FS714x

Figure 2: Device Block Diagram

Table 1: FS7140 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 (+3.3V nominal)

9

AI

IPRG

PECL current drive programming

10

-

n/c

No connection

11

P

VSS

Ground

12

DI

U

REF

Reference frequency input

13

-

n/c

No connection

14

P

VDD

Power supply (+3.3V nominal)

15

DO

CLKP

Clock output

16

DO

CLKN

Inverted clock output

Key: AI: Analog Input; AO = Analog Output; DI = Digital Input; DI

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

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