Datasheet

ManualsBrandsMAXIM INTEGRATED ManualsLogic ICsLogic IC - Converter Converter uMAX 8

General Description

The MAX9377/MAX9378 are fully differential, high-

speed, low-jitter anything-to-LVPECL and anything-to-

LVDS 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 ampli-

tude 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

OUT

RSTGND

OUTIN

SEL

TOP VIEW

MAX9377

MAX9378

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.

PART TEMP RANGE PIN-PACKAGE

MAX9377EUA -40°C to +85°C 8 µMAX

MAX9378EUA -40°C to +85°C 8 µMAX

SEL

÷ 4

RST

LVDS/ANY

LVPECL (MAX9377)

LVDS (MAX9378)

Functional Diagram

Summary of content (9 pages)

PAGE 1
9-2846; Rev 1; 7/03 Anything-to-LVPECL/LVDS Translators with Pin-Selectable Divide-by-Four 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 ♦ 2psRMS (max) Random Jitter ♦ Minimum 100mV Differential Input to Guarantee AC Specifications ♦ Temperature-Compensated LVPECL Output ♦ +3.0V to +3.
PAGE 2
MAX9377/MAX9378 Anything-to-LVPECL/LVDS Translators with Pin-Selectable Divide-by-Four ABSOLUTE MAXIMUM RATINGS 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 VCC to GND ...........................................................-0.
PAGE 3
Anything-to-LVPECL/LVDS Translators with Pin-Selectable Divide-by-Four (VCC = +3.0V to +3.6V, differential input voltage |VID| = 0.1V to 3.0V, input voltage (VIN, V IN) = 0 to VCC, input common-mode voltage VCM = 0.05V to (VCC - 0.05V), LVPECL outputs terminated with 50Ω ±1% to (VCC - 2.0V), LVDS outputs terminated with 100Ω ±1%, TA = -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.
PAGE 4
MAX9377/MAX9378 Anything-to-LVPECL/LVDS Translators with Pin-Selectable Divide-by-Four AC ELECTRICAL CHARACTERISTICS (VCC = +3.0V to +3.6V, differential input voltage |VID| = 0.1V to 1.2V, input frequency ≤ 1.34GHz, differential input transition time = 125ps (20% to 80%), input voltage (VIN, V IN) = 0 to VCC, input common-mode voltage VCM = 0.05V to (VCC - 0.05V), LVPECL outputs terminated with 50Ω ±1% to (VCC - 2.0V) MAX9377, LVDS outputs terminated with RL = 100Ω ±1% (MAX9378), TA = -40°C to +85°C.
PAGE 5
Anything-to-LVPECL/LVDS Translators with Pin-Selectable Divide-by-Four 30 MAX9378 MAX9377 20 10 MAX9377 700 600 500 480 460 tPHL (MAX9377) tPLH (MAX9377) 440 420 tPLH (MAX9378) 400 380 360 tPHL (MAX9378) 340 MAX9378 400 500 MAX9377/78 toc03 800 320 0 300 500 1000 1500 2000 300 0 500 FREQUENCY (MHz) 1000 1500 2000 FREQUENCY (MHz) -40 -15 10 35 60 85 TEMPERATURE (°C) OUTPUT RISE/FALL TIME vs.
PAGE 6
Anything-to-LVPECL/LVDS Translators with Pin-Selectable Divide-by-Four MAX9377/MAX9378 Pin Description PIN NAME FUNCTION Frequency Divider Select Input. High = divide by four, low = no division. Internal 75kΩ pulldown to GND. 1 SEL 2 IN Differential LVDS/Any Noninverting Input 3 IN Differential LVDS/Any Inverting Input 4 GND 5 RST 6 OUT 7 OUT 8 VCC Ground Frequency Divider Reset Input. Active high, asynchronous, reset. Internal 75kΩ pulldown to GND.
PAGE 7
Anything-to-LVPECL/LVDS Translators with Pin-Selectable Divide-by-Four DRV VCC VOD OUT VOS RL / 2 VID CL VCM (MAX) = VCC - 0.05V MAX9377/MAX9378 RL / 2 OUT CL GND VOD(+) 80% VID 80% VCM (MIN) = 0.05V 0V GND VOD(-) 20% 20% OUT - OUT tR Figure 1. Differential Input Definition tF Figure 2.
PAGE 8
MAX9377/MAX9378 Anything-to-LVPECL/LVDS Translators with Pin-Selectable Divide-by-Four IN IN tPLH 1 OUT IN/4 tPCO 4 OUT tPCO RST SEL OUT tDR tSET tSEL Figure 4. Frequency Divider and Reset Timing Diagram Figure 5.
PAGE 9
Anything-to-LVPECL/LVDS Translators with Pin-Selectable Divide-by-Four 8 INCHES DIM A A1 A2 b E ÿ 0.50±0.1 H c D e E H 0.6±0.1 L 1 1 α 0.6±0.1 S BOTTOM VIEW D MIN 0.002 0.030 MAX 0.043 0.006 0.037 0.014 0.010 0.007 0.005 0.120 0.116 0.0256 BSC 0.120 0.116 0.198 0.188 0.026 0.016 6∞ 0∞ 0.0207 BSC 8LUMAXD.EPS 4X S 8 MILLIMETERS MAX MIN 0.05 0.75 1.10 0.15 0.95 0.25 0.36 0.13 0.18 2.95 3.05 0.65 BSC 2.95 3.05 4.78 5.03 0.41 0.66 0∞ 6∞ 0.