SL28DB200

......................... Document #: 38-07722 Rev *C Page 2 of 8

Notes: I=Input, O=Output, DIF=Differential signal, SE=Single Ended, PWR=Power input, GND=Ground

Pin Description

Pin

Name

Type

Description

2,3

SRCIN, SRCIN#

I,DIF

0.7V Differential inputs

5,6,13,12

SRC[1:2], SRC[1:2]#

O,DIF

0.7V Differential Clock Outputs

7,11

OE[1:2]#

I,SE

3.3V LVTTL input for enabling differential outputs

15

IREF

I

A precision resistor 475 ohm

is attached to this pin to set the differential

output current

1

VDDA

PWR

3.3V Power Supply

16

VSSA

GND

Ground

8,10,14

VDD

PWR

3.3V power supply for outputs

4,9

VSS

GND

Ground for outputs

Table 1. Buffer Power-up State Machine

State

Description

S0

3.3V Buffer power off

S1

After 3.3V supply is detected to rise above 1.8V - 2.0V, the buffer enters state 1 and initiates a 0.2-ms–0.3-ms delay

S2

Buffer waits for a valid clock on the SRCIN input

S3

Once a valid input is detected, the buffer enters state 3 and enables outputs for normal operation

Figure 1. Buffer Power-up State Diagram