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| TC74LCX16240FT TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic TC74LCX16240FT Low-Voltage 16-Bit Bus Buffer (inverted) with 5-V Tolerant Inputs and Outputs The TC74LCX16240FT is a high-performance CMOS 16-bit bus buffer. Designed for use in 2.5-V or 3.3-V systems, it achieves high-speed operation while maintaining the CMOS low power dissipation. The device is designed for low-voltage (2.5-V or 3.3-V ) VCC applications, but it could be used to interface to 5-V supply environment for both inputs and outputs. This device is inverting 3-state buffer having four active-low output enables. It can be used as four 4-bit buffers two 8-bit buffers or one 16-bit buffer. When the OE input is high, the outputs are in a high-impedance state. This device is designed to be used with 3-state memory address drivers, etc. All inputs are equipped with protection circuits against static discharge. Weight: 0.25 g (typ.) Features * * * * * * Low-voltage operation: VCC = 2.0 to 3.6 V High-speed operation: tpd = 4.5 ns (max) (VCC = 3.0 to 3.6 V) Output current: |IOH|/IOL = 24 mA (min) (VCC = 3.0 V) Latch-up performance: 500 mA Package: TSSOP (thin shrink small outline package) Power-down protection provided on all inputs and outputs 1 2002-10-1 TC74LCX16240FT Pin Assignment (top view) IEC Logic Symbol 1 48 25 24 47 46 44 43 41 40 38 37 36 35 33 32 30 29 27 26 1OE 1 2 3 4 5 6 7 8 9 48 47 46 45 44 43 42 41 40 39 2OE 1OE 2OE 3OE 4OE 1Y1 1Y 2 1A1 1A2 GND 1A3 1A4 VCC 2A1 2A2 GND EN1 EN2 EN3 EN4 1 1 2 3 5 6 8 9 11 12 13 14 16 17 19 20 22 23 1Y1 1Y 2 1Y 3 1Y 4 2 Y1 2Y 2 2Y3 2Y 4 3Y1 3Y 2 3 Y3 3Y 4 4 Y1 4Y 2 4Y3 4Y 4 GND 1Y 3 1Y 4 VCC 2 Y1 2Y 2 GND 10 2Y3 2Y 4 3Y1 3Y 2 11 12 13 14 38 37 36 35 34 33 32 31 30 29 28 27 26 25 2A3 2A4 3A1 3A2 GND 3A3 3A4 VCC 4A1 4A2 GND 4A3 4A4 3OE 1A1 1A2 1A3 1A4 2A1 2A2 2A3 2A4 3A1 3A2 3A3 3A4 4A1 4A2 4A3 4A4 1 2 1 3 1 4 GND 15 3Y3 3Y 4 16 17 VCC 18 4Y1 4Y 2 19 20 GND 21 4Y3 4Y 4 4OE 22 23 24 2 2002-10-1 TC74LCX16240FT Truth Table Inputs 1OE System Diagram Outputs 1Y1 - 1Y 4 1OE 2OE 3OE 4OE 1A1-1A4 L H X L L H H L Z Inputs 2OE Outputs 2 Y1 - 2 Y 4 1A1-1A4 2A1-2A4 1Y1 - 1Y 4 2 Y1 - 2 Y 4 3Y1 - 3Y 4 4Y1 - 4Y 4 3A1-3A4 4A1-4A4 1/4 2A1-2A4 L H X L L H H L Z Inputs 3OE Outputs 3Y1 - 3Y 4 3A1-3A4 L H X L L H H L Z Inputs 4OE Outputs 4Y1 - 4Y 4 4A1-4A4 L H X L L H H L Z X: Don't care Z: High impedance 3 2002-10-1 TC74LCX16240FT Maximum Ratings Characteristics Power supply voltage Input voltage Output voltage Input diode current Output diode current DC output current Power dissipation DC VCC/ground current per supply pin Storage temperature Symbol VCC VIN VOUT IIK IOK IOUT PD ICC/IGND Tstg Rating -0.5 to 6.0 -0.5 to 7.0 -0.5 to 7.0 (Note 1) -0.5 to VCC + 0.5 (Note 2) -50 50 50 Unit V V V mA (Note 3) mA mA mW mA C 400 100 -65 to 150 Note 1: Output in OFF state Note 2: High or low state. IOUT absolute maximum rating must be observed. Note 3: VOUT < GND, VOUT > VCC Recommended Operating Conditions Characteristics Power supply voltage Input voltage Output voltage Symbol VCC VIN VOUT Rating 2.0 to 3.6 1.5 to 3.6 (Note 4) 0 to 5.5 0 to 5.5 (Note 5) 0 to VCC (Note 6) 24 Unit V V V (Note 7) (Note 8) (Note 9) C ns/V mA Output current IOH/IOL 12 8 Operating temperature Input rise and fall time Topr dt/dv -40 to 85 0 to 10 (Note 10) Note 4: Data retention only Note 5: Output in OFF state Note 6: High or low state Note 7: VCC = 3.0 to 3.6 V Note 8: VCC = 2.7 to 3.0 V Note 9: VCC = 2.3 to 2.7 V Note 10: VIN = 0.8 to 2.0 V, VCC = 3.0 V 4 2002-10-1 TC74LCX16240FT Electrical Characteristics