TOSHIBA TC74VHCT245AF/AFW/AFT TOSHIBA CMOS DIGITAL INTEGRATED CIRCUIT SILICON MONOLITHIC TC74VHCT245AF, TC74VHCT245AFW, TC74VHCT245AFT (Note) The JEDEC SOP (FW) is not available OCTAL BUS TRANSCEIVER in Japan. The TC74VHCT245A is an advanced high speed CMOS OCTAL BUS TRANSCEIVER fabricated with silicon gate C2MOS technology. It achieves the high speed operation similar to equivalent Bipolar Schottky TTL while maintaining the CMOS low power dissipation. It is intended for two-way asynchronous communication between data busses. The direction of data transmission is F (SOP20-P-300-1.27) FW (SOL20-P-300-1.27) determined by the level of the DIR input. Weight : 0.22g (Typ.) Weight : 0.46g (Typ) The enable input (G) can be used to disable the device so that the busses are effectively isolated. The input voltage are compatible with TTL output voltage. This device may be used as a level converter for interfacing 3.3V to 5V system. Input protection and output circuit ensure that 0 to 5.5V can 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 : 0.089 (Typ.) destruction due to mismatched supply and input/output voltages such as battery back up, hot board insertion, etc. APPLICATION NOTES *1: output in off-state P Do not apply a signal to any bus FEATURES: terminal when it is in the output High Speed-srss-ssssssseeecesrsesesseensens tod = 4.9ns(typ.) at Voc = 5V mode. Damage may result. e Low Power Dissipation ---+--++-+++++- lec = 4A(Max.) at Ta = 25C All floating (high impedance ) bus Compatible with TTL outputs -- Vj, =0.8V (Max.) terminals must have their input Vin = 2.0V (Min.) levels fixed by means of pull up or e Power Down Protection is provided on all inputs and pull down resistors. outputs Balanced Propagation Delays--- toLH=tpHL LOW Noise vstessssssssesssseeesssesseseeees Vo_p = 1.6V (Max.) e Pin and Function Compatible with the 74 series (74AC /HC /F/ALS/LS ete.) 245 type. IEC LOGIC SYMBOL PIN ASSIGNMENT 6th DIR 3EN 1(BA DIR EN 2[ Al ai 2 18) 34 A2 a2 & go A3 a3 (4 16) 53 AA aa & 1) pa AS AG ( 14) AS B5 a AG 13) Bg Ag AT ( 12) 55 GND 1 ag | gg (TOP VIEW) 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 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 products specifications. Also, please keep in mind the precautions and conditions set forth in the TOSHIBA Semiconductor Reliability Handbook. 1997-08-06 1/6TOSHIBA TC74VHCT245AF/AFW/AFT TRUTH TABLE INPUTS FUNCTION OUTPUT G | DIR} A BUS | B BUS L L | OUTPUT | INPUT A=B L H INPUT | OUTPUT B=A H x High Impedance Z X: Dont Care Z : High Impedance ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL VALUE UNIT Supply Voltage Range Vec 0.5~7.0 Vv DC Input Voltage (DIR, G) Vin 0.5~7.0 V DC Bus 1/0 Voltage Viro 0.5~7.0 (Note 1) Vv 0.5~VCC + 0.5 (Note 2) Input Diode Current lik 20 mA Output Diode Current lox +20 (Note 3) mA DC Output Current lout +25 mA DC Vec/Ground Current lee +75 mA Power Dissipation Pp 180 mw Storage Temperature Tstg 65~150 a (Note 1) Output in Off-State (Note 2) High or Low State. IgyT absolute maximum rating must be observed. (Note 3) VoUT<GND, VouT>Vcc RECOMMENDED OPERATING CONDITIONS PARAMETER SYMBOL VALUE UNIT Supply Voltage Vec 4.5~5.5 Vv Input Voltage (DIR, G) Vin 0~5.5 V Bus |/O Voltage Vivo 0~5.5 (Note 4) Vv 0~VCC (Note 5) Operating Temperature Topr 40~85 C Input Rise and Fall Time dt/dV 0~20 ns/V (Note 4) Output in Off-State (Note 5) High or Low State 961001EBA2 @ The products described in this document are subject to foreign exchange and foreign trade control 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 result from its use. No license 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. 