MAX9205_10 Datasheet, PDF (1/13 Pages) Maxim Integrated Products – 10-Bit Bus LVDS Serializers

19-2029; Rev 1; 11/10
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10-Bit Bus LVDS Serializers
General 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. 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.
Applications
Cellular Phone Base
Stations
Add Drop Muxes
Digital Cross-Connects
DSLAMs
Network Switches and
Routers
Backplane Interconnect
Features
o Standalone Serializer (vs. SERDES) Ideal for
Unidirectional Links
o Framing Bits for Deserializer Resync Allow Hot
Insertion Without System Interruption
o LVDS Serial Output Rated for Point-to-Point and
Bus Applications
o Wide Reference Clock Input Range
16MHz to 40MHz (MAX9205)
40MHz to 66MHz (MAX9207)
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
DS92LV1023
Ordering Information
PART
TEMP
RANGE
PIN-
PACKAGE
REF CLOCK
RANGE
(MHz)
MAX9205EAI+ -40°C to +85°C 28 SSOP
16 to 40
MAX9205EAI/V+ -40°C to +85°C 28 SSOP
16 to 40
MAX9207EAI+ -40°C to +85°C 28 SSOP
40 to 66
+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.
Typical Application Circuit
10
IN_
TCLK_R/F
TCLK
SYNC 1
SYNC 2
BUS
OUT+
LVDS
IN+
100Ω
100Ω
10
OUT_
OUT-
IN-
PLL
TIMING AND
CONTROL
PCB OR
TWISTED PAIR
EN
PWRDN
PLL
TIMING AND
CONTROL
REFCLK
EN
LOCK
MAX9205
MAX9207
MAX9206
MAX9208
CLOCK
RECOVERY
RCLK
RCLK_R/F
________________________________________________________________ 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.