Product category:
Standard Logic Devices
News Release from: Fairchild Semiconductor | Subject: LCX and VCX series
Edited by the Electronicstalk Editorial
Team on 15 June 2004
Low-voltage logic shrinks into DQFN
packages
Fairchild Semiconductor has released a number of 4, 6 and 8-bit LCX and VCX series low-voltage logic functions in the DQFN form factor.
Fairchild Semiconductor has released a number of 4, 6 and 8-bit LCX and VCX series low-voltage logic functions in the DQFN (depopulated very thin quad flat-pack no leads) form factor DQFN, the industry's smallest package for quad, hex and octal logic functions, represents a 75% space savings over traditional TSSOP (thin shrink small outline package) devices
This article was originally published on Electronicstalk on 28 Feb 2001 at 8.00am (UK)
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DQFN is the optimal solution for facilitating feature additions in next-generation cellphones, digital cameras, camera-phones and other ultraportable battery-powered applications.
DQFN provides a number of important design benefits.
Noise and crosstalk between I/O terminals is reduced compared to leaded packages due to the lower capacitance and inductance of DQFN.
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Chips in DQFN also run cooler than in leaded packages due to the exposed die attach paddle underneath.
DQFN has visible solder joints that facilitate easy inspection.
DQFN packaged logic is second-sourced for assured supply.
"DQFN's smaller form factor enables more compact designs", says Ken Murphy, Fairchild's Marketing Manager for Logic Products.
"For example, the 74LCX138BQX decoder/demultiplexer in DQFN can expand the available control signals from the microprocessor to the LCD display and LED drivers for MP3 players, while conserving space".
Currently available LCX and VCX series devices in DQFN include: the 74LCX245BQX 2.5 to 3.3V bidirectional octal transceiver with 5V tolerant inputs and outputs; the 74LCX244BQX 2.5 to 3.3V octal buffer line driver with 5V tolerant I/O; the 74LCX138BQX 2.5 to 3.3V (1-of-8) decoder/demultiplexer with 5V tolerant I/O; the 74VCX08BQX 1.2 to 3.3V quad dual-input AND gate with 3.6V tolerant inputs; and the 74VCX245BQX 1.4 to 3.3V bidirectional octal transceiver with 3.6V tolerant inputs.
Fairchild's LCX and VCX logic functions are fabricated with an advanced CMOS technology to achieve high-speed operation while maintaining low power dissipation.
All models implement the company's patented noise/EMI reduction circuitry and support live insertion/withdrawal.
Electrostatic discharge (ESD) performance is exceptional, with machine and human body models rated at greater than 200 and 2000V, respectively.
All part numbers are available in 3000-piece tape reel formats compatible with high-speed manufacturing processes.
The introduction of these low-voltage logic products in DQFN further expands Fairchild's innovative package offering that includes FLMP, MicroPak and BGA form factors.
These lead-free (Pb-free) products meet or exceed the requirements of the joint IPC/JEDEC standard J-STD-020B and are compliant with the European Union requirements that will take effect in 2005.
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