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CY26121ZC-21 Datasheet(PDF) 2 Page - Cypress Semiconductor

Part # CY26121ZC-21
Description  PacketClock Spread Spectrum Clock Generator
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Manufacturer  CYPRESS [Cypress Semiconductor]
Direct Link  http://www.cypress.com
Logo CYPRESS - Cypress Semiconductor

CY26121ZC-21 Datasheet(HTML) 2 Page - Cypress Semiconductor

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CY26121
Document #: 38-07350 Rev. **
Page 2 of 6
Absolute Maximum Conditions
Supply Voltage (VDD, AVDD, VDDL) ...................–0.5 to +7.0V
DC Input Voltage ...................................... –0.5V to VDD + 0.5
Storage Temperature
(Non-condensing) ....................................... –55
°C to +125°C
Junction Temperature ................................ –40
°C to +125°C
Data Retention @ Tj = 125
°C................................> 10 years
Package Power Dissipation...................................... 350 mW
Static Discharge Voltage.......................................... > 2000V
(per MIL-STD-883, Method 3015)
(Above which the useful life may be impaired. For user guide-
lines, not tested.)
Pin Description
Name
Pin Number
Description
XIN
1
Reference input or crystal input
VDD
2
3.3V voltage supply
AVDD
3
3.3V analog voltage
CLKSEL
4 (orig., -11,-3,-31)
0 = 66.66MHz out, 1 = 33.33 MHz out. Weak pull-up.
CLKSEL
4 (-2, -21)
0 = 33.33MHz out, 1 = 25 MHz out. Weak pull-up.
AVSS
5
Analog ground
VSSL
6
CLK ground
CLK(A:D)
7,8,9,12
Clock outputs at VDDL level
SSON
10
Spread Spectrum enable pin 0 = SS off; 1 = SS on. Weak pull-up.
VDDL
11
3.3V clock voltage supply
VSS
13
Ground
REF
14
Reference output at VDD level
NC
15
No Connect
XOUT[1]
16
Crystal Output
Recommended Operating Conditions
Parameter
Description
Min.
Typ.
Max.
Unit
VDD, AVDD
Supply voltage
3.135
3.30
3.465
V
VDDL
Supply voltage for CLK (A-D)
3.135
3.30
3.465
V
TA
Ambient temperature (commercial temp. grade)
0
70
° C
TA
Ambient Temperature (industrial temp grade)
-40
85
° C
CLOAD
Max. output load capacitance
15
pF
Fref
Reference frequency
25
MHz
Crystal Specification[2]
Parameter
Name
Min.
Typ
Max.
Unit
CRload
Crystal load capacitance (original, -2, -3)
6
pF
CRload
Crystal load capacitance (-11,-21,-31)
15
pF
ESR
Equivalent series resistance
50
Notes:
1.
Float XOUT if XIN is externally driven.
2.
A fundamental parallel resonant crystal must be used


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