IDT ICS83904AG

ICS83904-02
LOW SKEW, 1-TO-4, CRYSTAL-TOLVCMOS/LVTTL FANOUT BUFFER
GENERAL DESCRIPTION
FEATURES
The ICS83904-02 is a low skew, high perforICS
mance 1-to-4 Crystal Oscillator/Crystal-to-LVCMOS
HiPerClockS™ Fanout Buffer and a member of the HiPerClockS™
family of High Performance Clock Solutions from IDT.
The ICS83904-02 has selectable single-ended clock
or two crystal-oscillator inputs. There is an output enable to
disable the outputs by placing them into a high-impedance state.
• Four LVCMOS/LVTTL outputs,
19Ω typical output impedance @ VDD = VDDO = 3.3V
• Two Crystal oscillator input pairs
One LVCMOS/LVTTL clock input
• Crystal input frequencry range: 12MHz – 38.88MHz
• Output frequency: 200MHz (maximum)
• Output Skew: 40ps (maximum) @ VDD = VDDO = 3.3V
Guaranteed output and par t-to-par t skew characteristics
make the ICS83904-02 ideal for those applications demanding well defined performance and repeatability.
• RMS phase jitter @ 25MHz output, using a 25MHz crystal
(100Hz – 1MHz): 0.16ps (typical) @ VDD = VDDO = 3.3V
• RMS phase noise at 25MHz:
Offset
Noise Power
100Hz ............. -118.4 dBc/Hz
1kHz ............. -141.5 dBc/Hz
10kHz ............. -157.2 dBc/Hz
100kHz ............. -157.2 dBc/Hz
• Supply Voltage Modes:
(Core/Output)
3.3V/3.3V
3.3V/2.5V
3.3V/1.8V
2.5V/2.5V
2.5V/1.8V
• 0°C to 70°C ambient operating temperature
BLOCK DIAGRAM
OE
CLK_SEL0
• Available in both standard (RoHS 5) and lead-free (RoHS 6)
packages
Pullup
Pulldown
CLK_SEL1 Pulldown
PIN ASSIGNMENT
XTAL_IN0
OSC
0 0
Q0
XTAL_OUT0
Q1
XTAL_IN1
OSC
0 1
Q2
XTAL_OUT1
CLK
Pulldown
1 0
1 1
IDT ™ / ICS™ LVCMOS/LVTTL FANOUT BUFFER
Q3
1
CLK_SEL0
XTAL_OUT0
XTAL_IN0
VDD
XTAL_IN1
XTAL_OUT1
CLK_SEL1
CLK
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
VDDO
Q0
Q1
GND
Q2
Q3
VDDO
OE
ICS83904-02
16-Lead TSSOP
4.4mm x 5.0mm x 0.92mm
package body
G Package
Top View
ICS83904AG-02 REV. A SEPTEMBER 12, 2007
ICS83904-02
LOW SKEW, 1-TO-4, CRYSTAL-TO-LVCMOS/LVTTL FANOUT BUFFER
TABLE 1. PIN DESCRIPTIONS
Number
8
Name
CLK_SEL0,
CLK_SEL1
XTAL_OUT0,
XTAL_IN0
VDD
XTAL_IN1,
XTAL_OUT1
CLK
9
OE
1, 7
2, 3
4
5, 6
Type
Input
Input
Power
Input
Input
Input
Description
Clock select inputs. See Table 3, Input Reference Function Table.
Pulldown
LVCMOS / LVTTL interface levels.
Cr ystal oscillator interface. XTAL_IN0 is the input.
XTAL_OUT0 is the output.
Positive supply pin.
Cr ystal oscillator interface. XTAL_IN1 is the input.
XTAL_OUT1 is the output.
Pulldown Single-ended clock input. LVCMOS/LVTTL interface levels.
Output enable. When LOW, outputs are in HIGH impedance state.
Pullup
When HIGH, outputs are active. LVCMOS / LVTTL interface levels.
Output supply pins.
10, 16
VDDO
Power
11, 12, 14, 15
Q3, Q2, Q1, Q0
Output
Single-ended clock outputs. LVCMOS/LVTTL interface levels.
