Cypress CY2V9950AC 2.5/3.3v 200-mhz multi-output zero delay buffer Datasheet

CY2V9950
2.5/3.3V 200-MHz Multi-Output Zero Delay Buffer
Features
2.5V or 3.3V operation
Split output bank power supplies
Output frequency range: 6 MHz to 200 MHz
Output-output skew < 150 ps
Cycle-cycle jitter < 100 ps
Selectable positive or negative edge synchronization
Selectable phase-locked loop (PLL) frequency range
8 LVTTL outputs driving 50Ω terminated lines
LVCMOS/LVTTL Over-voltage tolerant reference input
2x, 4x multiply and (1/2)x, (1/4)x divide ratios
Spread-Spectrum-compatible
Pin-compatible with IDT5V9950 and IDT5T9950
Industrial temperature range: –40°C to +85°C
32-pin TQFP package
The user can program the output banks through 3F[0:1] and
4F[0:1]pins. Any one of the outputs can be connected to
feedback input to achieve different reference frequency multiplication and divide ratios and zero input-output delay.
The device also features split output bank power supplies
which enable the user to run two banks (1Qn and 2Qn) at a
power supply level different from that of the other two banks
(3Qn and 4Qn). Additionally, the PE pin controls the synchronization of the output signals to either the rising or the falling
edge of the reference clock.
Pin Configuration
Block Diagram
PLL
3F1
2Q 1
2F0
2F1
21
20
VDDQ1
1Q0
4Q1
4Q0
VSS
6
7
19
18
1Q1
8
17
VSS
/K
CY2V9950
sOE#
VSS
VSS
9 10 11 12 13 14 15 16
3Q 0
3
3Q 1
4Q 0
3
3
TEST
4
5
VDDQ 3
4F1:0
REF
PE
VDDQ4
2Q1
2Q0
2Q 0
2F1:0
1F0
VDD
1Q 1
1F1
23
22
FB
1F1:0
24
4F0
4F1
1
2
3
VDDQ3
1Q 0
3
VSS
32 31 30 29 28 27 26 25
FB
3F1:0
VDD
3
FS
3
FS VDDQ 1
3Q0
PE
3F0
TEST
R EF
The CY2V9950 is a low-voltage, low-power, eight-output,
200-MHz clock driver. It features functions necessary to
optimize the timing of high performance computer and
communication systems.
3Q1
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Functional Description
/M
4Q 1
VDDQ 4 sO E#
Cypress Semiconductor Corporation
Document #: 38-07436 Rev. *A
•
3901 North First Street
•
San Jose, CA 95134
•
408-943-2600
Revised August 11, 2004
CY2V9950
Pin Definitions
Pin
29
13
27
Name
REF
FB
TEST
22
sOE#
I/O[1]
Type
I
LVTTL/LVCMOS
I
LVTTL
3-Level
I
2-Level
I, PD
4
PE
24, 23, 26,
25, 1, 32, 3, 2
31
19, 20, 15,
16,10,11, 6,
7
21
nF[1:0]
VDDQ1[2]
12
VDDQ3[2]
5
VDDQ4[2]
14,30
VDD[2]
8, 9, 17, 18,
28
VSS
I, PU
I
FS
nQ[1:0]
I
O
PWR
PWR
PWR
PWR
PWR
LVTTL
3-Level
Description
Reference Clock Input.
Feedback Input.
When MID or HIGH, disables PLL (except for conditions of note 3).
REF goes to all outputs. Set LOW for normal operation.
Synchronous Output Enable. When HIGH, it stops clock outputs (except
2Q0 and 2Q1) in a LOW state (for PE = H or M) – 2Q0 and 2Q1 may be
used as the feedback signal to maintain phase lock. When TEST is held at
MID level and sOE# is high, the nF[1:0] pins act as output disable controls
for individual banks when nF[1:0] = LL. Set sOE# LOW for normal
operation.
Selects Positive or Negative Edge Control and High or Low output
drive strength. When LOW / HIGH the outputs are synchronized with the
negative/positive edge of the reference clock. Please see Table 5.
