1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

38

37

36

35

34

33

32

31

30

29

28

27

26

25

24

23

22

21

20

S10

S11

1A

1B

S20

S21

2A

2B

GND

VCC

GND

3A

3B

S30

S31

4A

4B

S40

S41

VCC

GND

1Y

1Z

1DE

2Y

2Z

2DE

GND

VCC

GND

3Y

3Z

3DE

4Y

4Z

4DE

GND

VCC

SN65LVDS125ADBT ( Marked as LVDS125A)

SN65LVDT125ADBT ( Marked as LVDT125A)

(TOP VIEW)

200 - ps/div

1.5 Gbps

Eye Pattern of Two Outputs

Operating Simultaneously

SN65LVDT125A

SN65LVDS125A

www.ti.com

SLLS595C

– OCTOBER 2003 – REVISED JUNE 2011

LVDS 4x4 CROSSPOINT SWITCH

Check for Samples: SN65LVDT125A, SN65LVDS125A

1

FEATURES

•

Signaling Rates

>1.5 Gbps per Channel

•

Supports Telecom/Datacom and HDTV

Video Switching

•

Non-Blocking Architecture Allows Each

Output to be Connected to Any Input

•

Compatible With ANSI TIA/EIA-644-A LVDS

Standard

•

25 mV of Input Voltage Threshold Hysteresis

•

Propagation Delay Times, 900 ps Typical

•

Inputs Electrically Compatible With LVPECL,

CML and LVDS Signal Levels

•

Operates From a Single 3.3-V Supply

•

Integrated 110-

Ω Line Termination Resistors

Available With SN65LVDT125A

APPLICATIONS

•

Clock Buffering/Clock Muxing

•

Wireless Base Stations

•

High-Speed Network Routing

•

HDTV Video Switching

DESCRIPTION

The SN65LVDS125A and SN65LVDT125A are 4x4

nonblocking

crosspoint

switches.

Low-voltage

differential signaling (LVDS) is used to achieve

signaling rates of 1.5 Gbps per channel. Each output

driver includes a 4:1 multiplexer to allow any input to

be routed to any output. Internal signal paths are fully

differential to achieve the high signaling speeds while

maintaining low signal skews. The SN65LVDT125A

incorporates 110-

Ω termination resistors for those

applications where board space is a premium.

Designed to support signaling rates up to 1.5 Gbps

for OC-12 clocks (622 MHz). The 1.5-Gbps signaling

rate allows use in HDTV systems, including SMPTE

292 video applications requiring signaling rates of

1.485 Gbps.

The

SN65LVDS125A

and

SN65LVDT125A

are

characterized for operation from -40

°C to 85°C.

1

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Copyright

© 2003–2011, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.