CY2PD817 Cypress Semiconductor, CY2PD817 Datasheet

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CY2PD817

Manufacturer Part Number
CY2PD817
Description
PECL/CMOS Buffer
Manufacturer
Cypress Semiconductor
Datasheet

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Part Number
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Quantity
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Part Number:
CY2PD817ZC
Manufacturer:
CYPRESS
Quantity:
9
Cypress Semiconductor Corporation
Document #: 38-07574 Rev. **
Features
• DC to 320-MHz operation
• 50-ps output-output skew
• 30-ps cycle-cycle jitter
• 2.5V power supply
• LVPECL input @ 320-MHz Operation
• One LVPECL output @ 320-MHz Operation
• Four LVCMOS/LVTTL outputs @ 250 MHz/160 MHz
• Two LVCMOS/LVTTL outputs @ 250 MHz/80 MHz
• 45% to 55% output duty cycle
• Output divider control
• Output enable/disable control
• Operating temperature range: 0°C to +85°C
• 24-pin TSSOP
Block Diagram
PCLKI
PCLKI
CLRDIV
OE
÷ 4, ÷ 1
÷ 2, ÷ 1
320-MHz 1:7 PECL to PECL/CMOS Buffer
3901 North First Street
QA[0:1]
PCLKO
QB[0:3]
PCLKO
Description
The CY2PD817 is a low-voltage LVPECL-to-LVPECL and
LVCMOS fanout buffer designed for servers, data communi-
cations, and clock management.
The CY2PD817 is ideal for applications requiring mixed differ-
ential and single-ended clock distribution. This device accepts
an LVPECL input reference clock and provides one LVPECL
and six LVCMOS/LVTTL output clocks. The outputs are parti-
tioned into three banks of one, two, and four outputs. The
LVPECL output is a buffered copy of the input clock while the
LVCMOS outputs are divided by 1, 2, and 4. When CLRDIV is
set HIGH, the output dividers are set to 1. In this mode, the
maximum input frequency is limited to 250 MHz.
When OE is set HIGH, the outputs are disabled in a High-Z
state.
Pin Configuration
San Jose
CLRDIV
PCLKO
PCLKO
PCLKI
PCLKI
VDD
VDD
VSS
VSS
VSS
VDD
OE
,
1
2
3
4
5
6
7
8
9
10
11
12
CA 95134
24 TSSOP
Revised August 28, 2003
24
23
22
21
20
19
18
17
16
15
14
13
CY2PD817
VDD
QA0
QA1
VDD
QB0
QB1
VDD
QB2
QB3
VSS
VSS
VSS
408-943-2600

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CY2PD817 Summary of contents

Page 1

... The CY2PD817 is a low-voltage LVPECL-to-LVPECL and LVCMOS fanout buffer designed for servers, data communi- cations, and clock management. The CY2PD817 is ideal for applications requiring mixed differ- ential and single-ended clock distribution. This device accepts an LVPECL input reference clock and provides one LVPECL and six LVCMOS/LVTTL output clocks ...

Page 2

... Functional Ripple Frequency < 100 kHz Non-functional Functional Functional Functional Functional Manufacturing test CY2PD817 Description LVPECL reference clock input LVPECL reference clock input LVPECL clock output LVPECL clock output Bank A, LVCMOS clock outputs Bank B, LVCMOS clock outputs Clear divider input. See functional Table 1 Output enable/disable input ...

Page 3

... BankA to BankB Skew PECL Output to all Banks Skew PCLKI to PCLKO PCLKI to QA/QB PCLKI to PCLKO PCLKI to QA/ any output OE to any output LVPECL output LVTTL output . TT . Parameters are guaranteed by characterization and are not 100% tested. TT CY2PD817 Min. Typ. Max. 250 – V – 1.3 DD 1.0 – V – 0.6 DD – ...

Page 4

... Differential ohm Pulse ohm Generator ohm ohm VTT ohm T VTT Figure 1. CY2PD817 Test Reference PECL_CLK V CMR PECL_CLK Q Figure 2. Propagation Delay (TPD) Test Reference Figure 3. Output Duty Cycle Figure 4. Output-Output Skew CY2PD817 ohm ohm ...

Page 5

... 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 Figure 5. Output Enable/Disable Time Package Type 24-pin TSSOP 24-pin TSSOP – Tape and Reel CY2PD817 Product Flow Commercial, 0°C to +85°C 51-85119-** Page ...

Page 6

... Document History Page Document Title: CY2PD817 320-MHz 1:7 PECL to PECL/CMOS Buffer Document Number: 38-07574 REV. ECN NO. Issue Date ** 129024 08/29/03 Document #: 38-07574 Rev. ** Orig. of Change RGL New Data Sheet CY2PD817 Description of Change Page ...

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