CY25483SXC datasheet(7/14 Pages) CYPRESS

Part #	CY25483SXC

Description	Three PLL Programmable Clock Generator with Spread Spectrum

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Manufacturer	CYPRESS [Cypress Semiconductor]

Direct Link	http://www.cypress.com

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7 / 14 page

CY25403/CY25423/CY25483

Document #: 001-12564 Rev. *F

Page 7 of 14

AC Electrical Specifications

Parameter

Description

Conditions

Min

Typ

Max

Unit

FIN (crystal) Crystal frequency, XIN

–

8

–

48

MH

z

FIN (clock)

Input clock frequency (EXCLKIN)

–

8

–

166

MH

z

FCLK

Output clock frequency

–

3

–

166

MH

z

DC

Output duty cycle, all clocks except ref

out

Duty Cycle is defined in Figure 3 on page 8;

t1/t2, measured at 50% of VDD

45

50

55

%

DC

Ref out duty cycle

Ref In Min 45%, Max 55%

40

–

60

%

TRF1

[3]

Output rise/fall time

Measured from 20% to 80% of VDD, as

shown in Figure 4 on page 8, CL = 15 pF,

drive strength [00]

–6.8

–

ns

TRF2

[3]

Output rise/fall time

Measured from 20% to 80% of VDD, as

shown in Figure 4 on page 8, CL = 15 pF,

drive strength [01]

–3.4

–

ns

TRF3

[3]

Output rise/fall time

Measured from 20% to 80% of VDD, as

shown in Figure 4 on page 8, CL = 15 pF,

drive strength [10]

–2.0

–

ns

TRF4

[3]

Output rise/fall time

Measured from 20% to 80% of VDD, as

shown in Figure 4 on page 8, CL = 15 pF,

drive strength [11]

–1.0

–

ns

TCCJ

[3, 4]

Cycle-to-cycle jitter (peak)

Configuration dependent. See

Table Configuration Example for C-C Jitter

–

100

–

ps

TLOCK

[3]

PLL lock time

Measured from 90% of the applied power

supply level

–1

3

ms

Configuration Example for C-C Jitter

Ref. Frequency

(MHz)

CLK1 Output

CLK2 Output

CLK3 Output

Freq. (MHz)

C-C Jitter Typ

(ps)

Freq. (MHz)

C-C Jitter Typ

(ps)

Freq. (MHz)

C-C Jitter Typ

(ps)

14.3181

8.0

134

166

103

48

92

19.2

74.25

99

166

94

8

91

27

48

67

27

109

166

103

48

93

27

123

166

137

Recommended Crystal Specification for SMD Package

Parameter

Description

Range 1 Range 2 Range 3 Unit

Fmin

Minimum frequency

8

14

28

MHz

Fmax

Maximum frequency

14

28

48

MHz

R1

Motional resistance (ESR)

135

50

30



C0

Shunt capacitance

4

2

pF

CL

Parallel load capacitance

18

14

12

pF

DL(max)

Maximum crystal drive level

300

µW

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