HD74LV2G123A
Retriggerable Monostable Multivibrator
REJ03D0098–0300Z
(Previous ADE-205-352B (Z))
Rev.3.00
Sep.30.2003
Description
The HD74LV2G123A features output pulse duration control by three methods. In the first method, the
A
input is low and the B input goes high. In the second method, the B input is high and the
A
input goes low.
In the third method, the
A
input is low, the B input is high, and the clear (CLR) input goes high. The basic
pulse duration is programmed by selecting external resistance and capacitance values. The external timing
capacitor must be connected between Cext and Rext/Cext (positive) and an external resistor connected
between Rext/Cext and V
CC
. To obtain variable pulse durations, connect an external variable resistance
between Rext/Cext and V
CC
. Once triggered, the basic pulse duration can be extended by retriggering the
gated low-level active (A) or high-level active (B) input. Pulse duration can be reduced by taking
CLR
low. The output pulse equation is simply : t
WQ
= Cext
•
Rext.
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 Renesas uni logic series.
•
Supplied on emboss taping for high-speed automatic mounting.
•
Electrical characteristics equivalent to the HD74LV123A
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.
•
Ordering Information
Part Name
Package Type
Package Code
TTP-8DBV
Package
Abbreviation
US
Taping Abbreviation
(Quantity)
E (3,000 pcs/reel)
HD74LV2G123AUSE SSOP-8 pin
Rev.3.00, Sep.30.2003, page 1 of 18
HD74LV2G123A
Pin Arrangement
A
1
8
V
CC
B
2
7
Rext / Cext
CLR
3
6
Cext
GND
4
5
Q
(Top view)
Absolute Maximum Ratings
Item
Supply voltage range
Input voltage range
*1
Output voltage range
*1, 2
Input clamp current
Output clamp current
Continuous output current
Continuous current through
V
CC
or GND
Maximum power dissipation
*3
at Ta = 25°C (in still air)
Storage temperature
Notes:
Symbol
V
CC
V
I
V
O
I
IK
I
OK
I
O
I
CC
or I
GND
P
T
Tstg
Ratings
–0.5 to 7.0
–0.5 to 7.0
–0.5 to V
CC
+ 0.5
–0.5 to 7.0
–20
±50
±25
±50
200
–65 to 150
mA
mA
mA
mA
mW
°C
Unit
V
V
V
Output : H or L
V
CC
: OFF
V
I
< 0
V
O
< 0 or V
O
> V
CC
V
O
= 0 to V
CC
Test Conditions
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.
Rev.3.00, Sep.30.2003, page 3 of 18
HD74LV2G123A
Recommended Operating Conditions
Item
Supply voltage range
Input voltage range
Output voltage range
Output current
Symbol
V
CC
V
I
V
O
I
OH
Min
1.65
0
0
—
—
—
—
I
OL
—
—
—
—
Input transition rise or fall rate
∆t
/
∆v
0
0
0
0
External timing resistance
External capacitance
Supply transition rise rate
Rext
Cext
∆t
/
∆V
CC
5
1
—
1
–40
Typ
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Max
5.5
5.5
V
CC
–1
–2
–6
–12
1
2
6
12
300
200
100
20
—
—
F
ms / V
°C
—
85
kΩ
ns / V
Unit
V
V
V
mA
V
CC
= 1.65 to 1.95 V
Conditions
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
V
CC
= 1.65 to 1.95 V
V
CC
≥
2.3 V
Unlimited
—
Operating free-air temperature T
a
Note: Unused or floating inputs must be held high or low.
Rev.3.00, Sep.30.2003, page 4 of 18
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