Maxim MAX3691ECJ Datasheet
_______________General Description
The MAX3691 serializer is ideal for converting 4-bitwide, 155Mbps parallel data to 622Mbps 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 delivers a 3.3V PECL serial-data output. A fully integrated
PLL synthesizes an internal 622Mbps serial clock from
a 155.52MHz reference clock.
The MAX3691 is available in the extended-industrial
temperature range (-40°C to +85°C), in a 32-pin TQFP
package.
________________________Applications
622Mbps SDH/SONET Transmission Systems
622Mbps ATM/SONET Access Nodes
Add/Drop Multiplexers
Digital Cross Connects
____________________________Features
♦ Single +3.3V Supply
♦ 155Mbps Parallel to 622Mbps Serial Conversion
♦ 215mW Power
♦ LVDS Parallel Clock and Data Inputs
♦ Differential 3.3V PECL Serial-Data Output
MAX3691
+3.3V, 622Mbps, SDH/SONET 4:1 Serializer
with Clock Synthesis and LVDS Inputs
________________________________________________________________
Maxim Integrated Products
1
MAX3691
MAX3667
SD-PCLKO- PCLKO+
LVDS CRYSTAL REFERENCE
PCLKI- PCLKI+ RCLK-
0.1µF
0.1µF
V
CC
GND
SD+
FIL-
FIL+
130Ω 130Ω
82Ω
1.5k
100pF
24.9k
82Ω
V
CC
= +3.3V
V
CC
= +3.3V
V
CC
= +3.3V
OVERHEAD
GENERATION
PD3-
PD3+
PD2-
PD2+
PD1-
PD1+
PD0-
PD0+
THIS SYMBOL REPRESENTS A TRANSMISSION LINE
OF CHARACTERISTIC IMPEDANCE (Z
0
= 50Ω)
RCLK+
___________________________________________________Typical Operating Circuit
19-1207; Rev 0; 3/97
PART
MAX3691ECJ -40°C to +85°C
TEMP. RANGE PIN-PACKAGE
32 TQFP
______________Ordering Information
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800
Pin Configuration appears at end of data sheet.
EVALUATION KIT
AVAILABLE
MAX3691
+3.3V, 622Mbps, SDH/SONET 4:1 Serializer
with Clock Synthesis and LVDS Inputs
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
DC ELECTRICAL CHARACTERISTICS
(VCC= +3.0V to +3.6V, differential LVDS loads = 100Ω ±1%, PECL loads = 50Ω ±1% to (V
CC
- 2V), TA= -40°C to +85°C, unless
otherwise noted. Typical values are at V
CC
= +3.3V, TA= +25°C.)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
Terminal Voltage (with respect to GND)
V
CC
.........................................................................-0.5V to 5V
All Inputs.................................................-0.5V to (V
CC
+ 0.5V)
Output Current
LVDS Outputs (PCLKO±)................................................10mA
PECL Outputs (SD±).......................................................50mA
Continuous Power Dissipation (T
A
= +85°C)
TQFP (derate 10.20mW/°C above +85°C)...................663mW
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range.............................-65°C to +160°C
Lead Temperature (soldering, 10sec).............................+300°C
T
A
= +25°C to +85°C
PECL outputs unterminated
TA= +25°C to +85°C
Differential input voltage =
100mV
Common-mode voltage =
50mV
CONDITIONS
V
VCC- 1.03 VCC- 0.88
V
OH
Output High Voltage
mA38 65 100I
CC
Supply Current
V0.925V
OL
Output Low Voltage
V1.475V
OH
Output High Voltage
Ω
85 100 115R
IN
Differential Input Resistance
mV70V
HYST
Threshold Hysteresis
V
VCC- 1.81 VCC- 1.62
V
OL
Output Low Voltage
V0 2.4V
I
Input Voltage Range
mV-100 100V
IDTH
Differential Input Threshold
UNITSMIN TYP MAXSYMBOLPARAMETER
%±1 ±10
∆R
O
Change in Magnitude of Single-Ended Output
Resistance for Complementary States
Ω
40 70 140R
O
Single-Ended Output Resistance
mV25
∆V
OS
Change in Magnitude of Output Offset Voltage
for Complementary States
mV250 400V
OD
Differential Output Voltage
mV25
∆V
OD
Change in Magnitude of Differential Output
Voltage for Complementary States
TA= +25°C V1.125 1.275V
OS
Output Offset Voltage
PECL OUTPUTS (SD±)
LVDS INPUTS AND OUTPUTS (PCLKI±, RCLK±, PCLKO±, PD_±)
TA= -40°C VCC- 1.08 VCC- 0.88
TA= -40°C VCC- 1.95 VCC- 1.62
MAX3691
+3.3V, 622Mbps, SDH/SONET 4:1 Serializer
with Clock Synthesis and LVDS Inputs
_______________________________________________________________________________________ 3
Note 1: AC characteristics guaranteed by design and characterization.
Note 2: Assumes a 50% duty cycle ±5%.
TA= -40°C to +85°C (Note 2)
CONDITIONS
ps600t
H
Parallel Data-Hold Time
ps200t
SU
MHz622.08f
SCLK
Serial Clock Rate
Parallel Data-Setup Time
ns-0.7 +3.3t
SKEW
PCLKO to PCLKI Skew
ps
RMS
13
Φ
0
Output Jitter
ps400t
R, tF
PECL Differential Output
Rise/Fall Time
UNITSMIN TYP MAXSYMBOLPARAMETER
AC ELECTRICAL CHARACTERISTICS
(VCC= +3.0V to +3.6V, differential LVDS load = 100Ω ±1%, PECL loads = 50Ω ±1% to (V
CC
- 2V) TA= +25°C, unless otherwise
noted. Typical values are at V
CC
= +3.3V.) (Note 1)
100
0
-50 -25 25 100
SUPPLY CURRENT
vs. TEMPERATURE
20
60
80
MAX3691-01
TEMPERATURE (°C)
SUPPLY CURRENT (mA)
0 504075
-20
-120
-50 -25 25 100
PARALLEL DATA-SETUP TIME
vs. TEMPERATURE
-100
-60
-40
MAX3691-02
TEMPERATURE (°C)
PARALLEL DATA-SETUP TIME (ps)
0 50
-80
75
250
150
-50 -25 25 100
PARALLEL DATA-HOLD TIME
vs. TEMPERATURE
170
210
230
MAX3691-03
TEMPERATURE (°C)
PARALLEL DATA-HOLD TIME (ps)
0 50
190
75
__________________________________________Typical Operating Characteristics
(V
CC
= +3.0V to +3.6V, differential LVDS loads = 100Ω, unless otherwise noted.)
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