IDT IDT5V9910A-7SOI 3.3v low skew pll clock driver turboclock jr Datasheet

IDT5V9910A
3.3V LOW SKEW PLL CLOCK DRIVER TURBOCLOCK JR.
COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGES
3.3V LOW SKEW
PLL CLOCK DRIVER
TURBOCLOCK™ JR.
FEATURES:
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DESCRIPTION:
Eight zero delay outputs
<250ps of output to output skew
Selectable positive or negative edge synchronization
Synchronous output enable
Output frequency: 15MHz to 85MHz
3 skew grades:
IDT5V9910A-2: tSKEW0<250ps
IDT5V9910A-5: tSKEW0<500ps
IDT5V9910A-7: tSKEW0<750ps
3-level inputs for PLL range control
PLL bypass for DC testing
External feedback, internal loop filter
12mA balanced drive outputs
Low Jitter: <200ps peak-to-peak
Available in SOIC package
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IDT5V9910A
The IDT5V9910A is a high fanout phase locked-loop clock driver
intended for high performance computing and data-communications applications. It has eight zero delay LVTTL outputs.
When the GND/sOE pin is held low, all the outputs are synchronously
enabled. However, if GND/sOE is held high, all the outputs except Q2 and
Q3 are synchronously disabled.
Furthermore, when the VCCQ/PE is held high, all the outputs are
synchronized with the positive edge of the REF clock input. When V CCQ/
PE is held low, all the outputs are synchronized with the negative edge of
REF.
The FB signal is compared with the input REF signal at the phase detector
in order to drive the VCO. Phase differences cause the VCO of the PLL to
adjust upwards or downwards accordingly.
An internal loop filter moderates the response of the VCO to the phase
detector. The loop filter transfer function has been chosen to provide minimal
jitter (or frequency variation) while still providing accurate responses to input
frequency changes.
FUNCTIONAL BLOCK DIAGRAM
V CCQ /PE
GND/sOE
Q0
Q1
Q2
Q3
FB
PLL
REF
Q4
Q5
FS
Q6
Q7
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGES
SEPTEMBER 2001
1
c
2001
Integrated Device Technology, Inc.
DSC 5847/1
IDT5V9910A
3.3V LOW SKEW PLL CLOCK DRIVER TURBOCLOCK JR.
COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGES
PIN CONFIGURATION
ABSOLUTE MAXIMUM RATINGS(1)
Symbol
Description
Supply Voltage to Ground
REF
1
24
G ND
V CC Q
2
23
TE ST
FS
3
22
NC
NC
4
21
G ND/sO E
V C C Q /P E
5
20
V CCN
VC CN
6
19
Q7
Q0
7
18
Q6
Q1
8
17
G ND
G ND
9
16
Q5
Q2
10
15
Q4
Q3
11
14
V CCN
VC CN
12
13
FB
VI
Unit
–0.5 to +7
V
DC Input Voltage
–0.5 to VCC+0.5
V
REF Input Voltage
–0.5 to +5.5
V
530
mW
–65 to +150
°C
Maximum Power Dissipation (TA = 85°C)
TSTG
Max
Storage Temperature
NOTE:
1. Stresses beyond those listed under ABSOLUTE MAXIMUM RATINGS may cause
permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions above those indicated in the
operational sections of this specification is not implied. Exposure to absolutemaximum-rated conditions for extended periods may affect device reliability.
CAPACITANCE(TA = +25°C, f = 1MHz, VIN = 0V)
Parameter
CIN
Description
Input Capacitance
Typ.
Max.
Unit
5
7
pF
NOTE:
1. Capacitance applies to all inputs except TEST and FS. It is characterized but not
production tested.
SOIC
TOP VIEW
PIN DESCRIPTION
Pin Name
Type
REF
IN
Description
Reference Clock Input
FB
IN
Feedback Input
TEST (1)
IN
When MID or HIGH, disables PLL (except for conditions of Note 1). REF goes to all outputs. Set LOW for normal operation.
GND/ sOE(1)
IN
Synchronous Output Enable. When HIGH, it stops clock outputs (except Q2 and Q3) in a LOW state - Q2 and Q3 may be used as the
VCCQ/PE
IN
Selectable positive or negative edge control. When LOW/HIGH the outputs are synchronized with the negative/positive edge of the
feedback signal to maintain phase lock. Set GND/sOE LOW for normal operation.
reference clock.
