Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsInterface ICsInterface IC - buffer amplifiers LVDS 1.5 GBit/s LLP 40 EP

ASIC/FPGA

ASIC/FPGA 1

CARD A CARD C

BACKPLANE

DS10BR254

1:4 LVDS

Repeater

Discrete

Serializer

ASIC/FPGA 2

Discrete

Deserializer 1

Discrete

Deserializer 2

CARD B

DS10BR254

www.ti.com

SNLS260D –DECEMBER 2007–REVISED APRIL 2013

DS10BR254 1.5 Gbps 1:4 LVDS Repeater

Check for Samples: DS10BR254

FEATURES

DESCRIPTION

The DS10BR254 is a 1.5 Gbps 1:4 LVDS repeater

• DC - 1.5 Gbps Low Jitter, Low Skew, Low

optimized for high-speed signal routing and

Power Operation

distribution over FR-4 printed circuit board

• Wide Input Common Mode Voltage Range

backplanes and balanced cables. Fully differential

Allows for DC-Coupled Interface to LVDS, CML

signal paths ensure exceptional signal integrity and

and LVPECL Drivers

noise immunity.

• Redundant Inputs

The device has two different LVDS input channels

• LOS Circuitry Detects Open Inputs Fault

and a select pin determines which input is active. A

Condition loss-of-signal (LOS) circuit monitors both input

channels and a unique LOS pin is asserted when no

• Integrated 100Ω Input and Output

signal is detected at that input.

Terminations

Wide input common mode range allows the switch to

• 8 kV ESD on LVDS I/O Pins Protects Adjoining

accept signals with LVDS, CML and LVPECL levels;

Components

the output levels are LVDS. A very small package

• Small 6 mm x 6 mm WQFN-40 Space Saving

footprint requires a minimal space on the board while

Package

the flow-through pinout allows easy board layout.

Each differential input and output is internally

APPLICATIONS

terminated with a 100Ω resistor to lower device return

losses, reduce component count and further minimize

• Clock Distribution

board space.

• Clock and Data Buffering and Muxing

• OC-12 / STM-4

• SD/HD SDI Routers

Typical Application

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.

2All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

Summary of content (16 pages)

PAGE 1
DS10BR254 www.ti.com SNLS260D – DECEMBER 2007 – REVISED APRIL 2013 DS10BR254 1.5 Gbps 1:4 LVDS Repeater Check for Samples: DS10BR254 FEATURES DESCRIPTION • The DS10BR254 is a 1.5 Gbps 1:4 LVDS repeater optimized for high-speed signal routing and distribution over FR-4 printed circuit board backplanes and balanced cables. Fully differential signal paths ensure exceptional signal integrity and noise immunity. 1 2 • • • • • • DC - 1.
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DS10BR254 SNLS260D – DECEMBER 2007 – REVISED APRIL 2013 www.ti.
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DS10BR254 www.ti.com SNLS260D – DECEMBER 2007 – REVISED APRIL 2013 PIN DESCRIPTIONS Pin Name Pin Number IN1+, IN1-, IN2+, IN2-, I/O, Type Pin Description 4, 5, 6, 7, I, LVDS Inverting and non-inverting high speed LVDS input pins. OUT0+, OUT0-, OUT1+, OUT1-, OUT2+, OUT2-, OUT3+, OUT3- 29, 27, 24, 22, O, LVDS Inverting and non-inverting high speed LVDS output pins. SEL_in 14 I, LVCMOS This pin selects which LVDS input is active.
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DS10BR254 SNLS260D – DECEMBER 2007 – REVISED APRIL 2013 www.ti.com Absolute Maximum Ratings (1) (2) −0.3V to +4V Supply Voltage LVCMOS Input Voltage −0.3V to (VCC + 0.3V) LVCMOS Output Voltage −0.3V to (VCC + 0.3V) −0.3V to +4V LVDS Input Voltage Differential Input Voltage |VID| 1V −0.3V to (VCC + 0.3V) LVDS Output Voltage LVDS Differential Output Voltage 0.
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DS10BR254 www.ti.com SNLS260D – DECEMBER 2007 – REVISED APRIL 2013 Electrical Characteristics Over recommended operating supply and temperature ranges unless otherwise specified. (1) (2) (3) Symbol Parameter Conditions Min Typ Max Units V LVCMOS DC SPECIFICATIONS VIH High Level Input Voltage 2.0 VDD VIL Low Level Input Voltage GND 0.8 V IIH High Level Input Current VIN = 3.6V VCC = 3.6V 0 ±10 μA IIL Low Level Input Current VIN = GND VCC = 3.
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DS10BR254 SNLS260D – DECEMBER 2007 – REVISED APRIL 2013 www.ti.com AC Electrical Characteristics Over recommended operating supply and temperature ranges unless otherwise specified.
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DS10BR254 www.ti.
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DS10BR254 SNLS260D – DECEMBER 2007 – REVISED APRIL 2013 www.ti.com FUNCTIONAL DESCRIPTION The DS10BR254 is a 1.5 Gbps 1:4 LVDS repeater optimized for high-speed signal routing and distribution over lossy FR-4 printed circuit board backplanes and balanced cables. Table 1. Input Select Truth Table CONTROL Pin (SEL_in) State Input Selected 0 IN1 1 IN2 Input Interfacing The DS10BR254 accepts differential signals and allows simple AC or DC coupling.
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DS10BR254 www.ti.com SNLS260D – DECEMBER 2007 – REVISED APRIL 2013 LVPECL Driver OUT+ 100: Differential T-Line LVDS Receiver IN+ 100: OUT150-250: IN150-250: Figure 4. Typical LVPECL Driver DC-Coupled Interface to an DS10BR254 Input Output Interfacing The DS10BR254 outputs signals compliant to the LVDS standard. Its outputs can be DC-coupled to most common differential receivers.
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DS10BR254 SNLS260D – DECEMBER 2007 – REVISED APRIL 2013 www.ti.com Typical Performance Figure 6. A 1.5 Gbps NRZ PRBS-7 After 2" Differential FR-4 Stripline V:100 mV / DIV, H:100 ps / DIV Figure 7. A 1.06 Gbps NRZ PRBS-7 After 2" Differential FR-4 Stripline V:100 mV / DIV, H:200 ps / DIV Figure 8. A 622 Mbps NRZ PRBS-7 After 2" Differential FR-4 Stripline V:100 mV / DIV, H:200 ps / DIV Figure 9. A 270 Mbps NRZ PRBS-7 After 2" Differential FR-4 Stripline V:100 mV / DIV, H:500 ps / DIV 120 VCC = 3.
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DS10BR254 www.ti.com SNLS260D – DECEMBER 2007 – REVISED APRIL 2013 REVISION HISTORY Changes from Revision C (April 2013) to Revision D • Page Changed layout of National Data Sheet to TI format ..........................................................................................................
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE MATERIALS INFORMATION www.ti.com 24-Apr-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant DS10BR254TSQ/NOPB WQFN RTA 40 250 178.0 16.4 6.3 6.3 1.5 12.0 16.0 Q1 DS10BR254TSQX/NOPB WQFN RTA 40 2500 330.0 16.4 6.3 6.3 1.5 12.0 16.
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PACKAGE MATERIALS INFORMATION www.ti.com 24-Apr-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) DS10BR254TSQ/NOPB WQFN RTA DS10BR254TSQX/NOPB WQFN RTA 40 250 213.0 191.0 55.0 40 2500 367.0 367.0 38.
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MECHANICAL DATA RTA0040A SQA40A (Rev B) www.ti.
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