MAX3640UCM Maxim Integrated Products, MAX3640UCM Datasheet

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MAX3640UCM

Manufacturer Part Number
MAX3640UCM
Description
Manufacturer
Maxim Integrated Products
Datasheet

Specifications of MAX3640UCM

Case
TQFP
Dc
00+

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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.
The MAX3640 is a dual-path crosspoint switch for use
at OC-12 data rates. The MAX3640 can be used to
receive and transmit 622Mbps low-voltage differential
signals (LVDS) across a backplane with minimum jitter
accumulation. Each path incorporates input buffers,
multiplexers, a crosspoint switch, and output drivers.
The four output channels have a redundant set of out-
puts for test or fanning purposes. The device offers sig-
nal-path redundancy for critical data streams.
The MAX3640 has a unique power-saving feature.
When a set of four output channels has been de-select-
ed, the output drivers are powered down to reduce
power consumption by 165mW. The fully differential
architecture ensures low crosstalk, jitter accumulation,
and signal skew.
The MAX3640 is available in a 48-pin TQFP package
and operates from a +3.3V supply over the 0°C to
+85°C temperature range.
19-4800; Rev 0; 3/00
SONET/SDH Backplanes
High-Speed Parallel Links
Digital Cross-Connects
System Interconnects
ATM Switch Cores
________________________________________________________________ Maxim Integrated Products
TRANSCEIVER
OPTICAL
LASER DRIVER
MAX3869
TIA AND LA
MAX3866
General Description
Applications
MAX3876
2.5Gbps
CDR
Dual 4:2 Crosspoint Switch
INTERCONNECT
MUX/DEMUX
4-CHANNEL
MAX3831
o Single +3.3V Supply
o 257mW Power Consumption (four output
o 2.8ps
o 42ps Output Deterministic Jitter
o Power-Down Feature for Deselected Outputs
o 110ps Channel-to-Channel Skew
o 240ps Output Edge Speed
o LVDS Inputs/Outputs
o LVDS Output 3-State Enable
Pin Configuration appears at end of data sheet.
MAX3640UCM
channels enabled)
3.3V, 622Mbps LVDS,
PART
RMS
622Mbps
Output Random Jitter
Typical Operating Circuit
TEMP. RANGE
PARALLEL DATA
OUTPUT
0°C to +85°C
CROSSPOINT
Ordering Information
MAX3640
SWITCH
622Mbps
PIN-PACKAGE
48 TQFP
Features
SOURCE A
SOURCE B
SONET
SONET
1

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MAX3640UCM Summary of contents

Page 1

... RMS o 42ps Output Deterministic Jitter o Power-Down Feature for Deselected Outputs o 110ps Channel-to-Channel Skew o 240ps Output Edge Speed o LVDS Inputs/Outputs o LVDS Output 3-State Enable Applications PART MAX3640UCM Pin Configuration appears at end of data sheet. MAX3831 4-CHANNEL 2.5Gbps INTERCONNECT MUX/DEMUX MAX3876 CDR Features ...

Page 2

LVDS, Dual 4:2 Crosspoint Switch ABSOLUTE MAXIMUM RATINGS Supply Voltage, V ................................................-0.5V to 5.0V CC Input Voltage (LVDS, TTL)..........................-0. Output Voltage (LVDS) ...............................-0. Continuous Power Dissipation (T = +85°C) A 48-Pin TQFP (derate 12.5mW/°C) ...

Page 3

AC ELECTRICAL CHARACTERISTICS (V = +3.0V to 3.6V, LVDS differential load = 100Ω ±1 unless otherwise noted.) (Note 1) PARAMETER SYMBOL Parallel Input/Output Data Rate Output Rise/Fall Time t Output Random Jitter Output Deterministic Jitter DJ LVDS Output ...

Page 4

LVDS, Dual 4:2 Crosspoint Switch (V = +3.3V +25°C, unless otherwise noted SUPPLY CURRENT vs. TEMPERATURE 150 140 130 8 OUTPUTS ENABLED 120 110 100 OUTPUTS ENABLED ...

Page 5

PIN NAME 1, 12, 25, 36 11, 26, 35 GND DIA3+, DIA4+, DIA1 45, 47 DIA2+ DIA3-, DIA4-, DIA1 46, 48 DIA2- DIB1+, DIB2+, DIB3 13, 15 DIB4+ DIB1-, DIB2-, ...

Page 6

LVDS, Dual 4:2 Crosspoint Switch DIA1+ 1 DIA1- DIB1+ 0 DIB1- DIA2+ 1 DIA2- DIB2+ 0 DIB2- DIA3+ 1 DIA3- DIB3+ 0 DIB3- DIA4+ 1 DIA4- DIB4+ 0 DIB4- IN_SEL Figure 2. Functional Diagram 6 _______________________________________________________________________________________ 2x2 CROSSPOINT ...

Page 7

Table 1. Output Routing ROUTING CONTROLS IN_SEL SEL1 SEL2 IN_SEL SEL3 SEL4 ...

Page 8

LVDS, Dual 4:2 Crosspoint Switch Applications Information Interfacing LVPECL Outputs to MAX3640 LVDS Inputs To DC-couple between LVPECL and LVDS, use the resistor network shown in Figure 3. Note that the LVPECL output is optimized for a 50Ω ...

Page 9

V CC 45Ω 45Ω Figure 5. LVDS Output Model Pin Configuration GND 2 DIA3+ 3 DIA3- 4 DIA4+ 5 DIA4- 6 MAX3640 DIB1+ 7 DIB1- 8 DIB2+ 9 DIB2- 10 GND _______________________________________________________________________________________ 3.3V, ...

Page 10

LVDS, Dual 4:2 Crosspoint Switch 10 ______________________________________________________________________________________ Package Information ...

Page 11

Dual 4:2 Crosspoint Switch ______________________________________________________________________________________ 3.3V, 622Mbps LVDS, NOTES 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 © 2000 Maxim Integrated Products ...

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