News & Events
Intersil's New MightyMUX Quad SPST Switch ICs Offer Best-In-Class R(ON) and R(ON) Flatness in Space-Saving Near-Chip-Scale Packaging

MILPITAS, CA, May 21, 2003 – Intersil Corporation (NASDAQ: ISIL), a world leader in the design and manufacture of high performance analog and wireless networking solutions, today announced three new additions to their rapidly growing MightyMUX™ high-performance low-voltage analog switch line – the ISL43143, ISL43144 and ISL43145. These high-performance ICs each contain four single-pole single-throw (SPST) analog switches that boast of best-in-class R(ON) and R(ON) flatness for switches operating below 15 V. The near-chip-scale 4 X 4 mm Quad Flat No-lead (QFN) package offers significant savings in board space. Targeted applications include high-precision equipment used for medical, communications, and testing.

The ISL43143, ISL43144 and ISL43145 have the flexibility to operate from a +2 V to +12 V single supply or from a +/-2 V to +/-6 V dual supply. R(ON) is less than 25 Ohms, at +/-5 V and 25 deg. C, and R(ON) flatness is less than 5 Ohms guaranteed across input voltage and industrial temperature. The near-chip-scale 16-pad 4 X 4 mm QFN package greatly conserves board space, occupying 50% less real estate than the TSSOP. A 16-lead TSSOP package option is also available.

The ISL43143 includes four normally closed (NC) switches. The ISL43144 has four normally open (NO) switches. The ISL43145 provides flexibility with two NO and two NC switches that can be configured as dual SPDT switches or a dual 2:1 multiplexer.

A very low off-state leakage current of less than 2.5 nA at +85 deg. C lengthens hold times in sample-and-hold-circuits and fast switching speeds [t(on) = 52 ns, t(off) = 40 ns with dual 5-V supply] reduce propagation delays in timing sensitive applications. These switches offer minimal charge injection of less than 5 pC to maximize signal integrity. All ICs are fully specified at +/-5 V, 12 V, 5 V and 3.3 V to save designers characterization time and increase their confidence in the device’s performance. Intersil offers more guaranteed specifications for these ICs than any competing products.

ISL43143, ISL43144 and ISL43145 Technical Details

• 2 V to 12 V (15 V max) single supply or +/-2 V to +/-6 V (+/-7.5 V max) dual supply
• Low R(ON) of less than 25 Ohms (+/-5 V at 25 deg. C) reduces signal loss
• R(ON) flatness of less than 5 Ohms guaranteed across input voltage and industrial temperature
• Close R(ON) channel matching of less than 2 Ohms across temperature reduces channel bias
• Fully specified at +/-5 V, 12 V, 5 V and 3.3 V to save designers characterization time
• Low off-leakage current, 2.5 nA max at +85 deg. C, minimizes offsets and improves hold times
• Fast switching, t(on) = 52 ns, t(off) = 40 ns with +/-5 V supply, reduces propagation delays
• Very low charge injection, 5 pC (max), maximizes signal integrity
• Minimum 2000 V ESD rated per Method 3015.7 improves yields and reliability
• TTL and CMOS compatible for flexibility
• ISL43143 – 4 NC SPST switches; ISL43144 – 4 NO SPST switches
• ISL43145 – 2 NC + 2 NO that can be configured as 2 SPDT switches or a dual 2:1 multiplexer
• Packages: 16-pad 4 X 4 mm QFN, 16-lead TSSOP

ISL43143, ISL43144 and ISL43145 Applications
Use with/for:

• Low supply voltage DACs and ADCs
• Sample and hold circuits
• Op-amp gain switching
• High-frequency analog switching
• High-speed multiplexing
• Variable line terminators

Use in:

• Medical Equipment: Magnetic Resonance Imaging (MRI), Computed Axial Tomography (CAT), Positron Emission, Tomography (PET), Ultrasound, Blood Analyzers, Patient Monitoring
• Communications: Data Switches/Routers; Telecom Infrastructure, xDSL Modems, Wireless Infrastructure
• Instrumentation: Automatic Test Equipment, Oscilloscope, Multimeter, Mechanical Relay Replacement, Diagnostics
• Audio and video switching – production, surveillance

Price and Availability
The ISL43143, ISL43144 and ISL43145 are available now. Pricing per IC in quantities of 100 to 999 units: $0.68 for the ISL43143IR, ISL43144IR and ISL43145IR in QFN; $0.65 for the ISL43143IV, ISL43144IV and ISL43145IV in TSSOP. Both the QFN and TSSOP packages are rated for a temperature range of –40 to +85 deg. C and are available on tape & reel. About Intersil
Intersil Corporation is a global semiconductor leader in the design and manufacture of high performance analog and wireless networking solutions. Intersil’s product portfolios address four fast growing markets – flat panel displays, optical storage (CD and DVD recordable), power management and wireless networking. Intersil brings added customer value in providing complete silicon, software and reference design solutions to new products that enhance the computing experience for people wherever they live, work or travel. For more information about Intersil or to find out how to become a member of our winning team, visit the company's web site and career page at: www.intersil.com

This release may include "forward looking statements" that are subject to risks and uncertainties. For information identifying economic, political, climatic, currency, regulatory, technological, competitive and some other important factors that could cause actual results to differ materially from those anticipated in the forward looking statements, see Intersil’s Safe Harbor Forward Looking Statement disclaimer found at http://www.intersil.com/legal.asp, as well as Intersil’s SEC filings as updated from time to time, found at http://www.sec.gov. MightyMUX is a trademark of Intersil Americas Inc.