Cypress CY25814ZCT Spread spectrum clock generator Datasheet

CY25811/12/14
Spread Spectrum Clock Generator
Features
Applications
• 4- to 32-MHz input frequency range
• Printers and MFPs
• 4- to 128-MHz output frequency range
• LCD panels
• Accepts clock, crystal, and resonator inputs
• Digital copiers
• 1x, 2x, and 4x frequency multiplication:
• PDAs
— CY25811: 1x; CY25812: 2x; CY25814: 4x
• CD-ROM, VCD, and DVD
• Center and down spread modulation
• Networking, LAN/WAN
• Low power dissipation:
• Scanners
— 3.3V = 52 mW-typ @ 6MHz
• Modems
— 3.3V = 60 mW-typ @ 12MHz
• Embedded digital systems
— 3.3V = 72 mW-typ @ 24MHz
Benefits
• Low cycle-to cycle jitter:
• Peak EMI reduction by 8 to 16 dB
— 8 MHz = 450 ps-max
• Fast time to market
— 16 MHz = 225 ps-max
• Cost reduction
— 32 MHz = 150 ps-max
• Available in 8-pin SOIC and TSSOP packages
• Commercial and industrial temperature ranges
Block Diagram
Pin Configuration
300K
XIN 1
8pF
XOUT
REFERENCE
DIVIDER
PD and
CP
LF
MODULATION
CONTROL
VCO
COUNTE
R
VCO
XIN/CLKIN 1
8
XOUT
7
VDD
6
FRSEL
5
SSCLK
8
8pF
VSS 2
S1 3
VDD 7
INPUT
DECODER
LOGIC
VSS 2
6
3
4
FRSEL
S1
S0
Cypress Semiconductor Corporation
Document #: 38-07112 Rev. *E
COUNTER
and
MUX
CY25811
CY25812
CY25814
S0 4
5
SSCLK
8-pin SOIC/TSSOP
•
3901 North First Street
•
San Jose, CA 95134
•
408-943-2600
Revised June 03, 2004
CY25811/12/14
Pin Definitions
Pin No.
Name
Type
Description
1
Xin/CLK
2
VSS
3
S1
Digital Spread% control pin. 3-Level input (H-M-L). Default = M.
4
S0
Digital Spread% control pin. 3-Level input (H-M-L). Default = M.
5
SSCLK
Spread Spectrum output clock.
6
FRSEL
Input frequency range selection digital control input. 3-Level input (H-M-L). Default = M.
7
VDD
8
XOUT
Crystal, ceramic resonator or clock input pin.
Power supply ground.
Positive power supply.
Crystal or ceramic resonator output pin.
Functional Description
The CY25811/12/14 products are Spread Spectrum Clock
Generator (SSCG) ICs used for the purpose of reducing
electromagnetic interference (EMI) found in today’s
high-speed digital electronic systems.
The devices use a Cypress proprietary phase-locked loop
(PLL) and Spread Spectrum Clock (SSC) technology to
synthesize and modulate the frequency of the input clock. By
frequency modulating the clock, the measured EMI at the
fundamental and harmonic frequencies is greatly reduced.
Spread % for each Spread Mode with the option of a
Non-Spread mode for system test and verification purposes.
The CY25811/12/14 products are available in an 8-pin SOIC
(150-mil.) package with a Commercial operating temperature
range of 0 to 70°C and Industrial Temperature range of –40 to
85°C. Refer to CY25568 for multiple clock output options such
as modulated and unmodulated clock outputs or Power-down
function.
For
Automotive
applications,
refer
to
CY25811/12/14SE data sheet.
Input Frequency Range and Selection
This reduction in radiated energy can significantly reduce the
cost of complying with regulatory agency requirements and
improve time to market without degrading system performance.
The CY25811/12/14 input frequency range is 4 to 32 MHz.
This range is divided into three segments and controlled by
3-Level FRSEL pin as given in Table 1.
