FS7140, FS7145

http://onsemi.com

2

Figure 1. Device Block Diagram

Table 1. PIN DESCRIPTIONS*

Pin

Type

Name

Description

1

DI

SCL

Serial interface clock (requires an external pull−up)

2

DIO

SDA

Serial interface data input/output (requires an external pull−up)

3

ADDR0

Address select bit “0”

4

P

VSS

Ground

5

AI

XIN

Crystal oscillator feedback

6

AO

XOUT

Crystal oscillator drive

7

ADDR1

Address select bit “1”

8

P

VDD

Power supply (+3.3 V nominal)

9

AI

IPRG

PECL current drive programming

10

−

n/c

No connection

11

P

VSS

Ground

12

REF

Reference frequency input

13

−

n/c

SYNC

FS7140 = No connection

FS7145 = Synchronization input

14

P

VDD

Power supply (+3.3 V nominal)

15

DO

CLKP

Clock output

16

DO

CLKN

Inverted clock output

Input/Output; DI−3 = Three−Level Digital Input; DO = Digital Output; P = Power/Ground; # = Active Low Pin