Select frequency of the outputs. Please see Tables 1 and 2.
3-Level
LVTTL
Selects VCO operating frequency range. Please see Table 4.
Four banks of two outputs. Please see Tables 1 and 2 for frequency
settings.
Power
Power supply for Bank 1 and Bank 2 output buffers. Please see Table 6
for supply level constraints
Power supply for Bank 3 output buffers. Please see Table 6 for supply
level constraints
Power supply for Bank 4 output buffers. Please see Table 6 for supply
level constraints
Power supply for internal circuitry. Please see Table 6 for supply level
constraints
Ground.
Power
Power
Power
Power
Device Configuration
The outputs of the CY2V9950 can be configured to run at
frequencies ranging from 6 to 200 MHz. Banks 3 and 4 output
dividers are controlled by 3F[1:0] and 4F[1:0] as indicated in
Table 1 and 2 respectively.
Table 1. Output Divider Settings – Bank 3
3F[1:0]
LL[4]
HH
Other
K – Bank3 Output Divider
2
4
1
Table 2. Output Divider Settings – Bank 4
4F[1:0]
LL[4]
HH
Other
M – Bank4 Output Divider
2
Inverted[5]
1
The divider settings, output frequencies, and possible configurations of connecting FB to ANY output are summarized in
Table 3.
Table 3. Output Frequency Settings
Configuration
Output Frequency
1Q, 2Q [6]
3Q
1Qn, 2Qn
FREF
(1/K) x FREF
(1/M) x FREF
3Qn
K x FREF
FREF
(K/M) x FREF
4Qn
M x FREF
(M/K) x FREF
FREF
FB to
4Q
The 3-level FS control pin setting determines the nominal
operating frequency range of the divide-by-one outputs of the
device. The CY2V9950 PLL operating frequency range that
corresponds to each FS level is given in Table 4.
Notes:
1. ‘PD’ indicates an internal pull-down and ‘PU’ indicates an internal pull-up. ‘3’ indicates a three-level input buffer.
2. A bypass capacitor (0.1µF) should be placed as close as possible to each positive power pin (<0.2”). If these bypass capacitors are not close to the pins their
high frequency filtering characteristic will be cancelled by the lead inductance of the traces.
3. When TEST = MID and sOE# = HIGH, PLL remains active with nF[1:0] = LL functioning as an output disable control for individual output banks. The 1F[0:1]
and 2F[0:1] pins should be either tied to mid-level or left floating (on-chip resistors will bias to mid-level) during normal operation.
4. LL disables outputs if TEST = MID and sOE# = HIGH.
5. When 4Q[0:1] are set to run inverted (HH mode), sOE# disables these outputs HIGH when PE = HIGH, sOE# disables them LOW when PE = LOW.
6. These outputs are undivided copies of the VCO clock. Therefore, the formulas in this column can be used to calculate the VCO operating frequency at a given
reference frequency (FREF) and divider and feedback configurations. The user must select a configuration and a reference frequency that will generate a VCO
frequency that is within the range specified by FS pin. Refer to Table 4.
Document #: 38-07436 Rev. *A
Page 2 of 9
CY2V9950
Table 4. Frequency Range Select
Table 6. Power Supply Constraints
FS
PLL Frequency Range
VDD
VDDQ1[7]
VDDQ3[7]
VDDQ4[7]
L
24 to 50 MHz
3.3V
3.3V or 2.5V
3.3V or 2.5V
3.3V or 2.5V
M
48 to 100 MHz
2.5V
2.5V
2.5V
2.5V
H
96 to 200 MHz
Governing Agencies
The PE pin determines whether the outputs synchronize to the
rising edge or the falling edge of the reference signal, as
indicated in Table 5.
The following agencies provide specifications that apply to the
CY2V9950. The agency name and relevant specification is
listed below.
Table 5. PE Settings
PE
Synchronization
L
Negative
H
Positive
Agency Name
JEDEC
Specification
JESD 51 (Theta JA)
JESD 65 (Skew, Jitter)
IEEE
The CY2V9950 features split power supply buses for Banks 1
and 2, Bank 3 and Bank 4, which enables the user to obtain
both 3.3V and 2.5V output signals from one device. The core
power supply (VDD) must be set a level which is equal or
higher than that on any one of the output power supplies.
