MAX3877, MAX3878 2.5Gbps, +3.3V Clock and Data Retiming ICs with Vertical Threshold Adjust

Description

The MAX3877/MAX3878 are compact, low-power clock recovery and data retiming ICs for 2.488Gbps SONET/ SDH applications. The fully integrated phase-locked loop (PLL) recovers a synchronous clock signal from the serial NRZ data input, which is retimed by the recovered clock. An additional 2.488Gbps serial input is available for system loopback diagnostic testing, or this input can be connected to a 155MHz reference clock to maintain a valid clock output in the absence of data transitions. The MAX3877/MAX3878 provide vertical threshold and phase-adjust control to optimize system BER in DWDM applications.

These devices provide both loss-of-lock (active-low LOL) and loss-of-signal (LOS) monitors. Differential CML outputs are provided for both clock and data signals on the MAX3877, and differential PECL outputs are provided for clock and data signals on the MAX3878.

The MAX3877/MAX3878 are designed for both section-regenerator and terminal-receiver applications in OC-48/STM-16 transmission systems. Their jitter performance exceeds all of the SONET/SDH specifications. These devices operate from a single +3.0V to +3.6V supply over a -40°C to +85°C temperature range. Typical power consumption is only 540mW with a +3.3V supply (MAX3878). They are available in a 32-pin TQFP-EP package with an exposed pad, as well as in die form.

An evaluation kit is available: MAX3877EVKIT, MAX3878EVKIT

Key Features

Applications/Uses

Exceeds ANSI, ITU, and Bellcore SONET/SDH Specifications
Adjustable Input Threshold (±180mV)
10mVp-p to 1.2Vp-p Differential Input Range
540mW Power Dissipation (at +3.3V)
Fully Integrated Clock Recovery and Data Retiming
Optional Holdover Capability (Using External Reference Clock)
0.003UI_RMS Clock Jitter Generation
Tolerates >2000 Consecutive Identical Digits
Additional 2.488Gbps Input for Diagnostic Loopback Testing
Differential PECL or CML Data and Clock Outputs
Loss-of-Signal Indicator
Loss-of-Lock Indicator

Controllers

Key Specifications: Clock and Data Recovery

Part Number

Functions

Target Oper. Range
(Gbps)

Data Rate
(Mbps)

Multirate

V_SUPPLY
(V)

I_CC
(mA)

I/O Type

Input Sens.
(mV)

Package/Pins

Oper. Temp.
(°C)

Price

min

max

typ

See Notes

MAX3878

CDR

1 to 4.5

2488

3.3

163

CML

TQFP-EP/32

-40 to +85

$25.60 @1k

See All Clock and Data Recovery (8)

Diagram

Typical Operating Circuit

Application Notes

Application Note 462: HFAN-04.0.2: Converting between RMS and Peak-to-Peak Jitter at a Specified BER - MAX3877, MAX3878
Application Note 794: HFAN-04.0.3: Jitter in Digital Communication Systems, Part 1 - MAX3877, MAX3878
Application Note 987: HFAN-04.0.4: Jitter in Digital Communication Systems, Part 2 - MAX3877, MAX3878
Application Note 1095: HFTA-05.0: Statistical Confidence Levels for Estimating BER Probability - MAX3877, MAX3878

Evaluation Kits

MAX3877EVKIT, MAX3878EVKIT

Design Guides

Fiber (PDF)

Reliability Reports

Show FIT data for:

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Software/Models

none

Ordering Information

Notes:

Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
Part number suffixes: T or T&R = tape and reel;+ = RoHS/lead-free;# = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions.
* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.

Devices: 1-6 of 6

MAX3877 Free
Sample Buy Status

Package: TYPE PINS FOOTPRINT

DRAWING CODE/VAR *

Temp RoHS/Lead-Free?
Materials Analysis

MAX3877E/D N/A No Longer Available DICE SALES;NA pin;0 mm²

Land Pattern: Not Applicable
Use pkgcode/variation: DICE*
See data sheet

MAX3877EHJ

Active TQFP-EP;32 pin;52 mm²
Outline Drawing: 21-0079 (PDF)
Land Pattern: 90-0325 (PDF)
Use pkgcode/variation: H32E-5*
-40°C to +85°C RoHS/Lead-Free: No
Materials Analysis

MAX3877EHJ-T

Active

Land Pattern: Not Available

-40°C to +85°C See data sheet

MAX3878 Free
Sample Buy Status

Package: TYPE PINS FOOTPRINT

DRAWING CODE/VAR *

Temp RoHS/Lead-Free?
Materials Analysis

MAX3878E/D

Active DICE SALES;NA pin;0 mm²

Land Pattern: Not Applicable
Use pkgcode/variation: DICE*
See data sheet

MAX3878EHJ

Active TQFP-EP;32 pin;52 mm²
Outline Drawing: 21-0079 (PDF)
Land Pattern: 90-0325 (PDF)
Use pkgcode/variation: H32E-5*
-40°C to +85°C RoHS/Lead-Free: No
Materials Analysis

MAX3878EHJ-T

Active

Land Pattern: Not Available

-40°C to +85°C See data sheet

More Information

New Product Press Release 2001-09-27

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Description
Key Features
Applications/Uses
Key Specifications
Diagram

Data Sheet
Application Notes
Design Guides
Engineering Journals
Reliability Reports
Software/Models
Evaluation Kits

Price and Availability
Samples
Buy Online
Package Information
Lead-Free Information

Related Products
Notes and Comments
Evaluation Kits

Document Ref.: 19-2062; Rev 0; 2001-06-28
This page last modified: 2007-06-25