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MC12028BD

更新时间： 2024-02-01 06:02:44

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	97K
描述
MECL PLL COMPONENTS ±64/65, ±128/129 DUAL MODULUS PRESCALER

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MC12028BD 数据手册

Order this document by MC12028A/D

The MC12028A 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.

The MC12028B can be used with CMOS synthesizers requiring negative

edges to trigger internal counters.

MECL PLL COMPONENTS

÷64/65, ÷128/129

DUAL MODULUS PRESCALER

A Divide Ratio Control (SW) permits selection of a 32/33 or 64/65 divide

ratio as desired.

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

been biased to select the desired divide ratio.

SEMICONDUCTOR

TECHNICAL DATA

NOTE: The “B” Version Is Not Recommended for New Designs

• 1.1 GHz Toggle Frequency

• MC12028A for Positive Edge Triggered Synthesizers

• 6.5 mA Maximum, –40 to 85°C, V

= 5.5 Vdc

D SUFFIX

PLASTIC PACKAGE

CASE 751

• Modulus Control Input Level Is Compatible With

Standard CMOS and TTL

• Low–Power 4.0 mA Typical

(SO–8)

FUNCTIONAL TABLE

Divide Ratio

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

but this is not recommended due to increased power soncumption.

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

ORDERING INFORMATION

Operating

Vdc

Temp Range

Device

Package

MC12028AD

MC12028AP

MC12028BD

MC120228BP

SO–8

Plastic

SO–8

Plastic

=–40° to +85°C

Motorola, Inc. 1997

Rev 3

12 3 4 5

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