The input frequency range is 4 to 32 MHz and accepts clock,
crystal and ceramic resonator inputs. The output clock can be
selected to produce 1x, 2x, or 4x multiplication of the input
frequency with Spread Spectrum Frequency Modulation.
Table 1. Input Frequency Selection
The use of 2x or 4x frequency multiplication eliminates the
need for higher order crystals and enables the user to
generate up to 128-MHz Spread Spectrum Clock (SSC) by
using only first order crystals. This will reduce the cost while
improving the system clock accuracy, performance and
complexity.
Center Spread or Down Spread frequency modulation can be
selected by the user based on four discrete values of
FRSEL
Input Frequency Range
0
4.0 to 8.0 MHz
1
8.0 to 16.0 MHz
M
16.0 to 32.0 MHz
Spread% Selection
The CY25811/12/14 SSCG products provide Center-Spread,
Down-Spread and No-Spread functions. The amount of
Spread% is selected by using 3-Level S0 and S1 digital inputs
and Spread% values are given in Table 2.
Table 2. Spread% Selection
XIN
(MHz)
FRSEL
S1 = 0
S0 = 0
S1 = 0
S0 = M
S1 = 0
S0 = 1
S1 = M
S0 = 0
S1 = 1
S0 = 1
S1 = 1
S0 = 0
S1 = M
S0 = 1
S1 = 1
S0 = M
S1 = M
S0 = M
Center
(%)
Center
(%)
Center
(%)
Center
(%)
Down
(%)
Down
(%)
Down
(%)
Down
(%)
No Spread
4-5
0
±1.4
± 1.2
± 0.6
± 0.5
–3.0
–2.2
–1.9
–0.7
0
5-6
0
±1.3
± 1.1
± 0.5
± 0.4
–2.7
–1.9
–1.7
–0.6
0
6-7
0
±1.2
± 0.9
± 0.5
± 0.4
–2.5
–1.8
–1.5
–0.6
0
7-8
0
±1.1
± 0.9
± 0.4
± 0.3
–2.3
–1.7
–1.4
–0.5
0
8-10
1
±1.4
±1.2
± 0.6
± 0.5
–3.0
–2.2
–1.9
–0.7
0
10-12
1
±1.3
±1.1
± 0.5
± 0.4
–2.7
–1.9
–1.7
–0.6
0
12-14
1
±1.2
± 0.9
± 0.5
± 0.4
–2.5
–1.8
–1.5
–0.6
0
14-16
1
±1.1
± 0.9
± 0.4
± 0.3
–2.3
–1.7
–1.4
–0.5
0
16-20
M
±1.4
±1.2
± 0.6
± 0.5
–3.0
–2.2
–1.9
–0.7
0
Document #: 38-07112 Rev. *E
Page 2 of 11
CY25811/12/14
Table 2. Spread% Selection (continued)
XIN
(MHz)
FRSEL
S1 = 0
S0 = 0
S1 = 0
S0 = M
S1 = 0
S0 = 1
S1 = M
S0 = 0
S1 = 1
S0 = 1
S1 = 1
S0 = 0
S1 = M
S0 = 1
S1 = 1
S0 = M
S1 = M
S0 = M
20-24
M
±1.3
±1.1
± 0.5
± 0.4
–2.7
–1.9
–1.7
–0.6
0
24-28
M
±1.2
± 0.9
± 0.5
± 0.4
–2.5
–1.8
–1.5
–0.6
0
28-32
M
±1.1
± 0.9
± 0.4
± 0.3
–2.3
–1.7
–1.4
–0.5
0
3-Level Digital Inputs
S0, S1, and FRSEL digital inputs are designed to sense 3
different logic levels designated as High “1”, Low “0” and
Middle “M”. With this 3-Level digital input logic, the 3-Level
Logic is able to detect 9 different logic states.
S0, S1 and FRSEL pins include an on chip 20K (10K/10K)
resistor divider. No external application resistors are needed
to implement the 3-Level logic levels as shown below:
Logic Level “0”: 3–Level logic pin connected to GND.
Logic Level “M”: 3–Level logic pin left floating (no connection).
