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| TC74VCX2541FT/FK/FTG TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic TC74VCX2541FT, TC74VCX2541FK, TC74VCX2541FTG Low-Voltage Octal Bus Buffer with 3.6-V Tolerant Inputs and Outputs The TC74VCX2541 is a high-performance CMOS octal bus buffer. Designed for use in 1.8-V, 2.5-V or 3.3-V systems, it achieves high-speed operation while maintaining the CMOS low power dissipation. It is also designed with overvoltage tolerant inputs and outputs up to 3.6 V. This device is a non-inverting 3-state buffer having two active-low output enables. When either OE1 or OE2 are high, the terminal outputs are in the high-impedance state. This device is designed to be used with 3-state memory address drivers, etc. The 26- series resistor helps reducing output overshoot and undershoot without external resistor. All inputs are equipped with protection circuits against static discharge. TC74VCX2541FT TC74VCX2541FK Features (Note 1) * * * 26- series resistors on outputs. Low-voltage operation: VCC = 1.8 to 3.6 V High-speed operation: tpd = 4.4 ns (max) (VCC = 3.0 to 3.6 V) : tpd = 5.6 ns (max) (VCC = 2.3 to 2.7 V) : tpd = 9.8 ns (max) (VCC = 1.8 V) * Output current : IOH/IOL = 12 mA (min) (VCC = 3.0 V) : IOH/IOL = 8 mA (min) (VCC = 2.3 V) : IOH/IOL = 4 mA (min) (VCC = 1.8 V) * * * Latch-up performance: -300 mA ESD performance: Machine model 200 V Human body model 2000 V Package: TSSOP VSSOP (US) VQON * 3.6-V tolerant function and power-down protection provided on all inputs and outputs VQON20-P-0404-0.50 TC74VCX2541FTG Weight TSSOP20-P-0044-0.65A VSSOP20-P-0030-0.50 VQON20-P-0404-0.50 : 0.08 g (typ.) : 0.03 g (typ.) : 0.0145g (typ.) Note 1: When mounting VQON package, the type of recommended flux is RA or RMA. 1 2007-10-19 TC74VCX2541FT/FK/FTG Pin Assignment (top view) FT(TSSOP20-P-0044-0.65) FK(VSSOP20-P-0030-0.50) FTG(VQON20-P-0404-0.50) A1 OE1 VCC OE2 Y1 20 19 18 17 16 OE1 A1 A2 A3 A4 A5 A6 A7 A8 1 2 3 4 5 6 7 8 9 20 19 18 17 16 15 14 13 12 11 VCC OE2 Y1 Y2 Y3 Y4 Y5 Y6 Y7 Y8 A2 A3 A4 A5 A6 1 2 3 4 5 15 14 13 12 11 Y2 Y3 Y4 Y5 Y6 6 A7 7 8 9 10 Y7 A8 GND Y8 GND 10 IEC Logic Symbol OE1 OE2 (1) (19) & EN A1 A2 A3 A4 A5 A6 A7 A8 (2) (3) (4) (5) (6) (7) (8) (9) (18) (17) (16) (15) (14) (13) (12) (11) Y1 Y2 Y3 Y4 Y5 Y6 Y7 Y8 Truth Table Inputs Outputs An X X H L Z Z H L OE1 H X L L OE2 X H L L X: Don't care Z: High impedance 2 2007-10-19 TC74VCX2541FT/FK/FTG Absolute Maximum Ratings (Note 1) Characteristics Power supply voltage DC input voltage DC output voltage Input diode current Output diode current DC output current Power dissipation DC VCC/ground current Storage temperature Symbol VCC VIN VOUT IIK IOK IOUT PD ICC/IGND Tstg Rating -0.5 to 4.6 -0.5 to 4.6 -0.5 to 4.6 (Note 2) -0.5 to VCC + 0.5 Unit V V V mA (Note 4) mA mA mW mA C (Note 3) -50 50 50 180 100 -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: 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 Power supply voltage Input voltage