13
GN D
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
Parameter
Test Conditions
Minimum
Typical
Maximum
Units
CIN
Input Capacitance
4
pF
RPULLUP
Input Pullup Resistor
51
kΩ
RPULLDOWN
Input Pulldown Resistor
51
kΩ
8
pF
Power Dissipation Capacitance
(per output)
VDDO = 3.465V
CPD
VDDO = 2.625V
7
pF
VDDO = 2.0V
7
pF
VDDO = 3.3V
19
Ω
VDDO = 2.5V
21
Ω
VDDO = 1.8V
32
Ω
Output Impedance
ROUT
TABLE 3. INPUT REFERENCE FUNCTION TABLE
Control Inputs
CLK_SEL1
CLK_SEL0
0
0
Reference
XTAL0 (default)
0
1
XTAL1
1
0
CLK
1
1
CLK
IDT ™ / ICS™ LVCMOS/LVTTL FANOUT BUFFER
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ICS83904AG-02 REV. A SEPTEMBER 12, 2007
ICS83904-02
LOW SKEW, 1-TO-4, CRYSTAL-TO-LVCMOS/LVTTL FANOUT BUFFER
ABSOLUTE MAXIMUM RATINGS
Supply Voltage, VDD
NOTE: Stresses beyond those listed under Absolute
Maximum Ratings may cause permanent damage to the
device. These ratings are stress specifications only. Functional operation of product at these conditions or any conditions beyond
those listed in the DC Characteristics or AC Characteristics is not
implied. Exposure to absolute maximum rating conditions for extended periods may affect product reliability.
4.6V
Inputs, VI
-0.5V to VDD + 0.5 V
Outputs, VO
-0.5V to VDDO + 0.5V
Package Thermal Impedance, θJA 100.3°C/W (0 mps)
Storage Temperature, TSTG
-65°C to 150°C
TABLE 4A. POWER SUPPLY DC CHARACTERISTICS, VDD = VDDO = 3.3V±5%, TA = 0°C TO 70°C
Symbol
Parameter
VDD
Power Supply Voltage
VDDO
Output Supply Voltage
IDD
Power Supply Current
IDDO
Output Supply Current
Test Conditions
Minimum
Typical
Maximum
Units
3.135
3.3
3.465
V
3.135
3. 3
3.465
V
No Load & XTALx selected @ 12MHz
7
mA
No Load & CLK selected
1
mA
No Load & CLK selected
1
mA
TABLE 4B. POWER SUPPLY DC CHARACTERISTICS, VDD = 3.3V±5%, VDDO = 2.5V±5%, TA = 0°C TO 70°C
Symbol
Parameter
VDD
Power Supply Voltage
VDDO
Output Supply Voltage
I DD
Power Supply Current
IDDO
Output Supply Current
Test Conditions
Minimum
Typical
Maximum
Units
3.135
3. 3
3.465
V
2.375
2. 5
2.625
V
No Load & XTALx selected @ 12MHz
7
mA
No Load & CLK selected
1
mA
No Load & CLK selected
1
mA
TABLE 4C. POWER SUPPLY DC CHARACTERISTICS, VDD = 3.3V±5%, VDDO = 1.8V±0.2V, TA = 0°C TO 70°C
Symbol
Parameter
V DD
VDDO
IDD
Power Supply Current
IDDO
Output Supply Current
Test Conditions
Minimum
Typical
Maximum
Units
Power Supply Voltage
3.135
3. 3
3.465
V
Output Supply Voltage
1.6
1.8
2.0
V
No Load & XTALx selected @ 12MHz
7
mA
No Load & CLK selected
1
mA
No Load & CLK selected
1
mA
TABLE 4D. POWER SUPPLY DC CHARACTERISTICS, VDD = VDDO = 2.5V±5%, TA = 0°C TO 70°C
Symbol
Parameter
V DD
VDDO
I DD
Power Supply Current
IDDO
Output Supply Current
Test Conditions
Minimum
