ALSC ASM5P23S09A-1-16-SR 3.3v spreadtrak zero delay buffer Datasheet

ASMP5P23S09A
ASMP5P23S05A
August 2004
rev 2.0
3.3V ‘SpreadTrak’ Zero Delay Buffer
General Features

133- MHz frequencies, and has higher drive than the -1
10 MHz to 133- MHz operating range, compatible
devices. All parts have on-chip PLLs that lock to an input
with CPU and PCI bus frequencies.
clock on the REF pin. The PLL feedback is on-chip and is

Zero input - output propagation delay.
obtained from the CLKOUT pad.

Multiple low-skew outputs.

Output-output skew less than 250 ps.
The ASM5P23S09A has two banks of four outputs each,

Device-device skew less than 700 ps.
which can be controlled by the Select inputs as shown in

One input drives 9 outputs, grouped as 4 + 4
the Select Input Decoding Table. If all the output clocks are
+ 1 (ASM5P23S09A).
not required, Bank B can be three-stated. The select input
One input drives 5 outputs (ASM5P23S05A).
also allows the input clock to be directly applied to the


Less than 200 ps cycle-to-cycle jitter is compatible
outputs for chip and system testing purposes.
with Pentium ® based systems.


Test Mode to bypass PLL (ASM5P23S09A only,
Multiple ASM5P23S09A and ASM5P23S05A devices can
refer Select Input Decoding Table).
accept the same input clock and distribute it. In this case
Available in 16-pin, 150-mil SOIC, 4.4 mm
the skew between the outputs of the two devices is
TSSOP,
guaranteed to be less than 700ps.
and
150-mil
SSOP
packages
(ASM5P23S09A) or in 8-pin, 150-mil SOIC
package (ASM5P23S05A).


