MAXIM MAX9173 Technical data

MAX9173

Quad LVDS Line Receiver with Flow-Through

Pinout and “In-Path” Fail-Safe

________________________________________________________________ Maxim Integrated Products 1

19-2595; Rev 0; 10/02

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

General Description

The MAX9173 quad low-voltage differential signaling (LVDS) line receiver is ideal for applications requiring high data rates, low power, and low noise. The MAX9173 is guaranteed to receive data at speeds up to 500Mbps (250MHz) over controlled-impedance media of approximately 100Ω. The transmission media can be printed circuit (PC) board traces or cables.

The MAX9173 accepts four LVDS differential inputs and translates them to LVCMOS/LVTTL outputs. The MAX9173 inputs are high impedance and require an external termination resistor when used in a point-topoint connection.

The device supports a wide common-mode input range of 0.05V to VCC- 0.05V, allowing for ground potential differences and common-mode noise between the driver and the receiver. A fail-safe feature sets the output high when the inputs are open, or when the inputs are undriven and shorted or undriven and parallel terminated. The EN and EN inputs control the high-impedance outputs. The enables are common to all four receivers. Inputs conform to the ANSI TIA/EIA-644 LVDS standard. The flow-through pinout simplifies board layout and reduces crosstalk by separating the LVDS inputs and LVCMOS/LVTTL outputs. The MAX9173 operates from a single 3.3V supply, and is specified for operation from -40°C to +85°C. Refer to the MAX9121/ MAX9122 data sheet for lower jitter quad LVDS receivers with parallel fail-safe. Refer to the MAX9123 data sheet for a quad LVDS line driver with flowthrough pinout.

The device is available in 16-pin TSSOP, SO, and space-saving thin QFN packages.

Applications

Digital Copiers

Laser Printers

Cellular Phone Base Stations

Network Switches/Routers

Backplane Interconnect

Clock Distribution

LCD Displays

Telecom Switching Equipment

Features

♦ Accepts LVDS and LVPECL Inputs

♦ Fully Compatible with DS90LV048A

♦ Low 1.0mA (max) Disable Supply Current

♦ In-Path Fail-Safe Circuitry

♦ Flow-Through Pinout

Simplifies PC Board Layout Reduces Crosstalk

♦ Guaranteed 500Mbps Data Rate

♦ 400ps Pulse Skew (max)

♦ Conforms to ANSI TIA/EIA-644 LVDS Standard

♦ High-Impedance LVDS Inputs when Powered-Off

♦ Available in Tiny 3mm x 3mm QFN Package

Pin Configurations and Functional Diagram appear at end of data sheet.

Ordering Information

*Future product. Contact factory for availability. **EP = Exposed pad.

MAX9123

MAX9173

100Ω

LVDS SIGNALS

100Ω SHIELDED TWISTED CABLE OR MICROSTRIP BOARD TRACES

LVTTL/LVCMOS

DATA INPUTS

LVTTL/LVCMOS DATA OUTPUTS

Typical Operating Circuit

PART TEMP RANGE PIN-PACKAGE

MAX9173EUE -40°C to +85°C 16 TSSOP

MAX9173ESE -40°C to +85°C 16 SO

MAX9173ETE* -40°C to +85°C 16 Thin QFN-EP**

MAX9173

Quad LVDS Line Receiver with Flow-Through Pinout and “In-Path” Fail-Safe

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

VCCto GND ..........................................................-0.3V to +4.0V

IN_+, IN_- to GND .................................................-0.3V to +4.0V

OUT_, EN, EN to GND................................-0.3V to (V

+ 0.3V)

Continuous Power Dissipation (T

= +70°C)

16-Pin TSSOP (derate 9.4mW/°C above T

= +70°C)..755mW

16-Pin SO (derate 8.7mW/°C above T

= +70°C) ........696mW

16-Pin QFN (derate 14.7mW/°C above T

= +70°C)..1177mW

Junction Temperature......................................................+150°C

Storage Temperature Range .............................-65°C to +150°C

ESD Protection (Human Body Model, IN_+, IN_-) ............±7.0kV

Lead Temperature (soldering, 10s) .................................+300°C

DC ELECTRICAL CHARACTERISTICS

(VCC= 3.0V to 3.6V, differential input voltage |VID| = 0.1V to 1.2V, common-mode input voltage VCM= |VID/2| to VCC- |VID/2|, outputs enabled, and T

