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FEATURES

GND

SN65LVDM31D (Marked as LVDM31)

(TOP VIEW)

DESCRIPTION

SN65LVDM31

SLLS417C – MARCH 2000 – REVISED MAY 2001

HIGH-SPEED DIFFERENTIAL LINE DRIVER

• Designed for Signaling Rates

NOTE: The signaling rate is the number of voltage transitions that

can be made per second.

Up to 150 Mbps

• Low-Voltage Differential Signaling With

Typical Output Voltage of 700 mV and a 100- Ω

Load

• Propagation Delay Time of 2.3 ns, Typical

• Single 3.3-V Supply Operation

• One Driver's Power Dissipation at 75 MHz,

50 mW, Typical

FUNCTIONAL BLOCK DIAGRAM

• High-Impedance Outputs When Disabled or

With V

< 1.5 V

• Bus-Pin ESD Protection Exceeds 12 kV

• Low-Voltage CMOS (LVCMOS) Logic Input

Levels Are 5-V Tolerant

The SN65LVDM31 incorporates four differential line

drivers that implement the electrical characteristics of

low-voltage differential signaling. This product offers a

low-power alternative to 5-V PECL drivers with similar

signal levels. Any of the four current-mode drivers will

deliver a minimum differential output voltage

magnitude of 540 mV into a 100- Ω load when

enabled by either an active-low or active-high enable

input.

The intended application of this device and signaling

FUNCTION TABLE

technique is for both point-to-point and multiplexed

baseband data transmission over controlled

INPUT ENABLES OUTPUTS

impedance media of approximately 100 Ω . The

A G G Y Z

transmission media may be printed-circuit board

H H X H L

traces, backplanes, or cables. The ultimate rate and

L H X L H

distance of data transfer is dependent upon the

H X L H L

attenuation characteristics of the media and the noise

coupling to the environment.

L X L L H

X L H Z Z

The SN65LVDM31 is characterized for operation from

–40°C to 85°C.

Open H X L H

Open X L L H

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.

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 (8 pages)

PAGE 1
SN65LVDM31 www.ti.com SLLS417C – MARCH 2000 – REVISED MAY 2001 HIGH-SPEED DIFFERENTIAL LINE DRIVER FEATURES • SN65LVDM31D (Marked as LVDM31) (TOP VIEW) Designed for Signaling Rates NOTE: The signaling rate is the number of voltage transitions that can be made per second. • • • • • • • 1A 1Y 1Z G 2Z 2Y 2A GND Up to 150 Mbps Low-Voltage Differential Signaling With Typical Output Voltage of 700 mV and a 100-Ω Load Propagation Delay Time of 2.3 ns, Typical Single 3.
PAGE 2
SN65LVDM31 www.ti.com SLLS417C – MARCH 2000 – REVISED MAY 2001 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.
PAGE 3
SN65LVDM31 www.ti.
PAGE 4
SN65LVDM31 www.ti.com SLLS417C – MARCH 2000 – REVISED MAY 2001 PARAMETER MEASUREMENT INFORMATION Y II IOY A IOZ VOD VOY Z VI VOC (VOY+VOZ)/2 VOZ Figure 1. Driver Voltage and Current Definitions 3.75 kΩ Y RL VOD Input Z + _ 0 V ≤ Vtest ≤ 2.4 V 3.75 kΩ Figure 2. VOD Test Circuit Y Input 49.
PAGE 5
SN65LVDM31 www.ti.com SLLS417C – MARCH 2000 – REVISED MAY 2001 PARAMETER MEASUREMENT INFORMATION (continued) 49.9 Ω ± 1%(2 Places) Y 0 V or 3 V G Inputs G Z VOY G 3V 1.5 V 0V G 3V 1.5 V 0V VOY or VOZ tPZH 1.2 V ≤ 1.4 V 1.25 V 1.2 V A at 3 V, G at VCC and Input to G or G at GND and Input to G 1.2 V 1.
PAGE 6
SN65LVDM31 www.ti.com SLLS417C – MARCH 2000 – REVISED MAY 2001 TYPICAL CHARACTERISTICS SUPPLY CURRENT vs FREQUENCY 70 60 I CC − Supply Current − mA VCC = 3.6 V 50 VCC = 3 V 40 VCC = 3.3 V 30 20 10 0 0 50 100 150 200 250 300 f − Frequency − MHz Figure 6. LOW-LEVEL OUTPUT VOLTAGE vs LOW-LEVEL OUTPUT CURRENT HIGH-LEVEL OUTPUT VOLTAGE vs HIGH-LEVEL OUTPUT CURRENT 3.5 VCC = 3.
PAGE 7
SN65LVDM31 www.ti.com SLLS417C – MARCH 2000 – REVISED MAY 2001 TYPICAL CHARACTERISTICS (continued) LOW-TO-HIGH LEVEL PROPAGATION DELAY TIME vs FREE-AIR TEMPERATURE HIGH-TO-LOW LEVEL PROPAGATION DELAY TIME vs FREE-AIR TEMPERATURE 2.75 2.5 t PLH − High-To-Low Propagation Delay Time − ns t PLH − Low-To-High Propagation Delay Time − ns 2.75 VCC = 3 V VCC = 3.3 V 2.25 VCC = 3.6 V 2 1.75 −50 −30 −10 50 30 70 TA − Free-Air Temperature − °C 10 90 VCC = 3 V 2.5 VCC = 3.3 V 2.25 VCC = 3.6 V 2 1.
PAGE 8
IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.