UL-194_V0
MIL
1596.3 (Jiter Specs)
94 (Moisture Grading)
883E Method 1012.1 (Therma Theta JC)
Absolute Maximum Conditions
Parameter
Description
Condition
Min.
Max.
Unit
VDD
Operating Voltage
Functional @ 2.5V ± 5%
2.25
2.75
V
VDD
Operating Voltage
Functional @ 3.3V ± 10%
2.97
3.63
V
VIN(MIN)
Input Voltage
Relative to VSS
VSS – 0.3
–
V
VIN(MAX)
Input Voltage
Relative to VDD
–
VDD + 0.3
V
TS
Temperature, Storage
Non Functional
–65
+150
°C
TA
Temperature, Operating Ambient
Functional
–40
+85
°C
TJ
Temperature, Junction
Functional
–
155
°C
ESDHBM
ESD Protection (Human Body Model)
MIL-STD-883, Method 3015
2000
–
V
ØJC
Dissipation, Junction to Case
Mil-Spec 883E Method 1012.1
42
°C/W
ØJA
Dissipation, Junction to Ambient
JEDEC (JESD 51)
105
°C/W
UL-94
Flammability Rating
@1/8 in.
MSL
Moisture Sensitivity Level
FIT
Failure in Time
V–0
1
Manufacturing Testing
10
ppm
DC Electrical Specifications @ 2.5V
Parameter
Description
Conditions
VDD
2.5 Operating Voltage
2.5V ± 5%
VIL
Input LOW Voltage
REF, FB, PE, and sOE# Inputs
VIH
Input HIGH Voltage
VIHH[8]
VIMM[8]
Input HIGH Voltage
VILL[8]
Input LOW Voltage
IIL
Input Leakage Current
Input MID Voltage
3-Level Inputs
(TEST, FS, nF[1:0])
(These pins are normally wired to
VDD,GND or unconnected)
VIN = VDD/GND,VDD = Max
(REF, PE, and FB inputs)
Min.
Max.
Unit
2.375
2.625
V
–
0.7
V
1.7
–
V
VDD – –0.4
–
V
VDD/2–0.2
VDD/2 +
0.2
V
–
0.4
V
–5
5
µA
Notes:
7. VDDQ1/3/4 must not be set at a level higher than that of VDD. They can be set at different levels from each other, e.g., VDD = 3.3V, VDDQ1 = 3.3V, VDDQ3
= 2.5V and VDDQ4 = 2.5V.
8. These Inputs are normally wired to VDD, GND or unconnected. Internal termination resistors bias unconnected inputs to VDD/2.
Document #: 38-07436 Rev. *A
Page 3 of 9
CY2V9950
DC Electrical Specifications @ 2.5V (continued)
I3
3-Level Input DC Current
HIGH, VIN = VDD
MID, VIN = VDD/2
LOW, VIN = VSS
3-Level
Inputs
(TEST, FS,
nF[1:0])
IPU
Input Pull-up Current
VIN = VSS, VDD = Max
IPD
Input Pull-down Current
VIN = VDD, VDD = Max, (sOE#)
VOL
Output LOW Voltage
IOL = 12 mA (nQ[0:1])
VOH
Output HIGH Voltage
IOH = –12 mA (nQ[0:1])
IDDQ
Quiescent Supply Current
VDD = Max, TEST = MID, REF =
LOW, sOE# = LOW, Outputs not
loaded
IDD
Dynamic Supply Current
@100 MHz
CIN
Input Pin Capacitance
–
200
µA
–50
50
µA
–200
–
µA
–25
–
µA
–
100
µA
–
0.4
V
2.0
–
V
–
2
mA
150
mA
4
pF
DC Electrical Specifications @ 3.3V
Parameter
Description
Condition
VDD
3.3 Operating Voltage
3.3V ± 10%
VIL
Input LOW Voltage
REF, FB, PE, and sOE# Inputs
VIH
Input HIGH Voltage
VIHH[8]
Input HIGH Voltage
VIMM[8]
Input MID Voltage
VILL[8]
Input LOW Voltage
IIL
Input Leakage Current
VIN = VDD/GND,VDD = Max
(REF, PE, and FB inputs)
I3
3-Level Input DC Current
HIGH, VIN = VDD
3-Level Inputs
(TEST, FS, nF[1:0])
(These pins are normally wired to
VDD,GND or unconected)
MID, VIN = VDD/2
LOW, VIN = VSS
3-Level
Inputs
(TEST, FS,
nF[1:0])
VIN = VSS, VDD = Max
Min.
