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83908AGI-02LF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16
Low Skew, 1-to-8 Crystal-to-LVCMOS
Fanout Buffer
83908I-02
Data Sheet
©2016 Integrated Device Technology, Inc Revision A March 17, 20161
GENERAL DESCRIPTION
The 83908I-02 is a low skew, high performance 1-to-8
Crystal Oscillator//Crystal-to-LVCMOS fanout buffer from
IDT. The 83908I-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.
Guaranteed output and part-to-part skew characteristics make
the 83908I-02 ideal for those applications demanding well defi ned
performance and repeatability.
FEATURES
• Eight LVCMOS/LVTTL outputs ,
19Ω typical output impedance @ V
DD
= V
DDO
= 3.3V
• Two Crystal oscillator input pairs
One LVCMOS/LVTTL clock input
• Crystal input frequency range: 10MHz - 40MHz
• Output frequency: 200MHz (typical)
• Output Skew: 70ps (maximum) @ V
DD
= V
DDO
= 3.3V
• Part-to-part skew: 700ps (maximum) @ V
DD
= V
DDO
= 3.3V
• RMS phase jitter @ 25MHz output using a 25MHz crystal
(12kHz - 10MHz): 0.39ps (typical) @ V
DD
= V
DDO
= 3.3V
Offset Noise Power
100Hz ..............-111.4 dBc/Hz
1kHz ..............-139.9 dBc/Hz
10kHz ..............-157.3 dBc/Hz
100kHz ..............-157.5 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
• -40°C to 85°C ambient operating temperature
• Available in lead-free (RoHS 6) package
OSC
OSC
0 0
0 1
1 0
1 1
Q0
Q7
8 LVCMOS Outputs
Pullup
Pulldown
Pulldown
Pulldown
OE
CLK_SEL0
CLK
CLK_SEL1
XTAL_IN0
XTAL_OUT0
XTAL_IN1
XTAL_OUT1
BLOCK DIAGRAM
PIN ASSIGNMENT
83908I-02
24-Lead, 173-MIL TSSOP
4.4mm x 7.8mm x 0.925mm
body package
G Package
Top View
VDD
XTAL_IN0
XTAL_OUT0
VDDO
Q0
Q1
GND
Q2
Q3
V
DDO
CLK_SEL0
CLK
GND
XTAL_IN1
XTAL_OUT1
V
DDO
Q7
Q6
GND
Q5
Q4
V
DDO
CLK_SEL1
OE
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
83908I-02 Data Sheet
©2016 Integrated Device Technology, Inc Revision A March 17, 20162
TABLE 1. PIN DESCRIPTIONS
TABLE 2. PIN CHARACTERISTICS
Number Name Type Description
1V
DD
Power Power supply pin.
2, 3
XTAL_IN0,
XTAL_OUT0
Input
Crystal oscillator interface. XTAL_IN0 is the input.
XTAL_OUT0 is the output.
4, 10, 15, 21 V
DDO
Power Output supply pins.
5, 6, 8,
9, 16, 17,
19, 20
Q0, Q1, Q2, Q3,
Q4, Q5, Q6, Q7
Output Single-ended clock outputs. LVCMOS/LVTTL interface levels.
7, 18, 24 GND Power Power supply ground.
11,
14
CLK_SEL0,
CLK_SEL1
Input Pulldown
Clock select inputs. See Table 3, Input Reference Function Table.
LVCMOS / LVTTL interface levels.
12 CLK Input Pulldown Single-ended clock input. LVCMOS/LVTTL interface levels.
13 OE Input Pullup
Output enable. When LOW, outputs are in HIGH impedance state.
When HIGH, outputs are active. LVCMOS / LVTTL interface levels.
22, 23
XTAL_OUT1,
XTAL_IN1
Input
Crystal oscillator interface. XTAL_IN1 is the input.
XTAL_OUT1 is the output.
NOTE: Pullup and Pulldown refer to internal input resistors. See Table 2, Pin Characteristics, for typical values.
TABLE 3. INPUT REFERENCE FUNCTION TABLE
Symbol Parameter Test Conditions Minimum Typical Maximum Units
C
IN
Input Capacitance 4 pF
R
PULLUP
Input Pullup Resistor 51
kΩ
R
PULLDOWN
Input Pulldown Resistor 51
kΩ
C
PD
Power Dissipation Capacitance
(per output)
V
DDO
= 3.465V 7 pF
V
DDO
= 2.625V 7 pF
V
DDO
= 2V 6 pF
R
OUT
Output Impedance
V
DDO
= 3.3V ± 5% 19
Ω
V
DDO
= 2.5V ± 5% 21
Ω
V
DDO
= 1.8V ± 0.2V 32
Ω
Control Inputs
Reference
CLK_SEL1 CLK_SEL0
0 0 XTAL0 enabled (default) XTAL1 disabled
0 1 XTAL1 enabled XTAL0 disabled
1 0 CLK enabled XTAL0 and XTAL1 disabled
1 1 CLK enabled XTAL0 and XTAL1 disabled
83908I-02 Data Sheet
©2016 Integrated Device Technology, Inc Revision A March 17, 20163
ABSOLUTE MAXIMUM RATINGS
Supply Voltage, V
DD
4.6V
Inputs, V
I
-0.5V to V
DD
+ 0.5 V
Outputs, V
O
-0.5V to V
DDO
+ 0.5V
Package Thermal Impedance, θ
JA
87.8°C/W (0 mps)
Storage Temperature, T
STG
-65°C to 150°C
NOTE: Stresses beyond those listed under Absolute
Maximum Ratings may cause permanent damage to the
device. These ratings are stress specifi cations 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 ex-
tended periods may affect product reliability.
TABLE 4A. POWER SUPPLY DC CHARACTERISTICS, V
DD
= V
DDO
= 3.3V±5%, TA = -40°C TO 85°C
Symbol Parameter Test Conditions Minimum Typical Maximum Units
V
DD
Core Supply Voltage 3.135 3.3 3.465 V
V
DDO
Output Supply Voltage 3.135 3.3 3.465 V
I
DD
Power Supply Current
No Load & XTALx selected 30 mA
No Load & CLK selected 1 mA
I
DDO
Output Supply Current No Load & CLK selected 1 mA
TABLE 4B. POWER SUPPLY DC CHARACTERISTICS, V
DD
= 3.3V±5%, V
DDO
= 2.5V±5%, TA = -40°C TO 85°C
Symbol Parameter Test Conditions Minimum Typical Maximum Units
V
DD
Core Supply Voltage 3.135 3.3 3.465 V
V
DDO
Output Supply Voltage 2.375 2.5 2.625 V
I
DD
Power Supply Current
No Load & XTALx selected 30 mA
No Load & CLK selected 1 mA
I
DDO
Output Supply Current No Load & CLK selected 1 mA
TABLE 4C. POWER SUPPLY DC CHARACTERISTICS, V
DD
= 3.3V±5%, V
DDO
= 1.8V±0.2V, TA = -40°C TO 85°C
Symbol Parameter Test Conditions Minimum Typical Maximum Units
V
DD
Core Supply Voltage 3.135 3.3 3.465 V
V
DDO
Output Supply Voltage 1.6 1.8 2.0 V
I
DD
Power Supply Current
No Load & XTALx selected 30 mA
No Load & CLK selected 1 mA
I
DDO
Output Supply Current No Load & CLK selected 1 mA
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16

83908AGI-02LF

Mfr. #:
Buy 83908AGI-02LF
Manufacturer:
IDT
Description:
Clock Buffer XTAL Oscillator (2) to 8 LVCMOS Output F
Lifecycle:
New from this manufacturer.
Delivery:
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