= -40°C to +85°C. Typical values are at VCC= 3.3V, VCM= 1.2V, |VID| = 0.2V, and TA= +25°C, unless otherwise

noted.) (Notes 1, 2)

LVDS INPUTS (IN_+, IN_-)

Differential Input High Threshold V

Differential Input Low Threshold V

Input Current (Noninverting Input) I

Power-Off Input Current (Noninverting Input)

Input Current (Inverting Input) I

Power-Off Input Current (Inverting Input)

LVCMOS/LVTTL OUTPUTS (OUT_)

Output High Voltage (Table 1) V

Output Low Voltage V

Output Short-Circuit Current I

Output High-Impedance Current I

LOGIC INPUTS (EN, EN)

Input High Voltage V

Input Low Voltage V

Input Current I

Input Clamp Voltage V

POWER SUPPLY

Supply Current I

Disabled Supply Current I

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

IN_+

IN_+OFF

IN_-

IN_-OFF

CCZ

Figure 1 +0.5 -2.5 -5 µA

= 0 to 3.6V, V

IN_+

= 0 or open (Figure 1)

Figure 1 -0.5 +5.0 +10 µA

= 0 to 3.6V, V

IN_+

= 0 or open, Figure 1

IOH = -4.0mA

IOL = +4.0mA, VID = -100mV 0.1 0.25 V

= 0 (Note 3) -45 -77 -120 mA

OUT_

Disabled, V

= high or low -15 +15 µA

ICL = -18mA -0.88 -1.5 V

Inputs open 12 15 mA

Disabled, inputs open 0.56 1.0 mA

-45 0 mV

-100 -45 mV

= 0 to 3.6V,

IN_-

= 0 to 3.6V,

IN_-

Open, undriven short, or undriven parallel termination

= 0 2.7 3.2

= 0 or V

OUT_

-0.5 0 +0.5 µA

2.7 3.2

-1 +1 µA

2.0 V

0 0.8 V

MAX9173

Quad LVDS Line Receiver with Flow-Through

Pinout and “In-Path” Fail-Safe

_______________________________________________________________________________________ 3

Note 1: Current into a pin is defined as positive. Current out of a pin is defined as negative. All voltages are referenced to ground

except V

, VTL, and VID.

Note 2: Devices are 100% production tested at T

= +25°C and are guaranteed by design for TA= -40°C to +85°C as specified.

Note 3: Short only one output at a time. Do not exceed the absolute maximum junction temperature specification. Note 4: AC parameters are guaranteed by design and characterization. Note 5: C

includes scope probe and test jig capacitance.

Note 6: Pulse generator output conditions: t

= tF< 1ns (0% to 100%), frequency = 250MHz, 50% duty cycle, VOH= 1.3V, VOL=

1.1V. High-impedance delay pulse generator output conditions: t

= tF < 3ns (0% to 100%), frequency = 1MHz, 50% duty

cycle, V

= 3V and VOL= 0.

Note 7: Propagation delay and differential pulse skew decrease when |V

| is increased from 200mV to 400mV. Skew specifications

apply for 200mV ≤|V

|≤1.2V over the common-mode range VCM= |VID|/2 to VCC- |VID|/2.

Note 8: t

SKD1

is the magnitude of the difference of differential propagation delays in a channel. t

SKD1

= |t

PHLD

- t

PLHD

Note 9: t

SKD2

is the magnitude of the difference of the t

PLHD

or t

PHLD

of one channel and the t

PLHD

or t

PHLD

of any other channel

on the same part.

Note 10: t

SKD3

is the magnitude of the difference of any differential propagation delays between parts operating over rated conditions

at the same V

and within 5°C of each other.

Note 11: t

SKD4

is the magnitude of the difference of any differential propagation delays between parts operating over rated conditions.

