MAX3891 Datasheet, PDF (1/12 Pages) Maxim Integrated Products – 16:1 Serializer, 3.3V, 2.5Gbps, SDH/SONET with Clock Synthesis and LVPECL Inputs

19-1963; Rev 0; 2/01
EVALUATION ^{KIT AVAILABLE}
16:1 Serializer, 3.3V, 2.5Gbps, SDH/SONET,
with Clock Synthesis and LVPECL Inputs
General Description
The MAX3891 serializer converts 16-bit wide, 155Mbps
parallel data to 2.5Gbps serial data in ATM and
SDH/SONET applications. The MAX3891 is ideal for inter-
facing with high-speed digital circuitry. This device
accepts single-ended LVPECL data inputs and delivers
differential LVPECL data and clock outputs. An internal
2.5Gbps serial clock, synthesized by a fully integrated
PLL that accepts multiple input reference clock rates,
retimes the output data stream. The MAX3891 operates
from a single +3.3V supply and accepts differential
LVPECL reference clock rates of 155.52MHz, 77.76MHz,
51.84MHz, or 38.88MHz. A CML loopback data output is
provided to facilitate system diagnostic testing. The
MAX3891 is available in the extended temperature range
(-40°C to +85°C) in a 64-pin TQFP exposed pad (EP)
package.
________________________Applications
2.5Gbps SDH/SONET Transmission Systems
2.5Gbps Access Nodes
Add/Drop Multiplexers
Digital Cross-Connects
ATM Backplanes
Features
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
Conversion
o Clock Synthesis for 2.5Gbps
o Multiple Clock Reference Frequencies
(155.52MHz, 77.76MHz, 51.84MHz, 38.88MHz)
o Additional High-Speed Output for System
Loopback Testing
o Single-Ended PECL Data Inputs
o Differential PECL Clock Inputs and Serial Data
Outputs
Ordering Information
PART
MAX3891ECB
*EP = Exposed Pad
TEMP. RANGE
-40°C to +85°C
PIN-PACKAGE
64 TQFP EP*
Pin Configuration
TOP VIEW
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49
GND 1
VCC 2
SLBO- 3
SLBO+ 4
VCC 5
SOS 6
VCC 7
SCLKO- 8
SCLKO+ 9
VCC 10
SDO- 11
SDO+ 12
VCC 13
VCC 14
PCLKI+ 15
PCLKI- 16
MAX3891
48 GND
47 VCC
46 PDI2
45 VCC
44 PDI3
43 VCC
42 PDI4
41 VCC
40 PDI5
39 VCC
38 PDI6
37 VCC
36 PDI7
35 VCC
34 PDI8
33 GND
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
TQFP
Typical Application Circuit appears at end of data sheet.
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