TOSHIBA TC74VHCT240,244AF/AFW/AFT TOSHIBA CMOS DIGITAL INTEGRATED CIRCUIT SILICON MONOLITHIC TC74VHCT240AF, TC74VHCT240AFW, TC74VHCT240AFT TC74VHCT244AF, TC74VHCT244AFW, TC74VHCT244AFT OCTAL BUS BUFFER TC74VHCT240AF /AFW/AFT INVERTED, 3- STATE OUTPUTS The TC74VHCT240A and 244A are advanced high speed CMOS OCTAL BUS BUFFFERs fabricated with silicon gate C2MOS technology. They achieve the high speed operation similar to equivalent Bipolar Schottky TTL while maintaining the CMOS low power dissipation. 20 20 The TC74VHCT240A is an inverting 3- state buffer having u two active -low output enables. The TC74VHCT244A is a non 1 1 - inverting 3- state buffer, and has two active - low output F (SOP20-P-300-1.27) FW (SOL20-P-300-1.27) enables. Weight : 0.22g(TYP.) Weight : 0.46g (TYP.) These devices are designed to be used with 3- state memory address drivers, etc. The input voltage are compatible with TTL output voltage. These devices may be used as a level converter for 20 ce interfacing 3.3V to 5V system. ce Input protection and output circuit ensure that 0 to 5.5V can i be applied to the input and output*! pins without regard to FT (TSSOP20-P-0044-0.65) the supply voltage. These structure prevents device Weight : 0.08g (TYP.) destruction due to mismatched supply and input / output voltages such as battery back up, hot board insertion, ete. TRUTH TABLE *1; output in off-state FEATURES: INPUTS OUTPUTS e High Speed: sonnsasceconnasceessnneeascesanasens tod = 5.6ns(typ.) at Voc = 5V G An Yn Yn Low Power Dissipation ::-----+--++-- loc = 4A(Max.) at Ta = 25C Compatible with TTL outputs --Vi_ =0.8 V (Max.) L LyTtyu Vin =2.0 V (Min.) L H L e Power Down Protection is provided on all inputs and Hi X outputs , z z * Balanced Propagation Delays---- to.H= tpHL X = Don't Care LOW Noise <--tcccsssesseveseeeesceecerscseeees Vorp = 1.1V (Max.) y a igt anegance e Pin and Function Compatible with the 74 series(74AC /HC Yn : TC7AVHCT240A /F/ALS/LS etc.) 240/244 type. PIN ASSIGNMENT TC74VHCT240A (TOP. VIEW) TC74VHCT244A @ 1th 20 ve @ 1fhpy 20 Ve 1A1 2 Ch <P pls 2G 1AT 2 aN <p{] 19 26 24 3 rj is 11 2v4 30 [J 18 11 1A2 4 qe ep 2A4 1A2 Be Rah 2A4 w3 57 ry 16 12 23 50] fy 16 1v2 1A3 6 hap 243 1A3 Res 23 w2 79 N rj14 13 272 70 N [J 14 13 1A4 8 qi LoxH] 13 2A2 1Aa 8 Go P13 202 21 90 [12 14 avi oOo] p] 12 14 Gnd 10D A 2A1 GND 10[] \ay8n 2A1 961001EBA2 @ TOSHIBA is continually working to improve the quality and the reliability of its products. Nevertheless, semiconductor devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical stress. it is the responsibility of the buyer, when utilizing TOSHIBA products, to observe standards of safety, and to avoid situations in which a malfunction or failure of a TOSHIBA product could cause Joss of human life, bodily injury or damage to property. In developing your designs, please ensure that TOSHIBA products are used within specified aperating ranges as set forth in the most recent products specifications. Also, please keep in mind the precautions and conditions set forth in the TOSHIBA Semiconductor Reliability Handbook. 