Note 12: 60% to 40% duty cycle, V

= 0.4V (max), VOH= 2.7V (min), load = 15pF.

AC ELECTRICAL CHARACTERISTICS

(VCC= 3.0V to 3.6V, CL= 15pF, |VID| = 0.2V, VCM= 1.2V, and TA= -40°C to +85°C. Typical values are at VCC= 3.3V and TA= +25°C, unless otherwise noted.) (Notes 4–7)

Differential Propagation Delay High to Low

Differential Propagation Delay Low to High

Differential Pulse Skew |t

PHLD - tPLHD

Differential Channel-to-Channel Skew

Differential Part-to-Part Skew

Rise Time t

Fall Time t

Disable Time High to Z t

Disable Time Low to Z t

Enable Time Z to High t

Enable Time Z to Low t

Maximum Operating Frequency f

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

PHLD

PLHD

SKD1

SKD2

SKD3

SKD4

TLH

THL

PHZ

PLZ

PZH

PZL

MAX

Figures 2 and 3 1.2 2.01 2.7 ns

Figures 2 and 3 1.2 2.07 2.7 ns

Figures 2 and 3 (Note 8) 60 400 ps

Figures 2 and 3 (Note 9) 100 500 ps

Figures 2 and 3 (Note 10) 1

Figures 2 and 3 (Note 11) 1.5

Figures 2 and 3 0.66 1.0 ns

Figures 2 and 3 0.62 1.0 ns

RL = 2kΩ, Figures 4 and 5 9.5 14 ns

RL = 2kΩ, Figures 4 and 5 3 14 ns

All channels switching (Note 12) 250 MHz

MAX9173

Quad LVDS Line Receiver with Flow-Through Pinout and “In-Path” Fail-Safe

4 _______________________________________________________________________________________

Typical Operating Characteristics

(VCC= 3.3V, VCM= 1.2V, |VID| = 0.2V, f = 100MHz, input rise and fall time = 1ns (0% to 100%), CL= 15pF, and TA= +25°C, unless otherwise noted.) (Figures 2 and 3)

SUPPLY CURRENT vs. FREQUENCY

MAX9173 toc01

FREQUENCY (MHz)

SUPPLY CURRENT (mA)

1001010.1

100

0.01 1000

CL = 15pF

ALL CHANNELS

SWITCHING

ONE CHANNEL

SWITCHING

SUPPLY CURRENT vs. TEMPERATURE

MAX9173 toc02

TEMPERATURE (°C)

SUPPLY CURRENT (mA)

6035-15 10

-40 85

ALL INPUTS OPEN

DIFFERENTIAL THRESHOLD VOLTAGE

vs. SUPPLY VOLTAGE

MAX9173 toc03

SUPPLY VOLTAGE (V)

DIFFERENTIAL INPUT THRESHOLD VOLTAGE (mV)

3.53.43.33.23.1

-51

-47

-43

-39

-35

-55

3.0 3.6

OUTPUT SHORT-CIRCUIT CURRENT

vs. SUPPLY VOLTAGE

MAX9173 toc04

SUPPLY VOLTAGE (V)

OUTPUT SHORT-CIRCUIT CURRENT (mA)

3.53.43.1 3.2 3.3

-95

-90

-85

-80

-75

-70

-65

-60

-100

3.0 3.6

ALL INPUTS OPEN

OUTPUT HIGH-IMPEDANCE CURRENT

vs. SUPPLY VOLTAGE

MAX9173 toc05

SUPPLY VOLTAGE (V)

OUTPUT HIGH-IMPEDANCE CURRENT (nA)

3.53.43.33.23.1

-0.025

-0.020

-0.015

-0.010

-0.030

3.0 3.6

EN = LOW, EN = HIGH, V

OUT

= 0

OUTPUT HIGH VOLTAGE

vs. SUPPLY VOLTAGE

MAX9173 toc06

SUPPLY VOLTAGE (V)

OUTPUT HIGH VOLTAGE (V)

3.53.43.33.23.1

2.8

2.9

3.0

3.1

3.2

3.3

3.4

3.5

3.6

3.7

2.7

3.0 3.6

IOH = -4mA

OUTPUT LOW VOLTAGE

vs. SUPPLY VOLTAGE

MAX9173 toc07

SUPPLY VOLTAGE (V)

