SOUTH PORTLAND, Maine Fairchild Semiconductor has expanded its offering of low-voltage-technology (LVT) logic devices, rolling 20 parts in a planned portfolio of over 40, including octal and 16-bit functions, with and without bus hold.
The 3.3-V BiCMOS devices are used primarily for off-board driving in backplanes, memory arrays, telecom switches and networking gear. The bus-hold feature maintains the last valid data input during disconnect and eliminates the need for external pull-up or pull-down resistors to prevent floating inputs. The parts are high-speed (under 4 ns) and high-drive (+64/-32 mA).
Fairchild, which has offered a handful of LVT parts for two years, is taking aim at LVT market leaders Texas Instruments Inc. and Philips Semiconductors. The company said its decision to expand the line was based on a perceived opportunity arising from market confusion over the competition's "routinely" changing specifications and names.
Rob Wilson, TI's strategic product marketing manager for logic, said TI has broadened its LVT portfolio in recent years and currently offers more than 50 devices.
"The new parts have new names, but we haven't discontinued any parts," Wilson said. Catherine de Villeneuve, Philips' director of marketing for logic products, said her company hasn't changed product names or specifications.
The 74LVTH16245, 74LVTH162245 and 74LVTH16244 (all with bus hold) and 74LVT16244A and 74LVT162244 (without it) come in 48-lead SSOPs or TSSOPs at 95 cents each in lots of 10,000.
The 74LVTH125, H573 and H574, with bus hold, and the 573 and 574, without it, are available in small-outline IC packages, SSOPs and TSSOPs at 45 cents apiece.
Fairchild: (207) 775-8100
EETInfo No. 624
Philips: (800) 234 7381
EETInfo No. 625
TI: (800) 477-8924, ext. 4500
EETInfo No. 626