3.3V
operation,
advanced
All outputs have less than 200 ps of cycle-to-cycle jitter.
0.35µ
CMOS
The input and output propagation delay is guaranteed to be
technology.
less than 250 ps, and the output to output skew is
‘SpreadTrak’.
guaranteed to be less than 250ps.
Functional Description
The ASM5P23S09A and the ASM5P23S05A are available
ASM5P23S09A is a versatile, 3.3V zero-delay buffer
designed to distribute high-speed clocks with Spread
Spectrum capability. It is available in a 16-pin package. The
ASM5P23S05A
is
the
eight-pin
version
of
the
in two different configurations, as shown in the ordering
information table. The ASM5P23SXXA-1 is the base part.
The ASM5P23SXXA-1H is the high drive version of the -1
and its rise and fall times are much faster than -1 part.
ASM5P23S09A. It accepts one reference input and drives
out five low-skew clocks.
The -1H version of the ASM5P23SXXA operates at up to
Block Diagram
REF
MUX
PLL
CLKOUT
PLL
REF
CLKOUT
CLKA1
CLKA2
CLK1
CLKA3
CLK2
CLKA4
CLK3
CLKB1
S2
Select Input
Decoding
CLK4
S1
CLKB2
CLKB3
CLKB4
ASM5P23S09A
ASM5P23S05A
Alliance Semiconductor
2575, Augustine Drive  Santa Clara, CA  Tel: 408.855.4900  Fax: 408.855.4999  www.alsc.com
Notice: The information in this document is subject to change without notice.
ASMP5P23S09A
ASMP5P23S05A
August 2004
rev 2.0
Select Input Decoding for ASM5P23S09A
S2
S1
Clock A1 - A4
Clock B1 - B4
CLKOUT 1
Output Source
PLL
Shut-Down
0
0
Three-state
Three-state
Driven
PLL
N
0
1
Driven
Three-state
Driven
PLL
N
1
0
Driven
Driven
Driven
Reference
Y
1
1
Driven
Driven
Driven
PLL
N
Notes:
1. This output is driven and has an internal feedback for the PLL. The load on this output can be adjusted to
change the skew between the reference and the output.
Zero Delay and Skew Control
SpreadTrak
All outputs should be uniformly loaded to achieve
Many systems being designed now utilize a technology
Zero Delay between input and output. Since the
called Spread Spectrum Frequency Timing Generation.
CLKOUT pin is the internal feedback to the PLL, its
ASM5P23S09A and ASM5P23S05A are designed so as
relative loading can adjust the input-output delay.
not to filter off the Spread Spectrum feature of the
Reference input, assuming it exists. When a zero delay
For applications requiring zero input-output delay, all
outputs, including CLKOUT, must be equally loaded.
Even if CLKOUT is not used, it must have a
capacitive load equal to that on other outputs, for
obtaining zero-input-output delay.
buffer is not designed to pass the Spread Spectrum feature
through, the result is a significant amount of tracking skew
which may cause problems in the systems requiring
synchronization.
3.3V ‘SpreadTrak” Zero Delay Buffer
Notice: The information in this document is subject to change without notice.
2 of 16
ASM5P23S09A
ASM5P23S05A
August 2003
rev 2.0
Pin Configuration
REF
1
16
CLKOUT
CLKA1
2
15
CLKA4
CLKA2
3
14
CLKA3
V
4
13
V
12
GND
DD
ASM5P23S09A
DD
GND
5
CLKB1
6
11
CLKB4
CLKB2
7
10
CLKB3
S2
8
9
REF
1
CLK2
2
ASM5P23S05A
S1
8
CLKOUT
7
CLK4
V
CLK3
CLK1
3
6
GND
4
5
DD
3.3V ‘SpreadTrak’ Zero Delay Buffer
Notice: The information in this document is subject to change without notice.
3 of 16
ASM5P23S09A
ASM5P23S05A
August 2003
rev 2.0
Pin Description for ASM5P23S09A
Pin #
Pin Name
1
REF
2
2
Input reference frequency, 5V tolerant input
3
Buffered clock output, bank A
3
Buffered clock output, bank A
CLKA1
3
CLKA2
4
VDD
5
GND
6
7
8
9
3.3V supply
Ground
3
Buffered clock output, bank B
3
Buffered clock output, bank B
CLKB1
CLKB2
S2
4
S1
4
Description
Select input, bit 2
Select input, bit 1
CLKB3
3
Buffered clock output, bank B
11
CLKB4
3
Buffered clock output, bank B
12
GND
13
VDD
10
14
15
16
Ground
3.3V supply
CLKA3
3
Buffered clock output, bank A
CLKA4
3
Buffered clock output, bank A
3
CLKOUT
Buffered output, internal feedback on this pin
Pin Description for ASM5P23S05A
Pin #
Pin Name
2
Description
1
REF
2
CLK2 3
Buffered clock output
3
3
CLK1
Buffered clock output
4
GND
5
CLK3
6
VDD
7
8
Input reference frequency, 5V-tolerant input
Ground
3
Buffered clock output
3.3V supply
3
CLK4
CLKOUT
Buffered clock output
3
Buffered clock output, internal feedback on this pin
Notes:
2. Weak pull-down.
3. Weak pull-down on all outputs.
4. Weak pull-up on these inputs.
3.3V ‘SpreadTrak’ Zero Delay Buffer
Notice: The information in this document is subject to change without notice.
4 of 16
ASM5P23S09A
ASM5P23S05A
August 2003
rev 2.0
Absolute Maximum Ratings
Parameter
Min
Max
Unit
Supply Voltage to Ground Potential
-0.5
+7.0
V
DC Input Voltage (Except REF)
-0.5
VDD + 0.5
V
DC Input Voltage (REF)
-0.5
7
V
Storage Temperature
-65
+150
°C
Max. Soldering Temperature (10 sec)
260
°C
Junction Temperature
150
°C
Static Discharge Voltage
2000
V
(per MIL-STD-883, Method 3015)
Note: These are stress ratings only and functional usage is not implied. Exposure to absolute maximum
ratings for prolonged periods can affect device reliability.
Operating Conditions for ASM5P23S05A and ASM5P23S09A - Commercial Temperature Devices
Parameter
Description
Min
Max
Unit
3.0
3.6
V
0
70
°C
VDD
Supply Voltage
TA
Operating Temperature (Ambient Temperature)
CL
Load Capacitance, below 100 MHz
30
pF
CL
