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July 1996, vol.13, no. 5
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Single-gate logic devices save space in mobile systems and enhance ASIC useA new family of one-gate logic devices from Texas Instruments helps developers of mobile systems such as portable computers, camcorders, remote control units, cellular telephones and handheld devices reduce the size and weight of their designs. The MicroGate family, TI's new family of extremely small logic devices, simplifies the layout of printed circuit boards and can be used to modify the functionality of application specific integrated circuits (ASICs). Its five-pin Small-Outline Transistor (SOT) package makes TI's MicroGate family one of the smallest integrated circuits in the industry. It features a 0.95 mm lead pitch and is only 1.45 mm high. The first 13 devices released in the MicroGate family are derivatives of devices in the AHC (Advanced HCMOS) logic family, which is composed of both CMOS- and TTL-compatible versions. AHC logic offers the same low noise of standard HCMOS devices, but AHC features three times the speed and half the static power consumption of HCMOS. TI's AHC MicroGate devices are compatible with either 5-V or 3.3-V power supplies, easing the migration from 5-V to 3-V supplies that many designs are now undergoing. Future MicroGate devices are being considered from TI's advanced 5-V and 3.3-V logic families. "This type of single-gate device is very useful to designers when a product is in the development stage because they simplify the routing of circuit boards. Because they can be used to slightly modify the functionality of a system after components such as ASICs have already been designed and fabricated, TI's MicroGate devices are useful later in the design cycle as well," said Hal Speed, strategic marketing manager. | |
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