Typical
Maximum
Units
Power Supply Voltage
2.375
2.5
2.625
V
Output Supply Voltage
2.375
2.5
2.625
V
No Load & XTALx selected @ 12MHz
3
mA
No Load & CLK selected
1
mA
No Load & CLK selected
1
mA
IDT ™ / ICS™ LVCMOS/LVTTL FANOUT BUFFER
3
ICS83904AG-02 REV. A SEPTEMBER 12, 2007
ICS83904-02
LOW SKEW, 1-TO-4, CRYSTAL-TO-LVCMOS/LVTTL FANOUT BUFFER
TABLE 4E. POWER SUPPLY DC CHARACTERISTICS, VDD = 2.5V±5%, VDDO = 1.8V±0.2V, TA = 0°C TO 70°C
Symbol
Parameter
Test Conditions
VDD
Power Supply Voltage
VDDO
Output Supply Voltage
IDD
Power Supply Current
IDDO
Output Supply Current
Minimum
Typical
Maximum
Units
2.375
2. 5
2.625
V
1.6
1.8
2.0
V
No Load & XTALx selected @ 12MHz
3
mA
No Load & CLK selected
1
mA
No Load & CLK selected
1
mA
TABLE 4F. DC CHARACTERISTICS, TA = 0°C TO 70°C
Symbol
Parameter
VIH
Input High Voltage
VIL
Input Low Voltage
IIH
Input High Current
IIL
Input Low Current
VOH
CLK,
CLK_SEL0:1
OE
CLK,
CLK_SEL0:1
OE
Output HighVoltage
Test Conditions
Minimum
Maximum
Units
VDD = 3.3V ± 5%
2.2
Typical
VDD + 0.3
V
VDD = 2.5V ± 5%
1.6
VDD + 0.3
V
VDD = 3.3V ± 5%
-0.3
1.3
V
VDD = 2.5V ± 5%
-0.3
0.9
V
VDD = 3.3V or 2.5V ± 5%
150
µA
VDD = 3.3V or 2.5V ± 5%
5
µA
VDD = 3.3V or 2.5V ± 5%
-5
µA
VDD = 3.3V or 2.5V ± 5%
-150
µA
VDDO = 3.3V ± 5%; NOTE 1
2.6
V
VDDO = 2.5V ± 5%; NOTE 1
1.8
V
VDDO = 1.8V ± 0.2V; NOTE 1
1.2
V
VDDO = 3.3V ± 5%; NOTE 1
VOL
Output Low Voltage
0.6
V
VDDO = 2.5V ± 5%; NOTE 1
0.5
V
VDDO = 1.8V ± 0.2V; NOTE 1
0. 4
V
NOTE 1: Outputs terminated with 50Ω to VDDO/2. See Parameter Measurement section, "Load Test Circuit" diagrams.
TABLE 5. CRYSTAL CHARACTERISTICS
Parameter
Test Conditions
Minimum
Mode of Oscillation
Typical Maximum
Units
Fundamental
Frequency
12
38.88
MHz
Equivalent Series Resistance (ESR)
50
Ω
Shunt Capacitance
7
pF
Drive Level
1
mW
IDT ™ / ICS™ LVCMOS/LVTTL FANOUT BUFFER
4
ICS83904AG-02 REV. A SEPTEMBER 12, 2007
ICS83904-02
LOW SKEW, 1-TO-4, CRYSTAL-TO-LVCMOS/LVTTL FANOUT BUFFER
TABLE 6A. AC CHARACTERISTICS, VDD = VDDO = 3.3V ± 5%, TA = 0°C TO 70°C
Symbol Parameter
fMAX
tpLH
t sk(o)
t sk(pp)
t jit(Ø)
t R / tF
Output Frequency
Test Conditions
w/external XTAL
1.4
25MHz, Integration Range:
100Hz – 1MHz
20% to 80%
w/external XTAL
odc
Output
Duty Cycle
tEN
Output Enable Time; NOTE 5
w/external CLK
Typical
Maximum
Units
38.88
MHz
200
MHz
2.4
ns
12
w/external CLK
Propagation Delay, Low-to-High;
NOTE 1
Output Skew; NOTE 2
Par t-to-Par t Skew; NOTE 2, 3
RMS Phase Jitter, Random;
NOTE 2, 4
Output Rise/Fall Time
Minimum
ƒ < 150MHz
1.9
40
ps
700
ps
0.16
ps
100
800
ps
45
55
%
46
54
%
10
ns
10
ns
Maximum
Units
38.88
MHz
200
MHz
2.5
ns
Output Disable Time; NOTE 5
tDIS
NOTE 1: Measured from VDD/2 of the input to VDDO/2 of the output.
