PAC470GQT

更新时间： 2024-09-29 22:07:27

品牌	Logo	应用领域
CALMIRCO		/
页数	文件大小	规格书
3页	90K
描述
P/ACTIVE HIGH PERFORMANCE GTL/ECL LOCAL TERMINATION NETWORK

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PAC470GQT 数据手册

CALIFORNIA MICRO DEVICES

PACRG

P/Active High Performance GTL/ECL LocalTermination Network

Features

Applications

• Designed especially for Pentium Pro and RISC-

based computers/servers

• Pentium Pro servers

• Pentium Pro desk top systems

• GTL, ECL terminator for embedded

processor busses

• Provides high speed bus termination

• Reduces ground bounce with center ground

pin placement

Refer to AP-201 Termination Application Note and AP-203 GTL+

Termination Application Note for further information.

• Terminates 22 lines in a QSOP package

• Saves board space and reduces assembly cost

Product Description

CAMD’s P/Active RG GTL+ Local Bus Terminator is ideal

for Pentium Pro and related high speed bus termination

applications where a resistor approach is deemed suitable.

This device also meets the high-speed bus termination

demands of microprocessors like Motorola’s PowerPC,

DEC’s Alpha, Sun’s SPARC, and SGI’s MIPs processor, as

well as other high performance RISC processors for

embedded control applications.

The P/Active RG Termination Networks provide high

performance, high reliability, and low cost through manu-

facturing efficiency. The termination resistor elements are

fabricated using proprietary state-of-the-art thin film

technology. CAMD’s highly integrated solution is silicon-

based and has the same enhanced reliability characteris-

tics as today’s microprocessor products. The thin film

resistors have very high stability over a wide temperature

range, over applied voltage, and over life. In addition, the

QSOP industry standard packaging is manufacturing-

friendly and yields the high reliability of other semiconduc-

tor components. The P/Active RG Pentium Pro Termination

Network provides a complete 300 point termination

solution in only 14 QSOP packages.

The PACRG offers 22 terminations per package and meets

all related Intel specifications for Pentium Pro termination

requirements. Four popular values are available for a

variety of bus termination applications and line impedance

requirements: 47, 50, 56 and 68 ohms.

PIN DIAGRAM

STANDARD SPECIFICATIONS

Absolute Tolerance (R)

Operating Temperature Range

Power Rating/Resistor

Storage Temperature

24 23 22 21 20 19 18 17 16 15 14 13

0°C to 70°C

100mW

–65°C to 150°C

1.00w, Max

Package Power Rating

STANDARD VALUES

R (ΩΩ)

Code

470

500

560

680

10 11 12

STANDARD PART ORDERING INFORMATION

Package Ordering Part Number

R Code

470(1%)

500(1%)

560(1%)

680(1%)

Pins

Style

QSOP

Tubes

Tape & Reel

PAC470RGQ/R

PAC500RGQ/R

PAC560RGQ/R

PAC680RGQ/R

Part Marking

PAC470RGQ

PAC500RGQ

PAC560RGQ

PAC680RGQ

PAC470RGQ/T

PAC500RGQ/T

PAC560RGQ/T

PAC680RGQ/T

C00900400

8/10/2000 215 Topaz Street, Milpitas, California 95035

Tel: (408) 263-3214

Fax: (408) 263-7846

www.calmicro.com

12 3

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PAC470RGQ/R	CALMIRCO	获取价格	P/ACTIVE HIGH PERFORMANCE GTL/ECL LOCAL TERMINATION NETWORK

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