Datasheet

UNISONIC TECHNOLOGIES CO., LTD
U74AHC1G74
CMOS IC
SINGLE
POSITIVE-EDGE-TRIGGERED
D-TYPE FLIP-FLOP WITH
CLEAR AND PRESET

DESCRIPTION
SOP-8
The UTC U74AHC1G74 is a single positive-edge-triggered
D-type flip-flop.
A low level at the preset ( PRE ) or clear ( CLR ) inputs sets
or resets the outputs, regardless of the levels of the other
inputs. When PRE and CLR are inactive (high), data at the
data (D) input meeting the setup time requirements is
transferred to the outputs on the positive-going edge of the
clock pulse. Clock triggering occurs at a voltage level and is not
directly related to the rise time of the clock pulse. Following the
hold-time interval,data at the D input can be changed without
affecting the levels at the outputs.

FEATURES
* Operation voltage range: 2 ~ 5.5V
* Max tPd of 7.3 ns at 5 V
* Low static power consumption; ICC=2μA (Max.)
* ±8mA output drive at 5 V

ORDERING INFORMATION
Ordering Number
U74AHC1G74G-S08-R

Package
SOP-8
Packing
Tape Reel
MARKING
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Copyright © 2015 Unisonic Technologies Co., Ltd
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CMOS IC
PIN CONFIGURATION

CLK
1
8
VCC
D
2
7
PRE
Q
3
6
CLR
4
5
Q
GND
FUNCTION TABLE (each gate)

INPUTS
OUTPUTS
PRE
L
H
L
H
H
CLR
CLK
D
Q
Q
H
L
L
H
H
X
X
X
↑
↑
X
X
X
H
L
H
L
H (Note)
H
L
L
H
H (Note)
L
H
H
H
L
X
Q0
Q0
Note: This configuration is nonstable; that is, it does not persist when PRE or CLR returns to its inactive (high)
level.
LOGIC DIAGRAM (positive logic)

7
PRE
CLK
2
C
C
C
5
Q
TG
C
2
D
C
C
C
TG
TG
TG
3
Q
C
CLR
C
6
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C
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
CMOS IC
ABSOLUTE MAXIMUM RATING
PARAMETER
Supply Voltage
Input Voltage
Output Voltage
Continuous VCC or GND
Current
Continuous Output Current
Input Clamp Current
Output Clamp Current
SYMBOL
VCC
VIN
VOUT
CONDITIONS
RATINGS
-0.5 ~ +7.0
-0.5 ~ +7.0
-0.5 ~ VCC +0.5
UNIT
V
V
V
±50
mA
±25
-20
mA
mA
±20
mA
ICC
IOUT
IIK
IOK
-0.5V<VOUT<VCC+0.5V
VIN< -0.5
VOUT< -0.5 or VOUT>VCC+0.5V
(Note 2)
Storage Temperature Range
TSTG
-65 ~ + 150
°C
Notes: 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
Operating Temperature
Input Transition Rise or Fall
Rate