Max.
Unit
2.97
3.63
V
–
0.8
V
2.0
–
V
VDD – –0.6
–
V
VDD/2 –
0.3
VDD/2 +
0.3
V
–
0.6
V
–5
5
µA
–
200
µA
–50
50
µA
–200
–
µA
–100
–
µA
IPU
Input Pull-Up Current
IPD
Input Pull-Down Current
VIN = VDD, VDD = Max, (sOE#)
–
100
µA
VOL
Output LOW Voltage
IOL = 12 mA, (nQ[0:1])
–
0.4
V
VOH
Output HIGH Voltage
IOH = –12 mA, (nQ[0:1])
2.4
–
V
IDDQ
Quiescent Supply Current
VDD = Max, TEST = MID, REF =
LOW, sOE# = LOW, outputs not
loaded
–
2
mA
IDD
Dynamic Supply Current
@100 MHz
CIN
Input Pin Capacitance
230
mA
4
pF
AC Input Specifications
Parameter
Description
Condition
Min.
Max.
Unit
TR,TF
Input Rise/Fall Time
0.8V – 2.0V
–
10
ns/V
TPWC
Input Clock Pulse
HIGH or LOW
2
–
ns
TDCIN
Input Duty Cycle
%
FREF
Reference Input Frequency
Document #: 38-07436 Rev. *A
10
90
FS = LOW
6
50
FS = MID
12
100
FS = HIGH
24
200
MHz
Page 4 of 9
CY2V9950
Switching Characteristics
Parameter
Description
Min.
Max.
Unit
6
200
MHz
VCO Lock Range
200
400
MHz
VCO Loop Bandwidth
0.25
3.5
MHz
Skew between the earliest and the latest output
transitions within the same bank
–
150
ps
Skew between the earliest and the latest output
transitions among all outputs
–
200
ps
tSKEW1
Skew between the earliest and the latest output
transitions among all same class outputs
–
200
ps
tSKEW2
Skew between the nominal output rising edge to the
inverted output falling edge
–
500
ps
tSKEW3
Skew between non-inverted outputs running at
different frequencies
–
500
ps
tSKEW4
Skew between nominal to inverted outputs running
at different frequencies
–
500
ps
tSKEW5
Skew between nominal outputs at different power
supply levels
–
650
ps
Skew between the outputs of any two devices under
identical settings and conditions (VDDQ, VDD, temp,
air flow, frequency, etc.)
–
750
ps
–250
+250
ps
FOR
Output frequency range
VCOLR
VCOLBW
tSKEWPR
Matched-Pair
Skew[9]
tSKEW0
Output-Output Skew[9]
Condition
tPART
Part-Part Skew
tPD0
Ref to FB Propagation Delay[10]
tODCV
Output Duty Cycle
Measured at VDD/2
45
55
%
tPWH
Output High Time Deviation
from 50%
Measured at 2.0V for VDD = 3.3V and at 1.7V for
VDD = 2.5V.
–
1.5
ns
tPWL
Output Low Time Deviation
from 50%
Measured at 0.8V for VDD = 3.3V and at 0.7V for
VDD = 2.5V.
