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June 2005  
rev 0.4  
ASM2P2304NZ  
Four Output PCI-X and General Purpose Buffer  
Functional Description  
Features  
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
ꢀ
One input to four Output Buffer/Driver  
The ASM2P2304NZ is a low-cost buffer designed to  
distribute high-speed clocks for PCI-X and other  
applications. The device operates at 3.3V and outputs can  
run up to 140 MHz.  
General-purpose or PCI-X clock buffer  
Buffers all frequencies from DC to 140 MHz  
Output-to-output skew less than 100 pS  
Space-saving 8-pin TSSOP Package  
3.3V operation  
Table 1. Function Table.  
Inputs  
BUF_IN  
Outputs  
OE  
Output [1:4]  
L
H
L
L
L
H
H
L
L
L
H
H
Block Diagram  
Logic  
Control  
OE  
BUF_ IN  
OUTPUT 1  
OUTPUT 2  
OUTPUT 3  
OUTPUT 4  
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.  
June 2005  
ASM2P2304NZ  
rev 0.4  
Pin Configuration  
8 TSSOP  
Top V iew  
OUTPUT 4  
OUTPUT 3  
VDD  
8
1
BUF_IN  
OE  
7
2
ASM2P2304NZ  
6
5
OUTPUT 1  
GND  
3
4
OUTPUT 2  
Pin Description  
Pin Name  
Pin #  
Type  
Description  
1
2
3
4
5
6
7
8
BUF_IN  
OE  
I
Input clock. 5V Tolerant Input  
I
Input pin for Output Enable, active HIGH.  
Output 1  
GND  
O
P
O
P
O
O
Output 1  
Ground  
Output 2  
VDD  
Output 2  
3.3V Voltage Supply  
Output 3  
Output 3  
Output 4  
Output 4  
Four Output PCI-X and General Purpose Buffer  
2 of 8  
Notice: The information in this document is subject to change without notice.  
June 2005  
ASM2P2304NZ  
rev 0.4  
Absolute Maximum Ratings  
Parameter  
Min  
Max  
Unit  
Supply Voltage to Ground Potential  
DC Input Voltage (Except REF)  
DC Input Voltage (REF)  
-0.5  
-0.5  
-0.5  
-65  
7
VDD + 0.5  
7
V
V
V
Storage Temperature  
+150  
260  
°C  
°C  
°C  
Max. Soldering Temperature (10 sec)  
Junction Temperature  
150  
Static Discharge Voltage  
(As per JEDEC STD22- A114-B)  
2000  
V
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  
Parameter  
Description  
Min  
3.0  
-40  
-
Max  
3.6  
85  
Unit  
V
VDD  
TA  
Supply Voltage  
Operating Temperature (Ambient Temperature)  
Load Capacitance  
°C  
CL  
25  
pF  
CIN  
Input Capacitance  
-
7
pF  
BUF_IN,  
OUTPUT [1:4]  
Operating Frequency  
DC  
0.05  
140  
50  
MHz  
mS  
Power-up time for all VDD's to reach minimum specified  
Voltage (Power ramps must be monotonic)  
tPU  
Four Output PCI-X and General Purpose Buffer  
3 of 8  
Notice: The information in this document is subject to change without notice.  
June 2005  
rev 0.4  
ASM2P2304NZ  
Electrical Characteristics  
Parameter  
Description  
Test Conditions  
Min  
-
Max  
0.8  
-
Unit  
V
VIL  
VIH  
IIL  
Input LOW Voltage1  
Input HIGH Voltage1  
Input LOW Current  
Input HIGH Current  
2.0  
–5  
–5  
-
V
VIN = 0V  
VIN= VDD  
5
µA  
µA  
V
IIH  
5
IOL= 24 mA  
0.8  
0.55  
-
VOL  
Output LOW Voltage2  
IOL= 12 mA  
-
V
IOH= –24 mA  
2.0  
2.4  
-
V
VOH  
Output HIGH Voltage2  
Supply Current  
IOH= –12 mA  
-
V
IDD  
Unloaded outputs at 66.66 MHz  
25  
mA  
Switching Characteristics for Commercial and Industrial Temperature Devices3  
Parameter  
Name  
Duty Cycle2 = t2 ÷t1  
Rise Time2  
Description  
Measured at 1.5V  
Min  
Typ  
Max  
Unit  
%
tD  
t3  
t4  
t5  
40.0  
50.0  
60.0  
1.50  
1.50  
200  
Measured between 0.8V and 2.0V  
Measured between 0.8V and 2.0V  
All outputs equally loaded  
-
-
-
-
-
-
nS  
nS  
pS  
Fall Time2  
Output to Output Skew2  
Propagation Delay,  
t6  
BUF_IN Rising Edge to  
Measured at VDD/2  
2.5  
3.5  
5
nS  
OUTPUT Rising Edge2  
Note:  
1. BUF_IN input has a threshold voltage of VDD/2.  
2. Parameter is guaranteed by design and characterization. It is not 100% tested in production.  
3. All parameters specified with loaded outputs.  
Four Output PCI-X and General Purpose Buffer  
4 of 8  
Notice: The information in this document is subject to change without notice.  
