Revised March 1999 74VHCT14A Hex Schmitt Inverter General Description Features The VHCT14A is an advanced high speed CMOS Hex Schmitt Inverter fabricated with silicon gate CMOS technology. The VHCT14A contains six independent inverters which are capable of transforming slowly changing input signals into sharply defined, jitter-free output signals. Protection circuits ensure that 0V to 7V can be applied to the input pins without regard to the supply voltage and to the output pins with VCC = 0V. These circuits prevent device destruction due to mismatched supply and input/ output voltages. This device can be used to interface 3V to 5V systems and two supply systems such as battery backup. ■ High speed: tPD = 5.0 ns (typ) at TA = 25°C ■ High noise immunity: VIH = 2.0V, VIL = 0.8V ■ Power down protection is provided on all inputs and outputs ■ Low noise: VOLP = 1.0V (max) ■ Low power dissipation: ICC = 2 µA (max) @ TA = 25°C ■ Pin and function compatible with 74HCT14 Ordering Code: Order Number Package Number 74VHCT14AM 74VHCT14ASJ 74VHCT14AMTC 74VHCT14AN Package Description M14A 14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150” Narrow M14D 14-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide MTC14 14-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide N14A 14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide Surface mount packages are also available on Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Logic Symbol Connection Diagram Pin Descriptions Truth Table A O An Pin Names Inputs Description L H On Outputs H L © 1999 Fairchild Semiconductor Corporation DS500147.prf www.fairchildsemi.com 74VHCT14A Hex Schmitt Inverter December 1998 74VHCT14A Absolute Maximum Ratings(Note 1) Supply Voltage (VCC) −0.5V to +7.0V DC Input Voltage (VIN ) −0.5V to +7.0V Recommended Operating Conditions (Note 5) 4.5V to +5.5V Supply Voltage (VCC) DC Output Voltage (VOUT) 0V to +5.5V Input Voltage (VIN) (Note 2) −0.5V to VCC + 0.5V (Note 3) Output Voltage (VOUT) −0.5V to 7.0V (Note 2) 0V to VCC Input Diode Current (IIK) −20 mA (Note 3) 0V to 5.5V Output Diode Current (IOK) (Note 4) ±20 mA DC Output Current (IOUT) ±25 mA DC VCC/GND Current (ICC) ±50 mA −65°C to +150°C Storage Temperature (TSTG) Lead Temperature (TL) (Soldering, 10 seconds) −40°C to +85°C Operating Temperature (TOPR) Note 1: Absolute Maximum Ratings are values beyond which the device may be damaged or have its useful life impaired. The databook specifications should be met, without exception, to ensure that the system design is reliable over its power supply, temperature, and output/input loading variables. Fairchild does not recommend operation outside databook specifications. Note 2: HIGH or LOW state. IOUT absolute maximum rating must be observed. 260°C Note 3: VCC = 0V. Note 4: VOUT < GND, VOUT > VCC (Outputs Active) Note 5: Unused inputs must be held HIGH or LOW. They may not float. DC Electrical Characteristics Symbol VP VCC (V) Parameter Positive Threshold Voltage TA = 25°C Min 1.9 1.9 2.1 5.5 0.6 VH Hysteresis Voltage 4.5 0.4 VOH HIGH Level Output Voltage 5.5 4.5 Input Leakage Current ICC Quiescent Supply Current ICCT Maximum ICC/Input IOFF Output Leakage Current 0.5 V 0.6 0.4 4.40 1.5 4.50 3.94 0.4 1.4 0.4 1.5 V 4.40 V 3.80 V VIN = VIL IOH = −50 µA IOH = −8 mA VIN = VIH IOL = 50 µA 0.1 0.1 V 0.36 0.44 V 0 − 5.5 ±0.1 ±1.0 µA VIN = 5.5V or GND 5.5 2.0 20.0 µA VIN = VCC or GND 5.5 1.35 1.50 mA 0.0 0.5 5.0 µA 4.5 0.0 Conditions V 0.5 1.4 Units Max 2.1 4.5 IIN Min 4.5 Negative Threshold Voltage LOW Level Output Voltage TA = −40°C to +85°C Max 5.5 VN VOL Typ IOL = 8 mA VIN = 3.4V Other Inputs = VCC or GND VOUT = 5.5V (Power Down State) Noise Characteristics Symbol Parameter TA = 25°C VCC (V) Typ Limits Units Conditions VOLP (Note 6) Quiet Output Maximum Dynamic VOL 5.0 0.8 1.0 V CL = 50 pF VOLV (Note 6) Quiet Output Minimum Dynamic VOL 5.0 −0.8 1.0 V CL = 50 pF VIHD (Note 6) Minimum HIGH Level Dynamic Input Voltage 5.0 2.0 V CL = 50 pF VILD (Note 6) Maximum LOW Level Dynamic Input Voltage 5.0 0.8 V CL = 50 pF Note 6: Parameter guaranteed by design. www.fairchildsemi.com 2 Symbol tPHL Parameter Propagation Delay tPLH TA = 25°C VCC (V) 5.0 ± 0.5 Min TA = −40°C to +85°C Units Conditions Typ Max Min Max 5.0 7.6 1.0 9.0 ns 6.5 9.6 1.0 11.0 ns CL = 50 pF 10 10 pF VCC = OPEN pF (Note 7) CIN Input Capacitance 2 CPD Power Dissipation Capacitance 11 CL = 15 pF Note 7: 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.) = CPD * VCC * fIN + ICC/6 (per gate). 3 www.fairchildsemi.com 74VHCT14A AC Electrical Characteristics 74VHCT14A Physical Dimensions inches (millimeters) unless otherwise noted 14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 0.150” Narrow Package Number M14A 14-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide Package Number M14D www.fairchildsemi.com 4 74VHCT14A 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 5 www.fairchildsemi.com 74VHCT14A Hex Schmitt Inverter Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 14-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide Package Number N14A 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 1. Life support devices or systems are devices or systems device or system whose failure to perform can be reawhich, (a) are intended for surgical implant into the sonably expected to cause the failure of the life support body, or (b) support or sustain life, and (c) whose failure device or system, or to affect its safety or effectiveness. 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 www.fairchildsemi.com user. 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.