–
2.0
ns
tR/tF
Output Rise/Fall Time
Measured at 0.8V – 2.0V for VDD = 3.3V and 0.7V –
1.7V for VDD = 2.5V
0.15
1.5
ns
tLOCK
PLL lock time[11,12]
–
0.5
ms
tCCJ
Cycle-Cycle Jitter
Divide by 1 output frequency, FS = L, FB = divide
by 1, 2, 4
–
100
ps
Divide by 1 output frequency, FS = M/H, FB = divide
by 1, 2, 4
–
150
ps
Notes:
9. Test Load = 20 pF, terminated to VCC/2. All outputs are equally loaded.
10. tPD is measured at 1.5V for VDD = 3.3V and at 1.25V for VDD = 2.5V with REF rise/fall times of 0.5ns between 0.8V–2.0V.
11. tLOCK is the time that is required before outputs synchronize to REF. This specification is valid with stable power supplies which are within normal operating limits.
12. Lock detector circuit may be unreliable for input frequencies lower than 4MHz, or for input signals which contain significant jitter.
Document #: 38-07436 Rev. *A
Page 5 of 9
CY2V9950
AC Timing Definitions
tREF
tPWL
tPWH
REF
tPD
t0DCV
t0DCV
FB
tCCJ1-12
Q
tSKEWPR
tSKEW0,1
tSKEWPR
tSKEW0,1
OTHER Q
tSKEW1
tSKEW1
INVERTED Q
tSKEW3
tSKEW3
tSKEW3
REF DIVIDED BY 2
tSKEW1,3,4
tSKEW1,3,4
REF DIVIDED BY 4
Document #: 38-07436 Rev. *A
Page 6 of 9
CY2V9950
AC Test Loads and Waveforms
VDDQ
Output
150Ω
20pF
Output
20pF
150Ω
For Lock Output
For All Other Outputs
Figure 1.
tORISE
tORISE
tOFALL
tPWH
2.0V
tOFALL
tPWH
1.7V
VTH =1.25V
VTH =1.5V
tPWL
0.8V
tPWL
0.7V
2.5V LVTTL OUTPUT WAVEFORM
3.3V LVTTL OUTPUT WAVEFORM
Figure 2. LVTTL Output Test Waveforms
≤ 1ns
≤ 1ns
≤ 1ns
≤ 1ns
2.5V
3.0V
1.7V
2.0V
VTH =1.25V
VTH =1.5V
0.7V
0V
0.8V
0V
2.5V LVTTL INPUT TEST WAVEFORM
3.3V LVTTL INPUT TEST WAVEFORM
Figure 3. LVTTL Input Test Waveforms
Ordering Information
Part Number
Package Type
Product Flow
CY2V9950AC
32 TQFP
Commercial, 0° to 70°C
CY2V9950ACT
32 TQFP – Tape and Reel
Commercial, 0° to 70°C
CY2V9950AI
32 TQFP
Industrial, –40° to 85°C
CY2V9950AIT
32 TQFP – Tape and Reel
Industrial, –40° to 85°C
Document #: 38-07436 Rev. *A
Page 7 of 9
CY2V9950
Package Drawing and Dimensions
32-lead Thin Plastic Quad Flatpack 7 x 7 x 1.0 mm A32
51-85063-B
All product and company names mentioned in this document are the trademarks of their respective holders.
Document #: 38-07436 Rev. *A
Page 8 of 9
© Cypress Semiconductor Corporation, 2004. The information contained herein is subject to change without notice. Cypress Semiconductor Corporation assumes no responsibility for the use
of any circuitry other than circuitry embodied in a Cypress product. Nor does it convey or imply any license under patent or other rights. Cypress products are not warranted nor intended to be
used for medical, life support, life saving, critical control or safety applications, unless pursuant to an express written agreement with Cypress. Furthermore, Cypress does not authorize its
products for use as critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of Cypress
products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress against all charges.
CY2V9950
Document History Page
Document Title:CY2V9950 2.5/3.3V 200-MHz Multi-Output Zero Delay Buffer
Document Number: 38-07436
Issue Date
Orig. of
Change
REV.
ECN No.
**
122628
01/10/03
RGL
*A
252355
See ECN
RGL/GGK
Document #: 38-07436 Rev. *A
Description of Change
New Data Sheet
Fixed Note 3 definition.
Page 9 of 9
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