© Freescale Semiconductor, Inc., 2005. All rights reserved.

Freescale Semiconductor

Technical Data

Freescale reserves the right to change the detail specifications as may be required to permit improvements in the design of its

products.

MC145170-2/D

Rev. 5, 1/2005

MC145170-2

SCALE 2:1

Package Information

D Suffix

Plastic DIP Package

Case 751B

Package Information

DT Suffix

TSSOP Package

Case 948C

Package Information

P Suffix

SOG Package

Case 648

Ordering Information

Device

Operating

Temperature Range

Package

MC145170P2

Plastic DIP

MC145170D2

SOG-16

MC145170DT2

TSSOP-16

1

Introduction

The new MC145170-2 is pin-for-pin compatible with the

MC145170-1. A comparison of the two parts is shown in

Table 1 on page 2. The MC145170-2 is recommended

for new designs and has a more robust power-on reset

(POR) circuit that is more responsive to momentary

power supply interruptions. The two devices are actually

the same chip with mask options for the POR circuit. The

more robust POR circuit draws approximately 20

µA

additional supply current. Note that the maximum

specification of 100

µA quiescent supply current has not

changed.

The MC145170-2 is a single-chip synthesizer capable of

direct usage in the MF, HF, and VHF bands. A special

architecture makes this PLL easy to program. Either a

bit- or byte-oriented format may be used. Due to the

patented BitGrabber

™ registers, no address/steering bits

are required for random access of the three registers.

Thus, tuning can be accomplished via a 2-byte serial

transfer to the 16-bit N register.

MC145170-2

PLL Frequency Synthesizer with

Serial Interface

Contents

1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . 1

2 Electrical Characteristics . . . . . . . . . . . . . . . 3

3 Pin Connections . . . . . . . . . . . . . . . . . . . . . . . 9

4 Design Considerations . . . . . . . . . . . . . . . . 18

5 Packaging . . . . . . . . . . . . . . . . . . . . . . . . . . . 29