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| TC74VHCT240,244AF/AFT/AFK TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic TC74VHCT240AF,TC74VHCT240AFT,TC74VHCT240AFK TC74VHCT244AF,TC74VHCT244AFT,TC74VHCT244AFK Octal Bus Buffer TC74VHCT240AF/AFT/AFK Inverted, 3-State Outputs TC74VHCT244AF/AFT/AFK Non-Inverted, 3-State Outputs The TC74VHCT240A and 244A are advanced high speed CMOS OCTAL BUS BUFFERs 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. The TC74VHCT240A is an inverting 3-state buffer having two active-low output enables. The TC74VHCT244A is a non-inverting 3-state buffer, and has two active-low output enables. 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 interfacing 3.3 V to 5 V system. Input protection and output circuit ensure that 0 to 5.5 V can be applied to the input and output (Note) pins without regard to the supply voltage. These structure prevents device destruction due to mismatched supply and input/output voltages such as battery back up, hot board insertion, etc. Note: Output in off-state TC74VHCT240AF, TC74VHCT244AF TC74VHCT240AFT, TC74VHCT244AFT TC74VHCT240AFK, TC74VHCT244AFK Features * * * * * * * High speed: tpd = 6.1 ns (typ.) at VCC = 5 V Low power dissipation: ICC = 4 A (max) at Ta = 25C Compatible with TTL outputs: VIL = 0.8 V (max) VIH = 2.0 V (min) Power down protection is provided on all inputs and outputs Balanced propagation delays: tpLH - tpHL Low noise: VOLP = 1.0 V (max) Pin and function compatible with the 74 series (74AC/HC/F/ALS/LS etc.) 240/244 type. Weight SOP20-P-300-1.27A TSSOP20-P-0044-0.65A VSSOP20-P-0030-0.50 : 0.22 g (typ.) : 0.08 g (typ.) : 0.03 g (typ.) 1 2007-10-01 TC74VHCT240,244AF/AFT/AFK Pin Assignment TC74VHCT240A 1G 1A1 1 2 3 4 5 6 7 20 VCC TC74VHCT244A 1G 1A1 2Y4 1A2 2Y3 1A3 2Y2 1A4 2Y1 1 2 3 4 5 6 7 8 9 20 19 18 17 16 15 14 13 12 11 (top view) VCC 2G 1Y1 2A4 1Y2 2A3 1Y3 2A2 1Y4 2A1 19 18 17 16 2G 1Y1 2A4 2Y 4 1A2 2Y3 1A3 2Y 2 1A4 2Y1 1Y 2 2A3 15 14 13 12 11 1Y3 2A2 1Y 4 2A1 8 9 GND 10 (top view) GND 10 IEC Logic Symbol TC74VHCT240A 1G 1A1 1A2 1A3 1A4 (1) (2) (4) (6) (8) EN (18) (16) (14) (12) 1Y1 1Y 2 1Y3 1Y 4 1G 1A1 1A2 1A3 1A4 (1) (2) (4) (6) (8) TC74VHCT244A EN (18) (16) (14) (12) 1Y1 1Y2 1Y3 1Y4 2G 2A1 2A2 2A3 2A4 (19) (11) (13) (15) (17) EN (9) (7) (5) (3) 2Y1 2Y 2 2Y3 2Y 4 2G 2A1 2A2 2A3 2A4 (19) (11) (13) (15) (17) EN (9) (7) (5) (3) 2Y1 2Y2 2Y3 2Y4 Truth Table Inputs Outputs Yn L H Z G L L H An L H X Yn H L Z X: Don't care Z: High impedance Yn: TC74VHCT244A Y n : TC74VHCT240A 2 2007-10-01 TC74VHCT240,244AF/AFT/AFK Absolute Maximum Ratings (Note 1) Characteristics Supply voltage range DC input voltage DC output voltage Input diode current Output diode current DC output current DC VCC/ground current Power dissipation Storage temperature Symbol VCC VIN VOUT IIK IOK IOUT ICC PD Tstg Rating -0.5 to 7.0 -0.5 to 7.0 -0.5 to 7.0 -0.5 to VCC + 0.5 -20 20 25 75 Unit V V (Note 2) (Note 3) V mA (Note 4) mA mA mA mW C 180 -65 to 150 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 application 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 temperature/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: Output in off-state Note 3: High or low state. IOUT absolute maximum rating must be observed. Note 4: VOUT < GND, VOUT > VCC Operating Ranges (Note 1) Characteristics Supply voltage Input voltage Output voltage Operating temperature Input rise and fall time Symbol VCC VIN VOUT Topr dt/dV Rating 4.5 to 5.5 0 to 5.5 0 to 5.5 0 to VCC -40 to 85 Unit V V (Note 2) (Note 3) V C ns/V 0 to 20 Note 1: The operating ranges must be maintained to ensure the normal operation of the device. Unused inputs must be tied to either VCC or GND. Note 2: Output in off-state Note 3: High or low state 3 2007-10-01 TC74VHCT240,244AF/AFT/AFK