PI6C180BVE Pericom Semiconductor, PI6C180BVE Datasheet

IC 1:18 CLOCK BUFFER 48-SSOP

PI6C180BVE

Manufacturer Part Number
PI6C180BVE
Description
IC 1:18 CLOCK BUFFER 48-SSOP
Manufacturer
Pericom Semiconductor
Type
Fanout Buffer (Distribution)r
Datasheet

Specifications of PI6C180BVE

Number Of Circuits
1
Ratio - Input:output
1:18
Differential - Input:output
No/No
Input
TTL
Output
TTL
Frequency - Max
140MHz
Voltage - Supply
3.135 V ~ 3.465 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
48-SSOP
Frequency-max
140MHz
Number Of Outputs
18
Operating Supply Voltage (max)
3.465V
Operating Temp Range
0C to 70C
Propagation Delay Time
8ns
Operating Supply Voltage (min)
3.135V
Mounting
Surface Mount
Pin Count
48
Operating Supply Voltage (typ)
3.3V
Package Type
SSOP
Duty Cycle
55%
Operating Temperature Classification
Commercial
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Features
• High-speed, to 140 MHz
• Low-noise non-inverting 1-18 buffer
• Supports up to four SDRAM DIMMs
• Low skew (< 250ps) between any two output clocks
• I
• Multiple V
• 3.3V power supply voltage
• Separate Hi-Z pin for testing
• Packaging: (Pb-free and Green)
Block Diagram
— 48-pin SSOP (V48)
2
C Serial Configuration interface
BUF_IN
06-0109
DD
SCLOCK
, V
SDATA
SS
OE
pins for noise reduction
I 2 C
I/O
SDRAM0
SDRAM1
SDRAM2
SDRAM3
SDRAM17
1
Description
The PI6C180B, a high-speed low-noise 1-18 noninverting buffer
designed for 140 MHz SDRAM clock buffer applications.
At power up all SDRAM output are enabled and active. The I
Serial control may be used to individually activate/deactivate any
of the 18 output drivers.
The output enable (OE) pin may be pulled low to put all outputs
in a Hi-Z state.
Note:
Purchase of I
use them in an I
Pin Configuration
SDRAM16
SDRAM0
SDRAM1
SDRAM2
SDRAM3
SDRAM4
SDRAM5
SDRAM6
SDRAM7
2
BUF_IN
C components from Pericom conveys a license to
VDDIIC
SDATA
2
V
V
V
V
V
V
V
V
V
V
C system as defined by Philips.
DD1
DD3
DD4
DD0
SS0
SS1
DD2
SS3
SS2
SS4
NC
NC
Precision 1-18 Clock Buffer
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
NC
NC
V
SDRAM15
SDRAM14
V
V
SDRAM13
SDRAM12
V
OE
V
SDRAM11
SDRAM10
V
V
SDRAM9
SDRAM8
V
V
SDRAM17
V
V
SCLOCK
DD9
SS9
DD8
SS8
DD7
SS7
DD6
SS6
DD5
SS5
SSIIC
PI6C180B
PS8468B
06/20/06
2
C

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PI6C180BVE Summary of contents

Page 1

Features • High-speed, to 140 MHz • Low-noise non-inverting 1-18 buffer • Supports up to four SDRAM DIMMs • Low skew (< 250ps) between any two output clocks 2 • Serial Configuration interface • Multiple ...

Page 2

Pin Description Pin Symbol SDRAM[0-3] 13, 14, 17, 18 SDRAM[4-7] 31, 32, 35, 36 SDRAM[8-11] 40, 41, 44, 45 SDRAM[12-15] 21, 28 SDRAM[16-17] 11 Buf_IN DATA 25 S CLOCK 3, 7, 12, ...

Page 3

I C Control 2 The I C interface permits individual enable/disable of each clock output and test mode enable. The PI6C180B is a slave receiver device. It can not be read back. Sub addressing is not supported. All ...

Page 4

DC Operating Specifications Symbol Parameter Input Voltage V Input High voltage IH V Input Low voltage IL I Input leakage current IL V [0-9] = 3.3V ± Output High voltage OH V Output Low voltage OL C Output ...

Page 5

Clocking Interface (TTL) Input Waveform Output Waveform Minimum and Maximum Expected Capacitive Loads Min. Max. Clock Units Load Load SDRAM Notes: 1. Maximum rise/fall times are guaranteed at maximum specified load. 2. Minimum rise/fall times are ...

Page 6

PCB Layout Suggestion C1 VDD VSS C2 VDD VSS C3 VDD VSS C4 VDD VSS C5 VDD VSS C6 VDD Note: 1. This is only a suggested layout. There may be alternate solutions depending on actual PCB design and layout. ...

Page 7

... Ordering Information Ordering Code PI6C180BVE Notes: 1. Thermal characteristics can be found on the company web site at www.pericom.com/packaging/ 2. ...

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