Revised February 2005 74LCX27 Low Voltage Triple 3-Input NOR Gate with 5V Tolerant Inputs General Description Features The LCX27 contains three 3-input NOR gates. The inputs tolerate voltages up to 7V allowing the interface of 5V systems to 3V systems. ■ 5V tolerant inputs The 74LCX27 is fabricated with advanced CMOS technology to achieve high speed operation while maintaining CMOS low power dissipation. ■ 2.3V–3.6V VCC specifications provided ■ 4.9 ns tPD max (VCC 3.3V), 10 PA ICC max ■ Power down high impedance inputs and outputs ■ r24 mA output drive (VCC 3.0V) ■ Implements patented noise/EMI reduction circuitry ■ Latch-up performance exceeds 500 mA ■ ESD performance: Human body model ! 2000V Machine model ! 200V Ordering Code: Order Number 74LCX27M 74LCX27SJ Package Number Package Description M14A 14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow M14D Pb-Free 14-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide 74LCX27MTC MTC14 14-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide 74LCX27MTCX_NL (Note 1) MTC14 Pb-Free 14-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Pb-Free package per JEDEC J-STD-020B. Note 1: “_NL” indicates Pb-Free package (per JEDEC J-STD-020B). Device available in Tape and Reel only. © 2005 Fairchild Semiconductor Corporation DS500454 www.fairchildsemi.com 74LCX27 Low Voltage Triple 3-Input NOR Gate with 5V Tolerant Inputs February 2001 74LCX27 Logic Symbol Connection Diagram IEEE/IEC Pin Descriptions Truth Table Pin Names Description A n , B n , Cn Inputs On Outputs Inputs Cn On H X X L X H X L X X H L L 2 Output Bn An H www.fairchildsemi.com An Bn Cn On HIGH Voltage Level L L L LOW Voltage Level H X Immaterial Symbol Parameter VCC Supply Voltage VI DC Input Voltage VO DC Output Voltage IIK DC Input Diode Current IOK DC Output Diode Current Value IO DC Output Source/Sink Current ICC DC Supply Current per Supply Pin IGND DC Ground Current per Ground Pin TSTG Storage Temperature Conditions 0.5 to 7.0 0.5 to 7.0 0.5 to VCC 0.5 50 50 50 r50 r100 r100 65 to 150 Units V V Output in HIGH or LOW State (Note 3) VI GND V mA VO GND mA VO ! VCC mA mA mA qC Recommended Operating Conditions (Note 4) Symbol VCC Parameter Min Max Operating 2.0 3.6 Data Retention 1.5 3.6 Supply Voltage VI Input Voltage VO Output Voltage IOH/IOL Output Current HIGH or LOW State TA Free-Air Operating Temperature 't/'V Input Edge Rate, VIN 0.8V–2.0V, VCC VCC 3.0V 3.6V VCC 2.7V - 3.0V VCC 2.3V - 2.7V Units V 0 5.5 V 0 VCC V r24 r12 r8 mA 40 85 qC 0 10 ns/V 3.0V Note 2: The Absolute Maximum Ratings are those values beyond which the safety of the device cannot be guaranteed. The device should not be operated at these limits. The parametric values defined in the Electrical Characteristics tables are not guaranteed at the Absolute Maximum Ratings. The “Recommended Operating Conditions” table will define the conditions for actual device operation. Note 3: IO Absolute Maximum Rating must be observed. Note 4: Unused inputs must be held HIGH or LOW. They may not float. DC Electrical Characteristics Symbol VIH VIL VOH VOL Parameter Conditions HIGH Level Input Voltage LOW Level Input Voltage HIGH Level Output Voltage LOW Level Output Voltage Min 2.3 2.7 1.7 2.7 3.6 2.0 40qC to 85qC V 2.3 2.7 0.7 0.8 100 PA 8 mA 2.3 3.6 2.3 1.8 IOH 12 mA 2.7 2.2 IOH 18 mA 3.0 2.4 2.2 