74LVC14AD ,Hex inverting Schmitt trigger with 5 V tolerant inputPIN CONFIGURATION PIN DESCRIPTIONPIN NUMBER SYMBOL NAME AND FUNCTION1A 1 14 VCC1, 3, 5, 9, 11, 13 1 ..
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74LVC14AD -74LVC14ADB-LVC14A
Hex inverting Schmitt-trigger with 5V tolerant input
Product specification 1998 Apr 28
Philips Semiconductors Product specification
74LVC14AHex inverting Schmitt-trigger with 5V
tolerant input
FEATURES Wide supply voltage range of: 1.2 V to 3.6 V In accordance with JEDEC standard no. 8-1A Inputs accept voltages up to 5.5 V CMOS low power consumption Direct interface with TTL levels
APPLICATIONS Wave and pulse shapers for highly noisy environments Astable multivibrators Monostable multivibrators
DESCRIPTIONThe 74LVC14A is a high-performance, low power, low-voltage
Si-gate CMOS device and superior to most advanced CMOS
compatible TTL families.
Inputs can be driven from either 3.3 V or 5 V devices. This feature
allows the use of these devices as translators in a mixed 3.3 V/5 V
environment.
The 74LVC14A provides six inverting buffers with Schmitt-trigger
action. It is capable of transforming slowly changing input signals
into sharply defined, jitter-free output signals.
QUICK REFERENCE DATAGND = 0 V; Tamb = 25°C; tr ≤ tf ≤ 2.5 ns
NOTES: CPD is used to determine the dynamic power dissipation (PD in μW)
PD = CPD × VCC 2 × fi (CL × VCC 2 × fo) where:
fi = input frequency in MHz; CL = output load capacity in pF;
fo = output frequency in MHz; VCC = supply voltage in V;
(CL × VCC 2 × fo) = sum of the outputs. The condition is VI = GND to VCC.
ORDERING INFORMATION
PIN CONFIGURATION
PIN DESCRIPTION
Philips Semiconductors Product specification
74LVC14AHex inverting Schmitt-trigger with 5V
tolerant input
LOGIC SYMBOL (IEEE/IEC)
LOGIC DIAGRAM (ONE SCHMITT-TRIGGER)
FUNCTION TABLE
NOTES:H = HIGH voltage level
L = LOW voltage level
LOGIC SYMBOL
RECOMMENDED OPERATING CONDITIONS
Philips Semiconductors Product specification
74LVC14AHex inverting Schmitt-trigger with 5V
tolerant input
ABSOLUTE MAXIMUM RATINGS1In accordance with the Absolute Maximum Rating System (IEC 134).
Voltages are referenced to GND (ground = 0V).
NOTES: Stresses beyond those listed may cause permanent damage to the device. These are stress ratings only and functional operation of the
device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to
absolute-maximum-rated conditions for extended periods may affect device reliability. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
DC ELECTRICAL CHARACTERISTICSOver recommended operating conditions. Voltages are referenced to GND (ground = 0V).
NOTE: All typical values are at VCC = 3.3V and Tamb = 25°C.
Philips Semiconductors Product specification
74LVC14AHex inverting Schmitt-trigger with 5V
tolerant input
TRANSFER CHARACTERISTICSVoltages are referenced to GND (ground = 0 V).
NOTES: All typical values are measured at Tamb = 25°C The VIH and VIL from the DC family characteristics are superseded by the VT+ and VT-.
TRANSFER CHARACTERISTIC WAVEFORMS
Figure 1. Transfer characteristic.
Figure 2. Definition of V T�, VT- and VH;
where VT+ and VT- are between limits of 20% and 70%
Philips Semiconductors Product specification
74LVC14AHex inverting Schmitt-trigger with 5V
tolerant input
AC CHARACTERISTICSGND = 0 V; tr = tf � 2.5 ns; CL = 50 pF; RL = 500; Tamb = –40C to +85C
NOTE: These typical values are at VCC = 3.3V and Tamb = 25°C.
AC WAVEFORMSVM = 1.5 V at VCC � 2.7 V
VM = 0.5 VCC at VCC < 2.7 V
VOL and VOH are the typical output voltage drop that occur with the
output load.
Figure 1. Input (nA) to output (nY) propagation delays.
TEST CIRCUIT
Figure 2. Load circuitry for switching times.
APPLICATION INFORMATIONAll values given are typical unless otherwise specified.
Note to Figure 7: f�1� 1
0.8� RC
Figure 3. Average ICC for LVC Schmitt-trigger devices;
linear change of Vi between 0.8 V to 2.0 V.
Figure 4. Relaxation oscillator using the LVC14.
