TC74LCX240F/FW/FT TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic TC74LCX240F,TC74LCX240FW,TC74LCX240FT Low-Voltage Octal Bus Buffer (inverted) with 5-V Tolerant Inputs and Outputs The TC74LCX240F/FW/FT is a high-performance CMOS octal bus buffer. Designed for use in 3.3-V systems, it achieves high-speed operation while maintaining the CMOS low power dissipation. The device is designed for low-voltage (3.3 V) VCC applications, but it could be used to interface to 5-V supply environment for both inputs and outputs. The 74LCX240F/FW/FT is an inverting 3-state buffer having two active-low output enables. This device is designed to be used with 3-state memory address drivers, etc. All inputs are equipped with protection circuits against static discharge. Note: xxxFW (JEDEC SOP) is not available in Japan. TC74LCX240F TC74LCX240FW Features · Low-voltage operation: VCC = 2.0 to 3.6 V · High-speed operation: tpd = 6.5 ns (max) (VCC = 3.0 to 3.6 V) · Ouput current: |IOH|/IOL = 24 mA (min) (VCC = 3.0 V) · Latch-up performance: ±500 mA · Available in JEDEC SOP, JEITA SOP and TSSOP · Power-down protection provided on all inputs and outputs · Pin and function compatible with the 74 series TC74LCX240FT (74AC/VHC/HC/F/ALS/LS etc.) 240 type Weight SOP20-P-300-1.27: 0.22 g (typ.) SOL20-P-300-1.27: 0.46 g (typ.) TSSOP20-P-0044-0.65: 0.08 g (typ.) 1 2002-01-11 TC74LCX240F/FW/FT Pin Assignment (top view) IEC Logic Symbol 1 20 VCC 1A1 2 19 2OE 2Y 4 3 18 1Y1 1A2 4 17 2A4 2Y3 5 16 1Y 2 1OE 1OE 1A1 1A2 1A3 1A4 2OE 1A3 6 15 2A3 2Y 2 7 14 1Y 3 1A4 8 13 2A2 2 Y1 9 12 1Y 4 GND 10 11 2A1 2A1 2A2 2A3 2A4 1 EN 18 16 14 12 2 4 6 8 19 1Y1 1Y 2 1Y 3 1Y 4 EN 11 13 15 17 9 7 5 3 2 Y1 2Y 2 2Y3 2Y 4 Truth Table Inputs Outputs OE An L L H L H L H X Z X: Don’t care Z: High impedance Maximum Ratings Characteristics Symbol Rating Unit Power supply voltage VCC -0.5 to 7.0 V DC input voltage VIN -0.5 to 7.0 V -0.5 to 7.0 (Note 1) DC output voltage VOUT -0.5 to VCC + 0.5 V (Note 2) Input diode current IIK -50 Output diode current IOK ±50 DC output current IOUT ±50 mA Power dissipation PD 180 mW ICC/IGND ±100 mA Tstg -65 to 150 °C DC VCC/ground current Storage temperature mA (Note 3) mA 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 2 2002-01-11 TC74LCX240F/FW/FT Recommended Operating Conditions Characteristics Symbol Power supply voltage Rating 2.0 to 3.6 VCC Input voltage 0 to 5.5 Topr Input rise and fall time dt/dv V 0 to VCC (Note 6) IOH/IOL Operating temperature V 0 to 5.5 (Note 5) VOUT Output current V 1.5 to 3.6 (Note 4) VIN Output voltage Unit ±24 (Note 7) ±12 (Note 8) -40 to 85 0 to 10 (Note 9) mA °C ns/V 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: VIN = 0.8 to 2.0 V, VCC = 3.0 V Electrical Characteristics DC Characteristics (Ta = -40 to 85°C) Characteristics Symbol Test Condition Min Max Unit VCC (V) Input voltage H-level VIH ¾ 2.7 to 3.6 2.0 ¾ L-level VIL ¾ 2.7 to 3.6 ¾ 0.8 