TC74HC154AP 2007-10-01 1 toshiba cmos digital integrat ed ci rcuit silicon monolithic TC74HC154AP 4-to-16 line decoder the tc74hc154a is a high speed cmos 4 to 16 line decoder/demultiplexer fabric ated with silicon gate c2mos technology. it achieves the high speed op eration similar to equivalent lsttl while maintaining the cmos low power dissipation. a binary code applied to the four inputs a thru d is decoded within the device. depending on the binary code, causes one of sixteen outputs to go low, wh en both the strobe inputs, 1g and 2g , are held low. when either strobe input is held high, the decoding function is inhibited to keep all outputs high. the strobe function makes it easy to expand the decoding lines through cascading, and simplifies the design of address decoding circuits in a memory control system. all inputs are equipped with protec tion circuits against static disc harge or transient excess voltage. features ? high speed: t pd = 15 ns (typ.) at v cc = 5 v ? low power dissipation: i cc = 4 a (max) at ta = 25c ? high noise immunity: v nih = v nil = 28% v cc (min) ? output drive capability: 10 lsttl loads ? symmetrical output impedance: |i oh | = i ol = 4 ma (min) ? balanced propagation delays: t plh ? t phl ? wide operating voltage range: v cc (opr) = 2~6 v ? pin and function compatible with 74ls154 pin assignment weight: 1.50 g (typ.)
TC74HC154AP 2007-10-01 2 iec logic symbol truth table inputs 1g 2g d c b a selected output (l) l l l l l l 0y l l l l l h 1 y l l l l h l 2 y l l l l h h 3y l l l h l l 4 y l l l h l h 5 y l l l h h l 6 y l l l h h h 7 y l l h l l l 8y l l h l l h 9y l l h l h l 10y l l h l h h 11 y l l h h l l 12 y l l h h l h 13 y l l h h h l 14 y l l h h h h 15 y x h x x x x none h x x x x x none x: don?t care
TC74HC154AP 2007-10-01 3 system diagram absolute maximum ratings (note 1) characteristics symbol rating unit supply voltage range v cc ? 0.5~7 v dc input voltage v in ? 0.5~v cc + 0.5 v dc output voltage v out ? 0.5~v cc + 0.5 v input diode current i ik 20 ma output diode current i ok 20 ma dc output current i out 25 ma dc v cc /ground current i cc 50 ma power dissipation p d 500 (note 2) mw storage temperature t stg ? 65~150 c note 1: exceeding any of the absolute maximum ratings, even briefly, lead to deterioration in ic performance or even destruction. using continuously under heavy loads (e.g. the app lication of high temperature/current/voltage and the significant change in temperature, etc.) may cause this product to decrease in the reliability significantly even if the operating conditions (i.e. operating temper ature/current/voltage, etc. ) are within the absolute maximum ratings and the operating ranges. please design the appropriate reliability upon reviewing the toshiba semiconductor reliability handbook (?handling precautions?/?derating concept and methods?) and individual reliability data (i.e. reliability test report and estimated failure rate, etc). note 2: 500 mw in the range of ta = ? 40c~65c. from ta = 65c to 85c a derating factor of ? 10 mw/c shall be applied until 300 mw.
