74AC14MTR ,HEX SCHMITT INVERTER74AC14HEX SCHMITT INVERTER ■ HIGH SPEED: t = 4.5ns (TYP.) at V = 5VPD CC■ LOW POWER DISSIPATION:I ..
74AC14PC ,Hex Inverter Schmitt Trigger InputFeaturesThe 74AC14 and 74ACT14 contain six inverter gates each
74AC14M-74AC14MTR-74AC14TTR
HEX SCHMITT INVERTER
1/8July 2001 HIGH SPEED: tPD = 4.5ns (TYP.) at VCC = 5V LOW POWER DISSIPATION:CC = 4μA(MAX.) at TA =25°C 50Ω TRASMISSION LINE DRIVING
CAPABILITY SYMMETRICAL OUTPUT IMPEDANCE:
|IOH| = IOL = 24mA (MIN) BALANCED PROPAGATION DELAYS:PLH ≅ tPHL OPERATING VOLTAGE RANGE:CC (OPR) = 2V to 6V PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 14 IMPROVED LATCH-UP IMMUNITY
DESCRIPTIONThe 74AC14 is an advanced high-speed CMOS
HEX SCHMITT TRIGGER INVERTER fabricated
with sub-micron silicon gate and double-layer
metal wiring C2 MOS technology.
The internal circuit is composed of 3 stages
including buffer output, which enables high noise
immunity and stable output.
This together with its schmitt trigger function
allows it to be used on line receivers with slow
rise/fall input signals.
All inputs and outputs are equipped with
protection circuits against static discharge, giving
them 2KV ESD immunity and transient excess
voltage.
74AC14HEX SCHMITT INVERTER
PIN CONNECTION AND IEC LOGIC SYMBOLS
ORDER CODES
74AC142/8
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.
RECOMMENDED OPERATING CONDITIONS
74AC143/8
DC SPECIFICATIONS 1) Maximum test duration 2ms, one output loaded at time
2) Incident wave switching is guaranteed on transmission lines with impedances as low as 50Ω
AC ELECTRICAL CHARACTERISTICS (CL = 50 pF, RL = 500 Ω, Input tr = tf = 3ns)
(*) Voltage range is 3.3V ± 0.3V
(**) Voltage range is 5.0V ± 0.5V
74AC144/8
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)
RL = R1 = 500Ω or equivalent
RT = ZOUT of pulse generator (typically 50Ω)
WAVEFORM: PROPAGATION DELAYS (f=1MHz; 50% duty cycle)