SYMBOL
VCC
VIN
VOUT
TA
∆t/∆v
TEST CONDITIONS
Operating
High or low state
MIN
2.0
0
0
-40
TYP
5.0
VCC=3.3 ± 0.3V
VCC=5.0 ± 0.5V
MAX
5.5
5.5
VCC
+85
100
20
UNIT
V
V
V
°C
ns/V
ns/V
MAX
UNIT
V
V
V
V
V
V
V
V
V
ELECTRICAL CHARACTERISTICS (TA =25°C , unless otherwise specified)
PARAMETER
SYMBOL
High-level Input Voltage
VIH
Low-level Input Voltage
VIL
High-level output voltage
(all outputs)
VOH
High-Level Output Voltage
Low-level output voltage
(all outputs)
VOL
Low-Level Output Voltage
Input Leakage Current
II(LEAK)
Quiescent Supply Current
ICC
Input Capacitance
CIN
TEST CONDITIONS
VCC=2.0V
VCC=3.0V
VCC=5.5V
VCC=2.0V
VCC=3.0V
VCC=5.5V
VCC=2.0V
VIN=VIH or VIL,
VCC=3.0V
IOH=-50μA
VCC=5.5V
VCC=3.0V, VIN=VIH or VIL,
IOH=-4.0mA
VCC=4.5V, VIN=VIH or VIL,
IOH=-8.0mA
VCC=2.0V
VIN=VIH or VIL,
VCC=3.0V
IOH=50μA
VCC=5.5V
VCC=3.0V, VIN=VIH or VIL,
IOH=4.0mA
VCC=4.5V, VIN=VIH or VIL,
IOH=8.0mA
VCC=5.5V, VIN=VCC or GND
VCC=5.5V, VIN=VCC or GND,
IOUT=0
VIN=VCC or GND
UNISONIC TECHNOLOGIES CO., LTD
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MIN
1.5
2.1
3.85
TYP
0.5
0.9
1.65
1.9
2.9
4.4
2.0
3.0
4.5
2.58
V
3.94
V
2
0.1
0.1
0.1
V
V
V
0.36
V
0.36
V
±0.1
μA
2
μA
10
pF
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
CMOS IC
SWITCHING CHARACTERISTICS (GND=0V, tr = tf ≤ 3.0ns, TA =25°C , unless otherwise specified)
PARAMETER
Minimum Frequency
Response
SYMBOL
fMax
Propagation delay from input
( PRE or CLR ) to output
tPLH / tPHL
(Q or Q )
Propagation delay from input
(CLK) to output(Q or Q )

tPLH / tPHL
MIN
80
130
50
90
TEST CONDITIONS
VCC=3.0V ~ 3.6V
VCC=4.5V ~ 5.5V
MIN
6
5
TYP
125
170
75
115
7.6
4.8
10.1
6.3
6.7
4.6
9.2
6.1
MAX
TYP
MAX
12.3
7.7
15.8
9.7
11.9
7.3
15.4
9.3
UNIT
MHz
MHz
MHz
MHz
ns
ns
ns
ns
ns
ns
ns
ns
TIMING REQUIREMENTS
PARAMETER
SYMBOL
Pulse duration
tw
Setup time before CLK↑
from Data to PRE or CLR
inactive
tsu
Hold time, data after CLK↑
th

TEST CONDITIONS
VCC=3.0V ~ 3.6V
CL=15pF
VCC=4.5V ~5.5V
VCC=3.0V ~ 3.6V
CL=50pF
VCC=4.5V ~5.5V
VCC=3.0V ~ 3.6V
CL=15pF
VCC=4.5V ~ 5.5V
VCC=3.0V ~ 3.6V
CL=50pF
VCC=4.5V ~ 5.5V
VCC=3.0V ~ 3.6V
CL=15pF
VCC=4.5V ~ 5.5V
VCC=3.0V ~ 3.6V
CL=50pF
VCC=4.5V ~ 5.5V
UNIT
ns
ns
VCC=3.0V ~ 3.6V
6
ns
VCC=4.5V ~ 5.5V
5
ns
VCC=3.0V ~ 3.6V
VCC=4.5V ~ 5.5V
0.5
0.5
ns
ns
OPERATING CHARACTERISTICS (TA =25°C , unless otherwise specified)
PARAMETER
Power Dissipation
Capacitance
SYMBOL
CPD
TEST CONDITIONS
CL=50pF, f=1MHz
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MIN
TYP
32
MAX
UNIT
pF
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
CMOS IC
TEST CIRCUIT AND WAVEFORMS
From Output
(Note) CL
Notes: 1. CL includes probe and jig capacitance.
2. All input pulses are supplied by generators having the following characteristics: PRR ≤1MHz, ZO = 50Ω,
tr ≤3ns, tf ≤3ns.
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
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