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MC12038AP

更新时间： 2024-01-06 03:45:04

品牌	Logo	应用领域
摩托罗拉 - MOTOROLA		预分频器
页数	文件大小	规格书
5页	87K
描述
MECL PLL COMPONENTS ±127/128, ±255/256 DUAL MODULUS PRESCALER

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MC12038AP 数据手册

Order this document by MC12038A/D

The MC12038A can be used with CMOS synthesizers requiring positive

edges to trigger internal counters such as Motorola’s MC145XXX series in a

PLL to provide tuning signals up to 1.1 GHz in programmable frequency

steps.

A Divide Ratio Control (SW) permits selection of a 127/128 or 255/256

divide ratio as desired.

MECL PLL COMPONENTS

÷127/128, ÷255/256

DUAL MODULUS PRESCALER

The Modulus Control (MC) selects the proper divide number after SW has

been biased to select the desired divide ratio.

SEMICONDUCTOR

TECHNICAL DATA

• 1.1 GHz Toggle Frequency

• Supply Voltage of 4.5 to 5.5 V

• Low–Power 4.8 mA Typical

• Operating Temperature Range of –40 to 85°C

• Short Setup Time (t ) 16ns Maximum @ 1.1 GHz

set

• Modulus Control Input Level Is Compatible With Standard

D SUFFIX

PLASTIC PACKAGE

CASE 751

CMOS and TTL

• On–Chip Output Termination

(SO–8)

FUNCTIONAL TABLE

Divide Ratio

127

128

255

256

NOTES: 1. SW: H = V , L = Open. A logic L can also be applied by grounding this pin,

but this is not recommended due to increased power consumption.

P SUFFIX

PLASTIC PACKAGE

CASE 626

2. MC: H = 2.0 V to V , L = GND to 0.8 V.

DESIGN GUIDE

Criteria

Internal Gate Count*

Value

Unit

Internal Gate Propagation Delay

Internal Gate Power Dissipation

200

PIN CONNECTIONS

0.75

0.15

Speed Power Product

NOTE: * Equivalent to a two–input NAND gate

MAXIMUM RATINGS

Gnd

OUT

Characteristic

Symbol

Range

Unit

Vdc

°C

(Top View)

Power Supply Voltage, Pin 2

Operating Temperature Range

Storage Temperature Range

Modulus Control Input, Pin 6

NOTE: ESD data available upon request.

–0.5 to 7.0

–40 to 85

–65 to 150

–0.5 to 6.5

stg

°C

Vdc

ORDERING INFORMATION

Operating

Temperature Range

Device

Package

MC12038AD

MC12038AP

SO–8

= – 40° to +85°C

Plastic

Motorola, Inc. 1997

Rev 2

12 3 4 5

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