The Intersil ISL8499 device is a low ON-Resistance, low

voltage, bidirectional, Quad SPDT (Dual DPDT) analog

switch designed to operate from a single +1.65V to +4.5V

supply. Targeted applications include battery powered

equipment that benefit from low rON (0.24Ω) and fast

switching speeds (tON = 15ns, tOFF = 13ns). The digital logic

input is 1.8V logic-compatible when using a single +3V supply.

With a supply voltage of 4.2V and logic high voltage of 2.85V

at both logic inputs, the part draws only 10µA max of ICC

current.

Cell phones, for example, often face ASIC functionality

limitations. The number of analog input or GPIO pins may be

limited and digital geometries are not well suited to analog

switch performance. This part may be used to “mux-in”

additional functionality while reducing ASIC design risk. The

ISL8499 is offered in small form factor packages, alleviating

board space limitations.

The ISL8499 consists of four SPDT switches. It is configured

as a dual double-pole/double-throw (DPDT) device with two

logic control inputs that control two SPDT switches each. The

configuration can be used as a dual differential 2-to-1

multiplexer/demultiplexer. The ISL8499 is pin compatible with

the STG3699 and DG2799.

Features

• Drop in Replacement for the STG3699 and DG2799

• ON-Resistance (rON)

- V+ = +4.3V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.24Ω

- V+ = +3.0V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.26Ω

- V+ = +1.8V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.45Ω

• rON Matching between Channels . . . . . . . . . . . . . . . . . 0.04Ω

• rON Flatness Across Signal Range . . . . . . . . . . . . . . . 0.05Ω

• Single Supply Operation . . . . . . . . . . . . . . . +1.65V to +4.5V

• Low Power Consumption (PD) . . . . . . . . . . . . . . . . . <0.2µW

• Fast Switching Action (V+ = +4.3V)

- tON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15ns

- tOFF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13ns

• Guaranteed Break-Before-Make

• 1.8V Logic Compatible (+3V supply)

• Low ICC Current when VinH is not at the V+ Rail

• Available in 16 Ld 3x3 TQFN, 16 Ld 3x3 QFN and

16 Ld TSSOP

• ESD HBM Rating

- COM Pins. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9kV

- All Other Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4kV

• Pb-Free Available (RoHS Compliant)

Applications

• Battery Powered, Handheld, and Portable Equipment

- Cellular/Mobile Phones

- Pagers

- Laptops, Notebooks, Palmtops

• Portable Test and Measurement

• Medical Equipment

• Audio and Video Switching