IOH = -100 mA 2.7 to 3.6 VCC - 0.2 ¾ IOH = -12 mA 2.7 2.2 ¾ IOH = -18 mA 3.0 2.4 ¾ IOH = -24 mA 3.0 2.2 ¾ IOL = 100 mA 2.7 to 3.6 ¾ 0.2 IOL = 12 mA 2.7 ¾ 0.4 IOL = 16 mA 3.0 ¾ 0.4 IOL = 24 mA 3.0 ¾ 0.55 2.7 to 3.6 ¾ ±5.0 mA 2.7 to 3.6 ¾ ±5.0 mA VIN/VOUT = 5.5 V 0 ¾ 10.0 mA VIN = VCC or GND 2.7 to 3.6 ¾ 10.0 VIN/VOUT = 3.6 to 5.5 V 2.7 to 3.6 ¾ ±10.0 VIH = VCC - 0.6 V 2.7 to 3.6 ¾ 500 H-level VOH VIN = VIH or VIL Output voltage L-level VOL Input leakage current IIN 3-state output OFF state current IOZ Power-off leakage current IOFF Quiescent supply current ICC Increase in ICC per input DICC VIN = VIH or VIL VIN = 0 to 5.5 V VIN = VIH or VIL VOUT = 0 to 5.5 V 3 V V mA 2002-01-11 TC74LCX240F/FW/FT AC Characteristics (Ta = -40 to 85°C) Characteristics Symbol Test Condition Min Max 2.7 ¾ 7.5 3.3 ± 0.3 1.5 6.5 Unit VCC (V) Propagation delay time tpLH Figure 1, Figure 2 tpHL Output enable time tpZL Figure 1, Figure 3 tpZH Output disable time tpLZ Figure 1, Figure 3 tpHZ Output to output skew tosLH (Note 10) tosHL 2.7 ¾ 9.0 3.3 ± 0.3 1.5 8.0 2.7 ¾ 8.0 3.3 ± 0.3 1.5 7.0 2.7 ¾ ¾ 3.3 ± 0.3 ¾ 1.0 ns ns ns ns Note 10: Parameter guaranteed by design. (tosLH = |tpLHm - tpLHn|, tosHL = |tpHLm - tpHLn|) Dynamic Switching Characteristics (Ta = 25°C, input: tr = tf = 2.5 ns, CL = 50 pF, RL = 500 W) Characteristics Symbol Test Condition Typ. Unit VCC (V) Quiet output maximum dynamic VOL VOLP VIH = 3.3 V, VIL = 0 V 3.3 0.8 V Quiet output minimum dynamic VOL |VOLV| VIH = 3.3 V, VIL = 0 V 3.3 0.8 V Typ. Unit Capacitive Characteristics (Ta = 25°C) Characteristics Symbol Test Condition VCC (V) Input capacitance Output capacitance Power dissipation capacitance CIN ¾ 3.3 7 pF COUT ¾ 3.3 8 pF 3.3 25 pF CPD fIN = 10 MHz (Note 11) Note 11: CPD is defined as the value of the internal equivalent capacitance which is calculated from the operating current consumption. Average operating current can be obtained by the equation: ICC (opr) = CPD･VCC･fIN + ICC/8 (per bit) 4 2002-01-11 TC74LCX240F/FW/FT AC Test Circuit RL Switch RL Measure CL Output Open 6.0 V GND CL = 50 pF Parameter Switch tpLH, tpHL Open tpLZ, tpZL 6.0 V tpHZ, tpZH GND RL = 500 W Figure 1 AC Waveform tf 2.5 ns tr 2.5 ns 2.7 V 90% 1.5 V 10% Input (A) GND VOH Output (Y ) 1.5 V tpLH Figure 2 VOL tpHL tpLH, tpHL tr 2.5 ns tf 2.5 ns 2.7 V 90% 1.5 V Output Enable ( OE ) 10% tpLZ GND tpZL 3.0 V Output ( Y ) Low to Off to Low 1.5 V tpHZ VOL + 0.3 V VOL tpZH VOH VOH - 0.3 V Output ( Y ) High to Off to High 1.5 V GND Outputs enabled Figure 3 Outputs disabled Outputs enabled tpLZ, tpHZ, tpZL, tpZH 5 2002-01-11 TC74LCX240F/FW/FT Package Dimensions Weight: 0.22 g (typ.) 6 2002-01-11 TC74LCX240F/FW/FT Package Dimensions Note: This package is not available in japan. Weight: 0.46 g (typ.) 7 2002-01-11 TC74LCX240F/FW/FT Package Dimensions Weight: 0.08 g (typ.) 8 2002-01-11 TC74LCX240F/FW/FT 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 2002-01-11