Load Capacitance, from 100 MHz to 133 MHz
10
pF
CIN
Input Capacitance
7
pF
3.3V ‘SpreadTrak’ Zero Delay Buffer
Notice: The information in this document is subject to change without notice.
5 of 16
ASM5P23S09A
ASM5P23S05A
August 2003
rev 2.0
Electrical Characteristics for ASM5P23S05A and ASM5P23S09A - Commercial Temperature Devices
Parameter
VIL
Description
Input LOW Voltage
VIH
Input HIGH Voltage
IIL
Input LOW Current
IIH
Input HIGH Current
VOL
Test Conditions
Min
5
5
Output LOW Voltage
Max
Unit
0.8
V
2.0
6
V
VIN = 0V
50.0
µA
VIN = VDD
100.0
µA
0.4
V
IOL = 8mA (-1)
IOH = 12mA (-1H)
VOH
Output HIGH Voltage
6
IOL = -8mA (-1)
2.4
V
IOH = -12mA (-1H)
IDD
Supply Current
Unloaded outputs at 66.67 MHz,
TBD
mA
SEL inputs at VDD
Notes:
5. REF input has a threshold voltage of VDD/2
6. Parameter is guaranteed by design and characterization. Not 100% tested in production
7. S1 / S2 inputs are CMOS, TTL compatible inputs –
The input must toggle somewhere between 0.8 and 2.0. We guarantee the limits of 0.8 and 2.0, but can't guarantee anything tighter than
that. As Vdd moves higher the toggle point will move higher, but will always stay below 2.0V. As Vdd moves lower, the toggle point will
move lower, but always stay higher than 0.8V. What the 2.0V MIN Vih specification means is that you put 2.0V or a higher voltage into the
device, and you will have a logic HIGH. If you put 0.8V or a lower voltage into the device, you will have a logic LOW ( Vil spec = 0.8V max).
It will toggle someplace in between 0.8V and 2.0V, but we don't guarantee exactly where, and the exact point will change depending upon
conditions. Characterization shows we toggle at 1.1V and 1.5V (showing a little hysteresis), everything is perfect. We meet spec, plus have
~ 300mV noise immunity on the low end and ~500mV noise immunity on the high side. Under nominal conditions, with no hysteresis, most
devices will toggle at about 1.5V for both high and low.
Switching Characteristics for ASM5P23S05A-1 and ASM5P23S09A-1 - Commercial Temperature Devices7
Parameter
1/t1
Description
Test Conditions
Output Frequency
6
Min
Typ
Max
Unit
MHz
30-pF load
10
100
10-pF load
10
133.3 3
Duty Cycle = (t2 / t1) * 100
Measured at 1.4V, FOUT = 66.67 MHz
60.0
%
t3
Output Rise Time 6
Measured between 0.8V and 2.0V
2.50
ns
t4
Output Fall Time
Measured between 2.0V and 0.8V
2.50
ns
All outputs equally loaded
250
ps
6
6
t5
Output-to-output skew
t6
Delay, REF Rising Edge to
CLKOUT Rising Edge
40.0
50.0
Measured at VDD /2
0
±350
ps
0
700
ps
6
t7
Device-to-Device Skew 6
Measured at VDD/2 on the CLKOUT pins of the device
tJ
Cycle-to-cycle jitter 6
Measured at 66.67 MHz, loaded outputs
200
ps
Stable power supply, valid clock presented on
1.0
ms
tLOCK
PLL Lock Time
6
REF pin
Notes:
7. All parameters specified with loaded outputs.
3.3V ‘SpreadTrak’ Zero Delay Buffer
Notice: The information in this document is subject to change without notice.
6 of 16
ASM5P23S09A
ASM5P23S05A
August 2003
rev 2.0
3.3V ‘SpreadTrak’ Zero Delay Buffer
Notice: The information in this document is subject to change without notice.
7 of 16
ASM5P23S09A
ASM5P23S05A
August 2003
rev 2.0
7
Switching Characteristics for ASM5I23S05A-1H and ASM5I23S09A-1H - Industrial Temperature Devices
Parameter
1/t1
Description
Test Conditions
Output Frequency
Min
Typ
Max
Unit
MHz
30-pF load
10
100
10-pF load
10
133.33
6
Measured at 1.4 V, FOUT = 66.67 MHz
40.0
50.0
60.0
6
Duty Cycle = (t2 / t1) * 100
Measured at 1.4 V, FOUT < 50.0 MHz
45.0
50.0
55.0
t3
Output Rise Time 6
Measured between 0.8V and 2.0V
1.50
ns
t4
Output Fall Time 6
Measured between 2.0V and 0.8V
1.50
ns
t5
Output-to-output skew 6
All outputs equally loaded
250
ps
t6
Delay, REF Rising Edge to
Measured at VDD /2
0
± 350
ps
Measured at VDD/2 on the CLKOUT pins of
0
700
ps
Duty Cycle = (t2 / t1) * 100
%
CLKOUT Rising Edge 6
t7
Device-to-Device Skew 6
the device
t8
Output Slew Rate 6
Measured between 0.8V and 2.0V using
1
V/ns
Test Circuit #2
tJ
tLOCK
Cycle-to-cycle jitter 6
Measured at 66.67 MHz, loaded outputs
200
ps
PLL Lock Time 6
Stable power supply, valid clock pre sented
1.0
ms
on REF pin
Switching Waveforms
Duty Cycle Timing
t1
t2
1.4 V
1.4 V
1.4 V
All Outputs Rise/Fall Time
OUTPUT
2.0 V
0.8 V
2.0 V
0.8 V
t3
3.3 V
0V
t4
3.3V ‘SpreadTrak’ Zero Delay Buffer
Notice: The information in this document is subject to change without notice.
8 of 16
ASM5P23S09A
ASM5P23S05A
August 2003
rev 2.0
Output - Output Skew
1.4 V
OUTPUT
1.4 V
OUTPUT
t5
Input - Output Propagation Delay
V
DD
/2
INPUT
VDD /2
OUTPUT
t6
Device - Device Skew
V DD /2
CLKOUT, Device 1
V DD /2
CLKOUT, Device 2
t7
3.3V ‘SpreadTrak’ Zero Delay Buffer
Notice: The information in this document is subject to change without notice.
9 of 16
ASM5P23S09A
ASM5P23S05A
August 2003
rev 2.0
Test Circuits
Test Circuit #2
Test Circuit #1
V
V
DD
OUTPUTS
0.1 ÿF
CLK OUT
1k 
DD
OUTPUTS
0.1 ÿF
1k
C
LOAD
V
0.1 ÿF
V
DD
GND
GND
0.1 ÿF
10 pF
DD
GND
GND
For parameter t8 (output slew rate) on -1H devices
3.3V ‘SpreadTrak’ Zero Delay Buffer
Notice: The information in this document is subject to change without notice.
10 of 16
ASM5P23S09A
ASM5P23S05A
August 2003
rev 2.0
Package Information: 8-lead (150-mil) SOIC
H
E
D
A2
A
C

