MAX9486 Datasheet, PDF (1/8 Pages) Maxim Integrated Products – 8kHz Reference Clock Synthesizer with Multiple Outputs at 35.328MHz

19-3345; Rev 0; 8/04
EVAALVUAAILTAIOBNLEKIT
8kHz Reference Clock Synthesizer
with Multiple Outputs at 35.328MHz
General Description
The MAX9486 low-cost, high-performance clock syn-
thesizer with an 8kHz input reference clock provides six
buffered LVTTL clock outputs at 35.328MHz. The clock
synthesizer can be used to generate the clocks for T1,
E1, T3, E3, and xDSL.
The MAX9486 has two phase-lock loops (PLLs). The
first PLL uses a voltage-controlled crystal oscillator
(VCXO). The second PLL is a frequency multiplier. With
the two PLLs, the MAX9486 generates the output fre-
quency at 35.328MHz. In addition, this device gener-
ates a jitter-suppressed 8kHz output that provides a
better source for the reference clock relay.
The MAX9486 is available in a 24-pin TSSOP package
and operates over the extended operating temperature
range of -40°C to +85°C and a single +3V to +3.6V
power-supply range.
Features
♦ 8kHz Input Reference CLK
♦ High-Jitter Rejection on the Reference CLK
♦ Synthesizer Locks to the 8kHz Reference with a
±200ppm Range
♦ Output Frequency: 35.328MHz
♦ Six Buffered LVTTL Low-Jitter Outputs
♦ One 8kHz Reference CLK Relay Output
♦ +3.3V Supply Operation
♦ 24-Pin TSSOP Package
Applications
Telecom Equipment Using T1, E1, T3, E3, and
ISDN Protocols
xDSL Equipment in CO with Interface to the
Telecom Protocols
PART
MAX9486EUG
Ordering Information
TEMP RANGE
-40°C to +85°C
PIN-PACKAGE
24 TSSOP
Pin Configuration
Typical Application Circuit
TOP VIEW
SHDN 1
REO 2
REIN 3
V_DDP 4
GNDP 5
X1 6
V_DD 7
X2 8
GND 9
LP2 10
LP1 11
SETI 12
MAX9486
TSSOP
24 CLK1
23 GND
22 CLK2
21 V_DD
20 CLK3
19 V_DD
18 GND
17 CLK4
16 V_DD
15 CLK5
14 GND
13 CLK6
R₁
C₁
C₂
LP1 LP2 X1
X2
V_DDP
V_DD
SETI
CLK1
CLK2
R_SET
MAX9486
CLK3
GNDP
CLK4
V_DD
CLK5
SHDN
CLK6
REIN
REO
GND
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