IDT2308-5HPGI Datasheet PDF - Integrated Device
| Part Number | IDT2308-5HPGI | |
| Description | 3.3V ZERO DELAY CLOCK MULTIPLIER | |
| Manufacturers | Integrated Device | |
| Logo |  |
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IDT2308
3.3V ZERO DELAY CLOCK MULTIPLIER
COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGES
3.3V ZERO DELAY
CLOCK MULTIPLIER
IDT2308
FEATURES:
• Phase-Lock Loop Clock Distribution for Applications ranging
from 10MHz to 133MHz operating frequency
• Distributes one clock input to two banks of four outputs
• Separate output enable for each output bank
• External feedback (FBK) pin is used to synchronize the outputs
to the clock input
• Output Skew <200 ps
• Low jitter <200 ps cycle-to-cycle
• 1x, 2x, 4x output options (see table):
– IDT2308-1 1x
– IDT2308-2 1x, 2x
– IDT2308-3 2x, 4x
– IDT2308-4 2x
– IDT2308-1H, -2H, and -5H for High Drive
• No external RC network required
• Operates at 3.3V VDD
• Available in SOIC and TSSOP packages
DESCRIPTION:
The IDT2308 is a high-speed phase-lock loop (PLL) clock multiplier. It is
designed to address high-speed clock distribution and multiplication applica-
tions. The zero delay is achieved by aligning the phase between the incoming
clock and the output clock, operable within the range of 10 to 133MHz.
The IDT2308 has two banks of four outputs each that are controlled via two
select addresses. By proper selection of input addresses, both banks can be
put in tri-state mode. In test mode, the PLL is turned off, and the input clock
directly drives the outputs for system testing purposes. In the absence of an
input clock, the IDT2308 enters power down, and the outputs are tri-stated. In
this mode, the device will draw less than 25µA.
The IDT2308 is available in six unique configurations for both pre-
scaling and multiplication of the Input REF Clock. (See available options
table.)
The PLL is closed externally to provide more flexibility by allowing the user
to control the delay between the input clock and the outputs.
The IDT2308 is characterized for both Industrial and Commercial operation.
NOTE: For new designs, refer to AN-233.
FUNCTIONAL BLOCK DIAGRAM
(-3, -4)
16
FBK
2
1
REF
2
(-5)
PLL
2
CLKA1
3
CLKA2
14
CLKA3
15
CLKA4
S2 8
S1 9
Control
Logic
(-2, -3) 2
6
CLKB1
7
CLKB2
10
CLKB3
11
CLKB4
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
COMMERCIAL AND INDUSTRIAL
c 2003 Integrated Device Technology, Inc.
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TEMPERATURE
1
RANGES
APRIL 2003
DSC 5173/9
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IDT2308
3.3V ZERO DELAY CLOCK MULTIPLIER
COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGES
OPERATING CONDITIONS- COMMERCIAL
Symbol
Parameter
Test Conditions
VDD Supply Voltage
TA OperatingTemperature(AmbientTemperature)
CL Load Capacitance below 100MHz
Load Capacitance from 100MHz to 133MHz
CIN InputCapacitance(1)
NOTE:
1. Applies to both REF and FBK.
Min. Max. Unit
3 3.6 V
0 70 °C
— 30 pF
— 15 pF
— 7 pF
DC ELECTRICAL CHARACTERISTICS - COMMERCIAL
Symbol
Parameter
Conditions
VIL Input LOW Voltage Level
VIH Input HIGH Voltage Level
IIL Input LOW Current
VIN = 0V
IIH Input HIGH Current
VIN = VDD
VOL OutputLOWVoltage
IOL = 8mA (-1, -2, -3, -4)
IOL = 12mA (-1H, -2H, -5H)
VOH Output HIGH Voltage
IOH = -8mA (-1, -2, -3, -4)
IOH = -12mA (-1H, -2H, -5H)
IDD_PD
Power Down Current
REF = 0MHz (S2 = S1 = H)
100MHz CLKA (-1, -2, -3, -4)
100MHz CLKA (-1H, -2H, -5H)
IDD Supply Current
Unloaded Outputs
66MHz CLKA (-1, -2, -3, -4)
Select Inputs at VDD or GND 66MHz CLKA (-1H, -2H, -5H)
33MHz CLKA (-1, -2, -3, -4)
33MHz CLKA (-1H, -2H, -5H)
Min.
—
2
—
—
—
2.4
—
—
—
—
—
—
—
Typ.(1)
—
—
—
—
—
Max.
0.8
—
50
100
0.4
——
— 12
— 45
— 70
— 32
— 50
— 18
— 30
Unit
V
V
µA
µA
V
V
µA
mA
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