Logic Level “1”: 3–Level logic pin connected to VDD.
Figure 1 illustrates how to implement 3–Level Logic.
LOGIC
MIDDLE (M)
LOGIC
LOW (0)
LOGIC
HIGH (H)
S0, S1
and
FRSEL
UNCONNECTED
S0, S1
and
FRSEL
to VSS
S0, S1
and
FRSEL
to VDD
VSS
Figure 1. 3–Level Logic
Modulation Rate
Spread Spectrum Clock Generators utilize frequency
modulation (FM) to distribute energy over a specific band of
frequencies. The maximum frequency of the clock (fmax) and
minimum frequency of the clock (fmin) determine this band of
frequencies. The time required to transition from fmin to fmax
and back to fmin is the period of the Modulation Rate. The
Modulation Rate of SSCG clocks are generally referred to in
terms of frequency, or
fmod = 1/Tmod.
The input clock frequency, fin, and the internal divider
determine the Modulation Rate.
In the case of CY25811/2/4 devices, the (Spread Spectrum)
modulation Rate, fmod, is given by the following formula:
fmod = fin/DR
where; fmod is the Modulation Rate, fin is the Input Frequency
and DR is the Divider Ratio as given in Table 3. Notice that
Input Frequency Range is set by FRSEL.
Document #: 38-07112 Rev. *E
Table 3. Modulation Rate Divider Ratios
Input Frequency Range
(MHz)
Divider Ratio
(DR)
0
4 to 8
128
1
8 to 16
256
M
16 to 32
512
FRSEL
Input and Output Frequency Selection
The relationship between input frequency versus output
frequency in terms of device selection and FRSEL setting is
given in Table 4. As shown, the input frequency range is
selected by FRSEL and is the same for CY25811, CY25812,
and CY25814. The selection of CY25811 (1x), CY25812 (2x)
or CY25814 (4x) determines the frequency multiplication at
the output (SSCLK, Pin 5) with respect to input frequency
(XIN, Pin-1).
Page 3 of 11
CY25811/12/14
Table 4. Input and Output Frequency Selection
Input Frequency Range
(MHz)
FRSEL
Product
Multiplication
Output Frequency Range
(MHz)
4 to 8
0
CY25811
1x
4 to 8
8 to 16
1
CY25811
1x
8 to 16
16 to 32
M
CY25811
1x
16 to 32
4 to 8
0
CY25812
2x
8 to 16
8 to 16
1
CY25812
2x
16 to 32
16 to 32
M
CY25812
2x
32 to 64
4 to 8
0
CY25814
4x
16 to 32
8 to 16
1
CY25814
4x
32 to 64
16 to 32
M
CY25814
4x
64 to 128
Absolute Maximum Conditions (both Commercial and Industrial Grades)[1,2]
Parameter
Description
VDD
Supply Voltage
Condition
Min.
Max.
Unit
–0.5
4.6
V
VIN
Input Voltage
Relative to V SS
–0.5
VDD + 0.5
VDC
TS
Temperature, Storage
Non Functional
–65
150
°C
TA1
Temperature, Operating Ambient
Functional, C-Grade
0
70
°C
TA2
Temperature, Operating Ambient
Functional, I-Grade
–40
85
°C
TJ
Temperature, Junction
Functional
–
150
°C
ESDHBM
ESD Protection (Human Body Model) MIL-STD-883, Method 3015
2000
–
V
UL-94
Flammability Rating
MSL
Moisture Sensitivity Level
@1/8 in.
V–0
1
DC Electrical Specifications (Commercial Grade)
Parameter
Description
VDD
3.3 Operating Voltage
Condition
3.3 ± 5%
Min.
Max.