OUTPUT LOW VOLTAGE (mV)

3.53.43.33.23.1

3.0 3.6

IOL = 4mA

DIFFERENTIAL PROPAGATION DELAY

vs. SUPPLY VOLTAGE

MAX9173 toc08

SUPPLY VOLTAGE (V)

DIFFERENTIAL PROPAGATION DELAY (ns)

3.53.43.33.23.1

1.95

2.00

2.05

2.10

2.15

2.20

1.90

3.0 3.6

PLHD

PHLD

DIFFERENTIAL PROPAGATION DELAY

vs. TEMPERATURE

MAX9173 toc09

TEMPERATURE (°C)

DIFFERENTIAL PROPAGATION DELAY (ns)

603510-15

1.85

1.90

1.95

2.00

2.05

2.10

2.15

2.20

2.25

2.30

1.80

-40 85

PLHD

PHLD

MAX9173

Quad LVDS Line Receiver with Flow-Through

Pinout and “In-Path” Fail-Safe

_______________________________________________________________________________________ 5

Typical Operating Characteristics (continued)

(VCC= 3.3V, VCM= 1.2V, |VID| = 0.2V, f = 100MHz, input rise and fall time = 1ns (0% to 100%), CL= 15pF, and TA= +25°C, unless otherwise noted.) (Figures 2 and 3)

DIFFERENTIAL PROPAGATION DELAY

vs. COMMON-MODE VOLTAGE

2.7

2.6

2.5

2.4

2.3

2.2

2.1

2.0

DIFFERENTIAL PROPAGATION DELAY (ns)

1.9

1.8

PHLD

0.1 3.1 COMMON-MODE VOLTAGE (V)

TRANSITION TIME vs. SUPPLY VOLTAGE

720

680

640

TRANSITION TIME (ps)

600

560

3.0 3.6

TLH

THL

SUPPLY VOLTAGE (V)

PLHD

DIFFERENTIAL PROPAGATION DELAY

vs. DIFFERENTIAL INPUT VOLTAGE

2.40

MAX9173 toc10

2.62.11.61.10.6

2.35

2.30

2.25

2.20

2.15

2.10

2.05

2.00

DIFFERENTIAL PROPAGATION DELAY (ns)

1.95

1.90

0.1 DIFFERENTIAL INPUT VOLTAGE (V)

PHLD

PLHD

MAX9173 toc11

1.10.90.3 0.5 0.7

TRANSITION TIME vs. TEMPERATURE

800

MAX9173 toc13

3.53.43.33.23.1

750

700

650

600

550

TRANSITION TIME (ps)

500

450

400

-40 85

TLH

TEMPERATURE (°C)

THL

MAX9173 toc14

6035-15 10

DIFFERENTIAL PROPAGATION DELAY

vs. LOAD

3.0

2.9

2.8

2.7

2.6

2.5

2.4

2.3

2.2

2.1

2.0

1.9

DIFFERENTIAL PROPAGATION DELAY (ns)

1.8

1.7 10 50

PLHD

LOAD (pF)

PHLD

TRANSITION TIME vs. LOAD

2000

1800

1600

1400

1200

1000

TRANSITION TIME (ps)

800

600

400

10 50

LOAD (pF)

THL

403020

TLH

403020

MAX9173 toc12

MAX9173 toc15

DIFFERENTIAL PULSE SKEW

vs. SUPPLY VOLTAGE

120 110 100

90 80 70 60 50 40 30

DIFFERENTIAL PULSE SKEW (ps)

20 10

3.0 3.6 SUPPLY VOLTAGE (V)

400

MAX9173 toc16

3.53.43.33.23.1

350

300

250

200

150

100

DIFFERENTIAL PULSE SKEW (ps)

DIFFERENTIAL PULSE SKEW

vs. INPUT TRANSITION TIME

f = 50MHz

1.0 3.0 INPUT TRANSITION TIME (ns)

2.52.01.5

MAX9173 toc17

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