MAX9205 Maxim, MAX9205 Datasheet

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MAX9205

Manufacturer Part Number
MAX9205
Description
The MAX9205/MAX9207 serializers transform 10-bit-wide parallel LVCMOS/LVTTL data into a serial high-speed bus low-voltage differential signaling (LVDS) data stream
Manufacturer
Maxim
Datasheet

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The MAX9205/MAX9207 serializers transform 10-bit-
wide parallel LVCMOS/LVTTL data into a serial high-
speed bus low-voltage differential signaling (LVDS)
data stream. The serializers typically pair with deserial-
izers like the MAX9206/MAX9208, which receive the
serial output and transform it back to 10-bit-wide paral-
lel data.
The MAX9205/MAX9207 transmit serial data at speeds
up to 400Mbps and 660Mbps, respectively, over PCB
traces or twisted-pair cables. Since the clock is recov-
ered from the serial data stream, clock-to-data and
data-to-data skew that would be present with a parallel
bus are eliminated.
The serializers require no external components and few
control signals. The input data strobe edge is selected
by TCLK_R/F. PWRDN is used to save power when the
devices are not in use. Upon power-up, a synchroniza-
tion mode is activated, which is controlled by two SYNC
inputs, SYNC1 and SYNC2.
The MAX9205 can lock to a 16MHz to 40MHz system
clock, while the MAX9207 can lock to a 40MHz to
66MHz system clock. The serializer output is held in
high impedance until the device is fully locked to the
local system clock, or when the device is in power-
down mode.
Both the devices operate from a single +3.3V supply,
are specified for operation from -40°C to +85°C, and
are available in 28-pin SSOP packages.
19-2029; Rev 1; 11/10
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.
Cellular Phone Base
Stations
Add Drop Muxes
Digital Cross-Connects
TCLK_R/F
SYNC 1
SYNC 2
TCLK
IN_
10
________________________________________________________________ Maxim Integrated Products
PLL
General Description
TIMING AND
CONTROL
DSLAMs
Network Switches and
Routers
Backplane Interconnect
Applications
MAX9205
MAX9207
OUT+
OUT-
100Ω
EN
PWRDN
10-Bit Bus LVDS Serializers
TWISTED PAIR
PCB OR
LVDS
BUS
o Standalone Serializer (vs. SERDES) Ideal for
o Framing Bits for Deserializer Resync Allow Hot
o LVDS Serial Output Rated for Point-to-Point and
o Wide Reference Clock Input Range
o Low 140ps (pk-pk) Deterministic Jitter (MAX9207)
o Low 34mA Supply Current (MAX9205)
o 10-Bit Parallel LVCMOS/LVTTL Interface
o Up to 660Mbps Payload Data Rate (MAX9207)
o Programmable Active Edge on Input Latch
o Pin-Compatible Upgrades to DS92LV1021 and
+ Denotes a lead(Pb)-free/RoHS-compliant package.
/V denotes an automotive qualified part.
Pin Configuration and Functional Diagram appear at end of
data sheet.
MAX9205EAI+
M AX 9205E AI/V + -40°C to +85°C 28 SSOP
MAX9207EAI+
Unidirectional Links
Insertion Without System Interruption
Bus Applications
DS92LV1023
100Ω
PART
16MHz to 40MHz (MAX9205)
40MHz to 66MHz (MAX9207)
IN+
IN-
MAX9206
MAX9208
Typical Application Circuit
-40°C to +85°C 28 SSOP
-40°C to +85°C 28 SSOP
RANGE
PLL
TEMP
Ordering Information
RECOVERY
CLOCK
TIMING AND
CONTROL
PIN-
PACKAGE
10
Features
OUT_
REFCLK
EN
LOCK
RCLK
RCLK_R/F
REF CLOCK
RANGE
16 to 40
16 to 40
40 to 66
(MHz)
1

Related parts for MAX9205

MAX9205 Summary of contents

Page 1

... Upon power-up, a synchroniza- tion mode is activated, which is controlled by two SYNC inputs, SYNC1 and SYNC2. The MAX9205 can lock to a 16MHz to 40MHz system clock, while the MAX9207 can lock to a 40MHz to 66MHz system clock. The serializer output is held in ...