Output voltage Symbol VCC VIN VOUT Rating 1.8 to 3.6 1.2 to 3.6 (Note 2) -0.3 to 3.6 Unit V V V 0 to 3.6 (Note 3) 0 to VCC (Note 4) 12 (Note 5) (Note 6) (Note 7) C (Note 8) ns/V mA Output current Operating temperature Input rise and fall time IOH/IOL Topr dt/dv 8 4 -40 to 85 0 to 10 Note 1: The operating ranges are required to ensure the normal operation of the device. Unused inputs and bus inputs must be tied to either VCC or GND. Please connect both bus inputs and the bus outputs with VCC or GND when the I/O of the bus terminal changes by the function. In this case, please note that the output is not short-circuited. Note 2: Data retention only Note 3: OFF state Note 4: High or low state Note 5: VCC = 3.0 to 3.6 V Note 6: VCC = 2.3 to 2.7 V Note 7: VCC = 1.8 V Note 8: VIN = 0.8 to 2.0 V, VCC = 3.0 V 3 2007-10-19 TC74VCX2541FT/FK/FTG Electrical Characteristics < DC Characteristics (Ta = -40 to 85C, 2.7 V < VCC = 3.6 V) Characteristics H-level L-level Symbol VIH VIL Test Condition VCC (V) 2.7 to 3.6 2.7 to 3.6 Min 2.0 Max Unit Input voltage V 0.8 IOH = -100 A H-level VOH VIN = VIH or VIL IOH = -6 mA IOH = -8 mA Output voltage IOH = -12 mA IOL = 100 A L-level VOL VIN = VIH or VIL IOL = 6 mA IOL = 8 mA IOL = 12 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 ICC 2.7 to 3.6 2.7 3.0 3.0 2.7 to 3.6 2.7 3.0 3.0 2.7 to 3.6 2.7 to 3.6 0 2.7 to 3.6 2.7 to 3.6 2.7 to 3.6 VCC - 0.2 2.2 2.4 2.2 V 0.2 0.4 0.55 0.8 5.0 10.0 A A A VIN = 0 to 3.6 V VIN = VIH or VIL VOUT = 0 to 3.6 V VIN, VOUT = 0 to 3.6 V VIN = VCC or GND VCC < (VIN, VOUT) < 3.6 V = = VIH = VCC - 0.6 V 10.0 20.0 20.0 A 750 < < DC Characteristics (Ta = -40 to 85C, 2.3 V = VCC = 2.7 V) Characteristics H-level L-level Symbol VIH VIL Test Condition VCC (V) 2.3 to 2.7 2.3 to 2.7 Min 1.6 Max Unit Input voltage V 0.7 IOH = -100 A H-level Output voltage VOH VIN = VIH or VIL IOH = -4 mA IOH = -6 mA IOH = -8 mA IOL = 100 A L-level VOL VIN = VIH or VIL IOL = 6 mA IOL = 8 mA Input leakage current 3-state output OFF state current Power-off leakage current Quiescent supply current IIN IOZ IOFF ICC VIN = 0 to 3.6 V VIN = VIH or VIL VOUT = 0 to 3.6 V VIN, VOUT = 0 to 3.6 V VIN = VCC or GND VCC < (VIN, VOUT) < 3.6 V = = 2.3 to 2.7 2.3 2.3 2.3 2.3 to 2.7 2.3 2.3 2.3 to 2.7 2.3 to 2.7 0 2.3 to 2.7 2.3 to 2.7 VCC - 0.2 2.0 1.8 1.7 V 0.2 0.4 0.6 5.0 10.0 A A A A 10.0 20.0 20.0 4 2007-10-19 TC74VCX2541FT/FK/FTG < DC Characteristics (Ta = -40 to 85C, 1.8 V = VCC < 2.3 V) Characteristics H-level Input voltage L-level VIL Symbol VIH Test Condition VCC (V) 1.8 to 2.3 1.8 to 2.3 Min 0.7 x VCC Max Unit 0.2 x VCC V H-level Output voltage L-level Input leakage current 3-state output OFF state current Power-off leakage current Quiescent supply current VOH VIN = VIH or VIL IOH = -100 A IOH = -4 mA 1.8 1.8 1.8 1.8 1.8 1.8 0 1.8 1.8 VCC - 0.2 1.4 V VOL IIN IOZ IOFF ICC VIN = VIH or VIL VIN = 0 to 3.6 V VIN = VIH or VIL VOUT = 0 to 3.6 V VIN, VOUT = 0 to 3.6 V VIN = VCC or GND IOL = 100 A IOL = 4 mA 0.2 0.3 