257 1997-01-30 1/6 TOSHIBA TC74VHCT240,244AF/AFW/AFT IEC LOGIC SYMBOL TC74VHCT240A TC74VHCT244A Q) EN 16 ew 1At 11 1A1 11 TA2 12 1A2 12 1a3 ty3 1A3 13 1Aa 7 1A4 14 2G 26 2a1 v1 2At 21 2a2 22 2A2 2v2 2A3 2v3 243 zyY3 2A4 2Y4 2A4 2yv4 ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL VALUE UNIT Supply Voltage Range Vee 0.5~7.0 Vv DC Input Voltage Vin 0.5~7.0 Vv DC Output Voltage Vour 0.5~7.0 (Note 1) V 0.5~VCC +0.5 (Note 2) Input Diode Current lie 20 mA Output Diode Current lok t20 = (Note 3) mA DC Output Current lour #25 mA DC Vcce/Ground Current lec 75 mA Power Dissipation Pp 180 mw Storage Temperature Tstg 65~150 C (Note 1) Output in Off-State (Note 2) High or Low State. lgytT absolute maximum rating must be observed. (Note 3) VoguT<GND, VouT>Vcc RECOMMENDED OPERATING CONDITIONS PARAMETER SYMBOL VALUE UNIT Supply Voltage Vec 4.5~5.5 Vv Input Voltage Vin 0~5.5 Vv 0~5.5 (Note 4) Output Voltage Vout OVCC (Note 5) Vv Operating Temperature Topr 40~85 a Input Rise and Fall Time dt/dV 0~20 ns/V (Note 4) Output in Off-State (Note 5) High or Low State 961001 EBA2' 3 The products described in this document are subject to foreign exchange and foreign trade contro) laws. | The information contained herein is presented only as a guide for the applications of our products. No responsibility is assumed by TOSHIBA CORPORATION for any infringements of intellectual property or other rights of the third parties which may resuit from its use. No ticense is granted by implication or otherwise under any intellectual property or other rights of TOSHIBA CORPORATION or others. @ The information contained herein is subject to change without notice. 258 ~ 1997-01-30 2/6 TOSHIBA TC74VHCT240, 244AF/AFW/AFT DC ELECTRICAL CHARACTERISTICS Ta= 25C Ta = 40~85 PARAMETER _| SYMBOL CONDITON Vec(V) : =e UNIT MIN. | TYP. | MAX. | MIN. | MAX. High - Level _ _ _ Input Voltage Vin 4.5~5.5) 2.0 2.0 Vv Low - Level _ _ input Voltage Viv 4.5~5.5 0.8 08s | Vv High - Level Vv Vin= lon= -504A |] 45 | 440/450] | 440] Vv OH Output Voltage Vinor Vit lon = 8MA 45 3.94) _ 3.80 | Low - Level Vine lo. = 550A 45 ~ 0.0 | 0.10} | 0.10 Output Voltage Vou v Vinor Vit lor = 8MA 45 _ _ 0.36 _ 0.44 3-State Output Vin= Vin orVit _ ~ |+ 4+ Off - State Current oz | Vour = Vec or GND 5.5 +0.25 +2.50 Input Leakage Current lin Vin =5.5V or GND 0~5.5 ~ - +0.1 > +1.0 wh lee Vin =Vcc or GND 5.5 _- - 4.0 _ 40.0 Quiescent Supply Current | ' PER INPUT: VIN=3.4V 55 _ la3s! | aso | ma CCT | OTHER INPUT : VCC or GND . . . Output Leakage Current lopp =| Vout = 5.5V 0 - - +05) +5.0| uA AC ELECTRICAL CHARACTERISTICS ( Input t, = t-=3ns) TEST CONDITION Ta=25C Ta = 40~85C PARAMETER SYMBOL UNIT Vee(V) | Ci (pF)] MIN. | TYP. | MAX. | MIN. | MAX. Propagation Delay Time totH 5.0405 15 - 5.6 7.8 1.0 9.0 (TC74VHCT240A) TpHL Te 50 = 61| 88] 1.0| 10.0 Propagation Delay Time tot 5.0+05 15 = 5.4 7.4 1.0 8.5 (TC74VHCT244A) tort TS 50 = 5.9 8.4 1.0 9.5 _ . tozt _ + 15 - 7.7 | 104] 1.0] 12.0] ns 3-State Output Enable Time tozH Ri = 1k. |5.0+0.5 50 2) 414 101 13.0 3-State Output Disable Time pe R= 1k |5.0+0.5] 50 - 8.8] 11.4 10] 13.0 tosLH Output to Output Skew teen (Note 6) |5.0+0.5] 50 1.0 1.0 Input Capacitance Cn _ 4 10 _ 10 Output Capacitance Cout _ 9 _ _ _ pF Power Dissipation Capacitance Cpp TC7AVHCT240A 7 19 = 7 _ (Note 7) TC7AVHCT244A - 18 _ - _ (Note 6) Parameter guaranteed by design. toguy = Itpum tpt |, tosti. = Itoi ton (Note 7) Cpp is defined as the value of the al eat aa aL wee is calculated from the operating current consumption without load. Average operating current can be obtained by the equation: Toc wopr) =C po+ Veo: fin+Icc/8( per bit ) 259 1997-01-30 3/6 TOSHIBA TC74VHCT240,244AF/AFW/AFT NOISE CHARACTERISTICS (Input t,=t-=3ns) PARAMETER SYMBOL TEST CONDITION Tas 25 UNIT Vee (V) TYP. LIMIT Ret ore ynamic Vo, | Vow C,=50pF 5.0 0.9 1.1 Vv quiet oe amic Vo. Vow C, =50pF 5.0 -0.9 11 Vv bynamic Inpet Voltage | Vito | C.=S0pF 5.0 = 20 | v Moximumion tetlne | vio | cesoor | 50 | - | 8 |v 260 1997-01-30 4/6