NOTE 2: This parameter is defined in accordance with JEDEC Standard 65.
NOTE 3: Defined as skew between outputs on different devices operating a the same supply voltages and
with equal load conditions. Using the same type of input on each device, the output is measured at VDDO/2.
NOTE 4: Phase jitter is dependent on the input source used.
NOTE 5: These parameters are guaranteed by characterization. Not tested in production.
TABLE 6B. AC CHARACTERISTICS, VDD = 3.3V ± 5%, VDDO = 2.5V ± 5%, TA = 0°C TO 70°C
Symbol Parameter
fMAX
tpLH
t sk(o)
t sk(pp)
t jit(Ø)
t R / tF
Output Frequency
Test Conditions
w/external XTAL
1.5
25MHz, Integration Range:
100Hz - 1MHz
20% to 80%
w/external XTAL
odc
Output
Duty Cycle
tEN
Output Enable Time; NOTE 5
w/external CLK
Typical
12
w/external CLK
Propagation Delay, Low-to-High;
NOTE 1
Output Skew; NOTE 2
Par t-to-Par t Skew; NOTE 2, 3
RMS Phase Jitter, Random;
NOTE 2, 4
Output Rise/Fall Time
Minimum
ƒ < 150MHz
2.0
5
ps
ps
0.16
ps
100
800
ps
45
55
%
46
54
%
10
ns
10
ns
Output Disable Time; NOTE 5
tDIS
NOTE 1: Measured from VDD/2 of the input to VDDO/2 of the output.
NOTE 2: This parameter is defined in accordance with JEDEC Standard 65.
NOTE 3: Defined as skew between outputs on different devices operating a the same supply voltages and
with equal load conditions. Using the same type of input on each device, the output is measured at VDDO/2.
NOTE 4: Phase jitter is dependent on the input source used.
NOTE 5: These parameters are guaranteed by characterization. Not tested in production.
IDT ™ / ICS™ LVCMOS/LVTTL FANOUT BUFFER
40
700
ICS83904AG-02 REV. A SEPTEMBER 12, 2007
ICS83904-02
LOW SKEW, 1-TO-4, CRYSTAL-TO-LVCMOS/LVTTL FANOUT BUFFER
TABLE 6C. AC CHARACTERISTICS, VDD = 3.3V ± 5%, VDDO = 1.8V±0.2V, TA = 0°C TO 70°C
Symbol Parameter
fMAX
tpLH
t sk(o)
t sk(pp)
t jit(Ø)
t R / tF
Output Frequency
Test Conditions
w/external XTAL
1.7
25MHz, Integration Range:
100Hz - 1MHz
20% to 80%
w/external XTAL
odc
Output
Duty Cycle
tEN
Output Enable Time; NOTE 5
w/external CLK
Typical
Maximum
Units
38.88
MHz
200
MHz
2.7
ns
40
ps
700
ps
12
w/external CLK
Propagation Delay, Low-to-High;
NOTE 1
Output Skew; NOTE 2
Par t-to-Par t Skew; NOTE 2, 3
RMS Phase Jitter, Random;
NOTE 2, 4
Output Rise/Fall Time
Minimum
ƒ < 150MHz
2.2
0.16
ps
100
1000
ps
45
55
%
46
54
%
10
ns
10
ns
Maximum
Units
Output Disable Time; NOTE 5
tDIS
NOTE 1: Measured from VDD/2 of the input to VDDO/2 of the output.
NOTE 2: This parameter is defined in accordance with JEDEC Standard 65.
NOTE 3: Defined as skew between outputs on different devices operating a the same supply voltages and
with equal load conditions. Using the same type of input on each device, the output is measured at VDDO/2.
NOTE 4: Phase jitter is dependent on the input source used.
NOTE 5: These parameters are guaranteed by characterization. Not tested in production.
