MAX3890ECB-D Maxim Integrated, MAX3890ECB-D Datasheet

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MAX3890ECB-D

Manufacturer Part Number
MAX3890ECB-D
Description
Serializers & Deserializers - Serdes 3.3V 2.5Gbps SDH/ SONET 16
Manufacturer
Maxim Integrated
Datasheet
The MAX3890 serializer is ideal for converting 16-bit-
wide, 155Mbps parallel data to 2.5Gbps serial data in
ATM and SDH/SONET applications. Operating from a
single +3.3V supply, this device accepts low-voltage
differential-signal (LVDS) clock and data inputs for
interfacing with high-speed digital circuitry, and deliv-
ers positive-referenced emitter-coupled logic (PECL)
serial data and clock outputs. A fully integrated phase-
locked loop (PLL) synthesizes an internal 2.5GHz serial
clock from a 155.52MHz, 77.76MHz, 51.84MHz, or
38.88MHz reference clock. A loopback data output is
provided to facilitate system diagnostic testing.
The MAX3890 is available in the extended temperature
range (-40°C to +85°C) in a 64-pin TQFP exposed-pad
(EP) package.
For free samples and the latest literature, visit www.maxim-ic.com or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
19-1498; Rev 1; 12/99
2.5Gbps SDH/SONET Transmission Systems
2.5Gbps ATM/SONET Access Nodes
Add/Drop Multiplexers
Digital Cross-Connects
ATM Backplanes
GENERATION
OVERHEAD
155MHz REF CLOCK INPUT
+3.3V, 2.5Gbps, SDH/SONET 16:1 Serializer
________________________________________________________________ Maxim Integrated Products
General Description
with Clock Synthesis and LVDS Inputs
THIS SYMBOL REPRESENTS A TRANSMISSION LINE
OF CHARACTERISTIC IMPEDANCE (Z
PDI0-
PDI15+
PDI15-
PCLKI+
PCLKI-
PCLKO+
PCLKO-
GND
PDI0+ RCLK+ RCLK-
Applications
FIL+
330nF
MAX3890
FIL-
CLKSET
SLBO+
0
= 50Ω).
+3.3V
V
CC
SLBO-
SCLKO+
SCLKO-
TTL
SOS
SDO+
SDO-
o Single +3.3V Supply
o 495mW Power Consumption
o Exceeds ANSI, ITU, and Bellcore Specifications
o 155Mbps (16-bit wide) Parallel to 2.5Gbps Serial
o Clock Synthesis for 2.5Gbps
o Multiple Clock Reference Frequencies
o LVDS Parallel Clock and Data Inputs
o Additional High-Speed Output for System
*EP = Exposed pad
Pin Configuration appears at end of data sheet.
MAX3890ECB
Conversion
(155.52MHz, 77.76MHz, 51.84MHz, 38.88MHz)
Loopback Testing
PART
OPTIONAL CONNECTION TO MAX3880
FOR SYSTEM LOOPBACK TESTING.
130Ω
82Ω
+3.3V
Typical Operating Circuit
130Ω
82Ω
TEMP. RANGE
-40°C to +85°C
82Ω
130Ω
Ordering Information
+3.3V
130Ω
82Ω
MAX3867
+3.3V
V
CC
PIN-PACKAGE
64 TQFP-EP*
Features
1

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MAX3890ECB-D Summary of contents

Page 1

... Conversion o Clock Synthesis for 2.5Gbps o Multiple Clock Reference Frequencies (155.52MHz, 77.76MHz, 51.84MHz, 38.88MHz) o LVDS Parallel Clock and Data Inputs o Additional High-Speed Output for System Loopback Testing Applications PART MAX3890ECB *EP = Exposed pad Pin Configuration appears at end of data sheet. +3.3V TTL CLKSET V SOS CC SDO+ ...

Page 2

SDH/SONET 16:1 Serializer with Clock Synthesis and LVDS Inputs ABSOLUTE MAXIMUM RATINGS Terminal Voltage (with respect to GND) V .......................................................................-0.5V to +5V CC All Inputs, FIL+, FIL- ...............................-0. Output Current LVDS Outputs (PCLKO±)................................................10mA PECL Outputs (SDO±, ...

Page 3

SDH/SONET 16:1 Serializer with Clock Synthesis and LVDS Inputs DC ELECTRICAL CHARACTERISTICS (continued +3.0V to +3.6V, differential LVDS loads = 100Ω ±1%, PECL loads = 50Ω ± -40°C to +85°C, unless ...

Page 4

SDH/SONET 16:1 Serializer with Clock Synthesis and LVDS Inputs (V = +3.3V, PECL loads = 50Ω ±1 SUPPLY CURRENT vs. TEMPERATURE 200 180 160 140 120 PECL OUTPUTS UNTERMINATED 100 -50 - TEMPERATURE ...

Page 5

SDH/SONET 16:1 Serializer with Clock Synthesis and LVDS Inputs PIN NAME 1, 17, 33, 48, 49, 63 GND 10, 13 14, 32, 56, 60 SLBO- 4 SLBO+ 6 SOS 8 SCLKO- ...

Page 6

SDH/SONET 16:1 Serializer with Clock Synthesis and LVDS Inputs Detailed Description The MAX3890 converts 16-bit-wide, 155Mbps data to 2.5Gbps serial data (Figure 1 composed of a 16- bit parallel input register, a 16-bit shift register, control ...

Page 7

SDH/SONET 16:1 Serializer with Clock Synthesis and LVDS Inputs PCLKO PCLKI PARALLEL VALID PARALLEL DATA* INPUT DATA (PDI_) SERIAL OUTPUT DATA (SDO) NOTE: SIGNALS SHOWN ARE DIFFERENTIAL. FOR EXAMPLE, PCLKO = (PCLKO+) - (PCLKO-). *PDI 15 = D15; ...

Page 8

SDH/SONET 16:1 Serializer with Clock Synthesis and LVDS Inputs V CC 50Ω 50Ω GND OUTPUT CIRCUIT Figure 3. Current-Mode Logic Applications Information Alternative PECL-Output Termination Figure 4 shows alternative PECL-output termination methods. Use Thevenin-equivalent termination when a (V ...

Page 9

SDH/SONET 16:1 Serializer with Clock Synthesis and LVDS Inputs PD+ D PD- V PD- SINGLE-ENDED OUTPUT V PD PD+ PD- 0V (DIFF) DIFFERENTIAL OUTPUT Figure 5. Driver Output Levels _______________________________________________________________________________________ 100Ω L ...

Page 10

SDH/SONET 16:1 Serializer with Clock Synthesis and LVDS Inputs TOP VIEW GND SLBO- 3 SLBO SOS SCLKO- 8 SCLKO SDO- 11 SDO+ ...

Page 11

SDH/SONET 16:1 Serializer with Clock Synthesis and LVDS Inputs ______________________________________________________________________________________ Package Information 11 ...

Page 12

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 12 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 1999 Maxim Integrated Products ...

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