FemtoClock
®
Crystal-to-2.5V, 3.3V LVPECL
Clock Multiplier
843081I-01
DATA SHEET
843081I-01 REVISION C 11/5/15 1 ©2015 Integrated Device Technology, Inc.
GENERAL DESCRIPTION
The 843081I-01 is an Ethernet Clock Multiplier. The 843081I-01
accepts a crystal reference of 19.6MHz - 28MHz. The 843081I-
01 has excellent 1ps or lower phase jitter performance, over
the 1.875MHz - 20MHz integration range. The 843081I-01 is
packaged in a small 8-pin TSSOP, making it ideal for use in
systems with limited board space.
FEATURES
One differential LVPECL output
One crystal oscillator interface: 19.6MHz - 28MHz
Output frequency range: 490MHz - 700MHz
VCO range: 490MHz - 700MHz
RMS phase jitter @ 625MHz using a 25MHz reference
(1.875MHz - 20MHz): 0.32ps (typical)
3.3V or 2.5V operating supply
-40°C to 85°C ambient operating temperature
Available in lead-free RoHS compliant package
For functional replacement part use 843071
843081I-01
8-Lead TSSOP
4.40mm x 3.0mm x 0.925mm
package body
G Package
Top View
VCCA
XTAL_OUT
XTAL_IN
V
EE
1
2
3
4
VCC
Q
nQ
OE
8
7
6
5
VCO
490 - 700 MHz
Phase
Detector
M = ÷25 (fixed)
OE
XTAL_IN
XTAL_OUT
Q
nQ
BLOCK DIAGRAM
PIN ASSIGNMENT
FREQUENCY EXAMPLE FUNCTION TABLE
Input
M/N (Multiplier) Output Frequencies (MHz)
XTAL (MHz)
20 25 500
25 25 625
28 25 700
PRODUCT DISCONTINUATION NOTICE - LAST TIME BUY EXPIRES NOVEMBER 2, 2016
FEMTOCLOCKS
®
CRYSTAL-TO-
3.3V, 2.5V LVPECL CLOCK MULTIPLIER
843081I-01 DATA SHEET
2 REVISION C 11/5/15
TABLE 2. PIN CHARACTERISTICS
TABLE 1. PIN DESCRIPTIONS
Symbol Parameter Test Conditions Minimum Typical Maximum Units
C
IN
Input Capacitance 4 pF
R
PULLUP
Input Pullup Resistor 51
kΩ
Number Name Type Description
1V
CCA
Power Analog supply pin.
2,
3
XTAL_OUT,
XTAL_IN
Input
Crystal oscillator interface. XTAL_IN is the input,
XTAL_OUT is the output.
4V
EE
Power Negative supply pin.
5 OE Input Pullup
Output enable pin. When HIGH, Q output is enabled.
When LOW, forces Q to HiZ state. LVCMOS/LVTTL interface levels.
6, 7 nQ, Q Output Differential clock outputs. LVPECL interface levels.
8V
CC
Power Core supply pin.
NOTE: Pullup refers to internal input resistors. See Table 2, Pin Characteristics, for typical values.
REVISION C 11/5/15
843081I-01 DATA SHEET
3 FEMTOCLOCKS
®
CRYSTAL-TO-
3.3V, 2.5V LVPECL CLOCK MULTIPLIER
TABLE 3A. POWER SUPPLY DC CHARACTERISTICS, V
CC
= V
CCA
= 3.3V ± 5%, TA = -40°C TO 85°C
ABSOLUTE MAXIMUM RATINGS
Supply Voltage, V
CC
4.6V
Inputs, V
I
-0.5V to V
CC
+ 0.5V
Outputs, I
O
Continuous Current 50mA
Surge Current 100mA
Package Thermal Impedance, θ
JA
101.7°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 Charac-
teristics is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect product reliability.
TABLE 3C. LVCMOS/LVTTL DC CHARACTERISTICS, V
CC
= V
CCA
= 3.3V ± 5% OR 2.5V ± 5%, TA = -40°C TO 85°C
TABLE 3B. POWER SUPPLY DC CHARACTERISTICS, V
CC
= V
CCA
= 2.5V ± 5%, TA = -40°C TO 85°C
Symbol Parameter Test Conditions Minimum Typical Maximum Units
V
CC
Core Supply Voltage 3.135 3.3 3.465 V
V
CCA
Analog Supply Voltage 3.135 3.3 3.465 V
I
CC
Power Supply Current 72 mA
I
CCA
Analog Supply Current 12 mA
I
EE
Power Supply Current 78 mA
Symbol Parameter Test Conditions Minimum Typical Maximum Units
V
CC
Core Supply Voltage 2.375 2.5 2.625 V
V
CCA
Analog Supply Voltage 2.375 2.5 2.625 V
I
CC
Power Supply Current 60 mA
I
CCA
Analog Supply Current 12 mA
I
EE
Power Supply Current 73 mA
Symbol Parameter Test Conditions Minimum Typical Maximum Units
V
IH
Input High Voltage
V
CC
= 3.3V 2 V
CC
+ 0.3 V
V
CC
= 2.5V 1.7 V
CC
+ 0.3 V
V
IL
Input Low Voltage
V
CC
= 3.3V -0.3 0.8 V
V
CC
= 2.5V -0.3 0.7 V
I
IH
Input High Current V
CC
= V
IN
= 3.465V or 2.625V 5 µA
I
IL
Input Low Current V
CC
= 3.465V or 2.625V, V
IN
= 0V -150 µA

843081AGI-01LF

Mfr. #:
Manufacturer:
Description:
IC CLK MULTIPLIER LVPECL 8-TSSOP
Lifecycle:
New from this manufacturer.
Delivery:
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