june 2005 asm2p2304nz rev 0.4 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. four output pci-x and general purpose buffer features one input to four output buffer/driver 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 functional description 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. table 1. function table. inputs outputs buf_in oe output [1:4] l h l h l l h h l l l h block diagram logic control output 1 output 2 output 3 output 4 oe buf_ in
june 2005 asm2p2304nz rev 0.4 four output pci-x and general purpose buffer 2 of 8 notice: the information in this document is subject to change without notice. pin configuration pin description pin # pin name type description 1 buf_in i input clock. 5v tolerant input 2 oe i input pin for output enable, active high. 3 output 1 o output 1 4 gnd p ground 5 output 2 o output 2 6 v dd p 3.3v voltage supply 7 output 3 o output 3 8 output 4 o output 4 o utput 1 1 2 3 4 8 7 6 5 buf_in oe output 4 o utput 3 output 2 gnd v d d 8 tssop top v iew asm 2 p2304nz
june 2005 asm2p2304nz rev 0.4 four output pci-x and general purpose buffer 3 of 8 notice: the information in this document is subject to change without notice. absolute maximum ratings parameter min max unit supply voltage to ground potential -0.5 7 v dc input voltage (except ref) -0.5 v dd + 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 (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 max unit v dd supply voltage 3.0 3.6 v t a operating temperature (ambient temperature) -40 85 c c l load capacitance - 25 pf c in input capacitance - 7 pf buf_in, output [1:4] operating frequency dc 140 mhz t pu power-up time for all v dd 's to reach minimum specified voltage (power ramps must be monotonic) 0.05 50 ms
june 2005 asm2p2304nz rev 0.4 four output pci-x and general purpose buffer 4 of 8 notice: the information in this document is subject to change without notice. electrical characteristics parameter description test conditions min max unit v il input low voltage 1 - 0.8 v v ih input high voltage 1 2.0 - v i il input low current v in = 0v ?5 5 k a i ih input high current v in = v dd ?5 5 k a i ol = 24 ma - 0.8 v v ol output low voltage 2 i ol = 12 ma - 0.55 v i oh = ?24 ma 2.0 - v v oh output high voltage 2 i oh = ?12 ma 2.4 - v i dd supply current unloaded outputs at 66.66 mhz - 25 ma switching characteristics for commercial and industrial temperature devices 3 parameter name description min typ max unit t d duty cycle 2 = t 2 t 1 measured at 1.5v 40.0 50.0 60.0 % t 3 rise time 2 measured between 0.8v and 2.0v - - 1.50 ns t 4 fall time 2 measured between 0.8v and 2.0v - - 1.50 ns t 5 output to output skew 2 all outputs equally loaded - - 200 ps t 6 propagation delay, buf_in rising edge to output rising edge 2 measured at v dd /2 2.5 3.5 5 ns note: 1. buf_in input has a threshold voltage of v dd /2. 2. parameter is guaranteed by design and characterization. it is not 100% tested in production. 3. all parameters specified with loaded outputs.
june 2005 asm2p2304nz rev 0.4 four output pci-x and general purpose buffer 5 of 8 notice: the information in this document is subject to change without notice. switching waveforms duty cycle timing all outputs rise/fall time output-output skew input-output propagation delay
june 2005 asm2p2304nz rev 0.4 four output pci-x and general purpose buffer 6 of 8 notice: the information in this document is subject to change without notice. e h a a1 a2 d b c l e package information 8-lead thin shrunk small outline package (4.40-mm body) dimensions inches millimeters symbol min max min max a 0.043 1.10 a1 0.002 0.006 0.05 0.15 a2 0.033 0.037 0.85 0.95 b 0.008 0.012 0.19 0.30 c 0.004 0.008 0.09 0.20 d 0.114 0.122 2.90 3.10 e 0.169 0.177 4.30 4.50 e 0.026 bsc 0.65 bsc h 0.252 bsc 6.40 bsc l 0.020 0.028 0.50 0.70 o 0 8 0 8
june 2005 asm2p2304nz rev 0.4 four output pci-x and general purpose buffer 7 of 8 notice: the information in this document is subject to change without notice. ordering codes part number marking package type temperature asm2p2304nzf-08-tt 2p2304nzf 8-pin tssop, pb free commercial asm2p2304nzf-08-tr 2p2304nzf 8-pin tssop - tape and reel, pb free commercial ASM2I2304NZF-08-TT 2i2304nzf 8-pin tssop, pb free industrial asm2i2304nzf-08-tr 2i2304nzf 8-pin tssop - tape and reel, pb free industrial asm2p2304nzg-08-tt 2p2304nzg 8-pin tssop, green commercial asm2p2304nzg-08-tr 2p2304nzg 8-pin tssop - tape and reel, green commercial asm2i2304nzg-08-tt 2i2304nzg 8-pin tssop, green industrial asm2i2304nzg-08-tr 2i2304nzg 8-pin tssop - tape and reel, green industrial device ordering information asm2p2304nz f-08-tr licensed under us patent #5,488,627, #6,646,463 and #5,631,920. o = sot u = msop s = soic e = tqfp t = tssop l = lqfp a = ssop u = msop v = tvsop p = pdip b = bga d = qsop q = qfn x = sc - 70 device pin count x= automotive i= industrial p or n/c = commercial (-40c to +125c) (-40c to +85c) (0c to +70c) 1 = reserved 6 = power management 2 = non pll based 7 = power management 3 = emi reduction 8 = power management 4 = ddr support products 9 = hi performance 5 = std zero delay buffer 0 = reserved alliance semiconductor mixed signal product part number f = lead free and rohs compliant part g = green package r = tape & reel, t = tube or tray
june 2005 asm2p2304nz rev 0.4 four output pci-x and general purpose buffer 8 of 8 notice: the information in this document is subject to change without notice. ? 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. alliance semiconductor corporation 2575, 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: asm2p2304nz document version: 0.4 note: this product utilizes us patent # 6,646,463 impedance emulator patent issued to alliance semiconductor, dated 11-11-2003
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