MAXIM MAX9156 User Manual

General Description

The MAX9156 is an LVPECL-to-LVDS level translator
that accepts a single LVPECL input and translates it to
a single LVDS output. It is ideal for interfacing between
LVPECL and LVDS interfaces in systems that require
minimum jitter, noise, power, and space.

Ultra-low, 23ps

p-p

added deterministic jitter and

0.6ps

RMS

added random jitter ensure reliable commu­nication in high-speed links that are highly sensitive to
timing errors, especially those incorporating clock-and­data recovery, PLLs, serializers, or deserializers. The
MAX9156’s switching performance guarantees a
200Mbps data rate, but minimizes radiated noise by
guaranteeing 0.5ns minimum output transition time.

The MAX9156 operates from a single +3.3V supply and
consumes only 10mA supply current over a -40°C to
+85°C temperature range. It is available in a tiny 6-pin
SC70 package (half the size of a SOT23). Refer to the
MAX9155 data sheet for a low-jitter, low-noise LVDS
repeater in an SC70 package.

Applications

Digital Cross-Connects

Add/Drop Muxes

Network Switches/Routers

Cellular Phone Base Stations

DSLAMs

Multidrop Buses

Features

♦ Tiny SC70 Package

♦ Ultra-Low Jitter

23ps

p-p

Added Deterministic Jitter

(2

23

-1 PRBS)

0.6ps

RMS

Added Random Jitter

♦ 0.5ns (min) Transition Time Minimizes Radiated

Noise

♦ 200Mbps Guaranteed Data Rate

♦ Low 10mA Supply Current

♦ Output Conforms to ANSI/EIA/TIA-644 LVDS

Standard

♦ High-Impedance Inputs and Outputs in

Power-Down Mode

MAX9156

Low-Jitter, Low-Noise LVPECL-to-LVDS Level

Translator in an SC70 Package

________________________________________________________________ Maxim Integrated Products 1

Pin Configuration

19-2216; Rev 0; 10/01

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.

Ordering Information

Typical Operating Circuit

PART TEMP. RANGE

MAX9156EXT-T -40°C to +85°C 6 SC70-6 ABD

PIN -

PA C K A G E

TOP

M ARK

TOP VIEW

V

CC

OUT-

GND

LVPECL
DRIVER

3.3V

IN+

IN-

MAX9156

GND

OUT+

OUT-

LVDS

SIGNALS

MAX9156

1 6 OUT+

2

34

SC70

5V

CC

IN+IN-

MAX9156

Low-Jitter, Low-Noise LVPECL-to-LVDS Level
Translator in an SC70 Package

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

Short-Circuit Duration (OUT+, OUT-) .........................Continuous

Continuous Power Dissipation (T

A

= +70°C)

6-Pin SC70 (derate 3.1mW/°C above +70°C)..............245mW

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

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

Operating Temperature Range ...........................-40°C to +85°C

ESD Protection

Human Body Model, IN+, IN-, OUT+, OUT- ....................±8kV

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

DC ELECTRICAL CHARACTERISTICS

(VCC= +3.0V to +3.6V, RL= 100Ω ±1%, |V

ID

|

= 0.05V to VCC, VCM= |VID/ 2|to VCC- |VID/ 2|, TA= -40°C to +85°C, unless otherwise

noted. Typical values at V

CC

= +3.3V, TA= +25°C.) (Notes 1, 2)