D
e
A1
L
B
Symbol Dimensions in inches
Dimensions in
millimeters
Min
Max
Min
Max
A
0.057
0.071
1.45
1.80
A1
0.004
0.010
0.10
0.25
A2
0.053
0.069
1.35
1.75
B
0.012
0.020
0.31
0.51
C
0.004
0.01
0.10
0.25
D
0.186
0.202
4.72
5.12
E
0.148
0.164
3.75
4.15
e
0.050 BSC
1.27 BSC
H
0.224
0.248
5.70
6.30
L
0.012
0.028
0.30
0.70

0°
8°
0°
8°
3.3V ‘SpreadTrak’ Zero Delay Buffer
Notice: The information in this document is subject to change without notice.
11 of 16
ASM5P23S09A
ASM5P23S05A
August 2003
rev 2.0
Package Information: 16-lead (150 Mil) Molded SOIC
PIN 1 ID
1
8
E
9
H
16
h
D
Seating Plane
A2
D
A
e
C

0.004
L
A1
B
DIMENSIONS
INCHES
MILLIMETERS
MIN
MAX
MIN
MAX
A
0.061
0.068
1.55
1.73
A1
0.004
0.0098
0.102
0.249
A2
0.055
0.061
1.40
1.55
B
0.013
0.019
0.33
0.49
C
0.0075
0.0098
0.191
0.249
D
0.386
0.393
9.80
9.98
E
0.150
0.157
3.81
3.99
e
0.050 BSC
1.27 BSC
H
0.230
0.244
5.84
6.20
h
0.010
0.016
0.25
0.41
L
0.016
0.035
0.41
0.89

