IMIB9946CAX Cypress Semiconductor Corp, IMIB9946CAX Datasheet

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IMIB9946CAX

Manufacturer Part Number
IMIB9946CAX
Description
Manufacturer
Cypress Semiconductor Corp
Datasheet

Specifications of IMIB9946CAX

Lead Free Status / RoHS Status
Supplier Unconfirmed
Cypress Semiconductor Corporation
Document #: 38-07077 Rev. *C
Product Features
• 160-MHz Clock Support
• LVCMOS/LVTTL Compatible Inputs
• 10 Clock Outputs: Drive up to 20 Clock Lines
• 1X or 1/2X Configurable Outputs
• Output Three-state Control
• 250 ps Maximum Output-to-Output Skew
• Pin Compatible with MPC946
• Industrial Temp. Range: –40°C to +85°C
• 32-Pin TQFP Package
Block Diagram
TCLK_SEL
MR/OE#
DSELA
DSELB
DSELC
TCLK1
TCLK0
0
1
R
/1
/2
3.3V, 160-MHz, 1:10 Clock Distribution Buffer
0
1
0
1
0
1
3901 North First Street
3
3
4
QA0:2
QB0:2
QC0:3
Pin Configuration
Description
The B9946 is a low-voltage clock distribution buffer with the
capability to select one of two LVCMOS/LVTTL compatible in-
put clocks. These clock sources can be used to provide for test
clocks as well as the primary system clocks. All other control
inputs are LVCMOS/LVTTL compatible. The 10 outputs are
3.3V LVCMOS or LVTTL compatible and can drive two series
terminated 50
B9946 has an effective fanout of 1:20.
The B9946 is capable of generating 1X and 1/2X signals from
a 1X source. These signals are generated and retimed inter-
nally to ensure minimal skew between the 1X and 1/2X sig-
nals. SEL(A:C) inputs allow flexibility in selecting the ratio of
1X to1/2X outputs.
The B9946 outputs can also be three-stated via MR/OE# in-
put. When MR/OE# is set HIGH, it resets the internal flip-flops
and three-states the outputs.
TCLK_SEL
DSELA
DSELB
DSELC
TCLK0
TCLK1
VDD
VSS
San Jose
1
2
3
4
5
6
7
8
transmission lines. With this capability the
B9946
CA 95134
Revised December 22, 2002
24
23
22
21
20
19
18
17
VSS
QB0
VDDC
QB1
VSS
QB2
VDDC
VDDC
408-943-2600
B9946
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IMIB9946CAX Summary of contents

Page 1

... DSELB 0 1 DSELC MR/OE# Cypress Semiconductor Corporation Document #: 38-07077 Rev. *C Description The B9946 is a low-voltage clock distribution buffer with the capability to select one of two LVCMOS/LVTTL compatible in- put clocks. These clock sources can be used to provide for test clocks as well as the primary system clocks. All other control inputs are LVCMOS/LVTTL compatible ...

Page 2

Pin Description Pin Name 3, 4 TCLK(0,1) 26, 28, 30 QA(2:0) 19, 21, 23 QB(2:0) 10, 12, 14, 16 QC(0: DSEL(A:C) 1 TCLK_SEL 32 MR/OE# 9, 13, 17, 18, 22, VDDC 25 VDD 8, ...

Page 3

Maximum Ratings Maximum Input Voltage Relative ............ V SS Maximum Input Voltage Relative to V :............. V DD Storage Temperature: ................................–65° 150°C Operating Temperature: ................................ –40°C to +85°C Maximum ESD Protection.............................................. 2 KV Maximum ...

Page 4

... Document #: 38-07077 Rev. *C © Cypress Semiconductor Corporation, 2001. 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 Semiconductor product. Nor does it convey or imply any license under patent or other rights. Cypress Semiconductor does not authorize its products for use as critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user ...

Page 5

Document Title: B9946 3.3V, 160-MHz, 1:10 Clock Distribution Buffer Document Number: 38-07077 Issue REV. ECN NO. Date ** 107113 06/06/01 *A 108057 07/03/01 *B 109803 01/31/02 *C 122762 12/22/02 Document #: 38-07077 Rev. *C Orig. of Change Description of Change ...

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