MAX3783 Datasheet, PDF (1/8 Pages) Maxim Integrated Products – 2.7Gbps Dual Mux/Buffer with Loopback

19-2197; Rev 2; 1/08
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2.7Gbps Dual Mux/Buffer with Loopback
General Description
The MAX3783 is a dual serial multiplexer (mux) and
buffer with selectable line-side loopback for system
interconnect and serial backplane applications up to
2.7Gbps. Each independent channel consists of a trans-
mitter with fanout of two and a receiver with a 2:1 input
mux. Selectable loopback paths support system testing.
Operating from a single 3.3V supply, this device has
current-mode logic (CML) inputs and outputs, which
can be AC-coupled for PECL compatibility, if desired.
The IC is packaged in a compact 48-pin TQFP-EP pack-
age with exposed pad. Typical power consumption is
1.12W.
Features
♦ Provides Redundant Serial I/O
♦ 11ps Deterministic Jitter
♦ Selectable Loopback
♦ On-Chip 50Ω Termination Resistors
♦ 3.3V Power Supply
♦ Two-Port Integration
Applications
2.7Gbps Serial Communications
System Interconnect
Serial Backplane
Fail-Over and Protection Switching
Ordering Information
PART
TEMP RANGE
MAX3783UCM
0°C to +85°C
MAX3783UCM+
0°C to +85°C
*EP = Exposed pad.
+ Denotes a lead-free package.
PIN-PACKAGE
48 TQFP-EP*
48 TQFP-EP*
Typical Application Circuit appears at end of data sheet.
Pin Configuration
GND 1
SIA- 2
SIA+ 3
V_CC 4
LB1A 5
LB2A 6
LB1B 7
LB2B 8
V_CC 9
SIB+ 10
SIB- 11
GND 12
MAX3783
36 LI2A+
35 LI2A-
34 V_CC
33 LI1A+
32 LI1A-
31 GND
30 GND
29 LI1B-
28 LI1B+
27 V_CC
26 LI2B-
25 LI2B+
TQFP-EP*
*EXPOSED PAD MUST BE SOLDERED TO SUPPLY GROUND ON THE CIRCUIT BOARD.
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.