1997-08-06 2/6TOSHIBA TC74VHCT245AF/AFW/AFT DC ELECTRICAL CHARACTERISTICS Ta=25C Ta = 40~85C PARAMETER SYMBOL CONDITON Vec(V) UNIT cc MIN. | TYP. | MAX. | MIN. | MAX. High - Level ~ _ _ _ input Voltage Vin 4.5~5.5| 2.0 2.0 V Low - Level ~ _ _ _ Input Voltage ViL 4.5~5.5 0.8 0.8 V High - Level Vin= ln = -50eA | 45 | 44] 45 | | 44 ] - Output Voltage Vou Vv Vin or Vit lon = -8MA 4.5 3.94 _ _ 3.80 _ Low - Level y Vin= lo, = 504A 4.5 _ 0.0 | 0.1 _ 0.1 V OL Output Voltage Vinor Vit lo. = 8mA 45 _ _ 0.36} 0.44 3-State Output Vin = Vin or Vit _ _ + |+ Off - State Current loz Vout = Vec or GND >. 0.25 2.50 A Input Leakage Current lin Vin=5.5V or GND O~5.5 _ _ +0.1 _ +1.0 e lec Vin =Vec or GND 5.5 _ _ 4.0 _ 40.0 Quiescent Supply Current . _ lecy [PER INPUT 2 Vive 3.aV 55 | | | 135} | 150 | ma OTHER INPUT : Vcc or GND Output Leakage Current lopp =| Vout =5.5V 0 _ _ 0.5 _ 5.0 | uA AC ELECTRICAL CHARACTERISTICS ( Input t, = t= 3ns ) TEST CONDITION Ta=25C Ta= 40~85C PARAMETER SYMBOL UNIT Vec(V) | C. (pF) | MIN. | TYP. | MAX. | MIN. | MAX. toLy 15 = 49| 7.7| 1.0] 85 Propagation Delay Time p O+0. Pagal yi toHL 902051 Fo TK 54| 37/10] 95 tozL 15 = 94] 13.8{ 1.0] 15.0 3-State Output Enable Time p RL=1kO.|5.0+0. P tozH [ot 90205) 59 | 99| 148] 1.0] 16.0| ns 3-State Output Disable Time plz R.=1ka {5.0+0.5| 50 | | 10.1] 15.4] 1.0] 16.5 Output to Output skew | ft |(Note 6) [5.0405] 50 | | | 10] 1.0 Input Capacitance Cin DIR,G 4 10 10 Bus Input Capacitance Cijo | An,Bn = 13 = = = pF Power Dissipation Capacitance Cpp (Note 7) _ 16 _ _ _ (Note 6) Parameter guaranteed by design. tosiy = ftptum totun, tosHt = [toot m tonin! (Note 7) Cpp is defined as the value of the internal equivalent capacitance which is calculated from the operating current consumption without load. Average operating current can be obtained by the equation: Ice opr) =C pp * Vee Fin tlece/8 (per bit) 1997-08-06 3/6TOSHIBA TC74VHCT245AF/AFW/AFT NOISE CHARACTERISTICS (Input t,=t;=3ns ) TEST CONDITION Ta = 25C PARAMETER SYMBOL UNIT Vec (V) TYP. LIMIT Quiet Output _ 1.1 1.5 Maximum Dynamic Vo. Votp C. = 50pF 5.0 (1.2) (1.6) Vv Quiet Output _ 1.1 1.5 Minimum Dynamic Vo, Votv C. = 50pF 5.0 (- 1.2) ( 1.6) Vv Minimum High Level _ _ Dynamic Input Voltage Vino C. = 50pF 5.0 2.0 Vv Maximum Low Level _ _ Dynamic Input Voltage Vio C. = 50pF 9.0 0.8 Vv (Note) The value in ( ) only applies toJEDEC SOP (FW) devices. 1997-08-06 4/6TOSHIBA TC74VHCT245AF/AFW/AFT SOP 20PIN (200mil BODY) OUTLINE DRAWING (SOP20-P-300-1.27) Unit in mm 20 11 - - HHHE AHHH a 3 = gg Bis w 2 HHH AHAB BL 1 10 0.685TYP LI |. 0.43+0.1 ETO 1.27 \ 13.3MAX 12.8+0.2 Tos s So 70.1] a 0.8+0.2 Weight : 0.22g (Typ.) SOP 20PIN (300mil BODY) OUTLINE DRAWING (SOL20-P-300-1.27) Unit in mm (Note) This package is not available in Japan. Dopgggggae4 D | 2 TERR ERR E ES 4 0.685T YP a 0.4240.07 [0.25 G) | . i | wax 40.1 0-15-0105 Weight : 0.46g (Typ.) 1997-08-06 5/6TOSHIBA TC74VHCT245AF/AFW/AFT TSSOP 20PIN OUTLINE DRAWING (TSSOP20-P-0044-0.65) Unit in mm 20 1 _ PHBE R A AE q O ay eae 0.65 0.24" } HH 0.07 J6013 @ O.325TYP | t 6. 75MAX wo 6540.1 8 3 C i | CWO . at 3 xe 0.45-~ 0.75 = Weight : 0.08g (Typ.) 3 1997-08-06 6/6