Datasheet

UNISONIC TECHNOLOGIES CO., LTD
U74AHCT08
CMOS IC
QUADRUPLE 2-INPUT
POSITIVE-AND GATE

DESCRIPTION
The U74AHCT08 is a quadruple 2-input AND gate which
performs the function Y=A*B or Y=A  B .

FEATURES
* Low Power Dissipation:
* High Speed:
* High Noise Immunity

ICC = 2.0 μA (Max.)
tPD = 5ns (Typ.)
ORDERING INFORMATION
Ordering Number
U74AHCT08G-S14-R

SOP-14
Package
SOP-14
Packing
Tape Reel
MARKING
www.unisonic.com.tw
Copyright © 2015 Unisonic Technologies Co., Ltd
1 of 4
QW-R502-415.B
U74AHCT08


CMOS IC
PIN CONFIGURATION
1
14 VCC
1B
2
13 4B
1Y
3
12 4A
2A
4
11 4Y
2B
5
10 3B
2Y
6
9
3A
GND 7
8
3Y
FUNCTION TABLE (Each Gate)
INPUTS
A
L
L
H
H

1A
B
L
H
L
H
OUTPUT
Y
L
L
L
H
LOGIC DIAGRAM (Positive Logic)
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
2 of 4
QW-R502-415.B
U74AHCT08

CMOS IC
ABSOLUTE MAXIMUM RATING (unless otherwise specified)(Note 2)
PARAMETER
SYMBOL
RATINGS
UNIT
Supply Voltage
VCC
-0.5~7
V
Input Voltage
VIN
-0.5~7
V
Output Voltage
VOUT
-0.5~VCC+0.5
V
Input Clamp Current
IIK
-20
mA
Output Clamp Current
IOK
±20
mA
Output Current
IOUT
±25
mA
VCC or GND Current
ICC
±50
mA
Storage Temperature
TSTG
-65 ~ +150
°C
Note: 1. 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.
2. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.

RECOMMENDED OPERATING CONDITIONS
PARAMETER
Supply Voltage
Input Voltage
Output Voltage
Input Transition Rise or Fall Rate
Ambient Operating Temperature

SYMBOL
VCC
VIN
VOUT
tR / t F
TOPR
SYMBOL
VIH
VIL
High-Level Output Voltage
VOH
Low-Level Output Voltage
VOL
Input Leakage Current
Quiescent Supply Current
II(LEAK)
IQ
Additional quiescent Supply Current
IQ
Input Capacitance
CIN
TYP
MAX
5.5
5.5
VCC
20
85
UNIT
V
V
V
ns/V
°C
MIN
2.0
TYP
MAX
UNIT
V
V
4.4
3.94
4.5
VCC=5.0+0.5V
-40
TEST CONDITIONS
VCC = 4.5~5.5 V
VCC = 4.5~5.5 V
VCC = 4.5V, IOH = -50 μA
VCC = 4.5V, IOH = -8 mA
VCC = 4.5V, IOL = 50μA
VCC = 4.5V, IOL = 8 mA
VCC = 5.5V, VIN = VCC or GND
VCC = 5.5V, VIN = VCC or GND,
IOUT = 0
VCC = 5.5V, VIN = 3.4V; other
input at VCC or GND; IOUT=0
VCC = 5V, VIN = VCC or GND
0.8
V
0.1
0.36
±0.1
μA
2
μA
1.35
mA
4
10
pF
TYP
5
5
5.5
5.5
MAX
6.9
6.9
7.9
7.9
UNIT
V
DYNAMIC CHARACTERISTICS (tR, tF ≤ 3 ns;)
PARAMETER
Propagation delay from input
(A and B) to output (Y)

MIN
4.5
0
0
STATIC CHARACTERISTICS (TA=25°C)
PARAMETER
High-Level Input Voltage
Low-Level Input Voltage

CONDITIONS
SYMBOL
tPLH
tPHL
tPLH
tPHL
TEST CONDITIONS
VCC =5±0.5 V, CL=15 pF
VCC =5±0.5 V, CL=50 pF
MIN
ns
OPERATING CHARACTERISTICS (VCC = 5V; TA = 25°C)
PARAMETER
Power Dissipation Capacitance
SYMBOL
CPD
TEST CONDITIONS
No load, f=1MHz
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
TYP
18
UNIT
pF
3 of 4
QW-R502-415.B
U74AHCT08

CMOS IC
TEST CIRCUIT AND WAVEFORMS
Note : CL includes probe and jig capacitance.
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.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
4 of 4
QW-R502-415.B