Unit
3.135
3.465
V
0
0.15VDD
V
0.40VDD 0.60VDD
0.85VDD
VDD
V
VIL
Input Low Voltage
S0, S1 and FRSEL Inputs
VIM
Input Middle Voltage
S0, S1 and FRSEL Inputs
VIH
Input High Voltage
S0, S1 and FRSEL Inputs
VOL1
Output Low Voltage
IOL = 4 ma, SSCLK Output
VOL2
Output Low Voltage
VOH1
Output High Voltage
VOH2
Output High Voltage
IOH = 6 ma, SSCLK Output
2.0
–
V
CIN1
Input Pin Capacitance
XIN (Pin 1) and XOUT (Pin 8)
6.0
9.0
pF
CIN2
Input Pin Capacitance
All Digital Inputs
3.5
6.0
pF
CL
Output Load Capacitor
SSCLK Output
–
15
pF
IDD1
Dynamic Supply Current
Fin = 12 MHz, no load
–
25
mA
IDD2
Dynamic Supply Current
Fin = 24 MHz, no load
–
30
mA
IDD3
Dynamic Supply Current
Fin = 32 MHz, no load
–
35
mA
V
–
0.4
V
IOL = 10 ma, SSCLK Output
–
1.2
V
IOH = 4 ma, SSCLK Output
2.4
–
V
Notes:
1. Operation at any Absolute Maximum Rating is not implied.
2. Single Power Supply: The voltage on any input or I/O pin cannot exceed the power pin during power up.
Document #: 38-07112 Rev. *E
Page 4 of 11
CY25811/12/14
AC Electrical Specifications (Commercial Grade)
Condition
Min.
Max.
Unit
FIN
Parameter
Input Frequency Range
Description
Clock, Crystal or Ceramic Resonator Input
4
32
MHz
TR1
Clock Rise Time
SSCLK, CY25811 and CY25812
2.0
5.0
ns
TF1
Clock Fall Time
SSCLK, CY25811 and CY25812
2.0
4.4
ns
TR2
Clock Rise Time
SSCLK, only CY25814 when FRSEL = M
1.0
2.2
ns
TF2
Clock Fall Time
SSCLK, only CY25814 when FRSEL = M
1.0
2.2
ns
TDCIN
Input Clock Duty Cycle
XIN
40
60
%
TDCOUT
Output Clock Duty Cycle
SSCLK
40
60
%
TCCJ1
Cycle-to-Cycle Jitter, Spread on
Fin = 4 MHz, Fout = 4 MHz, CY25811
–
800
ps
TCCJ2
Cycle-to-Cycle Jitter, Spread on
Fin = 8 MHZ, Fout = 8 MHz, CY25811
–
450
ps
TCCJ3
Cycle-to-Cycle Jitter, Spread on
Fin = 8 MHz, Fout = 16 MHz, CY25812
–
400
ps
TCCJ4
Cycle-to-Cycle Jitter, Spread on
Fin = 16 MHz, Fout = 32 MHz, CY25812
–
380
ps
TCCJ5
Cycle-to-Cycle Jitter, Spread on
Fin = 16 MHz, Fout = 64 MHz, CY25814
–
380
ps
TCCJ6
Cycle-to-Cycle Jitter, Spread on
Fin = 32 MHz, Fout = 128 MHz, CY25814
–
380
ps
TSU
PLL Lock Time
Fom VDD 3.0V to valid SSCLK
–
3
ms
Min.
Max.
Unit
3.135
3.465
V
0
0.13VDD
V
DC Electrical Specifications (Industrial Grade)
Parameter
Description
Condition
VDD
3.3 Operating Voltage
3.3 ± 5%
VIL
Input Low Voltage
S0, S1 and FRSEL Inputs
VIM
Input Middle Voltage
S0, S1 and FRSEL Inputs
0.40VDD 0.60VDD
V
VIH
Input High Voltage
S0, S1 and FRSEL Inputs
0.85VDD
VDD
V
VOL1
Output Low Voltage
IOL = 4 ma, SSCLK Output
–
0.4
V
VOL2
Output Low Voltage
IOL = 10 ma, SSCLK Output
–
1.2
V
VOH1
Output High Voltage
IOH = 4 ma, SSCLK Output
2.4
–
V
VOH2
Output High Voltage
IOH = 6 ma, SSCLK Output
2.0
–
V
CIN1
Input Pin Capacitance
XIN (Pin 1) and XOUT (Pin 8)
6.0
9.0
pF
CIN2
Input Pin Capacitance
All Digital Inputs
3.5
6.0
pF
CL
Output Load Capacitor
SSCLK Output
–
15
pF
IDD1
Dynamic Supply Current
Fin = 12 MHz, no load
–
26
mA
IDD2
Dynamic Supply Current
Fin = 24 MHz, no load
–
32
mA
IDD3
Dynamic Supply Current
Fin = 32 MHz, no load
–
37
mA
Min.