TABLE 6D. AC CHARACTERISTICS, VDD = VDDO = 2.5V ± 5%, TA = 0°C TO 70°C
Symbol Parameter
fMAX
tpLH
t sk(o)
t sk(pp)
t jit(Ø)
t R / tF
Output Frequency
Test Conditions
w/external XTAL
1.5
Output
Duty Cycle
tEN
Output Enable Time; NOTE 5
w/external CLK
2.2
MHz
200
MHz
3.0
ns
40
ps
700
ps
100
800
45
55
%
ƒ < 150MHz
48
52
%
10
ns
10
ns
0.20
Output Disable Time; NOTE 5
tDIS
NOTE 1: Measured from VDD/2 of the input to VDDO/2 of the output.
NOTE 2: This parameter is defined in accordance with JEDEC Standard 65.
NOTE 3: Defined as skew between outputs on different devices operating a the same supply voltages and
with equal load conditions. Using the same type of input on each device, the output is measured at VDDO/2.
NOTE 4: Phase jitter is dependent on the input source used.
NOTE 5: These parameters are guaranteed by characterization. Not tested in production.
IDT ™ / ICS™ LVCMOS/LVTTL FANOUT BUFFER
38.88
25MHz, Integration Range:
100Hz - 1MHz
20% to 80%
w/external XTAL
odc
Typical
12
w/external CLK
Propagation Delay, Low-to-High;
NOTE 1
Output Skew; NOTE 2
Par t-to-Par t Skew; NOTE 2, 3
RMS Phase Jitter, Random;
NOTE 2, 4
Output Rise/Fall Time
Minimum
6
ps
ps
ICS83904AG-02 REV. A SEPTEMBER 12, 2007
ICS83904-02
LOW SKEW, 1-TO-4, CRYSTAL-TO-LVCMOS/LVTTL FANOUT BUFFER
TABLE 6E. AC CHARACTERISTICS, VDD = 2.5V ± 5%, VDDO = 1.8V±0.2V, TA = 0°C TO 70°C
Symbol Parameter
fMAX
tpLH
t sk(o)
t sk(pp)
t jit(Ø)
t R / tF
Output Frequency
Test Conditions
w/external XTAL
1.7
25MHz, Integration Range:
100Hz - 1MHz
20% to 80%
w/external XTAL
odc
Output
Duty Cycle
tEN
Output Enable Time; NOTE 5
w/external CLK
Typical
Maximum
Units
38.88
MHz
200
MHz
3.3
ns
40
ps
700
ps
12
w/external CLK
Propagation Delay, Low-to-High;
NOTE 1
Output Skew; NOTE 2
Par t-to-Par t Skew; NOTE 2, 3
RMS Phase Jitter, Random;
NOTE 2, 4
Output Rise/Fall Time
Minimum
ƒ < 150MHz
2.5
0.19
100
1000
ps
45
55
%
46
54
%
Output Disable Time; NOTE 5
tDIS
NOTE 1: Measured from VDD/2 of the input to VDDO/2 of the output.
NOTE 2: This parameter is defined in accordance with JEDEC Standard 65.
NOTE 3: Defined as skew between outputs on different devices operating a the same supply voltages and
with equal load conditions. Using the same type of input on each device, the output is measured at VDDO/2.
NOTE 4: Phase jitter is dependent on the input source used.
NOTE 5: These parameters are guaranteed by characterization. Not tested in production.
