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74VHC14 Hex Schmitt Inverter
June 1993 Revised April 1999
74VHC14 Hex Schmitt Inverter
General Description
The VHC14 is an advanced high speed CMOS Hex Schmitt Inverter fabricated with silicon gate CMOS technology. It achieves the high speed operation similar to equivalent Bipolar Schottky TTL while maintaining the CMOS low power dissipation. Pin configuration and function are the same as the VHC04 but the inputs have hysteresis between the positive-going and negative-going input thresholds, which are capable of transforming slowly changing input signals into sharply defined, jitter-free output signals, thus providing greater noise margin than conventional inverters. An input protection circuit ensures that 0V to 7V can be applied to the input pins without regard to the supply voltage. This device can be used to interface 5V to 3V systems and two supply systems such as battery back up. This circuit prevents device destruction due to mismatched supply and input voltages.
Features
s High Speed: tPD = 5.5 ns (typ) at VCC = 5V s Low power dissipation: ICC = 2 A (Max) at TA = 25C s High noise immunity: VNIH = VNIL = 28% VCC (Min) s Power down protection is provided on all inputs s Low noise: VOLP = 0.8V (Max) s Pin and function compatible with 74HC14
Ordering Code:
Order Number 74VHC14M 74VHC14SJ 74VHC14MTC 74VHC14N Package Number M14A M14D MTC14 N14A Package Description 14-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-120, 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 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
IEEE/IEC
Connection Diagram
Pin Descriptions
Pin Names An On Description Inputs Outputs
Truth Table
A L H O H L
(c) 1999 Fairchild Semiconductor Corporation
DS011617.prf
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74VHC14
Absolute Maximum Ratings(Note 1)
Supply Voltage (VCC) DC Input Voltage (VIN) DC Output Voltage (VOUT) Input Diode Current (IIK) Output Diode Current (IOK) DC Output Current (IOUT ) DC VCC/GND Current (ICC) Storage Temperature (TSTG) Lead Temperature (TL) Soldering (10 seconds) 260C -0.5V to +7.0V -0.5V to +7.0V -0.5V to VCC + 0.5V -20 mA 20 mA 25 mA 50 mA -65C to +150C
Recommended Operating Conditions (Note 2)
Supply Voltage (VCC) Input Voltage (VIN) Output Voltage (VOUT) Operating Temperature (TOPR) +2.0V to +5.5V 0V to +5.5V 0V to VCC -40C to +85C
Note 1: Absolute maximum ratings are values beyond which the device may be damaged or have its useful life impaired. The data book 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: Unused inputs must be held HIGH or LOW. They may not float.
DC Electrical Characteristics
Symbol VP Parameter Positive Threshold Voltage VCC 3.0 4.5 5.5 VN Negative Threshold Voltage 3.0 4.5 5.5 VH Hysteresis Voltage 3.0 4.5 5.5 VOH HIGH Level Output Voltage 2.0 3.0 4.5 3.0 4.5 VOL LOW Level Output Voltage 2.0 3.0 4.5 3.0 4.5 IIN ICC Input Leakage Current Quiescent Supply Current 0-5.5 5.5 0.90 1.35 1.65 0.30 0.40 0.50 1.9 2.9 4.4 2.58 3.94 0.0 0.0 0.0 0.1 0.1 0.1 0.36 0.36 0.1 2.0 2.0 3.0 4.5 1.20 1.40 1.60 TA = 25C Min Typ Max 2.20 3.15 3.85 0.90 1.35 1.65 0.30 0.40 0.50 1.9 2.9 4.4 2.48 3.80 0.1 0.1 0.1 0.44 0.44 1.0 20.0 V A A IOL = 4 mA IOL = 8 mA VIN = 5.5V or GND VIN = VCC or GND V V VIN = VIH IOL = 50 A IOH = -4 mA IOH = -8 mA V 1.20 1.40 1.60 VIN =VIL IOH = -50 A V V TA = -40C to +85C Min Max 2.20 3.15 3.85 V Units Conditions
Noise Characteristics
Symbol VOLP (Note 3) VOLV (Note 3) VIHD (Note 3) VILD (Note 3) Parameter Quiet Output Maximum Dynamic VOL Quiet Output Minimum Dynamic VOL Minimum HIGH Level Dynamic Input Voltage Maximum LOW Level Dynamic Input Voltage VCC 5.0 5.0 5.0 5.0 TA = 25C Typ 0.4 -0.4 Limits 0.8 -0.8 3.5 1.5 V V V V CL = 50 pF CL = 50 pF CL = 50 pF CL = 50 pF Units Conditions
Note 3: Parameter guaranteed by design.
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74VHC14
AC Electrical Characteristics
Symbol tPLH tPHL Parameter Propagation Delay Time 5.0 0.5 CIN CPD Input Capacitance Power Dissipation Capacitance VCC 3.3 0.3 TA = 25C Min Typ 8.3 10.8 5.5 7.0 4 21 Max 12.8 16.3 8.6 10.6 10 TA = -40C to +85C Min 1.0 1.0 1.0 1.0 Max 15.0 18.5 10.0 12.0 10 Units ns ns pF pF Conditions CL = 15 pF CL = 50 pF CL = 15 pF CL = 50 pF VCC = Open (Note 4)
Note 4: 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)
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74VHC14
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
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74VHC14
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
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74VHC14 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.

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