

7

VSS

NEGATIVE DC SUPPLY

8VBR

DEVICE REFERENCE VOLTAGE

This pin can either float or be set to an external -1.5V supply.

9VREF-

NEGATIVE DATA INPUT REFERENCE

This pin should be bypassed to ground with a 0.1

µF cap and a 5Ω series resistor.

10

VIN-

NEGATIVE DATA INPUT

11

VIN+

POSITIVE DATA INPUT

12

VREF+

POSITIVE DATA INPUT REFERENCE

This pin should be bypasSed to ground with a 0.1

µF cap and a 5Ω series resistor.

13

VBF

INTERNAL TEST POINT

Do not connect.

14

VBS

INTERNAL TEST POINT

Do not connect.

VSC7958

XX

Device Type

VSC7958: 2.5Gb/s Limiting Amplifier

Package Style

CC: (Metal Glass - Formed Leads)

X : (Bare Die)