CY26049-5 Cypress Semiconductor Corp., CY26049-5 Datasheet

no-image

CY26049-5

Manufacturer Part Number
CY26049-5
Description
Telecom Equipment Clock
Manufacturer
Cypress Semiconductor Corp.
Datasheet
Cypress Semiconductor Corporation
Document #: 38-07485 Rev. **
Logic Block Diagram
• Fully integrated phase-locked loop (PLL)
• FailSafe
• PLL driven by a crystal oscillator.
• 76.8-MHz output from 19.2-MHz input.
• Low-jitter, high-accuracy outputs
• 3.3 V ± 5% operation
• 16-lead TSSOP
in p u t re fe re n c e c lo c k
output
(1 9 .2 M H z)
IC L K
Features
F A IL S A F E
IC L K d e te c te d
S AF E
C O N T RO L
TM
3901 North First Street
e xte rn a l p u lla b le c rys ta l
ADVANCE
INFORMATION
X IN
C O N T RO L L E D
O S C IL L A T O R
(1 9 .2 M H z)
C R Y S T A L
D IG IT A L
Communications Clock Generator
X O U T
• Integrated high-performance PLL tailored for telecom-
• DCXO maintains continuous operation should the input
• Zero-ppm error for all output frequencies
• Compatibility across industry standard design
• When reference is off, DCXO maintains clock outputs
• Glitch-free transition simplifies system design
• Works with commonly available, low-cost 19.2-MHz
• Industry standard package with 6.4 x 5.0 mm footprint
munications frequency synthesis eliminates the need
for external loop filter components
and SAFE pin indicates FailSafe conditions
reference clock fail
crystal
platforms
and a height profile of just 1.1 mm
L O C K E D
P H A S E
L O O P
San Jose
O U T P UT
D IV ID E R
Benefits
CA 95134
Revised October 31, 2002
C L K A
7 6 .8 M H z
FailSafe™
CY26049-5
408-943-2600

Related parts for CY26049-5

CY26049-5 Summary of contents

Page 1

... • 3901 North First Street • San Jose CY26049-5 FailSafe™ Benefits • CA 95134 • ...

Page 2

... In the event of a reference clock failure the DCXO maintains the last frequency of the reference clock. The unique feature of the CY26049-5 is that the DCXO is in fact the primary clocking source. When the reference clock is restored, the DCXO automatically resynchronizes to the reference. The status of the reference clock input, as detected by the CY26049-5, is reported by the SAFE pin ...

Page 3

... Semiconductor products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress Semiconductor against all charges. ADVANCE INFORMATION Name Package Type 16-lead TSSOP 16-lead TSSOP—Tape and Reel CY26049-5 Min. Typ. Max. Unit 14 pF 250 ...

Page 4

... Document History Page Document Title: CY26049-5 FailSafe™ Communications Clock Generator Document Number: 38-07485 Issue REV. ECN NO. Date ** 119591 10/31/02 Document #: 38-07485 Rev. ** ADVANCE INFORMATION Orig. of Change CKN New Data Sheet CY26049-5 Description of Change Page ...

Related keywords