IDT ™ / ICS™ LVCMOS/LVTTL FANOUT BUFFER
7
ps
10
ns
10
ns
ICS83904AG-02 REV. A SEPTEMBER 12, 2007
ICS83904-02
LOW SKEW, 1-TO-4, CRYSTAL-TO-LVCMOS/LVTTL FANOUT BUFFER
25MHz
RMS Phase Jitter (Random)
100Hz to 1MHz = 0.16ps (typical)
Raw Phase Noise Data
➤
NOISE POWER dBc
Hz
TYPICAL PHASE NOISE AT 25MHZ
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
-110
-120
-130
-140
-150
-160
-170
-180
-190
100
1k
10k
100k
1M
OFFSET FREQUENCY (HZ)
IDT ™ / ICS™ LVCMOS/LVTTL FANOUT BUFFER
8
ICS83904AG-02 REV. A SEPTEMBER 12, 2007
ICS83904-02
LOW SKEW, 1-TO-4, CRYSTAL-TO-LVCMOS/LVTTL FANOUT BUFFER
PARAMETER MEASUREMENT INFORMATION
1.65V±5%
1.25V±5%
SCOPE
VDD,
VDDO
SCOPE
VDD,
VDDO
Qx
Qx
LVCMOS
LVCMOS
GND
GND
-1.65V±5%
-1.25V±5%
3.3V CORE/3.3V OUTPUT LOAD AC TEST CIRCUIT
2.5V CORE/2.5V OUTPUT LOAD AC TEST CIRCUIT
2.4V±0.065V
2.05V±5%
1.25V±5%
0.9V±0.1V
SCOPE
VDD
VDDO
SCOPE
VDD
VDDO
Qx
GND
Qx
GND
LVCMOS
LVCMOS
-1.25V±5%
-0.9V±0.1V
3.3V CORE/2.5V OUTPUT LOAD AC TEST CIRCUIT
3.3V CORE/1.8V OUTPUT LOAD AC TEST CIRCUIT
1.6V±0.025V
0.9V±0.1V
Part 1
SCOPE
VDD
VDDO
Qx
Qx
Part 2
GND
Qy
LVCMOS
V
DDO
2
V
DDO
2
tsk(pp)
-0.9V±0.1V
2.5 CORE/1.8V OUTPUT LOAD AC TEST CIRCUIT
IDT ™ / ICS™ LVCMOS/LVTTL FANOUT BUFFER
PART-TO-PART SKEW
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ICS83904AG-02 REV. A SEPTEMBER 12, 2007
ICS83904-02
LOW SKEW, 1-TO-4, CRYSTAL-TO-LVCMOS/LVTTL FANOUT BUFFER
V
DDO
Qx
2
VDD
VDD
2
2
CLK
VDDO
V
DDO
Qy
2
tsk(o)
VDDO
2
tpLH
Q0:Q3
2
tpHL
PROPAGATION DELAY
OUTPUT SKEW
V
DDO
2
Q0:Q3
t PW
t
odc =
80%
80%
tR
tF
PERIOD
t PW
Clock
Outputs
x 100%
20%
20%
t PERIOD
OUTPUT DUTY CYCLE/PULSE WIDTH/PERIOD
IDT ™ / ICS™ LVCMOS/LVTTL FANOUT BUFFER
OUTPUT RISE/FALL TIME
10
ICS83904AG-02 REV. A SEPTEMBER 12, 2007
ICS83904-02
LOW SKEW, 1-TO-4, CRYSTAL-TO-LVCMOS/LVTTL FANOUT BUFFER
APPLICATION INFORMATION
CRYSTAL INPUT INTERFACE
Figure 1 shows an example of ICS83904-02 crystal interface with
a parallel resonant crystal. The frequency accuracy can be fine
tuned by adjusting the C1 and C2 values. For a parallel crystal
with loading capacitance CL = 18pF, we suggest C1 = 15pF and
C2 = 15pF to start with. These values may be slightly fine tuned
further to optimize the frequency accuracy for different board
layouts. Slightly increasing the C1 and C2 values will slightly reduce
the frequency. Slightly decreasing the C1 and C2 values will slightly
increase the frequency. For the oscillator circuit below, R1 can be
used, but is not required. For new designs, it is recommended
that R1 not be used.
XTAL_IN
C1
15p
X1
18pF Parallel Cry stal
0
XTAL_OUT
C2
15p
R1 (optional)
FIGURE 1. Crystal Input Interface
LVCMOS TO XTAL INTERFACE
impedance of the driver (Ro) plus the series resistance (Rs) equals
the transmission line impedance. In addition, matched termination
at the crystal input will attenuate the signal in half. This can be
done in one of two ways. First, R1 and R2 in parallel should equal
the transmission line impedance. For most 50Ω applications, R1
and R2 can be 100Ω. This can also be accomplished by removing
R1 and making R2 50Ω.
