HD74LV2GT123A Datasheet, PDF (1/14 Pages) Renesas Technology Corp – Retriggerable Monostable Multivibrator / CMOS Logic Level Shifter

HD74LV2GT123A
Retriggerable Monostable Multivibrator /
CMOS Logic Level Shifter
Description
REJ03D0004-0300Z
Rev.3.00
Oct.22.2003
The HD74LV2GT123A 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. The input protection circuitry on this device
allows over voltage tolerance on the input, allowing the device to be used as a logic–level translator from
3.0 V CMOS Logic to 5.0 V CMOS Logic or from 1.8 V CMOS logic to 3.0 V CMOS Logic while
operating at the high-voltage power supply. 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.
• Control input is TTL compatible input level.
Supply voltage range : 3.0 to 5.5 V
Operating temperature range : –40 to +85°C
• Logic-level translate function
3.0 V CMOS logic → 5.0 V CMOS logic (@V_CC = 5.0 V)
1.8 V or 2.5 V CMOS logic → 3.3 V CMOS logic (@V_CC = 3.3 V)
• 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 inputs have hysteresis voltage for the slow transition.
• Ordering Information
Part Name
Package Type
Package Code Package
Taping
Abbreviation Abbreviation (Quantity)
HD74LV2GT123AUSE SSOP-8 pin
TTP-8DBV
US
E (3,000 pcs / Reel)
Rev.3.00, Oct.22.2003, page 1 of 1