Serial interfaces replace and save space

Intersil has made two additions to its Linearlink high-performance RS232 interface line - the ISL4260E and ISL83386E.

Intersil has made two additions to its Linearlink high-performance RS232 interface line - the ISL4260E and ISL83386E.

The ISL4260E joins the previously announced ISL424XE/ISL4238E RS232 transceivers as the worlds smallest in a tiny 5 x 5 x 0.9mm QFN package.

The ISL83386E is a 20-lead TSSOP packaged version.

Both package types are suitable for use in any handheld battery-powered space-constrained device.

The ISL4260E and ISL83386E each have three transmitters and two receivers.

Both devices operate over a 3.0 to 5.5V supply range and are fully compatible with 3V, mixed 3 and 5V, and 5V-only systems.

Each IC features a very low 300uA supply current and an even lower power-down current of only 150nA.

The ISL83386E is a pin-for-pin match with the MAX3386E and SP3203E, and is intended for use in PDAs and other handheld devices requiring an RS232 link to a PC.

Intersil's ISL424X series transceivers complete the serial communications interface on the PC end of the link.

A unique VL supply pin improves interoperation in mixed-voltage logic systems, by adjusting the input thresholds and output logic levels to match the external supply.

The RS-232 transmitters/receivers meet EIA/TIA-232 and V.28/V.24 specifications, even at 3V.

ESD protection is provided (+/-15 kV, IEC61000-4-2 air gap and human body model) on all transmitter outputs and receiver inputs.

The ISL4260E's QFN package occupies 40% less board space than the TSSOP.

Small lands on the underside perimeter provide circuit contact so there are no leads to become bent during handling or assembly.

Unlike chip-scale packages that use an array of solder bumps, the perimeter lands of the QFN package allow post assembly inspection of solder joints.

Special manufacturing equipment is not needed.

Back to top