TC74HC154AP 2007-10-01 4 operating ranges (note) characteristics symbol rating unit supply voltage v cc 2~6 v input voltage v in 0~v cc v output voltage v out 0~v cc v operating temperature t opr ? 40~85 c input rise and fall time t r , t f 0~1000 (v cc = 2.0 v) 0~500 (v cc = 4.5 v) 0~400 (v cc = 6.0 v) ns note: the operating ranges must be maintained to ensure the normal oper ation of the device. unused inputs must be tied to either vcc or gnd. electrical characteristics dc characteristics test condition ta = 25c ta = ? 40~85c characteristics symbol v cc (v) min typ. max min max unit high-level input voltage v ih ? 2.0 4.5 6.0 1.50 3.15 4.20 ? ? ? ? ? ? 1.50 3.15 4.20 ? ? ? v low-level input voltage v il ? 2.0 4.5 6.0 ? ? ? ? ? ? 0.50 1.35 1.80 ? ? ? 0.50 1.35 1.80 v i oh = ? 20 a 2.0 4.5 6.0 1.9 4.4 5.9 2.0 4.5 6.0 ? ? ? 1.9 4.4 5.9 ? ? ? high-level output voltage v oh v in = v ih or v il i oh = ? 4 ma i oh = ? 5.2 ma 4.5 6.0 4.18 5.68 4.31 5.80 ? ? 4.13 5.63 ? ? v i ol = 20 a 2.0 4.5 6.0 ? ? ? 0.0 0.0 0.0 0.1 0.1 0.1 ? ? ? 0.1 0.1 0.1 low-level output voltage v ol v in = v ih or v il i ol = 4 ma i ol = 5.2 ma 4.5 6.0 ? ? 0.17 0.18 0.26 0.26 ? ? 0.33 0.33 v input leakage current i in v in = v cc or gnd 6.0 ? ? 0.1 ? 1.0 a quiescent supply current i cc v in = v cc or gnd 6.0 ? ? 4.0 ? 40.0 a
TC74HC154AP 2007-10-01 5 ac characteristics (c l = 15 pf, v cc = 5 v, ta = 25c, input: t r = t f = 6 ns) characteristics symbol test condition min typ. max unit output transition time t tlh t thl ? ? 4 8 ns propagation delay time (a, b, c, d- y) t plh t phl ? ? 15 30 ns propagation delay time ( 1g , 2g - y) t plh t phl ? ? 14 28 ns ac characteristics (c l = 50 pf, input: t r = t f = 6 ns) test condition ta = 25c ta = ? 40~85c characteristics symbol v cc (v) min typ. max min max unit output transition time t tlh t thl ? 2.0 4.5 6.0 ? ? ? 30 8 7 75 15 13 ? ? ? 95 19 16 ns propagation delay time (a, b, c, d- y) t plh t phl ? 2.0 4.5 6.0 ? ? ? 65 19 16 175 35 30 ? ? ? 220 44 37 ns propagation delay time ( 1 g, 2 g- y) t plh t phl ? 2.0 4.5 6.0 ? ? ? 55 17 15 160 32 27 ? ? ? 200 40 34 ns input capacitance c in ? ? 5 10 ? 10 pf power dissipation capacitance c pd (note) ? ? 57 ? ? ? pf note: c pd is defined as the value of the internal equivalent capacitance which is ca lculated from the operating current consumption without load. average operating current can be obtained by the equation: i cc (opr) = c pd ?v cc ?f in + i cc
TC74HC154AP 2007-10-01 6 package dimensions weight: 1.50 g (typ.)
TC74HC154AP 2007-10-01 7 restrictions on product use 20070701-en general ? the information contained herein is subject to change without notice. ? toshiba is continually working to improve the quality and reliability of its products. nevertheless, semiconductor devices in general can malfunction or fail due to their inherent electrical sensitivity an d vulnerability to physical stress. it is the responsibility of the buyer, when utilizing toshiba produc ts, to comply with the standards of safety in making a safe design for the entire system, and to avoid situations in which a malfunction or failure of such toshiba products could cause loss of human life, bodily injury or damage to property. in developing your designs, please ensure that toshiba products are used within specified operating ranges as set forth in the most recent toshib a products specifications. also, please keep in mind the precautions and conditions set forth in the ?handling guide for semiconduct or devices,? or ?toshiba semiconductor reliability handbook? etc. ? the toshiba products listed in this document are in tended for usage in general electronics applications (computer, personal equipment, office equipment, measuri ng equipment, industrial robotics, domestic appliances, etc.).these toshiba products are neither intended nor warranted for usage in equipment that requires extraordinarily high quality and/or reliability or a malfuncti on or failure of which may cause loss of human life or bodily injury (?unintended usage?). unintended usage incl ude atomic energy control instruments, airplane or spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments, medical instruments, all types of safety devices, et c.. unintended usage of toshiba products listed in his document shall be made at the customer?s own risk. ? the products described in this document shall not be used or embedded to any downstream products of which manufacture, use and/or sale are prohibited under any applicable laws and regulations. ? the information contained herein is presented only as a guide for the applications of our products. no responsibility is assumed by toshiba for any infringement s of patents or other rights of the third parties which may result from its use. no license is granted by implic ation or otherwise under any patents or other rights of toshiba or the third parties. ? please contact your sales representative for product- by-product details in this document regarding rohs compatibility. please use these products in this document in compliance with all applicable laws and regulations that regulate the inclusion or use of controlled substances. toshiba assumes no liability for damage or losses occurring as a result of noncompliance with applicable laws and regulations.
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