1 commercial and industrial temperature ranges idt2309nz nine output 3.3v clock buffer february 2003 2003 integrated device technology, inc. dsc 6189/10 c commercial and industrial temperature ranges the idt logo is a registered trademark of integrated device technology, inc. features: ? one input to nine output buffer/driver ? supports two dimms or four so-dimms with one additional output for feedback to an external or chipset pll ? low power consumption for mobile applications: less than 32ma at 66.6mhz with unloaded outputs ? 8.7ns input-output delay ? buffers all frequencies from dc to 133.33mhz ? output-output skew < 250ps ? multiple v dd and v ss pins for noise and emi reduction ? 3.3v operation ? high drive capability ? available in soic and tssop packages functional block diagram idt2309nz nine output 3.3v clock buffer description: the idt2309nz is a low-cost buffer designed to distribute high-speed clocks in mobile pc systems and desktop pc systems with sdram support. this part has nine outputs, eight of which can be used to drive two dimms or four so-dimms, and the remaining can be used for external feedback to a pll. the idt2309nz operates at 3.3v and outputs can run up to 133.33mhz the idt2309nz is designed for low emi and power optimization. it has multiple v dd and v ss pins for noise optimization and consumes less than 32ma at 66.6mhz, making it ideal for the low power requirements of mobile systems. output6 output7 output8 output9 output2 output3 output4 output5 output1 buf_in
2 commercial and industrial temperature ranges idt2309nz nine output 3.3v clock buffer pin configuration soic/ tssop top view buf_in output1 v dd 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 1 output2 gnd output3 output9 output8 gnd gnd v dd v dd output4 output5 output6 output7 pin description pin name pin number functional description v dd 4, 8, 13 3.3v digital voltage supply gnd 5, 9, 12 ground buf_in 1 input clock output [1:9] 2, 3, 6, 7, 10 outputs 11, 14, 15, 16 symbol parameter min. max. unit v dd supply voltage 3 3.6 v t a operating temperature (ambient temperature) 0 70 c c l load capacitance, f out < 100mhz ? 30 pf load capacitance 100mhz < f out < 133.33mhz ? 15 c in input capacitance ? 7 pf buf_in, sdram [1:9] operating frequency dc 133.33 m h z operating conditions - commercial symbol rating max. unit v dd supply voltage range ?0.5 to +4.6 v v i (2) input voltage range (ref) ?0.5 to +5.5 v v i input voltage range ?0.5 to v (except ref) v dd +0.5 i ik (v i < 0) input clamp current ?50 ma i o (v o = 0 to v dd ) continuous output current 50 ma v dd or gnd continuous current 100 ma t a = 55c maximum power dissipation 0.7 w (in still air) (3) t stg storage temperature range ?65 to +150 c operating commercial temperature 0 to +70 c temperature range operating in dustrial temperature -40 to +85 c temperature range notes: 1. stresses greater than those listed under absolute maximum ratings may cause permanent damage to the device. this is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. exposure to absolute maximum rating conditions for extended periods may affect reliability. 2. the input and output negative-voltage ratings may be exceeded if the input and output clamp-current ratings are observed. 3. the maximum package power dissipation is calculated using a junction temperature of 150c and a board trace length of 750 mils. absolute maximum ratings (1)
3 commercial and industrial temperature ranges idt2309nz nine output 3.3v clock buffer switching characteristics - commercial (1) symbol parameter (2) conditions min. typ. max. unit t 3 rise time measured between 0.8v and 2v ? ? 1.5 ns t 4 fall time measured between 0.8v and 2v ? ? 1.5 ns t 5 output to output skew all outputs equally loaded ? ? 250 ps t 6 propagation delay, buf_in rising edge measured at v dd /2 1 5 8.7 ns to output rising edge notes: 1. all parameters specified with loaded outputs. 2. parameter is guaranteed by design but not production tested. dc electrical characteristics - industrial symbol parameter conditions min. max. unit v il input low voltage (1) ? 0.8 v v ih input high voltage (1) 2?v i il input low current v in = 0v ? 50 a i ih input high current v in = v dd ? 100 a v ol output low voltage (2) i ol = 8ma ? 0.4 v v oh output high voltage (2) i oh = -8ma 2.4 ? v i dd supply current unloaded outputs at 66.66mhz ? 35 ma notes: 1. buf_in input has a threshold voltage of v dd /2. 2. parameter is guaranteed by design but not production tested. symbol parameter min. max. unit v dd supply voltage 3 3.6 v t a operating temperature (ambient temperature) -40 +85 c c l load capacitance, f out < 100mhz ? 30 pf load capacitance 100mhz < f out < 133.33mhz ? 15 c in input capacitance ? 7 pf buf_in, sdram [1:9] operating frequency dc 133.33 m h z operating conditions - industrial dc electrical characteristics - commercial symbol parameter conditions min. max. unit v il input low voltage (1) ? 0.8 v v ih input high voltage (1) 2?v i il input low current v in = 0v ? 50 a i ih input high current v in = v dd ? 100 a v ol output low voltage (2) i ol = 8ma ? 0.4 v v oh output high voltage (2) i oh = -8ma 2.4 ? v i dd supply current unloaded outputs at 66.66mhz ? 32 ma notes: 1. buf_in input has a threshold voltage of v dd /2. 2. parameter is guaranteed by design but not production tested.
4 commercial and industrial temperature ranges idt2309nz nine output 3.3v clock buffer 2v 0.8v t3 t4 0.8v 3.3v 0v 2v output input v dd/ 2 t 6 output v dd /2 output 1.4v 1.4v t 5 v dd outputs clk out c load gnd 0.1 f all outputs rise/fall time input to output propagation delay output to output skew switching waveforms test circuit switching characteristics - industrial (1) symbol parameter (2) conditions min. typ. max. unit t 3 rise time measured between 0.8v and 2v ? ? 1.5 ns t 4 fall time measured between 0.8v and 2v ? ? 1.5 ns t 5 output to output skew all outputs equally loaded ? ? 250 ps t 6 propagation delay, buf_in rising edge measured at v dd /2 1 5 8.7 ns to output rising edge notes: 1. all parameters specified with loaded outputs. 2. parameter is guaranteed by design but not production tested.
5 commercial and industrial temperature ranges idt2309nz nine output 3.3v clock buffer ordering information idt xxxxx xx x package process device type blank i 2309nz-1h commercial (0 o c to +70 o c) industrial (-40 o c to +85 o c) nine output 3.3v clock buffer small outline soic - green thin shrink small outline package tssop - green dc dcg pg pgg corporate headquarters for sales: for tech support: 6024 silver creek valley road 800-345-7015 or 408-284-8200 clockhelp@idt.com san jose, ca 95138 fax: 408-284-2775 www.idt.com
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