FS(2)
IN
Frequency range select:
FS = GND: 15 to 35MHz
FS = MID (or open): 25 to 60MHz
FS = VCC: 40 to 85MHz
Q0 - Q7
OUT
Eight clock output
VCCN
PWR
Power supply for output buffers
VCCQ
PWR
Power supply for phase locked loop and other internal circuitry
GND
PWR
Ground
NOTES:
1. When TEST = MID and GND/sOE = HIGH, PLL remains active.
2. This input is wired to Vcc, GND, or unconnected. Default is MID level. If it is switched in the real time mode, the outputs may glitch, and the PLL may require an additional
lock time before all data sheet limits are achieved.
2
IDT5V9910A
3.3V LOW SKEW PLL CLOCK DRIVER TURBOCLOCK JR.
COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGES
RECOMMENDED OPERATING RANGE
Symbol
Description
VCC
Power Supply Voltage
TA
Ambient Operating Temperature
IDT5V9910A-5, -7
IDT5V9910A-2
(Industrial)
(Commercial)
Min.
Max.
Min.
Max.
Unit
3
3.6
3
3.6
V
-40
+85
0
+70
°C
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE
Symbol
Parameter
VIH
Input HIGH Voltage
Conditions
Min.
Max.
Unit
Guaranteed Logic HIGH (REF, FB Inputs Only)
2
—
V
—
0.8
V
VCC−0.6
—
V
VIL
Input LOW Voltage
Guaranteed Logic LOW (REF, FB Inputs Only)
VIHH
Input HIGH Voltage(1)
3-Level Inputs Only
VIMM
Input MID Voltage(1)
3-Level Inputs Only
VCC/2−0.3
VCC/2+0.3
V
VILL
Input LOW Voltage(1)
3-Level Inputs Only
—
0.6
V
IIN
Input Leakage Current
VIN = VCC or GND
—
±5
µA
—
±200
(REF, FB Inputs Only)
VCC = Max.
VIN = VCC
I3
3-Level Input DC Current (TEST, FS)
IPU
Input Pull-Up Current (VCCQ/PE)
HIGH Level
VIN = VCC/2
MID Level
—
±50
VIN = GND
LOW Level
—
±200
—
±100
µA
VCC = Max., VIN = GND
µA
IPD
Input Pull-Down Current (GND/sOE)
VCC = Max., VIN = VCC
—
±100
µA
VOH
Output HIGH Voltage
VCC = Min., IOH = −12mA
2.4
—
V
VOL
Output LOW Voltage
VCC = Min., IOL = 12mA
—
0.55
V
NOTE:
1. These inputs are normally wired to VCC, GND, or unconnected. Internal termination resistors bias unconnected inputs to VCC/2. If these inputs are switched, the function and
timing of the outputs may be glitched, and the PLL may require an additional tLOCK time before all datasheet limits are achieved.
POWER SUPPLY CHARACTERISTICS
Symbol
Parameter
ICCQ
Quiescent Power Supply Current
Test Conditions(1)
VCC = Max., TEST = MID, REF = LOW,
Typ.(2)
Max.
Unit
8
25
mA
GND/sOE = LOW, All outputs unloaded
∆ICC
Power Supply Current per Input HIGH
VCC = Max., VIN = 3V
1
30
µA
ICCD
Dynamic Power Supply Current per Output
VCC = Max., CL = 0pF
55
90
µA/MHz
ITOT
Total Power Supply Current
VCC = 3.3V, FREF = 25MHz, CL = 160pF(1)
34
—
VCC = 3.3V, FREF = 33MHz, CL = 160pF(1)
42
—
CL = 160pF(1)
76
—
VCC = 3.3V, FREF = 66MHz,
NOTE:
1. For eight outputs, each loaded with 20pF.
3
mA
IDT5V9910A
3.3V LOW SKEW PLL CLOCK DRIVER TURBOCLOCK JR.
COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGES
INPUT TIMING REQUIREMENTS
Description (1)
Symbol
Min.
Max.
Unit
—
10
ns/V
tR, tF
Maximum input rise and fall times, 0.8V to 2V
tPWC
Input clock pulse, HIGH or LOW
3
—
ns
DH
Input duty cycle
10
90
%
REF
Reference clock input
15
85
MHz
NOTE:
1. Where pulse width implied by DH is less than tPWC limit, tPWC limit applies.
SWITCHING CHARACTERISTICS OVER OPERATING RANGE
IDT5V9910A-2
Symbol Parameter
FREF
Min.
REF Frequency Range
REF Pulse Width HIGH
tRPWL
REF Pulse Width LOW(8)
tSKEW0
IDT5V9910A-5
Max.
Min.
Typ.
IDT5V9910A-7
Max.
Min.
Typ.
