MC145168

•MC145169

MOTOROLA

1

Advance Information

Dual PLLs for 46/49 MHz

Cordless Telephones

CMOS

These devices are dual phase–locked loop frequency synthesizers intended

for use primarily in 46/49 MHz cordless phones with up to 15 channels. These

parts contain two mask–programmable counter ROMs for receive and transmit

loops with two independent phase detect circuits. A common reference

oscillator and reference divider are shared by the receive and transmit circuits.

Other features include a lock detect circuit for the transmit loop, illegal code

default, a buffered oscillator output for mixing purposes in the system, and a

5.0 kHz tone output.

• Maximum Operating Frequency: 60 MHz @ Vin = 200 mV p–p

• Operating Temperature Range: – 40 to + 75°C

• Operating Voltage Range: 2.5 to 5.5 V

• On–Chip Oscillator Circuit Supports External Crystal

• Operating Power Consumption: 3.0 mA @ 3.0 V

• Lock Detect Signal

• Standby Mode for Power Savings: 1.5 mA @ 3.0 V

• Two Versions:

MC145168 — Up to 15–Channel ROM with 4–Bit Binary Code Input for

Channel Pair Selection

MC145169 — Up to 15–Channel ROM with Serial Interface for Channel

Pair Selection

• Custom 20–Channel ROM Versions of the MC145169 are Possible;

Consult Factory

NOT RECOMMENDED FOR NEW DESIGNS;

PRODUCT TO BE PHASED OUT.

Closest equivalent is MC145162.

MC145168

PIN ASSIGNMENTS

MC145169

13

14

15

16

9

10

11

12

5

4

3

2

1

8

7

6

VSS

PD1

fin1

VDD

OSCin

fin2

LD

PD2

5 k

SB

MODE

OSCout

D3

D2

D1

D0

13

14

15

16

9

10

11

12

5

4

3

2

1

8

7

6

VSS

PD1

fin1

VDD

OSCin

fin2

LD

PD2

5 k

SB

MODE

OSCout

ENB

NC

CLK

DATA

NC = NO CONNECTION

This document contains information on a new product. Specifications and information herein are subject to change without notice.

Order this document

by MC145168/D

MOTOROLA

SEMICONDUCTOR TECHNICAL DATA

P SUFFIX

PLASTIC DIP

CASE 648

DW SUFFIX

SOG PACKAGE

CASE 751G

ORDERING INFORMATION

MC145168P

Plastic DIP

MC145168DW SOG Package

MC145169P

Plastic DIP

MC145169DW SOG Package

1

16

16

1

MC145168

MC145169

REV 2

1/98

TN98011400