0°
8°
0°
8°
3.3V ‘SpreadTrak’ Zero Delay Buffer
Notice: The information in this document is subject to change without notice.
12 of 16
ASM5P23S09A
ASM5P23S05A
August 2003
rev 2.0
Package Information: 16-lead Thin Shrunk Small Outline Package (4.40-MM Body)
1
8
PIN 1 ID
E
16
A
A2
e
A1
Seating Plane
C

D
9
H
B
L
D
DIMENSIONS (inches)
MIN
MAX
A
DIMENSIONS (mm)
MIN
MAX
0.043
1.10
A1
0.002
0.006
0.05
0.15
A2
0.003
0.37
0.85
0.95
B
0.007
0.012
0.19
0.30
C
0.004
0.008
0.09
0.20
D
0.193
2.008
4.90
5.10
E
0.169
0.177
4.30
4.50
e
0.026 BSC
0.65 BSC
H
0.246
0.256
6.25
6.50
L
0.020
0.028
0.50
0.70

0°
8°
0°
8°
3.3V ‘SpreadTrak’ Zero Delay Buffer
Notice: The information in this document is subject to change without notice.
13 of 16
ASM5P23S09A
ASM5P23S05A
August 2003
rev 2.0
Package Information: 16-lead (150-mil) SSOP
8
1
P I N 1 ID
E
H
16
9
D
A
e
D
A1
Seati ng Plane
C

0.004
L
B
DIMENSIONS (inches)
DIMENSIONS (millimeters)
MIN
MAX
MIN
MAX
A
0.049
0.065
1.245
1.651
A1
0.004
0.010
0.102
0.254
B
0.008
0.012
0.203
0.305
C
0.007
0.010
0.178
0.254
D
0.189
0.197
4.801
5.004
E
0.150
0.157
3.81
3.988
e
0.025 BSC
0.635 BSC
H
0.228
0.244
5.791
6.198
L
0.016
0.050
0.406
1.27

