1 commercial and industrial temperature ranges idt2305nz five output 3.3v clock buffer august 2009 2009 integrated device technology, inc. dsc 6592/5 c commercial and industrial temperature ranges the idt logo is a registered trademark of integrated device technology, inc. features: ? one input to five output buffer/driver ? low power consumption for mobile applications: less than 32ma at 66.6mhz with unloaded outputs ? 8.7ns max input-output delay ? buffers all frequencies from dc to 133.33mhz ? output-output skew < 250ps ? 3.3v operation ? high drive capability ? available in soic package functional block diagram idt2305nz five output 3.3v clock buffer description: the idt2305nz is a low-cost buffer designed to distribute high-speed clocks in mobile pc systems and desktop pc systems. the idt2305nz operates at 3.3v with five outputs that can run up to 133.33mhz the idt2305nz is an 8-pin version of the idt2309nz. it is designed for low emi and power optimization and consumes less than 32ma at 66.6mhz, making it ideal for the low power requirements of mobile systems. output2 output3 output4 output1 buf_in output5
2 commercial and industrial temperature ranges idt2305nz five output 3.3v clock buffer pin configuration soic top view pin description pin name pin number functional description v dd 6 3.3v digital voltage supply gnd 4 ground buf_in 1 input clock output [1:5] 2, 3, 5, 7, 8 outputs 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, output [1:5] 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 industrial 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) 1 2 3 4 5 6 7 8 buf_in output1 output2 gnd output3 output4 output5 vdd
3 commercial and industrial temperature ranges idt2305nz five 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 dc duty cycle measured at v dd /2 45 ? 55 % 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 = 12ma ? 0.4 v v oh output high voltage (2) i oh = -12ma 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, output [1:5] 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 = 12ma ? 0.4 v v oh output high voltage (2) i oh = -12ma 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 idt2305nz five output 3.3v clock buffer 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 dc duty cycle measured at v dd /2 45 ? 55 % notes: 1. all parameters specified with loaded outputs. 2. parameter is guaranteed by design but not production tested. all outputs rise/fall time input to output propagation delay output to output skew switching waveforms test circuit 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 0.01 f
5 commercial and industrial temperature ranges idt2305nz five output 3.3v clock buffer 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 ordering information idt xxxxx xx x package process device type blank i 2305nz-1h commercial (0 o cto+70 o c) industrial (-40 o cto+85 o c) five output 3.3v clock buffer small outline soic - green dc dcg
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