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MC12089P

2.8 GHz Prescaler

Motorola => Freescale 

Order this document by MC12089/D

2.8 GHz Prescaler

The MC12089 is a single modulus divide by 64 and 128 prescaler for low

power frequency division of a 2.8 GHz high frequency input signal. The low

power (10.2 mA typical at 5.0 V) and high operating frequency features make

this prescaler ideal in satellite TV receiver applications.

Divide ratio control input SW selects the required divide ratio of ÷64 or

÷128.

On–chip output termination provides 2.5 mA of output current to drive a

12 pF (typical) high impedance load. The output voltage swing under typical

supply voltage and temperature conditions is 1.2 V. If additional drive is

required for the prescaler output, an external resistor can be added in

parallel from the OUT pin to Gnd to increase the output power. Care must be

taken not to exceed the maximum allowable current through the output.

• 2.8 GHz Toggle Frequency

• Supply Voltage 4.5 to 5.5 V

• Low Power Dissipation 51 mW Typical

• Operating Temperature Range of –40 to 85°C

FUNCTIONAL TABLE

SW

H

L

NOTE: H = VCC, L = Open.

Divide Ratio

64

128

MAXIMUM RATINGS

Characteristic

Symbol

Range

Unit

Power Supply Voltage, Pin 4

Operating Temperature Range

Storage Temperature Range

Maximum Output Current, Pin 7

NOTE: ESD data available upon request.

VCC

–0.5 to 7.0

Vdc

TA

–40 to 85

°C

Tstg

–65 to 150

°C

IO

4.0

mA

MC12089

MECL PLL COMPONENTS

÷64/128 PRESCALER

SEMICONDUCTOR

TECHNICAL DATA

8

1

D SUFFIX

PLASTIC PACKAGE

CASE 751

(SO–8)

8

1

P SUFFIX

PLASTIC PACKAGE

CASE 626

PIN CONNECTIONS

Gnd 1

IN 2

IN 3

8 NC

7 OUT

6 NC

VCC 4

5 SW

(Top View)

ORDERING INFORMATION

Device

Operating

Temperature Range

Package

MC12089D

TA = – 40° to +85°C

MC12089P

SO–8

Plastic

© Motorola, Inc. 1997

Rev 3

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