June 2005  
ASM2P2304NZ  
rev 0.4  
Switching Waveforms  
Duty Cycle Timing  
All Outputs Rise/Fall Time  
Output-Output Skew  
Input-Output Propagation Delay  
Four Output PCI-X and General Purpose Buffer  
5 of 8  
Notice: The information in this document is subject to change without notice.  
June 2005  
ASM2P2304NZ  
rev 0.4  
Package Information  
8-lead Thin Shrunk Small Outline Package (4.40-MM Body)  
H
E
D
A2  
A
C
θ
e
A1  
L
B
Dimensions  
Symbol  
Inches  
Millimeters  
Min  
Max  
Min  
Max  
A
A1  
A2  
B
0.043  
0.006  
0.037  
0.012  
0.008  
0.122  
0.177  
1.10  
0.15  
0.95  
0.30  
0.20  
3.10  
4.50  
0.002  
0.033  
0.008  
0.004  
0.114  
0.169  
0.05  
0.85  
0.19  
0.09  
2.90  
4.30  
c
D
E
e
0.026 BSC  
0.252 BSC  
0.65 BSC  
6.40 BSC  
H
L
0.020  
0°  
0.028  
8°  
0.50  
0°  
0.70  
8°  
θ
Four Output PCI-X and General Purpose Buffer  
6 of 8  
Notice: The information in this document is subject to change without notice.  
June 2005  
ASM2P2304NZ  
rev 0.4  
Ordering Codes  
Part Number  
Marking  
2P2304NZF  
Package Type  
8-pin TSSOP, Pb Free  
Temperature  
Commercial  
Commercial  
Industrial  
ASM2P2304NZF-08-TT  
ASM2P2304NZF-08-TR  
ASM2I2304NZF-08-TT  
ASM2I2304NZF-08-TR  
ASM2P2304NZG-08-TT  
ASM2P2304NZG-08-TR  
ASM2I2304NZG-08-TT  
ASM2I2304NZG-08-TR  
2P2304NZF  
2I2304NZF  
2I2304NZF  
2P2304NZG  
2P2304NZG  
2I2304NZG  
2I2304NZG  
8-pin TSSOP - Tape and Reel, Pb Free  
8-pin TSSOP, Pb Free  
8-pin TSSOP - Tape and Reel, Pb Free  
8-pin TSSOP, Green  
Industrial  
Commercial  
Commercial  
Industrial  
8-pin TSSOP - Tape and Reel, Green  
8-pin TSSOP, Green  
8-pin TSSOP - Tape and Reel, Green  
Industrial  
Device Ordering Information  
A S M 2 P 2 3 0 4 N Z F - 0 8 - T R  
R = Tape & reel, T = Tube or Tray  
O = SOT  
U = MSOP  
E = TQFP  
L = LQFP  
U = MSOP  
P = PDIP  
S = SOIC  
T = TSSOP  
A = SSOP  
V = TVSOP  
B = BGA  
D = QSOP  
X = SC-70  
Q = QFN  
DEVICE PIN COUNT  
F = LEAD FREE AND RoHS COMPLIANT PART  
G = GREEN PACKAGE  
PART NUMBER  
X= Automotive  
(-40C to +125C) (-40C to +85C)  
I= Industrial  
P or n/c = Commercial  
(0C to +70C)  
1 = Reserved  
2 = Non PLL based  
3 = EMI Reduction  
4 = DDR support products  
5 = STD Zero Delay Buffer  
6 = Power Management  
7 = Power Management  
8 = Power Management  
9 = Hi Performance  
0 = Reserved  
ALLIANCE SEMICONDUCTOR MIXED SIGNAL PRODUCT  
Licensed under US patent #5,488,627, #6,646,463 and #5,631,920.  
Four Output PCI-X and General Purpose Buffer  
7 of 8  
Notice: The information in this document is subject to change without notice.  
June 2005  
rev 0.4  
ASM2P2304NZ  
Alliance Semiconductor Corporation  
2575, Augustine Drive,  
Santa Clara, CA 95054  
Tel# 408-855-4900  
Copyright © Alliance Semiconductor  
All Rights Reserved  
Part Number: ASM2P2304NZ  
Document Version: 0.4  
Fax: 408-855-4999  
www.alsc.com  
Note: This product utilizes US Patent # 6,646,463 Impedance Emulator Patent issued to Alliance Semiconductor, dated 11-11-2003  
© 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.  
Four Output PCI-X and General Purpose Buffer  
8 of 8  
Notice: The information in this document is subject to change without notice.