Max.
Unit
AC Electrical Specifications (Industrial Grade)
Parameter
Description
Condition
FIN
Input Frequency Range
Clock, Crystal or Ceramic Resonator Input
4
32
MHz
TR1
Clock Rise Time
SSCLK, CY25811 and CY25812
2.0
5.0
ns
TF1
Clock Fall Time
SSCLK, CY25811 and CY25812
2.0
4.4
ns
TR2
Clock Rise Time
SSCLK, only CY25814 when FRSEL = M
1.0
2.2
ns
TF2
Clock Fall Time
SSCLK, only CY25814 when FRSEL = M
1.0
2.2
ns
TDCIN
Input Clock Duty Cycle
XIN
40
60
%
TDCOUT
Output Clock Duty Cycle
SSCLK
40
60
%
TCCJ1
Cycle-to-Cycle Jitter, Spread on
Fin = 6MHz, CY25811/12/14
–
650
ps
TCCJ2
Cycle-to-Cycle Jitter, Spread on
Fin = 12MHZ, CY25811/12/14
–
400
ps
TCCJ3
Cycle-to-Cycle Jitter, Spread on
Fin = 24MHz, CY25811/12/14
–
400
ps
TSU
PLL Lock Time
From VDD 3.0V to valid SSCLK
–
4
ms
Document #: 38-07112 Rev. *E
Page 5 of 11
CY25811/12/14
Characteristic Curves
The following curves demonstrate the characteristic behavior
of the CY25811/12/14 when tested over a number of environmental and application-specific parameters. These are typical
performance curves and are not meant to replace any
parameter specified in DC and AC Specification tables.
600
2.75
6.0 MHz
32.0 MHz
500
2.5
BW %
CCJ (ps)
400
300
2.25
200
2
100
1.75
0
4
8
12
16
20
24
28
-40
32
-25
-10
5
20
Jitter vs. Input Frequency (No Load)
FRSEL = M
16 - 32 MHz
BW (%)
IDD (mA)
24
FRSEL = 1
8 - 16 MHz
20
18
16
FRSEL = 0
4 - 8 MHz
14
12
10
4
4.5
5
5.5
6
65
80
95
110
125
3
2.9
2.8
2.7
28
22
50
Bandwidth % vs. Temperature
30
26
35
Temp (C)
Input Frequency (MHz)
6.5
7
7.5
8
2.6
2.5
2.4
2.3
2.2
2.1
2
1.9
1.8
2.8
4.0 MHz
8.0 MHz
2.9
Frequency (MHz), no load, normalized to FRSEL = 0, (4 - 8 MHz).
IDD vs. Frequency (FRSEL = 0, 1, M)
3
3.1
3.2
3.3
3.4
3.5
3.6
3.7
VDD (volts)
Bandwidth % vs. VDD
Figure 2. Characteristic Curves
Document #: 38-07112 Rev. *E
Page 6 of 11
CY25811/12/14
SSCG Profiles
CY25811/12/14 SSCG products use a non-linear “optimized”
frequency profile as shown In Figure 3. The use of Cypress
proprietary “optimized” frequency profile maintains flat energy
distribution over the fundamental and higher order harmonics.
This results in additional EMI reduction in electronic systems.
