HD74LV2G74A
Single D–type Flip Flops with Preset and Clear
ADE-205-346B (Z)
3rd. Edition
April 2001
Description
The HD74LV2G74A has independent data, preset, clear, and clock inputs Q and
Q
outputs in a 8 pin
package. The input data is transferred to the output at the rising edge of clock pulse CLK. Low voltage
and high speed operation is suitable for the battery powered products (e.g., notebook computers), and the
low power consumption extends the battery life.
Features
•
The basic gate function is lined up as hitachi uni logic series.
•
Supplied on emboss taping for high speed automatic mounting.
•
Electrical characteristics equivalent to the HD74LV74A
Supply voltage range : 1.65 to 5.5 V
Operating temperature range : –40 to +85°C
•
All inputs V
IH
(Max.) = 5.5 V (@V
CC
= 0 V to 5.5 V)
All outputs V
O
(Max.) = 5.5 V (@V
CC
= 0 V)
•
Output current
±6
mA (@V
CC
= 3.0 V to 3.6 V),
±12
mA (@V
CC
= 4.5 V to 5.5 V)
•
All the logical input has hysteresis voltage for the slow transition.
HD74LV2G74A
Outline and Article Indication
• HD74LV2G74A
Index band
Lot No.
Y M W
L 7 4
SSOP–8
Type No.
Y : Year code
(the last digit of year)
M : Month code
W : Week code
Function Table
Inputs
PRE
L
H
L
H
H
H
CLR
H
L
L
H
H
H
CLK
X
X
X
↑
↑
↓
D
X
X
X
H
L
X
Outputs
Q
H
L
H
*1
H
L
Q
0
Q
L
H
H
*1
L
H
Q
0
H : High level
L : Low level
X : Immaterial
↑
: Low to high transition
↓
: High to low transition
Q
0
: The level of Q immediately before the input conditions shown in the above table are determined.
Note : 1. Q and
Q
will remain high as long as preset and clear are low, but Q and
Q
are unpredictable, if
preset and clear go high simultaneously.
2
HD74LV2G74A
Pin Arrangement
CLK
1
8
V
CC
D
2
7
PRE
Q
3
6
CLR
GND
4
5
Q
(Top view)
3
HD74LV2G74A
Absolute Maximum Ratings
Item
Supply voltage range
Input voltage range
*1
Symbol
V
CC
V
I
V
O
Ratings
–0.5 to 7.0
–0.5 to 7.0
–0.5 to V
CC
+ 0.5
–0.5 to 7.0
Unit
V
V
V
Test Conditions
Output voltage range
*1, 2
Output : H or L
V
CC
: OFF
Input clamp current
Output clamp current
Continuous output current
Continuous current through
V
CC
or GND
Maximum power dissipation
at Ta = 25°C (in still air)
*3
Storage temperature
I
IK
I
OK
I
O
I
CC
or I
GND
P
T
Tstg
–20
±50
±25
±50
200
–65 to 150
mA
mA
mA
mA
mW
°C
V
I
< 0
V
O
< 0 or V
O
> V
CC
V
O
= 0 to V
CC
Notes:
The absolute maximum ratings are values which must not individually be exceeded, and
furthermore no two of which may be realized at the same time.
1. The input and output voltage ratings may be exceeded if the input and output clamp-current
ratings are observed.
2. This value is limited to 5.5 V maximum.
3. The maximum package power dissipation was calculated using a junction temperature of 150°C.
Recommended Operating Conditions
Item
Supply voltage range
Input voltage range
Output voltage range
Output current
Symbol
V
CC
V
I
V
O
I
OL
Min
1.65
0
0
—
—
—
—
I
OH
—
—
—
—
Input transition rise or fall rate
∆t
/
∆v
0
0
0
0
Operating free-air temperature
T
a
–40
Max
5.5
5.5
V
CC
1
2
6
12
–1
–2
–6
–12
300
200
100
20
85
°C
ns / V
Unit
V
V
V
mA
V
CC
= 1.65 to 1.95 V
V
CC
= 2.3 to 2.7 V
V
CC
= 3.0 to 3.6 V
V
CC
= 4.5 to 5.5 V
V
CC
= 1.65 to 1.95 V
V
CC
= 2.3 to 2.7 V
V
CC
= 3.0 to 3.6 V
V
CC
= 4.5 to 5.5 V
V
CC
= 1.65 to 1.95 V
V
CC
= 2.3 to 2.7 V
V
CC
= 3.0 to 3.6 V
V
CC
= 4.5 to 5.5 V
Conditions
Note: Unused or floating inputs must be held high or low.
4
HD74LV2G74A
Logic Diagram
PRE
CLK
C
C
C
Q
TG
C
C
C
C
D
TG
TG
TG
Q
C
CLR
C
C
5
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