Revised February 2002 74LCX38 Low Voltage Quad 2-Input NAND Gate (Open Drain) with 5V Tolerant Inputs General Description Features The LCX38 contains four 2-input open drain NAND gates. The inputs tolerate voltages up to 7V allowing the interface of 5V systems to 3V systems. ■ 5V tolerant inputs The 74LCX38 is fabricated with advanced CMOS technology to achieve high speed operation while maintaining CMOS low power dissipation. ■ 2.3V to 3.6V VCC specifications provided ■ 5.0 ns tPD max (VCC = 3.3V), 10 µA ICC max ■ Power down high impedance inputs and outputs ■ 24 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 > 150V Ordering Code: Order Number Package Number 74LCX38M 74LCX38SJ 74LCX38MTC M14A M14D MTC14 Package Description 14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow 14-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide 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. Logic Symbol Connection Diagram IEEE/IEC Pin Descriptions Pin Names Description An , Bn Inputs On Outputs © 2002 Fairchild Semiconductor Corporation DS012574 www.fairchildsemi.com 74LCX38 Low Voltage Quad 2-Input NAND Gate (Open Drain) with 5V Tolerant Inputs October 1995 74LCX38 Absolute Maximum Ratings(Note 1) Symbol Parameter Value Conditions Units VCC Supply Voltage −0.5 to +7.0 VI DC Input Voltage −0.5 to +7.0 VO DC Output Voltage −0.5 to +7.0 IIK DC Input Diode Current −50 VI < GND IOK DC Output Diode Current −50 VO < GND IO DC Output Sink Current (IOL) +50 mA ICC DC Supply Current per Supply Pin ±100 mA IGND DC Ground Current per Ground Pin ±100 mA TSTG Storage Temperature −65 to +150 °C V V Output in HIGH or LOW State (Note 2) V mA mA Recommended Operating Conditions (Note 3) Symbol VCC Parameter Supply Voltage Min Max Operating 2.0 3.6 Data Retention 1.5 3.6 Units V VI Input Voltage 0 5.5 V VO Output Voltage 0 5.5 V IOL Output Current TA Free-Air Operating Temperature ∆t/∆V Input Edge Rate, VIN = 0.8V–2.0V, VCC = 3.0V VCC = 3.0V − 3.6V 24 VCC = 2.7V − 3.0V 12 VCC = 2.3V − 2.7V 8 mA −40 85 °C 0 10 ns/V Note 1: The Absolute Maximum Ratings are those beyond which the safety of the device cannot be guaranteed. The device should not be operating 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 2: IO Absolute Maximum Rating must be observed. Note 3: Unused inputs must be held HIGH or LOW. They may not float. DC Electrical Characteristics Symbol VIH VIL VOL Parameter Conditions HIGH Level Input Voltage LOW Level Input Voltage LOW Level Output Voltage IOL = 100µA VCC TA = −40°C to +85°C (V) Min 2.3 − 2.7 1.7 2.7 − 3.6 2.0 Max Units V 2.3 − 2.7 0.7 2.3 − 3.6 0.8 2.3 − 3.6 0.2 IOL = 8mA 2.3 0.6 IOL = 12 mA 2.7 0.4 IOL = 16 mA 3.0 0.4 V V IOL = 24 mA 3.0 0.55 II Input Leakage Current 0 ≤ VI ≤ 5.5V 2.3 − 3.6 ±5.0 µA IOFF Power-Off Leakage Current VI or VO = 5.5V 0 10 µA ICC Quiescent Supply Current VI = VCC or GND 2.3 − 3.6 10 3.6V ≤ VI ≤ 5.5V 2.3 − 3.6 ±10 ∆ICC Increase in ICC per Input VIH = VCC −0.6V 2.3 − 3.6 500 µA IOHZ Off State Current VO = 5.5 2 - 3.6 10 µA www.fairchildsemi.com 2 µA TA = −40°C to +85°C, RL = 500 Ω Symbol tPZL Parameter Propagation Delay Time tPLZ VCC = 3.3V ± 0.3V VCC = 2.7V VCC = 2.5V ± 0.2V CL= 50 pF CL = 50 pF CL = 30 pF Min Max Min Max Min 1.5 5.0 1.5 5.5 1.5 6.5 1.5 5.0 1.5 5.5 1.5 6.0 tOSHL Output to Output Skew 1.0 tOSLH (Note 4) 1.0 Units Max ns ns Note 4: 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 VCC TA = 25°C (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 Parameter Quiet Output Dynamic Peak VOL Quiet Output Dynamic Valley VOL Conditions Units V V Capacitance Typical Units CIN Symbol Input Capacitance Parameter VCC = Open, VI = 0V or VCC Conditions 7 pF COUT Output Capacitance VCC = 3.3V, VI = 0V or VCC 8 pF CPD Power Dissipation Capacitance VCC = 3.3V, VI = 0V or VCC, f = 10 MHz 25 pF 3 www.fairchildsemi.com 74LCX38 AC Electrical Characteristics 74LCX38 AC Loading and Waveforms Generic for LCX Family FIGURE 1. AC Test Circuit (CL includes probe and jig capacitance) Test Switch tPZL, tPLZ 6V at VCC = 3.3 ± 0.3V VCC x 2 at VCC = 2.5 ± 0.2V trise and tfall 3-STATE Output Low Enable and Disable Times for Logic FIGURE 2. Waveforms (Input Pulse Characteristics; f = 1MHz, tr = tf = 3ns) Symbol www.fairchildsemi.com VCC 3.3V ± 0.3V 2.7V 2.5V ± 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 4 74LCX38 Physical Dimensions inches (millimeters) unless otherwise noted 14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow Package Number M14A 5 www.fairchildsemi.com 74LCX38 Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 14-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide Package Number M14D www.fairchildsemi.com 6 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 7 www.fairchildsemi.com 74LCX38 Low Voltage Quad 2-Input NAND Gate (Open Drain) with 5V Tolerant Inputs Physical Dimensions inches (millimeters) unless otherwise noted (Continued)