5.0 10.0 A A A A 10.0 20.0 20.0 VCC < (VIN, VOUT) < 3.6 V = = AC Characteristics (Ta = -40 to 85C, input: tr = tf = 2.0 ns, CL = 30 pF, RL = 500 ) (Note 1) Characteristics Symbol Test Condition VCC (V) 1.8 Figure 1, Figure 2 2.5 0.2 3.3 0.3 1.8 Figure 1, Figure 3 2.5 0.2 3.3 0.3 1.8 Figure 1, Figure 3 2.5 0.2 3.3 0.3 1.8 (Note 2) 2.5 0.2 3.3 0.3 Min 1.5 0.8 0.6 1.5 0.8 0.6 1.5 0.8 0.6 Max 9.8 5.6 4.4 9.8 6.5 5.0 7.7 4.3 3.9 0.5 0.5 0.5 Unit Propagation delay time tpLH tpHL ns 3-state output enable time tpZL tpZH ns 3-state output disable time tpLZ tpHZ ns Output to output skew tosLH tosHL ns Note 1: For CL = 50 pF, add approximately 300 ps to the AC maximum specification. Note 2: Parameter guaranteed by design. (tosLH = |tpLHm - tpLHn|, tosHL = |tpHLm - tpHLn|) 5 2007-10-19 TC74VCX2541FT/FK/FTG Dynamic Switching Characteristics (Ta = 25C, input: tr = tf = 2.0 ns, CL = 30 pF) Characteristics Symbol Test Condition VIH = 1.8 V, VIL = 0 V Quiet output maximum dynamic VOL VOLP VIH = 2.5 V, VIL = 0 V VIH = 3.3 V, VIL = 0 V VIH = 1.8 V, VIL = 0 V Quiet output minimum dynamic VOL VOLV VIH = 2.5 V, VIL = 0 V VIH = 3.3 V, VIL = 0 V VIH = 1.8 V, VIL = 0 V Quiet output minimum dynamic VOH VOHV VIH = 2.5 V, VIL = 0 V VIH = 3.3 V, VIL = 0 V (Note) (Note) (Note) (Note) (Note) (Note) (Note) (Note) (Note) VCC (V) 1.8 2.5 3.3 1.8 2.5 3.3 1.8 2.5 3.3 Typ. 0.15 0.25 0.35 -0.15 -0.25 -0.35 Unit V V 1.55 2.05 2.65 V Note: Parameter guaranteed by design. Capacitive Characteristics (Ta = 25C) Characteristics Input capacitance Output capacitance Power dissipation capacitance Symbol CIN CO CPD fIN = 10 MHz Test Condition VCC (V) 1.8, 2.5, 3.3 1.8, 2.5, 3.3 (Note) 1.8, 2.5, 3.3 Typ. 6 7 20 Unit pF pF pF Note: 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/8 (per bit) 6 2007-10-19 TC74VCX2541FT/FK/FTG AC Test Circuit 6.0 V or VCC x 2 Open GND Measure CL RL Switch RL Parameter tpLH, tpHL tpLZ, tpZL tpHZ, tpZH 6.0 V VCC x 2 Switch Open @VCC = 3.3 0.3 V @VCC = 2.5 0.2 V @VCC = 1.8 V GND Output CL = 30 pF RL = 500 Figure 1 AC Waveform tr 2.0 ns Input (A) tf 2.0 ns 90% VM VIH 10% GND VOH VM tpLH tpHL VOL Output (Y) Figure 2 tpLH, tpHL 7 2007-10-19 TC74VCX2541FT/FK/FTG tr 2.0 ns Output Enable Control ( OE ) tpLZ Output (Y) Low to Off to Low tpHZ Output (Y) High to Off to High Outputs enabled tf 2.0 ns 90% VM VIH 10% tpZL 3.0 V or VCC VM VX tpZH VOL VOH VM GND Outputs disabled Outputs enabled GND VY Figure 3 tpLZ, tpHZ, tpZL, tpZH Symbol VIH VM VX VY VCC 3.3 0.3 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 1.8 V VCC VCC/2 VOL + 0.15 V VOH - 0.15 V 8 2007-10-19 TC74VCX2541FT/FK/FTG Package Dimensions Weight: 0.08 g (typ.) 9 2007-10-19 TC74VCX2541FT/FK/FTG Package Dimensions Weight: 0.03 g (typ.) 10 2007-10-19 TC74VCX2541FT/FK/FTG Package Dimensions VQON20-P-0404-0.50 Unit: mm Weight: 0.0145 g (typ.) 11 2007-10-19 TC74VCX2541FT/FK/FTG 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. 12 2007-10-19 |
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