DC Characteristics (Ta = -40 to 85C) Characteristics Symbol Test Condition VCC (V) H-level Input voltage L-level VIL 3/4 Min 2.3 to 2.7 2.7 to 3.6 2.3 to 2.7 2.7 to 3.6 1.7 2.0 3/4 3/4 Max 3/4 3/4 Unit VIH 3/4 V 0.7 0.8 3/4 3/4 3/4 3/4 3/4 IOH = -100 mA IOH = -8 mA H-level VOH VIN = VIH or VIL IOH = -12 mA IOH = -18 mA Output voltage IOH = -24 mA IOL = 100 mA IOL = 8 mA L-level VOL VIN = VIH or VIL IOL = 12 mA IOL = 16 mA IOL = 24 mA Input leakage current 3-state output OFF state current Power-off leakage current Quiescent supply current Increase in Icc per input IIN IOZ IOFF ICC DICC 2.3 to 3.6 2.3 2.7 3.0 3.0 2.3 to 3.6 2.3 2.7 3.0 3.0 2.3 to 3.6 2.3 to 3.6 0 2.3 to 3.6 2.3 to 3.6 2.3 to 3.6 VCC -0.2 1.8 2.2 2.4 2.2 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 3/4 V 0.2 0.6 0.4 0.4 0.55 5.0 5.0 mA mA mA VIN = 0 to 5.5 V VIN = VIH or VIL VOUT = 0 to 5.5 V VIN/VOUT = 5.5 V VIN = VCC or GND VIN/VOUT = 3.6 to 5.5 V VIH = VCC - 0.6 V 10.0 20.0 20.0 mA 500 5 2002-10-1 TC74LCX16240FT AC Characteristics (Ta = -40 to 85C) Characteristics Symbol Test Condition VCC (V) tpLH tpHL 2.5 0.2 Figure 1, Figure 2 2.7 3.3 0.3 2.5 0.2 Figure 1, Figure 3 2.7 3.3 0.3 2.5 0.2 Figure 1, Figure 3 2.7 3.3 0.3 2.5 0.2 (Note 11) 2.7 3.3 0.3 CL(pF) 30 50 50 30 50 50 30 50 50 30 50 50 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 3/4 3/4 3/4 Min Max 5.4 5.3 4.5 7.0 6.0 5.4 6.4 5.4 5.3 3/4 3/4 Unit Propagation delay time ns 3-state output enable time tpZL tpZH ns 3-state output disable time tpLZ tpHZ ns Output to output skew tosLH tosHL ns 1.0 Note 11: Parameter guaranteed by design. (tosLH = |tpLHm - tpLHn|, tosHL = |tpHLm - tpHLn|) Dynamic Switching Characteristics (Ta = 25C, input: tr = tf = 2.5 ns, RL = 500 W) Characteristics Quiet output maximum dynamic VOL Quiet output minimum dynamic VOL Symbol Test Condition VCC (V) VOLP VIH = 2.5 V, VIL = 0 V, CL =30pF VIH = 3.3 V, VIL = 0 V, CL =50pF VIH = 2.5 V, VIL = 0 V, CL =30pF VIH = 3.3 V, VIL = 0 V, CL =50pF 2.5 3.3 2.5 3.3 0.6 0.8 0.6 0.8 V V Typ. Unit |VOLV| Capacitive Characteristics (Ta = 25C) Characteristics Input capacitance Output capacitance Power dissipation capacitance Symbol CIN COUT CPD fIN = 10 MHz Test Condition VCC (V) 3/4 3/4 Typ. 3.3 3.3 (Note 12) 3.3 7 8 25 Unit pF pF pF Note 12: 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) = CPDVCCfIN + ICC/16 (per bit) 6 2002-10-1 TC74LCX16240FT AC Test Circuit 6.0 V or VCC 2 Open GND Measure CL RL Switch RL Parameter tpLH, tpHL tpLZ, tpZL tpHZ, tpZH 6.0 V VCC 2 Switch Open @VCC = 3.3 0.3 V @VCC = 2.5 0.2 V GND Output RL = 500 W Figure 1 AC Waveform tr 2.5 ns Input (A) tf 2.5 ns 90% VM 10% VIH GND Output (Y) tpHL VOH VM tpLH VOL Figure 2 tr 2.5 ns Output Enable ( OE ) tpLZ Output ( Y ) Low to Off to Low tpHZ tpLH, tpHL tf 2.5 ns 90% VM 10% tpZL 3.0 V or Vcc VM VX tpZH VOL VOH VM GND VIH GND Output ( Y ) High to Off to High Outputs enabled VY Outputs disabled Outputs enabled Figure 3 Symbol VIH VM VX VY tpLZ, tpHZ, tpZL, tpZH VCC 3.3 0.3 V 2.7 V 1.5 V VOL + 0.3 V VOH - 0.3 V 2.7 V 2.7 V 1.5 V VOL + 0.3 V VOH - 0.3 V 2.5 0.2 V VCC VCC/2 VOL + 0.15 V VOH - 0.15 V 7 2002-10-1 TC74LCX16240FT Package Dimensions Weight: 0.25 g (typ.) 8 2002-10-1 TC74LCX16240FT RESTRICTIONS ON PRODUCT USE 000707EBA * 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 this document shall be made at the customer's own risk. * The products described in this document are subject to the foreign exchange and foreign trade 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. 9 2002-10-1 |
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