MAXIM MAX9377, MAX9378 Technical data

General Description

The MAX9377/MAX9378 are fully differential, high­speed, low-jitter anything-to-LVPECL and anything-to­LVDS translators, respectively, with a selectable
divide-by-four function. Low propagation delay and
high speed make them ideal for various high-speed
network routing and backplane applications at speeds
up to 2GHz in nondivide mode.

The MAX9377/MAX9378 accept any differential input
signal within the supply rails and with minimum ampli­tude of 100mV. Inputs are fully compatible with the
LVDS, LVPECL, HSTL, and CML differential signaling
standards. The MAX9377 outputs are LVPECL and
have sufficient current to drive 50Ω transmission lines.
The MAX9378 outputs are LVDS and conform to the
ANSI EIA/TIA-644 LVDS standard.

The MAX9377/MAX9378 are available in 8-pin µMAX
packages and operate from a single +3.3V supply over
the -40°C to +85°C temperature range.

Applications

Backplane Logic Standard Translation

LAN

WAN

DSLAM

DLC

Features

♦ Guaranteed 2GHz Switching Frequency

♦ Accept LVDS/LVPECL/Anything Inputs

♦ Pin-Selectable Divide-by-Four Function

♦ 421ps (typ) Propagation Delays (MAX9377)

♦ 30ps (max) Pulse Skew

♦ 2ps

RMS

(max) Random Jitter

♦ Minimum 100mV Differential Input to Guarantee

AC Specifications

♦ Temperature-Compensated LVPECL Output

♦ +3.0V to +3.6V Power-Supply Operating Range

♦ ESD Protection: >2kV Human Body Model (HBM)

MAX9377/MAX9378

Anything-to-LVPECL/LVDS Translators

with Pin-Selectable Divide-by-Four

________________________________________________________________ Maxim Integrated Products 1

Pin Configuration

Ordering Information

19-2846; Rev 1; 7/03

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.

Functional Diagram

MAX9377EUA -40°C to +85°C 8 µMAX
MAX9378EUA -40°C to +85°C 8 µMAX

PART TEMP RANGE PIN-PACKAGE

TOP VIEW

RST

1

SEL

2

3

IN

4

MAX9377
MAX9378

87V

6

5

OUTIN

OUT

RSTGND

CC

LVDS/ANY

SEL

÷ 4

LVPECL (MAX9377)
OR
LVDS (MAX9378)

MAX9377/MAX9378

Anything-to-LVPECL/LVDS Translators
with Pin-Selectable Divide-by-Four

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 +4.1V

Inputs (IN, IN, RST, SEL)............................-0.3V to (V

CC

+ 0.3V)

IN to IN................................................................................±3.0V

Short-Circuit Duration (MAX9378 OUT, OUT) ............Continuous

Continuous Output Current .................................................50mA

Surge Output Current .......................................................100mA

Continuous Power Dissipation (T

A

= +70°C)

8-µMAX (derate 5.9mW/°C above +70°C) ...............470.6mW

θ

JA

in Still Air...........................................................+170°C/W

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

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

ESD Protection

Human Body Model (IN, IN, OUT, OUT) ..............................≥2kV

Soldering Temperature (10s) ...........................................+300°C

DC ELECTRICAL CHARACTERISTICS

(VCC= +3.0V to +3.6V, differential input voltage |VID| = 0.1V to 3.0V, input voltage (VIN, VIN) = 0 to VCC, input common-mode voltage
V

CM

= 0.05V to (VCC- 0.05V), LVPECL outputs terminated with 50Ω ±1% to (VCC- 2.0V), LVDS outputs terminated with 100Ω ±1%,

T

A

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

otherwise noted.) (Notes 1, 2, 3)

PARAMETER SYMBOL CONDITIONS

LVCMOS/LVTTL INPUTS (RST, SEL)

Input High
Voltage

Input Low Voltage V

Input High Current I

Input Low Current I

DIFFERENTIAL INPUTS (IN, IN)

Differential Input
Threshold

V

V

IH

IL

THD

IH

IL

V

= V

IN

V

IL

or 2V 0 150 0 150 0 150 µA

CC

= 0 or 0.8V -20 +20 -20 +20 -20 +20 µA

MIN TYP MAX MIN TYP MAX MIN TYP MAX

2.0 V

GND 0.8 GND 0.8 GND 0.8 V

-100 ±6 +100 -100 ±6 +100 -100 ±6 +100 mV

-40°C +25°C +85°C

2.0 V

CC

2.0 V

CC

CC

UNITS

V

Input Current IIN, I INVIN, V IN = VCC or 0V -20 +20 -20 +20 -20 +20 µA

Input Common­Mode Voltage

LVPECL OUTPUTS (OUT, OUT) (MAX9377)

Single-Ended
Output High
Voltage

Single-Ended
Output Low
Voltage

Differential Output
Voltage

LVDS OUTPUTS (OUT, OUT) (MAX9378)

Differential Output
Voltage

V

V

V

V

V

V

Figure 1 0.05

CM

Figure 3

OH

Figure 3

OL

-

OH

Figure 3 595 725 595 725 595 725 mV

OL

Figure 2 250 370 450 250 363 450 250 348 450 mV

OD

V

CC

1.085

V

CC

1.830

VCC -

0.992

VCC -

1.717

V

CC

0.05

VCC-

0.880

VCC -

1.620

-

0.05

VCC -

1.025

VCC -

1.810

V

-

CC

0.05

0.05

-

VCC -

VCC -

VCC -

1.033

0.880

1.025

-

VCC -

VCC -

VCC -

1.755

1.620

1.810

VCC -

0.978

VCC -

1.699

V

CC

0.05

VCC -

0.880

VCC -

1.620

­V

V

V

MAX9377/MAX9378

Anything-to-LVPECL/LVDS Translators

with Pin-Selectable Divide-by-Four

_______________________________________________________________________________________ 3

DC ELECTRICAL CHARACTERISTICS (continued)

(VCC= +3.0V to +3.6V, differential input voltage |VID| = 0.1V to 3.0V, input voltage (VIN, VIN) = 0 to VCC, input common-mode voltage
V

CM

= 0.05V to (VCC- 0.05V), LVPECL outputs terminated with 50Ω ±1% to (VCC- 2.0V), LVDS outputs terminated with 100Ω ±1%,

T

A

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

otherwise noted.) (Notes 1, 2, 3)

PARAMETER SYMBOL CONDITIONS

Change in
Magnitude of V
Between
Complementary
Output States

Offset Common­Mode Voltage

Change in
Magnitude of V
Between
Complementary
Output States

Output Short­Circuit Current,
Either Output
Shorted to GND

Output Short­Circuit Current,
Outputs Shorted
Together

POWER SUPPLY

Supply Current I

OD

∆V

 Figure 2 1.0 20 1.0 20 1.0 20 mV

OD

V

 Figure 2 1.125 1.375 1.125 1.250 1.375 1.125 1.375 V

OS

OS

∆VOS Figure 2 0.1 20 0.1 20 0.1 20 mV

= ±100mV, one

V

ID

output GND, other



I

OS

output open or
shorted to GND

V

= ±100mV,

ID



I

OSAB

CC

= V

V

OUT

MAX9377, all pins
open except V
GND

MAX9378, RL = 100,
quiescent, inputs are
open

OUT

CC

,

-40°C +25°C +85°C

MIN TYP MAX MIN TYP MAX MIN TYP MAX

19.0 24 19.0 24 19.0 24 mA

4.0 12 4.0 12 4.0 12 mA

13 22 15 22 17 22

18.0 30 20 30 22 30

UNITS

mA