Units Max 2.7 3.6 IOH V VCC 0.2 V IOH 24 mA 3.0 IOL 100 PA 2.3 3.6 IOL 8mA 2.3 0.6 IOL 12 mA 2.7 0.4 IOL 16 mA 3.0 0.4 IOL 24 mA 0.2 V 3.0 0.55 2.3 3.6 r5.0 PA 0 10 PA VCC or GND 2.3 3.6 10 3.6V d VI d 5.5V 2.3 3.6 r10 VCC 0.6V 2.3 3.6 500 Input Leakage Current 0 d VI d 5.5V IOFF Power-Off Leakage Current VI or VO ICC Quiescent Supply Current VI Increase in ICC per Input TA (V) IOH II 'ICC VCC VIH 5.5V 3 PA PA www.fairchildsemi.com 74LCX27 Absolute Maximum Ratings(Note 2) 74LCX27 AC Electrical Characteristics TA Symbol Parameter VCC VCC 2.7V 50pF CL 50pF CL tPHL Propagation Delay tPLH tOSHL 40qC to 85qCF, RL 3.3V r 0.3V 500: VCC 2.5V r 0.2V CL Min Max Min Max Min Max 1.5 4.9 1.5 5.8 1.5 5.9 1.5 4.9 1.5 5.8 1.5 5.9 Output to Output Skew (Note 5) 1.0 tOSLH Units 30pF ns ns 1.0 Note 5: Skew is defined as the absolute value of the difference between the actual propagation delay for any two separate outputs of the same device. The specification applies to any outputs switching in the same direction, either HIGH-to-LOW (tOSHL) or LOW-to-HIGH (tOSLH). Dynamic Switching Characteristics Symbol VOLP VOLV Parameter Quiet Output Dynamic Peak VOL Quiet Output Dynamic Valley V OL VCC Conditions TA 25qC (V) Typical CL 50 pF, VIH 3.3V, VIL 0V 3.3 0.8 CL 30 pF, VIH 2.5V, VIL 0V 2.5 0.6 CL 50 pF, VIH 3.3V, VIL 0V 3.3 0.8 CL 30 pF, VIH 2.5V, VIL 0V 2.5 0.6 Unit V V Capacitance Symbol Parameter Conditions CIN Input Capacitance VCC Open, VI COUT Output Capacitance VCC 3.3V, VI 0V or VCC CPD Power Dissipation Capacitance VCC 3.3V, VI 0V or VCC, f www.fairchildsemi.com 4 0V or VCC 10 MHz Typical Units 7 pF 8 pF 25 pF 74LCX27 AC LOADING and WAVEFORMS Generic for LCX Family FIGURE 1. AC Test Circuit (CL includes probe and jig capacitance) Test Switch tPLH, tPHL Open tPZL, tPLZ 6V at VCC 3.3 r 0.3V VCC x 2 at VCC 2.5 r 0.2V tPZH,tPHZ GND Waveform for Inverting and Non-Inverting Functions 3-STATE Output High Enable and Disable Times for Logic Propagation Delay. Pulse Width and trec Waveforms Setup Time, Hold Time and Recovery Time for Logic trise and tfall 3-STATE Output Low Enable and Disable Times for Logic FIGURE 2. Waveforms (Input Characteristics; f =1MHz, tr = tf = 3ns) Symbol VCC 3.3V r 0.3V 2.7V 2.5V r 0.2V Vmi 1.5V 1.5V VCC/2 Vmo 1.5V 1.5V VCC/2 Vx VOL 0.3V VOL 0.3V VOL 0.15V Vy VOH 0.3V VOH 0.3V VOH 0.15V 5 www.fairchildsemi.com 74LCX27 Schematic Diagram Generic for LCX Family www.fairchildsemi.com 6 74LCX27 Physical Dimensions inches (millimeters) unless otherwise noted 14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow Package Number M14A 7 www.fairchildsemi.com 74LCX27 Physical Dimensions inches (millimeters) unless otherwise noted (Continued) Pb-Free 14-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide Package Number M14D www.fairchildsemi.com 8 74LCX27 Low Voltage Triple 3-Input NOR Gate with 5V Tolerant Inputs Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 14-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide Package Number MTC14 Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and Fairchild reserves the right at any time without notice to change said circuitry and specifications. LIFE SUPPORT POLICY FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 2. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. www.fairchildsemi.com 9 www.fairchildsemi.com