CY29948AI Cypress Semiconductor Corp, CY29948AI Datasheet

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CY29948AI

Manufacturer Part Number
CY29948AI
Description
IC CLK BUFF 1:12 200MHZ 32TQFP
Manufacturer
Cypress Semiconductor Corp
Type
Fanout Buffer (Distribution), Multiplexerr
Datasheet

Specifications of CY29948AI

Number Of Circuits
1
Ratio - Input:output
1:12
Differential - Input:output
Yes/No
Input
LVCMOS, LVPECL, LVTTL
Output
LVCMOS, LVTTL
Frequency - Max
200MHz
Voltage - Supply
2.375 V ~ 3.63 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
32-TQFP
Frequency-max
200MHz
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
CY29948AI
Manufacturer:
Cypress Semiconductor Corp
Quantity:
10 000
Cypress Semiconductor Corporation
Document #: 38-07288 Rev. *C
Features
• 2.5V or 3.3V operation
• 200-MHz clock support
• LVPECL or LVCMOS/LVTTL clock input
• LVCMOS-/LVTTL-compatible inputs
• 12 clock outputs: drive up to 24 clock lines
• Synchronous Output Enable
• Output three-state control
• 150 ps typical output-to-output skew
• Pin compatible with MPC948, MPC948L, MPC9448
• Available in Commercial and Industrial temp. range
• 32-pin TQFP package
Block Diagram
PECL_CLK#
PECL_CLK
TCLK_SEL
SYNC_OE
TCLK
TS#
0
1
VDD
VDDC
198 Champion Court
12
Q0-Q11
2.5V or 3.3V, 200-MHz, 1:12 Clock
Description
The CY29948 is a low-voltage 200-MHz clock distribution
buffer with the capability to select either a differential LVPECL
or a LVCMOS/LVTTL compatible input clock. The two clock
sources can be used to provide for a test clock as well as the
primary
LVCMOS/LVTTL compatible. The 12 outputs are LVCMOS or
LVTTL compatible and can drive 50Ω series or parallel termi-
nated transmission lines. For series terminated transmission
lines, each output can drive one or two traces giving the device
an effective fanout of 1:24. The outputs can also be
three-stated
output-to-output skews make the CY29948 an ideal clock
distribution buffer for nested clock trees in the most
demanding of synchronous systems.
The CY29948 also provides a synchronous output enable
input for enabling or disabling the output clocks. Since this
input is internally synchronized to the input clock, potential
output glitching or runt pulse generation is eliminated.
PECL_CLK#
Pin Configuration
PECL_CLK
TCLK_SEL
SYNC_OE
TCLK
VDD
system
VSS
TS#
San Jose
via
1
2
3
4
5
6
7
8
clock.
CY29948
,
the
CA 95134-1709
Distribution Buffer
three-state
All
Revised February 16, 2006
other
24
23
22
21
20
19
18
17
control
input
VSS
Q4
VDDC
Q5
VSS
Q6
VDDC
Q7
CY29948
408-943-2600
TS#.
inputs
Low
are
[+] Feedback

Related parts for CY29948AI

CY29948AI Summary of contents

Page 1

... PECL_CLK# 1 TCLK TCLK_SEL SYNC_OE TS# Cypress Semiconductor Corporation Document #: 38-07288 Rev. *C 2.5V or 3.3V, 200-MHz, 1:12 Clock Description The CY29948 is a low-voltage 200-MHz clock distribution buffer with the capability to select either a differential LVPECL or a LVCMOS/LVTTL compatible input clock. The two clock sources can be used to provide for a test clock as well as the ...

Page 2

Pin Description Pin Name PWR 3 PECL_CLK 4 PECL_CLK# 2 TCLK 9, 11, 13, 15, Q(11:0) VDDC 17, 19, 21, 23, 25, 27, 29 TCLK_SEL 5 SYNC_OE 6 TS# 10, 14, 18, 22, VDDC 26 ...

Page 3

Maximum Ratings Maximum Input Voltage Relative ............ V SS Maximum Input Voltage Relative ............. V DD Storage Temperature: ................................ –65° 150°C Operating Temperature: ................................ –40°C to +85°C Maximum ESD protection: .............................................. ...

Page 4

AC Parameters 3.3V ±10% or 2.5V ±5%, over the specified operating range. DD DDC Parameter Description [7] Fmax Input Frequency [7] Tpd PECL_CLK to Q Delay [7] TCLK to Q Delay [7] PECL_CLK to Q ...

Page 5

Figure 4. Propagation Delay (TPD) Test Reference LVCMOS_CLK Q Figure 5. LVCMOS Propagation Delay (TPD) Test Reference Document #: 38-07288 Rev ...

Page 6

... Ordering Information Part Number CY29948AI 32 Pin TQFP CY29948AIT 32 Pin TQFP - Tape and Reel CY29948AC 32 Pin TQFP CY29948ACT 32 Pin TQFP - Tape and Reel Lead-free CY29948AXI 32 Pin TQFP CY29948AXIT 32 Pin TQFP - Tape and Reel CY29948AXC 32 Pin TQFP CY29948AXCT 32 Pin TQFP - Tape and Reel Document #: 38-07288 Rev ...

Page 7

... Document #: 38-07288 Rev. *C © Cypress Semiconductor Corporation, 2006. 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 ...

Page 8

Revision History Document Title: CY29948 2.5V or 3.3V, 200-MHz, 1:12 Clock Distribution Buffer Document Number: 38-07288 Issue REV. ECN NO. Date ** 111099 02/13/02 *A 116782 08/14/02 *B 122880 12/22/02 *C 428221 See ECN Document #: 38-07288 Rev. *C Orig. ...

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