0°
8°
0°
8°
3.3V ‘SpreadTrak’ Zero Delay Buffer
Notice: The information in this document is subject to change without notice.
14 of 16
ASM5P23S09A
ASM5P23S05A
August 2003
rev 2.0
Ordering Codes
Ordering Code
Package Type
Operating Range
ASM5P23S09A-1-16-ST
16-pin 150-mil SOIC-TUBE
Commercial
ASM5I23S09A-1-16-ST
16-pin 150-mil SOIC-TUBE
Industrial
ASM5P23S09A-1-16-SR
16-pin 150-mil SOIC-TAPE & REEL
Commercial
ASM5I23S09A-1-16-SR
16-pin 150-mil SOIC-TAPE & REEL
Industrial
ASM5P23S09A-1-16-TT
16-pin 4.4-mm TSSOP-TUBE
Commercial
ASM5I23S09A-1-16-TT
16-pin 4.4-mm TSSOP-TUBE
Industrial
ASM5P23S09A-1-16-TR
16-pin 4.4-mm TSSOP-TAPE & REEL
Commercial
ASM5I23S09A-1-16-TR
16-pin 4.4-mm TSSOP-TAPE & REEL
Industrial
ASM5P23S09A-1H-16-ST
16-pin 150-mil SOIC-TUBE
Commercial
ASM5I23S09A-1H-16-ST
16-pin 150-mil SOIC-TUBE
Industrial
ASM5P23S09A-1H-16-SR
16-pin 150-mil SOIC-TAPE & REEL
Commercial
ASM5I23S09A-1H-16-SR
16-pin 150-mil SOIC-TAPE & REEL
Industrial
ASM5P23S09A-1H-16-TT
16-pin 4.4-mm TSSOP-TUBE
Commercial
ASM5I23S09A-1H-16-TT
16-pin 4.4-mm TSSOP-TUBE
Industrial
ASM5P23S09A-1H-16-TR
16-pin 4.4-mm TSSOP-TAPE & REEL
Commercial
ASM5I23S09A-1H-16-TR
16-pin 4.4-mm TSSOP-TAPE & REEL
Industrial
ASM5P23S05A-1-08-ST
8-pin 150-mil SOIC-TUBE
Commercial
ASM5I23S05A-1-08-ST
8-pin 150-mil SOIC-TUBE
Industrial
ASM5P23S05A-1-08-SR
8-pin 150-mil SOIC-TAPE & REEL
Commercial
ASM5I23S05A-1-08-SR
8-pin 150-mil SOIC-TAPE & REEL
Industrial
ASM5P23S05A-1-08-TT
8-pin 4.4-mm TSSOP-TUBE
Commercial
ASM5I23S05A-1-08-TT
8-pin 4.4-mm TSSOP-TUBE
Industrial
ASM5P23S05A-1-08-TR
8-pin 4.4-mm TSSOP-TAPE & REEL
Commercial
ASM5I23S05A-1-08-TR
8-pin 4.4-mm TSSOP-TAPE & REEL
Industrial
ASM5P23S05A-1H-08-ST
8-pin 150-mil SOIC-TUBE
Commercial
ASM5I23S05A-1H-08-ST
8-pin 150-mil SOIC-TUBE
Industrial
ASM5P23S05A-1H-08-SR
8-pin 150-mil SOIC-TAPE & REEL
Commercial
ASM5I23S05A-1H-08-SR
8-pin 150-mil SOIC-TAPE & REEL
Industrial
ASM5P23S05A-1H-08-TT
8-pin 4.4-mm TSSOP-TUBE
Commercial
ASM5I23S05A-1H-08-TT
8-pin 4.4-mm TSSOP-TUBE
Industrial
ASM5P23S05A-1H-08-TR
8-pin 4.4-mm TSSOP-TAPE & REEL
Commercial
ASM5I23S05A-1H-08-TR
8-pin 4.4-mm TSSOP-TAPE & REEL
Industrial
Licensed under US patent Nos 5,488,627 and 5,631,920.
Preliminary datasheet. Specification subject to change without notice.
3.3V ‘SpreadTrak’ Zero Delay Buffer
Notice: The information in this document is subject to change without notice.
15 of 16
ASM5P23S09A
ASM5P23S05A
August 2003
rev 2.0
Alliance Semiconductor Corporation
2595, Augustine Drive,
Santa Clara, CA 95054
Tel# 408-855-4900
Fax: 408-855-4999
www.alsc.com
Copyright © Alliance Semiconductor
All Rights Reserved
Part Number: ASM5P23S09A
ASM5P23S05A
Document Version: 2.0
8_30_2004
© Copyright 2003 Alliance Semiconductor Corporation. All rights reserved. Our three-point logo, our name and Intelliwatt are
trademarks or registered trademarks of Alliance. All other brand and product names may be the trademarks of their
respective companies. Alliance reserves the right to make changes to this document and its products at any time without
notice. Alliance assumes no responsibility for any errors that may appear in this document. The data contained herein
represents Alliance's best data and/or estimates at the time of issuance. Alliance reserves the right to change or correct this
data at any time, without notice. If the product described herein is under development, significant changes to these
specifications are possible. The information in this product data sheet is intended to be general descriptive information for
potential customers and users, and is not intended to operate as, or provide, any guarantee or warrantee to any user or
customer. Alliance does not assume any responsibility or liability arising out of the application or use of any product
described herein, and disclaims any express or implied warranties related to the sale and/or use of Alliance products
including liability or warranties related to fitness for a particular purpose, merchantability, or infringement of any intellectual
property rights, except as express agreed to in Alliance's Terms and Conditions of Sale (which are available from Alliance).
All sales of Alliance products are made exclusively according to Alliance's Terms and Conditions of Sale. The purchase of
products from Alliance does not convey a license under any patent rights, copyrights; mask works rights, trademarks, or any
other intellectual property rights of Alliance or third parties. Alliance does not authorize its products for use as critical
components in life-supporting systems where a malfunction or failure may reasonably be expected to result in significant
injury to the user, and the inclusion of Alliance products in such life-supporting systems implies that the manufacturer
assumes all risk of such use and agrees to indemnify Alliance against all claims arising from such use.
3.3V ‘SpreadTrak’ Zero Delay Buffer
Notice: The information in this document is subject to change without notice.
16 of 16