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840002I डेटा पत्रक PDF( Datasheet डाउनलोड )


डेटा पत्रक - Crystal-to-LVCMOS/LVTTL Frequency Synthesizer - IDT

भाग संख्या 840002I
समारोह Crystal-to-LVCMOS/LVTTL Frequency Synthesizer
मैन्युफैक्चरर्स IDT 
लोगो IDT लोगो 
पूर्व दर्शन
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840002I pdf
840002I DATA SHEET
TABLE 1. PIN DESCRIPTIONS
Number
Name
Type
Description
1,
16
F_SEL0, F_
SEL1
Input
Pullup Frequency select pins. LVCMOS/LVTTL interface levels.
Selects between the crystal or TEST_CLK inputs as the PLL reference
2 nXTAL_SEL Input Pulldown source. When HIGH, selects TEST_CLK. When LOW, selects XTAL
inputs. LVCMOS/LVTTL interface levels.
3
TEST_CLK
Input Pulldown Single-ended LVCMOS/LVTTL clock input.
4
OE
Input
Pullup
Output enable pin. When HIGH, the outputs are active. When LOW, the
outputs are in a high impedance state. LVCMOS/LVTTL interface levels.
Active HIGH Master Reset. When logic HIGH, the internal dividers are
5 MR Input Pulldown reset causing active outputs to go low. When logic LOW, the internal
dividers and the outputs are enabled. LVCMOS/LVTTL interface levels.
PLL Bypass. When LOW, the output is driven from the VCO output.
6
nPLL_SEL
Input
Pulldown
When HIGH, the PLL is bypassed and the output frequency = reference
clock frequency/n output divider.
LVCMOS/LVTTL interface levels.
7 V Power
DDA
8 VDD Power
9,
10
XTAL_OUT,
XTAL_IN
Input
Analog supply pin.
Core supply pin.
Crystal oscillator interface. XTAL_IN is the input.
XTAL_OUT is the output.
11
12, 13
V
DDO
Q1, Q0
Power
Output
Output supply pin.
Single-ended clock outputs. LVCMOS/LVTTL interface levels.
14, 15
GND
Power
Power supply ground.
NOTE: Pullup and Pulldown refer to internal input resistors. See Table 2, Pin Characteristics, for typical values.
TABLE 2. PIN CHARACTERISTICS
Symbol
CIN
CPD
RPULLUP
RPULLDOWN
Parameter
Input Capacitance
Power Dissipation Capacitance
Input Pullup Resistor
Input Pulldown Resistor
ROUT
Output Impedance
Test Conditions
3.3V±5%
2.5V±5%
Minimum
14
16
Typical
4
8
51
51
17
21
Maximum
21
25
Units
pF
pF
kΩ
kΩ
Ω
Ω
TABLE 3. FREQUENCY SELECT FUNCTION TABLE
Input Frequency
(MHz)
26.5625
26.5625
26.5625
26.5625
26.04166
F_SEL1
0
0
1
1
0
F_SEL0
0
1
0
1
1
Inputs
M Divider Value N Divider Value
24 3
24 4
24 6
24 12
24 4
M/N Divider Value
8
6
4
2
6
Output Frequency
(MHz)
212.5
159.375
106.25
53.125
156.25
FEMTOCLOCKS™ CRYSTAL-TOLVCMOS/
LVTTL FREQUENCY SYNTHESIZER
2
REVISION A 3/30/15

विन्यास 15 पेज
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अनुशंसा डेटापत्रक

भाग संख्याविवरणविनिर्माण
840002ICrystal-to-LVCMOS/LVTTL Frequency SynthesizerIDT
IDT


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