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M74HC14B1
HEX SCHMITT INVERTER
1/8July 2001 HIGH SPEED:
tPD =12ns (TYP.) at VCC = 6V LOW POWER DISSIPATION:CC = 1μA(MAX.) at TA =25°C HIGH NOISE IMMUNITY:H = 1.2 V (TYP.) AT V CC = 6 V SYMMETRICAL OUTPUT IMPEDANCE:
|IOH| = IOL = 4mA (MIN) BALANCED PROPAGATION DELAYS:
tPLH ≅ tPHL WIDE OPERATING VOLTAGE RANGE:CC (OPR) = 2V to 6V PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 14
DESCRIPTIONThe M74HC14 is an high speed CMOS HEX
SCHMITT INVERTER fabricated with silicon gate2 MOS technology. Pin configuration and
function are the same as those of the M74HC04
but all inputs have 20% Vcc hysteresis level.
This, together with its schmitt trigger function,
allows it to be used on line receivers with slow
rise/fall input signals.
All inputs are equipped with protection circuits
against static discharge and transient excess
voltage.
M74HC14HEX SCHMITT INVERTER
PIN CONNECTION AND IEC LOGIC SYMBOLS
ORDER CODES
M74HC142/8
INPUT AND OUTPUT EQUIVALENT CIRCUIT PIN DESCRIPTION
TRUTH TABLE
ABSOLUTE MAXIMUM RATINGS Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is
not implied
(*) 500mW at 65 °C; derate to 300mW by 10mW/°C from 65°C to 85°C
RECOMMENDED OPERATING CONDITIONS
M74HC143/8
DC SPECIFICATIONS
AC ELECTRICAL CHARACTERISTICS (CL = 50 pF, Input tr = tf = 6ns)
M74HC144/8
CAPACITIVE CHARACTERISTICS 1) CPD is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without
load. (Refer to Test Circuit). Average operating current can be obtained by the following equation. ICC(opr) = CPD x VCC x fIN + ICC/6(per gate)
TEST CIRCUIT CL = 50pF or equivalent (includes jig and probe capacitance)
RT = ZOUT of pulse generator (typically 50Ω)
WAVEFORM : PROPAGATION DELAY TIMES (f=1MHz; 50% duty cycle)