Page 2

... IN0 to IN9 = PWRDN = EN = high 0.8V, PWRDN OUT+ OUT- _VCC 0V 3.6V OX _VCC OUT+ OUT- MAX9205 R = 27_ or 50_ L I worst-case pattern CC (Figures 2, 4) MAX9207 PWRDN = low I CCX = -40°C to +85°C. Typical values are MIN TYP MAX 2 GND 0.8 -20 ...

Page 3

... Low-State Delay SYNC Pulse Width t PLL Lock Time Bus LVDS Bit Width Serializer Delay _______________________________________________________________________________________ 10-Bit Bus LVDS Serializers = 27Ω ±1% or 50Ω ±1 10pF CONDITIONS MAX9205 TCCF MAX9207 MAX9205 t TCP MAX9207 Figure 3 CLKT t JIT Figure 4 LHT ...

Page 4

... Typical Operating Characteristics = 10pF +25°C, unless otherwise noted.) A 3.6 = -40°C to +85°C. Typical values are MIN TYP MAX 200 140 140 140 WORST-CASE PATTERN SUPPLY CURRENT vs. SUPPLY VOLTAGE TCLK = 40MHz MAX9205 10 3.0 3.3 3.6 SUPPLY VOLTAGE (V) = AVCC UNITS ps (pk-pk) ps (RMS) ...

Page 5

... LVCMOS/LVTTL Logic Input. High selects a TCLK rising-edge data strobe. Low selects a TCLK 13 TCLK_R/F falling-edge data strobe. LVCMOS/LVTTL Reference Clock Input. The MAX9205 accepts a 16MHz to 40MHz clock. The MAX9207 accepts a 40MHz to 66MHz clock. TCLK provides a frequency reference to the PLL and 14 TCLK strobes parallel data into the input latch. ...

Page 6

... When the supply voltage reaches 2.35V, the PLL starts to lock to a local refer- ence clock (16MHz to 40MHz for MAX9205 and 40MHz to 66MHz for MAX9207). The reference clock, TCLK, is provided by the system. A serializer locks within 2049 cycles of TCLK ...

Page 7

... Termination with a single resistor at the end of a point- to-point link typically provides acceptable performance. However, the MAX9205/MAX9207 output levels are specified for double-terminated point-to-point and mul- tipoint applications. With a single 100Ω termination, the output swing is larger. ...

Page 8

Bus LVDS Serializers OUT+ OUT- Figure 4. Output Load and Transition Times TCLK IN_ TIMING SHOWN FOR TCLK_R/F = LOW Figure 5. Data Input Setup and Hold Times OUT± Figure 6. High-Impedance ...

Page 9

PWRDN TCLK OUT± HIGH IMPEDANCE SYNC 1 = SYNC 2 = LOW EN = HIGH TCLK_R/F = HIGH Figure 7. PLL Lock Time and PWRDN High-Impedance Delays IN IN0 - IN9 SYMBOL TCLK 1.5V OUT± TCLK_ ...

Page 10

... The double termination typically PARALLEL DATA IN MAX9205 MAX9207 Figure 11. Double-Terminated Point-to-Point ASIC ASIC MAX9205 MAX9207 Figure 12. Multidrop 10 ______________________________________________________________________________________ Topologies reduces reflections compared to a single 100Ω termi- nation. A single 100Ω termination at the deserializer input is feasible and will make the differential signal swing larger ...

Page 11

... Multiple serializers and deserializers bused over a dif- ferential serial connection on a backplane are shown in Figure 14. The second serializer can be a backup to ASIC MAX9205 MAX9207 MAX9150 REPEATER 100Ω 100Ω ...

Page 12

... RoHS status. PACKAGE TYPE 28 SSOP ASIC ASIC MAX9206 MAX9208 Functional Diagram OUT+ 10 IN_ OUT- TCLK_R/F TCLK EN TIMING AND PLL CONTROL PWRDN SYNC 1 SYNC 2 MAX9205 MAX9207 Package Information PACKAGE OUTLINE CODE NO. PATTERN NO. A28+4 21-0056 MAX9206 MAX9208 54Ω LAND 90-0095 ...

Page 13

... Updated Ordering Information, Absolute Maximum Ratings, and Package Information 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. ...

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