LVPECL INPUT

Differential Input High Threshold V

Differential Input Low Threshold V

Input Resistor R

Input Current I

Power-Off Input Current I

LVDS OUTPUT

Differential Output Voltage V

Differential Output Voltage ∆V

Offset (Common-Mode) Voltage V

Change in VOS for
Complementary Output States

Output High Voltage V

Output Low Voltage V

Differential Output Voltage V

Power-Off Output Leakage
Current

Differential Output Resistance RO

Output Short Current I

POWER SUPPLY

Supply Current I

PARAMETER SYMBOL CONDITIONS MIN TYP MAX U N I T S

TH

TL

Figure 1 360 1328 kΩ

IN

IN+ = 3.6V, IN- = 0 -10 2.7 10

, I

IN+

IN-

IN+ = 0, IN- = 3.6V -10 2.7 10

, I

IN+

OD

OD

OS

∆V

OS

OH

OL

OD+

IO

OFF

DIFFVCC

SC

CC

VCC = 0,

IN-

Figure 1

Figure 2 250 360 450 mV

Figure 2 0.008 25 mV

Figure 2 1.125 1.25 1.375 V

Figure 2 0.005 25 mV

IN+, IN- open +250 +360 +450 mV

VCC = 0

= +3.6V or 0 100 260 400 Ω

VID = +50mV, OUT+ = GND -5 -15

VID = -50mV, OUT- = GND -5 -15

750mV

-50 -7 mV

IN+ = 3.6V, IN- = 0 -10 2.7 10

IN+ = 0, IN- = 3.6V -10 2.7 10

1.44 1.6 V

0.9 1.08 V

O U T+ = 3.6V , other outp ut op en -10 0.02 10

O U T- = 3.6V , other outp ut op en -10 0.02 10

10 15 mA

µA

µA

µA

mA

MAX9156

Low-Jitter, Low-Noise LVPECL-to-LVDS Level

Translator in an SC70 Package

_______________________________________________________________________________________ 3

Note 1: All devices are 100% tested at TA= +25°C. Limits over temperature are guaranteed by design and characterization.
Note 2: 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

TH

, VTL, VOD, and ∆VOD.

Note 3: Guaranteed by design and characterization.
Note 4: Signal generator output (unless otherwise noted): frequency = 100MHz, 50% duty cycle, R

O

= 50Ω, tR= 1.5ns, and tF=

1.5ns (0% to 100%).

Note 5: C

L

includes scope probe and test jig capacitance.

Note 6: Signal generator output for t

DJ

: VOD= 150mV, VOS= 1.2V, tDJincludes pulse (duty cycle) skew.

Note 7: Signal generator output for t

RJ

: VOD= 150mV, VOS= 1.2V.

Note 8: t

SKPP1

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

at the same supply voltage, input common-mode voltage, and ambient temperature.

Note 9: t

SKPP2

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

Note 10: Device meets V

OD

DC specification and AC specifications while operating at f

MAX

.

Note 11: Jitter added to the input signal.

AC ELECTRICAL CHARACTERISTICS

(VCC= +3.0V to +3.6V, RL= 100Ω ±1%, CL= 10pF, |V

ID

|

= 0.15V to VCC, VCM= |VID/ 2|to VCC- |VID/ 2|, TA= -40°C to +85°C, unless

otherwise noted. Typical values at V

CC

= +3.3V, TA= +25°C.) (Notes 3, 4, 5) (Figures 3, 4)

p-p

Differential Propagation Delay High
to Low

Differential Propagation Delay Low to
High

Added Deterministic Jitter
(Notes 6, 11)

Added Random Jitter (Notes 7, 11) t

Differential Part-to-Part Skew (Note 8) t

Differential Part-to-Part Skew (Note 9) t

Switching Supply Current I

Rise Time t

Fall Time t

Input Frequency (Note 10) f

PARAMETER SYMBOL CONDITIONS MIN TYP MAX U N I T S

t

PHLD

t

PLHD

t

DJ

RJ

SKPP1

SKPP2

CCSW

TLH

THL

MAX

1.3 2.0 2.8 ns

1.3 2.0 2.8 ns

200Mbps 223-1 PRBS data pattern 23 100 ps

fIN = 100MHz 0.6 2.9 ps

0.17 0.6 ns

1.5 ns

11.3 18 mA

0.5 0.66 1.0 ns

0.5 0.64 1.0 ns

100 MHz

RMS