1. General description

The XS3A4051 is a low-ohmic 8-channel analog switch, suitable for use as an analog or digital

multiplexer/demultiplexer. The XS3A4051 has three digital select inputs (S1 to S3), eight

independent inputs/outputs (Y0 to Y7) and a common input/output (Z). All eight switches share

an enable input (E). A HIGH on E causes all switches into the high impedance OFF-state,

independent of Sn.

Schmitt trigger action at the digital inputs makes the circuit tolerant to slower input rise and fall

times. Low threshold digital inputs allows this device to be driven by 1.8 V logic levels in 3.3 V

applications without significant increase in supply current ICC. This makes it possible for the

XS3A4051 to switch 4.3 V signals with a 1.8 V digital controller, eliminating the need for logic level

translation. The XS3A4051 allows signals with amplitude up to VCC to be transmitted from Z to Yn

or from Yn to Z. Its low ON resistance (0.5 Ω) and flatness (0.13 Ω) ensures minimal attenuation

and distortion of transmitted signals.

2. Features and benefits

• Wide supply voltage range from 1.4 V to 4.3 V

• Very low ON resistance (peak):

• 1.6 Ω (typical) at VCC = 1.4 V

• 1.0 Ω (typical) at VCC = 1.65 V

• 0.55 Ω (typical) at VCC = 2.3 V

• 0.50 Ω (typical) at VCC = 2.7 V

• 0.50 Ω (typical) at VCC = 4.3 V

• Break-before-make switching

• High noise immunity

• ESD protection:

• HBM ANSI/ESDA/JEDEC JS-001 exceeds 8000 V

• CDM ANSI/ESDA/JEDEC JS-002 exceeds 1000 V

• IEC61000-4-2 contact discharge exceeds 8000 V for switch ports

• CMOS low-power consumption

• Latch-up performance exceeds 100 mA per JESD78 Class II Level A

• Low-switching threshold levels

• Control input accepts voltages above supply voltage

• Very low supply current, even when input is below VCC

• High current handling capability (350 mA continuous current under 3.3 V supply)

• Specified from -40 °C to +85 °C and from -40 °C to +125 °C

3. Applications

• Appliances

• Communication Systems

• Medical Equipment

• Analog Sensor Monitoring

• Audio Routing/Switching

• Test and Measurement