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| TC74LCX373F/FT/FK TOSHIBA CMOS Digital Integrated Circuit Silicon Monolithic TC74LCX373F,TC74LCX373FT,TC74LCX373FK Low-Voltage Octal D-Type Latch with 5-V Tolerant Inputs and Outputs The TC74LCX373 is a high-performance CMOS octal D-type latch. 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. This 8 bit D-type latch is controlled by a latch enable input (LE) and an output enable input ( OE ). When the OE input is high, the eight outputs are in a high-impedance state. All inputs are equipped with protection circuits against static discharge. TC74LCX373F TC74LCX373FT Features * * * * * * * Low-voltage operation: VCC = 2.0 to 3.6 V High-speed operation: tpd = 8.0 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 Available in JEITA SOP, TSSOP and VSSOP (US) Power-down protection provided on all inputs and outputs Pin and function compatible with the 74 series (74AC/VHC/HC/F/ALS/LS etc.) 373 type TC74LCX373FK 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 2007-10-19 TC74LCX373F/FT/FK Pin Assignment (top view) IEC Logic Symbol OE LE 1 11 EN C1 OE Q0 D0 D1 Q1 Q2 D2 D3 Q3 1 2 3 4 5 6 7 8 9 20 19 18 17 16 15 14 13 12 11 VCC Q7 D7 D6 Q6 Q5 D5 D4 Q4 LE D0 D1 D2 D3 D4 D5 D6 D7 3 4 7 8 13 14 17 18 1D 2 5 6 9 12 15 16 19 Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7 GND 10 Truth Table Inputs OE H L L L LE X L H H D X X L H Outputs Z Qn L H X: Don't care Z: High impedance Qn: Q outputs are latched at the time when the LE input is taken to a low logic level. System Diagram D0 3 D D1 4 D D2 7 D D3 8 D D4 13 D D5 14 D D6 17 D D7 18 D LE 11 L Q L Q L Q L Q L Q L Q L Q L Q OE 1 2 Q0 5 Q1 6 Q2 9 Q3 12 Q4 15 Q5 16 Q6 19 Q7 2 2007-10-19 TC74LCX373F/FT/FK Absolute Maximum Ratings (Note 1) Characteristics Power supply voltage DC input voltage Symbol VCC VIN Rating -0.5 to 7.0 -0.5 to 7.0 -0.5 to 7.0 (Note 2) Unit V V DC output voltage VOUT -0.5 to VCC + 0.5 V (Note 3) Input diode current Output diode current DC output current Power dissipation DC VCC/ground current Storage temperature IIK IOK IOUT PD ICC/IGND Tstg -50 50 50 mA (Note 4) mA mA mW mA C 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: 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 Power supply voltage Input voltage Output voltage Symbol VCC VIN VOUT Rating 2.0 to 3.6 1.5 to 3.6 0 to 5.5 0 to 5.5 0 to VCC 24 12 -40 to 85 Unit V V (Note 3) (Note 4) (Note 5) (Note 6) V (Note 2) Output current Operating temperature Input rise and fall time IOH/IOL Topr dt/dv mA C 0 to 10 (Note 7) ns/V 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: Data retention only Note 3: Output in OFF state Note 4: High or low state Note 5: VCC = 3.0 to 3.6 V Note 6: VCC = 2.7 to 3.0 V Note 7: VIN = 0.8 to 2.0 V, VCC = 3.0 V 3 2007-10-19 TC74LCX373F/FT/FK Electrical Characteristics DC Characteristics (Ta = -40 to 85C) 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 = -12 mA IOH = -18 mA Output voltage IOH = -24 mA IOL = 100 A 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 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 0.4 0.55 5.0 5.0 A A A 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 10.0 10.0 A 500 AC Characteristics (Ta = -40 to 85C) Characteristics Propagation delay time (D-Q) Propagation delay time (LE-Q) Output enable time Symbol tpLH tpHL tpLH tpHL tpZL tpZH tpLZ tpHZ tw (H) Test Condition VCC (V) 2.7 3.3 0.3 2.7 3.3 0.3 2.7 3.3 0.3 2.7 3.3 0.3 2.7 3.3 0.3 2.7 3.3 0.3 2.7 3.3 0.3 (Note) 2.7 3.3 0.3 Min Max 9.0 8.0 9.5 8.5 9.5 8.5 8.5 7.5 Unit Figure 1, Figure 2 1.5 ns Figure 1, Figure 2 1.5 ns Figure 1, Figure 3 1.5 ns Output disable time Minimum pulse width (LE) Minimum setup time Figure 1, Figure 3 1.5 4.0 3.3 2.5 2.5 1.5 1.5 ns Figure 1, Figure 2 ns ts Figure 1, Figure 2 ns Minimum hold time th tosLH tosHL Figure 1, Figure 2 ns Output to output skew 1.0 ns Note: Parameter guaranteed by design. (tosLH = |tpLHm - tpLHn|, tosHL = |tpHLm - tpHLn|) 4 2007-10-19 TC74LCX373F/FT/FK Dynamic Switching Characteristics (Ta = 25C, input: tr = tf = 2.5 ns, CL = 50 pF, RL = 500 ) Characteristics Quiet output maximum dynamic VOL Quiet output minimum dynamic VOL Symbol VOLP |VOLV| Test Condition VIH = 3.3 V, VIL = 0 V VIH = 3.3 V, VIL = 0 V VCC (V) 3.3 3.3 Typ. 0.8 0.8 Unit V V Capacitive Characteristics (Ta = 25C) Characteristics Input capacitance Output capacitance Power dissipation capacitance Symbol CIN COUT CPD fIN = 10 MHz Test Condition VCC (V) 3.3 3.3 (Note) 3.3 Typ. 7 8 25 Unit pF pF pF Note: 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) = CPDVCCfIN + ICC/8 (per bit) AC Test Circuit Switch RL Open 6.0 V GND Measure Parameter tpLH, tpHL tpLZ, tpZL tpHZ, tpZH tw, ts, th, Switch Open 6.0 V GND Open Output CL RL CL = 50 pF RL = 500 Figure 1 AC Waveform tf 2.5 ns Input (LE) tr 2.5 ns Input (D) 90% 1.5 V 10% ts (H) Output (Q) th (H) ts (L) th (L) VOH 1.5 V tpLH tpHL 1.5 V tpHL tpLH VOL tr 2.5 ns 90% 1.5 V 10% tf 2.5 ns 2.7 V 1.5 V GND tw (H) 2.7 V 1.5 V GND Figure 2 tpLH, tpHL, tw, ts, th 5 2007-10-19 TC74LCX373F/FT/FK tr 2.5 ns Output Enable ( OE ) tpLZ Output (Q) Low to Off to Low tpHZ Output (Q) High to Off to High Outputs enabled tf 2.5 ns 90% 1.5 V 10% tpZL 3.0 V 1.5 V VOL + 0.3 V VOH - 0.3 V tpZH VOL VOH 1.5 V GND Outputs disabled Outputs enabled 2.7 V GND Figure 3 tpLZ, tpHZ, tpZL, tpZH 6 2007-10-19 TC74LCX373F/FT/FK Package Dimensions Weight: 0.22 g (typ.) 7 2007-10-19 TC74LCX373F/FT/FK Package Dimensions Weight: 0.08 g (typ.) 8 2007-10-19 TC74LCX373F/FT/FK Package Dimensions Weight: 0.03 g (typ.) 9 2007-10-19 TC74LCX373F/FT/FK 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. 10 2007-10-19 |
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