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DS91M125

www.ti.com

SNLS290C –AUGUST 2008–REVISED APRIL 2013

DS91M125 125 MHz 1:4 M-LVDS Repeater with LVDS Input

Check for Samples: DS91M125

FEATURES

DESCRIPTION

The DS91M125 is a 1:4 M-LVDS repeater designed

• DC - 125 MHz / 250 Mbps Low Jitter, Low

for driving and distributing clock or data signals to up

Skew, Low Power Operation

to four multipoint networks.

• Independent Driver Enable Pins

M-LVDS (Multipoint LVDS) is a new family of bus

• Outputs Conform to TIA/EIA-899 M-LVDS

interface devices based on LVDS technology

Standard

specifically designed for multipoint and multidrop

• Controlled Transition Times Minimize

cable and backplane applications. It differs from

Reflections

standard LVDS in providing increased drive current to

handle double terminations that are required in multi-

• Inputs Conform to TIA/EIA-644-A LVDS

point applications. Controlled transition times

Standard

minimize reflections that are common in multipoint

• 8 kV ESD on M-LVDS Output Pins Protects

configurations due to unterminated stubs.

Adjoining Components

A single DS91M125 channel is a 1:4 repeater that

• Flow-Through Pinout Simplifies PCB Layout

accepts M-LVDS/LVDS/CML/LVPECL signals and

• Industrial Operating Temperature Range

converts them to M-LVDS signal levels. Each output

(−40°C to +85°C)

has an associated independent driver enable pin. The

DS91M125 input conforms to the LVDS standard.

• Available in a Space Saving SOIC-16 Package

The DS91M125 has a flow-through pinout for easy

APPLICATIONS

PCB layout. It provides a new alternative for high

speed multipoint interface applications. It is packaged

• Multidrop / Multipoint Clock and Data

in a space saving SOIC-16 package.

Distribution

• High-Speed, Low Power, Short-Reach

Alternative to TIA/EIA-485/422

• Clock Distribution in AdvancedTCA (ATCA)

and MicroTCA (μTCA, uTCA) Backplanes

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 (17 pages)

