Datasheet

UNISONIC TECHNOLOGIES CO., LTD
U74AHCT14
CMOS IC
HEX SCHMITT-TRIGGER
INVERTER
„
DESCRIPTION
The U74AHCT14 is a high speed Si-gate CMOS device which
contains six independent Schmitt-trigger inverters and they perform
the function Y=A.
The device have different input threshold levels for positive-going
(VT+) and negative-going(VT-) signals because of the Schmitt-trigger
action in the input.
„
FEATURES
* All inputs have Schmitt-trigger action
* Inputs are TTL-Voltage compatible
* Balanced propagation delays
„
ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
U74AHCT14L-S14-R
U74AHCT14G-S14-R
U74AHCT14L-P14-R
U74AHCT14G-P14-R
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Copyright © 2012 Unisonic Technologies Co., Ltd
Package
Packing
SOP-14
TSSOP-14
Tape Reel
Tape Reel
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U74AHCT14
CMOS IC
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PIN CONFIGURATION
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FUNCTION TABLE (each gate)
INPUT
A
L
H
„
OUTPUT
Y
H
L
LOGIC DIAGRAM (positive logic)
IEC logic symbol
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U74AHCT14
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CMOS IC
ABSOLUTE MAXIMUM RATING (TA=25°C, unless otherwise specified)(Note 1)
PARAMETER
SYMBOL
RATINGS
UNIT
Supply Voltage
VCC
-0.5~7
V
Input Voltage
VIN
-0.5~7
V
Output Voltage(active mode)
VOUT
-0.5~VCC+0.5
V
Input Clamp Current(VIN<0)
IIK
-20
mA
Output Clamp Current(VOUT<0)
IOK
±20
mA
Output Current
IOUT
±25
mA
VCC or GND Current
ICC
±50
mA
Storage Temperature
TSTG
-65 ~ +150
°C
Note 1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.
2. Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
„
RECOMMENDED OPERATING COMDITIONS
PARAMETER
Supply Voltage
Input Voltage
Output Voltage
Operating Temperature
„
SYMBOL
CONDITIONS
VCC
Operating
VIN
VOUT
TA
SYMBOL
VT+
VT-
Hysteresis Voltage (VT+-VT-)
△VT
High-Level Output Voltage
VOH
Low-Level Output Voltage
VOL
Input Leakage Current
Quiescent Supply Current
Additional Quiescent Supply
Current
Input Capacitance
II(LEAK)
ICC
ΔICC
CIN
TEST CONDITIONS
VCC =4.5V
VCC =5.5V
VCC =4.5V
VCC =5.5V
VCC =4.5V
VCC =5.5V
VCC =4.5V, IOH=-50μA
VCC =4.5V, IOH=-8mA
VCC =4.5V, IOL=50μA
VCC =4.5V, IOL=8mA
VCC =0V ~ 5.5V, VIN=VCC or GND
VCC = 5.5V, VIN=5.5V or GND, IOUT=0
VCC = 5.5V, One input at 3.4V, other
inputs at VCC or GND
VCC =3.3V, VIN=VCC or GND
MAX
5.5
5.5
VCC
+85
UNIT
V
V
V
°C
MIN
0.9
1
0.5
0.6
0.4
0.4
4.4
3.94
TYP
MAX
1.9
2.1
1.5
1.7
1.4
1.5
UNIT
V
V
V
V
0.1
0.36
±0.1
2
μA
μA
1.35
mA
2
10
pF
TYP
4
5.5
MAX
7
8
UNIT
TYP
12
MAX
UNIT
pF
0.1
V
DYNAMIC CHARACTERISTICS (Input: tR, tF≤3ns; PRR≤1MHz)
See Fig. 1 and Fig. 2 for test circuit and waveforms.
PARAMETER
SYMBOL
TEST CONDITIONS
VCC=5V±0.5V, CL =15pF
Propagation delay from input
tPLH/tPHL
(A or B) to output(Y)
VCC=5V±0.5V, CL =50pF
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TYP
STATIC CHARACTERISTICS (TA=25°C, unless otherwise specified)
PARAMETER
Positive-Going Input Threshold
Voltage
Negative-Going Input Threshold
Voltage
„
MIN
4.5
0
0
-40
MIN
ns
OPERATING CHARACTERISTICS
PARAMETER
Power Dissipation Capacitance
SYMBOL
TEST CONDITIONS
Cpd
No load, f=1MHz, VCC=5V
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MIN
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U74AHCT14
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CMOS IC
TEST CIRCUIT AND WAVEFORMS
Fig. 1 Load circuitry for switching times.
Note: CL includes probe and jig capacitance.
Fig. 2 Propagation delay from input(A) to output(Y) and Output transition time.
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
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