Max.
Unit
FS = LOW
15
—
35
15
—
35
15
—
35
FS = MED
25
—
60
25
—
60
25
—
60
FS = HIGH
40
—
85
40
—
85
40
—
85
3
—
—
3
—
—
3
—
—
ns
3
—
—
3
—
—
3
—
—
ns
(8)
tRPWH
Typ.
(1,3,4)
MHz
Zero Output Skew (All Outputs)
—
0.1
0.25
—
0.25
0.5
—
0.3
0.75
ns
tDEV
Device-to-Device Skew(1,2,5)
—
—
0.75
—
—
1.25
—
—
1.65
ns
tPD
REF Input to FB Propagation Delay(1,7)
0
0.5
0
0.7
ns
0
1.2
−0.7
−1.2
0
1.2
ns
1
1.5
0.15
1.5
2.5
ns
(1)
−0.25
−1.2
0
0.25
0
1.2
−0.5
−1.2
1
1.2
0.15
tODCV
Output Duty Cycle Variation from 50%
tORISE
Output Rise Time(1)
0.15
tOFALL
Output Fall Time(1)
0.15
1
1.2
0.15
1
1.5
0.15
1.5
2.5
ns
tLOCK
PLL Lock Time(1,6)
—
—
0.5
—
—
0.5
—
—
0.5
ms
RMS
—
—
25
—
—
25
—
—
25
ps
Peak-to-Peak
—
—
200
—
—
200
—
—
200
tJR
Cycle-to-Cycle Output Jitter(1)
NOTES:
1. All timing and jitter tolerances apply for FNOM > 25MHz.
2. Skew is the time between the earliest and the latest output transition among all outputs with the specified load.
3. tSKEW is the skew between all outlets. See AC TEST LOADS.
4. For IDT5V9910A-2 tSKEW0 is measured with CL = 0pF; for CL = 20pF, tSKEW0 = 0.35ns Max.
5. tDEV is the output-to-output skew between any two devices operating under the same conditions (VCC, ambient temperature, air flow, etc.)
6. tLOCK is the time that is required before synchronization is achieved. This specification is valid only after VCC is stable and within normal operating limits. This parameter is
measured from the application of a new signal or frequency at REF or FB until tPD is within specified limits.
7. tPD is measured with REF input rise and fall times (from 0.8V to 2V ) of 1ns.
8. Refer to INPUT TIMING REQUIREMENTS for more detail.
4
IDT5V9910A
3.3V LOW SKEW PLL CLOCK DRIVER TURBOCLOCK JR.
COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGES
AC TEST LOADS AND WAVEFORMS
≤ 1ns
≤ 1ns
VCC
3.0V
2.0V
Vth = 1.5V
150 Ω
0.8V
0V
Outpu t
LVTTL Input Test Waveform
150 Ω
20p F
t OF AL L
t O R ISE
Test Load
2.0V
0.8V
LVTTL Output Waveform
AC TIMING DIAGRAM
t R EF
t RP W L
t R PW H
REF
t PD
t O D CV
t O D CV
FB
t JR
Q
t S K EW
t SK E W
OTHER Q
NOTES:
Skew:
tSKEW:
The time between the earliest and the latest output transition among all outputs when all are loaded with 20pF and terminated with 75Ω to VCC/2.
The skew between all outputs.
tDEV:
The output-to-output skew between any two devices operating under the same conditions (VCC, ambient temperature, air flow, etc.)
tODCV:
The deviation of the output from a 50% duty cycle.
tORISE and tOFALL are measured between 0.8V and 2V.
tLOCK:
The time that is required before synchronization is achieved. This specification is valid only after VCC is stable and within normal operating limits. This parameter
is measured from the application of a new signal or frequency at REF or FB until t PD is within specified limits.
5
IDT5V9910A
3.3V LOW SKEW PLL CLOCK DRIVER TURBOCLOCK JR.
COMMERCIAL AND INDUSTRIAL TEMPERATURE RANGES
ORDERING INFORMATION
XXXXX
XX
Device Type
Package
ID T
X
Process
CORPORATE HEADQUARTERS
2975 Stender Way
Santa Clara, CA 95054
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Commercial (0°C to +70°C)
Industrial (-40°C to +85°C)
SO
Small Outline IC (300-mil)
5V9910A-2
5V9910A-5
5V9910A-7
3.3V Low Skew PLL Clock Driver TurboC lock Jr.
for SALES:
800-345-7015 or 408-727-6116
fax: 408-492-8674
www.idt.com
6
for Tech Support:
[email protected]
(408) 654-6459
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