Xin = 6.0 MHz
S1, S0 = 0
FRSEL = 0
Xin = 12.0 MHz
S1, S0 = 0
FRSEL = 1
SSCLK1 = 6.0 MHz
P/N = CY25811
SSCLK1 = 48.0 MHz
P/N = CY25814
Xin = 24.0 MHz
S1, S0 = 0
FRSEL = M
Xin = 24.0 MHz
S1, S0 = 0
FRSEL = M
SSCLK1 = 24.0 MHz
P/N = CY25811
SSCLK1 = 96.0 MHz
P/N = CY25814
Figure 3. Spread Spectrum Profiles (Frequency vs. Time)
Document #: 38-07112 Rev. *E
Page 7 of 11
CY25811/12/14
Application Schematic
VDD
C3
0.1 uF
7
C2
1
27 pF
Y1
25 MHz
8
C3
XIN
VDD
SSCLK
5
25 MHz (CY25811)
50 MHz (CY25812)
100 MHz (CY25814)
XOUT
27 pF
CY25811
CY25812
CY25814
N/C
6
S1
FRSEL
VSS
S0
3
4
2
Ordering Information
Part Number
CY25811SC
Package Type
8-pin SOIC
Product Flow
Commercial, 0° to 70°C
CY25811SCT
8-pin SOIC – Tape and Reel
Commercial, 0° to 70°C
CY25811SI
8-pin SOIC
Industrial, –40° to 85°C
CY25811SIT
8-pin SOIC – Tape and Reel
Industrial, –40° to 85°C
CY25811ZC
8-pin TSSOP
Commercial, 0° to 70°C
CY25811ZCT
8-pin TSSOP – Tape and Reel
Commercial, 0° to 70°C
CY25812SC
8-pin SOIC
Commercial, 0° to 70°C
CY25812SCT
8-pin SOIC – Tape and Reel
Commercial, 0° to 70°C
CY25812SI
8-pin SOIC
Industrial, –40° to 85°C
CY25812SIT
8-pin SOIC – Tape and Reel
Industrial, –40° to 85°C
CY25812ZC
8-pin TSSOP
Commercial, 0° to 70°C
CY25812ZCT
8-pin TSSOP – Tape and Reel
Commercial, 0° to 70°C
CY25814SC
8-pin SOIC
Commercial, 0° to 70°C
CY25814SCT
8-pin SOIC – Tape and Reel
Commercial, 0° to 70°C
CY25814SI
8-pin SOIC
Industrial, –40° to 85°C
CY25814SIT
8-pin SOIC – Tape and Reel
Industrial, –40° to 85°C
CY25814ZC
8-pin TSSOP
Commercial, 0° to 70°C
CY25814ZCT
8-pin TSSOP – Tape and Reel
Commercial, 0° to 70°C
Lead Free Devices
CY25811SXC
8-pin SOIC
Commercial, 0° to 70°C
CY25811SXCT
8-pin SOIC – Tape and Reel
Commercial, 0° to 70°C
CY25811SXI
8-pin SOIC
Industrial, –40° to 85°C
CY25811SXIT
8-pin SOIC – Tape and Reel
Industrial, –40° to 85°C
Document #: 38-07112 Rev. *E
Page 8 of 11
CY25811/12/14
Ordering Information (continued)
CY25811ZXC
8-pin TSSOP
Commercial, 0° to 70°C
CY25811ZXCT
8-pin TSSOP – Tape and Reel
Commercial, 0° to 70°C
CY25812SXC
8-pin SOIC
Commercial, 0° to 70°C
CY25812SXCT
8-pin SOIC – Tape and Reel
Commercial, 0° to 70°C
CY25812SXI
8-pin SOIC
Industrial, –40° to 85°C
CY25812SXIT
8-pin SOIC – Tape and Reel
Industrial, –40° to 85°C
CY25812ZXC
8-pin TSSOP
Commercial, 0° to 70°C
CY25812ZXCT
8-pin TSSOP – Tape and Reel
Commercial, 0° to 70°C
CY25814SXC
8-pin SOIC
Commercial, 0° to 70°C
CY25814SXCT
8-pin SOIC – Tape and Reel
Commercial, 0° to 70°C
CY25814SXI
8-pin SOIC
Industrial, –40° to 85°C
CY25814SXIT
8-pin SOIC – Tape and Reel
Industrial, –40° to 85°C
CY25814ZXC
8-pin TSSOP
Commercial, 0° to 70°C
CY25814ZXCT
8-pin TSSOP – Tape and Reel
Commercial, 0° to 70°C
Package Drawing and Dimensions
8-lead (150-Mil) SOIC S8
PIN 1 ID
4
1
1. DIMENSIONS IN INCHES[MM] MIN.
MAX.
