#duplicate supply

The auspicious the Sa 's claims to put out the level of the RD74VT1G series duplicate supply to vary, single logic IC *1, by using two pieces of power, have reduced current consumption greatly; This series are new single logic IC, carry on the function that different signal levels vary in 1.2- 3.6 V, used in the mobile equipment such as digital camera and cellular telephone. Unless at 2005 January, beginning from Japan to deliver 10 stage of sample,it can offer by logic functions a series of (including with, or and inverter function) . These new IC is offered the following key feature. (1)By using two pieces of power, have reduced current consumption greatly Turn the drive power that these IC uses from single power that uses before into duplicate supply, while varying the level from undervoltage signal to high-pressure signal, current consumption can be reduced greatly. For example, as the signal input 3.3 V IC power of 1.8 V, present single power type HD74LV1GT08 (the function of the AND-gate) Current consumption 100 μ A probably,with same function to be use now RD74VT1G08s new, through putting the mains voltage of the input side as 1.8 V or lower, current consumption can nearly be lowered to 0 μ A. (2)Varying the high-speed signal level very in the wide-range in 1.2- 3.6 V Support 1.2 V to vary, make these new IC deal with the voltage of increasingly low CPU and similar signal. Variety is fast, propagation delay time (tpd) It is 3.4 ns (maximum value) ( RD74VT1G08, VccIN =2.5± 0.2 V, VccOUT =3.3± 0.3 V) . (3)WCSP subminiature capsulated Use 6 stitches of WCSP in fact the same as chip size (the chip size of chip-grade is capsulated) ,And support to have no lead wire to install. WCSP required 1.4 mm * 0.9 mm * 0.5 mm (maximum value) The single power type HD74LV1GT serial encapsulated installation area probably more present than auspicious Sa's science and technology are 70% small to install the area, make the end product more small and more exquisite. In recent years, small-scale battery-opwered apparatus such as digital camera and cellular telephone appearance are less, the speed is sharper, in order to lengthen the life-span of the battery, the development of the undervoltage electronic part is fast growing. One of these keys if the mains voltage of CPU and DSP is essential to its high speed operation, the voltage has already been reduced from 2.5 V to 1.8 V, and develop towards low-voltage trend. But to work that voltage make to reduce peripheral hardware little, ubiquitous phenomenon to have many kinds of different signal level at one same board of system. Use the level converter to vary smooth level to these different signal voltage, but besides routine 8 and compatible products of 16 total line width, also need to support the products of smaller total line width, for instance 1 or 2 width, the width is very useful in logic is corrected etc. and employed. At the same time, because has simplified and is wired, make the system more small and more exquisite, small-scale standard logic IC including 1-3 doors is as more and more extensive as the application of single logic IC of auspicious Sa's science and technology in capsulating singly; Through while the logic of final systematic design phase corrects, offer and revise the method that main LSL designs, have shortened development time. Auspicious Sa's science and technology has already varied single logic IC in the level of quantity production, can respond to the request that the low order has counted the level converter; And through increasing level and varying the function to single logic IC, meet the harsh space and limit the requirement. However, because they are the single power products, when the input voltage is lower than the mains voltage, each mains voltage input sees a greater increase. In order to solve this problem, auspicious Sa's science and technology develops series single logic IC RD74VT1G now, 10 kinds of duplicate supply level are varied, through using two pieces of independent power to input side and delivery end, have realized low power consumption. New series RD74VT1G use 0.35 μ m craft the same as auspicious Sa's undervoltage in science and technology standard logic IC, ultrafast type series HD74ALVC, can offer undervoltage, high-speed ability, power voltage range the intersection of 1.2 V- and 3.6 V, propagation delay time 3.4 ns (maximum value) (RD74VT1G08, VccIN =2.5± 0.2 V, VccOUT =3.3± 0.3 V) Also include inputting, outputting the tolerance function, can protect IC when inputting, the voltage of the delivery end exceeds the voltage of IC working voltage. While not needing IC operation, if the systematic power supply unit is shut off under the situation, through making the voltage of I/O base pin higher than the mains voltage of IC, can prevent flowing into the surplus electric current of IC, the index offered is suitable for low power consumption, battery-opwered mobile equipment use. Power-handling capability ( Output current) It is 24 mA (Vcc =3.3 Under V) ,Suitable for the bus line to drive. The voltage ranges of two kinds of power of series RD74VT1G are not limited to 1.2 V- 3.6 V. The capsulation that uses is 6 stitches of WCSP, support to have no lead wire to install. The required installation area is 1.4 mm * 0.9 mm * 0.5 mm (maximum value) . Capsulate with the present single power type stitch of HD74LV1GT series 5 of auspicious Sa's science and technology (capsulate the size: 2.0 Mm * 2.1 mm * 0.95 mm (maximum value) Compare, WCSP is probably small 70%, make the end product more small and more exquisite.