The XTAL_IN input can accept a single-ended LVCMOS signal
through an AC coupling capacitor. A general interface diagram is
shown in Figure 2. The XTAL_OUT pin can be left floating. The
input edge rate can be as slow as 10ns. For LVCMOS inputs, it is
recommended that the amplitude be reduced from full swing to
half swing in order to prevent signal interference with the power
rail and to reduce noise. This configuration requires that the output
VDD
VDD
R1
Ro
.1uf
Rs
Zo = 50
Zo = Ro + Rs
XTAL_IN
R2
XTAL_OUT
FIGURE 2. GENERAL DIAGRAM FOR LVCMOS DRIVER TO XTAL INPUT INTERFACE
IDT ™ / ICS™ LVCMOS/LVTTL FANOUT BUFFER
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ICS83904AG-02 REV. A SEPTEMBER 12, 2007
ICS83904-02
LOW SKEW, 1-TO-4, CRYSTAL-TO-LVCMOS/LVTTL FANOUT BUFFER
RECOMMENDATIONS FOR UNUSED INPUT AND OUTPUT PINS
INPUTS:
OUTPUTS:
CRYSTAL INPUTS
For applications not requiring the use of the crystal oscillator input,
both XTAL_IN and XTAL_OUT can be left floating. Though not
required, but for additional protection, a 1kΩ resistor can be tied
from XTAL_IN to ground.
LVCMOS OUTPUTS
All unused LVCMOS output can be left floating. There should be
no trace attached.
CLK INPUT
For applications not requiring the use of the clock input, it can be
left floating. Though not required, but for additional protection, a
1kΩ resistor can be tied from the CLK input to ground.
SELECT PINS
All select pins have internal pull-ups and pull-downs; additional
resistance is not required but can be added for additional
protection. A 1kΩ resistor can be used.
IDT ™ / ICS™ LVCMOS/LVTTL FANOUT BUFFER
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RELIABILITY INFORMATION
TABLE 7. θJAVS. AIR FLOW TABLE
FOR
16 LEAD TSSOP
θJA by Velocity (Linear Feet per Minute)
Multi-Layer PCB, JEDEC Standard Test Boards
0
1
2.5
100.3°C/W
96.0°C/W
93.9°C/W
TRANSISTOR COUNT
The transistor count for ICS83904-02 is: 205
PACKAGE OUTLINE - G SUFFIX FOR 16 LEAD TSSOP
TABLE 8. PACKAGE DIMENSIONS
Millimeters
SYMBOL
Minimum
N
A
Maximum
16
--
1.20
A1
0.05
0.15
A2
0.80
1.05
b
0.19
0.30
c
0.09
0.20
D
4.90
5.10
E
E1
6.40 BASIC
4.30
e
4.50
0.65 BASIC
L
0.45
α
0°
8°
aaa
--
0.10
0.75
Reference Document: JEDEC Publication 95, MO-153
IDT ™ / ICS™ LVCMOS/LVTTL FANOUT BUFFER
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TABLE 9. ORDERING INFORMATION
Part/Order Number
Marking
Package
Shipping Packaging
Temperature
ICS83904AG-02
83904A02
16 Lead TSSOP
tube
-40°C to 85°C
ICS83904AG-02T
83904A02
16 Lead TSSOP
2500 tape & reel
-40°C to 85°C
ICS83904AG-02LF
3904A02L
16 Lead "Lead-Free" TSSOP
tube
-40°C to 85°C
ICS83904AG-02LFT
3904A02L
16 Lead "Lead-Free" TSSOP
2500 tape & reel
-40°C to 85°C
NOTE: Par ts that are ordered with an "LF" suffix to the par t number are the Pb-Free configuration and are RoHS compliant.
While the information presented herein has been checked for both accuracy and reliability, Integrated Device Technology, Incorporated (IDT) assumes no responsibility for either its use or for
infringement of any patents or other rights of third parties, which would result from its use. No other circuits, patents, or licenses are implied. This product is intended for use in normal commercial
applications. Any other applications such as those requiring extended temperature ranges high reliability or other extraordinary environmental requirements are not recommended without additional
processing by IDT. IDT reserves the right to change any circuitry or specifications without notice. IDT does not authorize or warrant any IDT product for use in life support devices or critical medical
instruments.
IDT ™ / ICS™ LVCMOS/LVTTL FANOUT BUFFER
14
ICS83904AG-02 REV. A SEPTEMBER 12, 2007
ICS83904-02
LOW SKEW, 1-TO-4, CRYSTAL-TO-LVCMOS/LVTTL FANOUT BUFFER
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© 2007 Integrated Device Technology, Inc. All rights reserved. Product specifications subject to change without notice. IDT, the IDT logo, ICS and HiPerClockS are trademarks
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