2. PIN 1 ID IS OPTIONAL,
ROUND ON SINGLE LEADFRAME
RECTANGULAR ON MATRIX LEADFRAME
0.150[3.810]
0.157[3.987]
3. REFERENCE JEDEC MS-012
0.230[5.842]
0.244[6.197]
4. PACKAGE WEIGHT 0.07gms
PART #
S08.15 STANDARD PKG.
5
SZ08.15 LEAD FREE PKG.
8
0.189[4.800]
0.196[4.978]
0.010[0.254]
0.016[0.406]
SEATING PLANE
X 45°
0.061[1.549]
0.068[1.727]
0.004[0.102]
0.050[1.270]
BSC
0.004[0.102]
0.0098[0.249]
0°~8°
0.016[0.406]
0.035[0.889]
0.0075[0.190]
0.0098[0.249]
51-85066-*C
0.0138[0.350]
0.0192[0.487]
Document #: 38-07112 Rev. *E
Page 9 of 11
CY25811/12/14
8-Lead Thin Shrunk Small Outline Package (4.40 MM Body) Z8
PIN 1 ID
1
DIMENSIONS IN MM[INCHES] MIN.
MAX.
6.25[0.246]
6.50[0.256]
4.30[0.169]
4.50[0.177]
8
0.65[0.025]
BSC.
0.19[0.007]
0.30[0.012]
1.10[0.043] MAX.
0.25[0.010]
BSC
GAUGE
PLANE
0°-8°
0.076[0.003]
0.85[0.033]
0.95[0.037]
2.90[0.114]
3.10[0.122]
0.05[0.002]
0.15[0.006]
SEATING
PLANE
0.50[0.020]
0.70[0.027]
0.09[[0.003]
0.20[0.008]
51-85093-*A
Intel and Pentium are registered trademarks of Intel Corporation. All product and company names mentioned in this document
are the trademarks of their respective holders.
Document #: 38-07112 Rev. *E
Page 10 of 11
© 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.
CY25811/12/14
Document History Page
Document Title: CY25811/12/14 Spread Spectrum Clock Generator
Document Number: 38-07112
REV. ECN NO.
Issue
Date
Orig. of
Change
Description of Change
**
107516
06/14/02
NDP
Converted from IMI to Cypress
*A
108002
06/29/02
NDP
Deleted Junction Temp. in Absolute Maximum Ratings
*B
121578
01/29/03
RGL
Converted from Word to FrameMaker
Added 8-pin TSSOP package in Commercial Temp. only
Added an Industrial Temperature Range to all existing 8-pin SOIC packages
*C
125550
05/14/03
RGL
Changed IDD values from 19.6/22/27.2 to 25/30/35 in Commercial Grade DC Specs
table
Changed IDD values from 24/26.5/33 to 26/32/37 in Industrial grade DC Specs table
Changed TCCJ1/2 values from 675/260 to 800/450 in Commercial grade AC Specs table
Changed TCCJ1 value from 350 to 650 in Industrial grade AC Specs table
*D
131941
12/24/03
RGL
Removed automotive in the Applications section
Changed the Output Clock Duty Cycle (TDCOUT) from min. 45 and max. 55 to 40 and
60% respectively for both industrial and commercial grade
Changed the min. Input Low Voltage (VIL) from 0.15VDD to 0.13VDD
Removed preliminary from the industrial AC/DC Electrical Specifications table
*E
231057
See ECN
RGL
Added Lead Free Devices
Document #: 38-07112 Rev. *E
Page 11 of 11