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DS91M125 www.ti.com SNLS290C – AUGUST 2008 – REVISED APRIL 2013 DS91M125 125 MHz 1:4 M-LVDS Repeater with LVDS Input Check for Samples: DS91M125 FEATURES DESCRIPTION • The DS91M125 is a 1:4 M-LVDS repeater designed for driving and distributing clock or data signals to up to four multipoint networks.
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DS91M125 SNLS290C – AUGUST 2008 – REVISED APRIL 2013 www.ti.com Typical Application Line Card in SLOT 1 Line Card in SLOT N-1 Line Card in SLOT N M-LVDS Receivers M-LVDS Receivers DS91M125 RT Z0 RT RT Z0 RT RT Z0 RT RT Z0 RT RT = ZLOADED BACKPLANE Connection Diagram DE0 1 16 B0 DE1 2 15 A0 DE2 3 14 A1 VDD 4 13 B1 GND 5 12 B2 DI+ 6 11 A2 DI- 7 10 A3 DE3 8 9 B3 Figure 1. 16-Lead (0.
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DS91M125 www.ti.com SNLS290C – AUGUST 2008 – REVISED APRIL 2013 Logic Diagram DE0 B0 A0 DE1 B1 A1 DI+ DI- B2 A2 DE2 B3 A3 DE3 PIN DESCRIPTIONS Number Name I/O, Type 1, 2, 3, 8 DE I, LVCMOS Description 6 DI+ I, LVDS Non-inverting receiver input pin. 7 DI- I, LVDS Inverting receiver input pin. 5 GND Power 10, 11, 14, 15 A O, M-LVDS Non-inverting driver output pin. 9, 12, 13, 16 B O, M-LVDS Inverting driver output pin.
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DS91M125 SNLS290C – AUGUST 2008 – REVISED APRIL 2013 www.ti.com These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates. ABSOLUTE MAXIMUM RATINGS (1) (2) −0.3V to +4V Supply Voltage −0.3V to (VDD + 0.3V) LVCMOS Input Voltages −1.9V to +5.5V M-LVDS Output Voltages −0.3V to (VDD + 0.
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DS91M125 www.ti.com SNLS290C – AUGUST 2008 – REVISED APRIL 2013 ELECTRICAL CHARACTERISTICS Over recommended operating supply and temperature ranges unless otherwise specified. (1) (2) (3) (4) 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 VIH = 3.
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DS91M125 SNLS290C – AUGUST 2008 – REVISED APRIL 2013 www.ti.com ELECTRICAL CHARACTERISTICS (continued) Over recommended operating supply and temperature ranges unless otherwise specified.(1)(2)(3)(4) Symbol IB(OFF) Parameter Conditions Driver output power-off current Min VB = 3.8V, VA = 1.2V, DE = 0V 0V ≤ VDD ≤ 1.5V VB = 0V or 2.4V, VA = 1.2V, DE = 0V 0V ≤ VDD ≤ 1.5V −20 VB = −1.4V, VA = 1.2V, DE = 0V 0V ≤ VDD ≤ 1.
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DS91M125 www.ti.com SNLS290C – AUGUST 2008 – REVISED APRIL 2013 SWITCHING CHARACTERISTICS Over recommended operating supply and temperature ranges unless otherwise specified. Symbol Parameter (1) (2) (3) Conditions Min Typ Max Units DRIVER AC SPECIFICATION tPLH Differential Propagation Delay Low to High RL = 50Ω, CL = 5 pF, 3.0 5.5 8.5 ns tPHL Differential Propagation Delay High to Low CD = 0.5 pF 3.0 5.5 8.
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DS91M125 SNLS290C – AUGUST 2008 – REVISED APRIL 2013 www.ti.com A ~ 1.9V B ~ 1.3V 'VOS(SS) VOS VOS(PP) Figure 3. Differential Driver Waveforms A 3.32 k: DI+ Power Supply D Power Supply VTEST RL DI- VAB 3.32 k: B Vary VTEST ± 1.0V to 3.4V Figure 4. Differential Driver Full Load Test Circuit DI+ A Power Supply D Power Supply DI- V = VA or VB B 1.62 k: V Figure 5. Differential Driver DC Open Test Circuit DI+ A Power Supply D Power Supply DI- IOS B Vary VTEST ± 1.0V to 3.
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DS91M125 www.ti.com SNLS290C – AUGUST 2008 – REVISED APRIL 2013 CL A DI+ Signal Generator CD D DI- RL B 50: Driver ENABLED 50: CL Figure 7. Driver Propagation Delay and Transition Time Test Circuit 1.3V DI+ 1.2V 1.2V DI- 1.1V tPLH tPHL B VOH 0V (Differential) 0V VOL A VDIFF VP(H) VSS 90% 90% 0V 0V VDIFF = A - B VP(L) 10% 10% 0 VSS tTLH tTHL Figure 8.
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DS91M125 SNLS290C – AUGUST 2008 – REVISED APRIL 2013 DE www.ti.com VDD VDD / 2 VDD /2 0V tPHZ tPZH ~ 0.6V A-B WHEN DIN = L 50% 50% 0V 0V A-B WHEN DIN = H 50% 50% ~ 0.6V tPLZ tPZL Figure 10.
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DS91M125 www.ti.com SNLS290C – AUGUST 2008 – REVISED APRIL 2013 TYPICAL PERFORMANCE CHARACTERISTICS 3.4 3.4 f = 125 MHz DRIVER FALL TIME (10-90%) (ns) DRIVER RISE TIME (10-90%) (ns) f = 125 MHz 3.0 VCC = 3.0 V 2.6 2.2 1.8 VCC = 3.6 V VCC = 3.3 V 1.4 1.0 -50 -10 30 70 110 3.0 VCC = 3.0 V 2.6 2.2 1.8 1.4 1.0 -50 150 -10 TEMPERATURE (°C) 750 600 450 300 f = 1 MHz VCC = 3.3V 150 TA = 25°C 0 50 75 100 125 f = 125 MHz VCC = 3.0 V 7.0 6.0 5.0 VCC = 3.6 V VCC = 3.3 V 4.0 3.0 2.
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DS91M125 SNLS290C – AUGUST 2008 – REVISED APRIL 2013 www.ti.com REVISION HISTORY Changes from Revision B (April 2013) to Revision C • 12 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 DS91M125TMAX/NOPB Package Package Pins Type Drawing SOIC D 16 SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) 2500 330.0 16.4 Pack Materials-Page 1 6.5 B0 (mm) K0 (mm) P1 (mm) 10.3 2.3 8.0 W Pin1 (mm) Quadrant 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) DS91M125TMAX/NOPB SOIC D 16 2500 367.0 367.0 35.
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