Electrical Characteristics DC Characteristics Characteristics High-level input voltage Low-level input voltage High-level output voltage Low-level output voltage 3-state output off-state current Input leakage current Quiescent supply current Output leakage current Symbol Test Condition VCC (V) VIH VIL VOH Ta = 25C Min 2.0 Ta = -40 to 85C Max Unit Typ. Min 2.0 Max 4.5 to 5.5 4.5 to 5.5 4.5 4.5 4.5 4.5 5.5 V V V 0.8 0.8 VIN IOH = -50 A = VIH or IOH = -8 mA VIL VIN IOL = 50 A = VIH or IOL = 8 mA VIL VIN = VIH or VIL VOUT = VCC or GND VIN = 5.5 V or GND VIN = VCC or GND Per input: VIN = 3.4 V Other input: VCC or GND VOUT = 5.5 V 4.40 3.94 4.50 4.40 3.80 VOL 0.0 0.10 0.36 0.25 0.10 0.44 2.50 V IOZ IIN ICC ICCT IOPD A 0 to 5.5 5.5 5.5 0 0.1 1.0 A A 4.0 1.35 0.5 40.0 1.50 5.0 mA A 4 2007-10-01 TC74VHCT240,244AF/AFT/AFK AC Characteristics (input: tr = tf = 3 ns) Characteristics Propagation delay time (TC74VHCT240A) Propagation delay time (TC74VHCT244A) 3-state output enable time 3-state output disable time Output to output skew Input capacitance Output capacitance Power dissipation capacitance (Note 2) Symbol Test Condition VCC (V) tpLH tpHL tpLH tpHL tpZL tpZH tpLZ tpHZ tosLH tosHL CIN COUT CPD TC74VHCT240A TC74VHCT244A Ta = 25C CL (pF) 15 50 Min Ta = -40 to 85C Max 7.8 8.8 7.4 8.4 10.4 11.4 11.4 Min 1.0 1.0 1.0 1.0 1.0 1.0 1.0 Max 9.0 Unit Typ. 5.6 6.1 5.4 5.9 7.7 8.2 8.8 5.0 0.5 ns 10.0 8.5 ns 50 9.5 12.0 13.0 13.0 ns 15 50 50 5.0 0.5 15 RL = 1 k 5.0 0.5 RL = 1 k 5.0 0.5 ns (Note 1) 5.0 0.5 50 1.0 10 1.0 10 ns pF pF pF 4 9 19 18 Note 1: Parameter guaranteed by design. tosLH = |tpLHm - tpLHn|, tosHL = |tpHLm - tpHLn| Note 2: CPD 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: ICC (opr) = CPD*VCC*fIN + ICC/8 (per bit) Noise Characteristics (input: tr = tf = 3 ns) Characteristics Quiet output maximum dynamic VOL Quiet output minimum dynamic VOL Minimum high level dynamic input voltage Maximum low level dynamic input voltage Symbol VOLP VOLV VIHD VILD CL = 50 pF CL = 50 pF CL = 50 pF CL = 50 pF Test Condition VCC (V) 5.0 5.0 5.0 5.0 Ta = 25C Typ. 0.8 -0.8 Limit 1.0 -1.0 Unit V V V V 2.0 0.8 5 2007-10-01 TC74VHCT240,244AF/AFT/AFK Package Dimensions Weight: 0.22 g (typ.) 6 2007-10-01 TC74VHCT240,244AF/AFT/AFK Package Dimensions Weight: 0.08 g (typ.) 7 2007-10-01 TC74VHCT240,244AF/AFT/AFK Package Dimensions Weight: 0.03 g (typ.) 8 2007-10-01 TC74VHCT240,244AF/AFT/AFK RESTRICTIONS ON PRODUCT USE * The information contained herein is subject to change without notice. 20070701-EN GENERAL * 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 and vulnerability to physical stress. It is the responsibility of the buyer, when utilizing TOSHIBA products, 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 TOSHIBA products specifications. Also, please keep in mind the precautions and conditions set forth in the "Handling Guide for Semiconductor Devices," or "TOSHIBA Semiconductor Reliability Handbook" etc. * The TOSHIBA products listed in this document are intended for usage in general electronics applications (computer, personal equipment, office equipment, measuring 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 malfunction or failure of which may cause loss of human life or bodily injury ("Unintended Usage"). Unintended Usage include atomic energy control instruments, airplane or spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments, medical instruments, all types of safety devices, etc.. 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 infringements of patents or other rights of the third parties which may result from its use. No license is granted by implication 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. 9 2007-10-01 |
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