1 Features
• Functional safety-capable
– Documentation available to aid functional safety
system design
• Qualified for automotive applications
• AEC-Q100 qualified with the following results:
– Device temperature grade 1: –40°C to +125°C
ambient operating temperature range
– Device HBM ESD classification level H2
– Device CDM ESD classification level C3B
• 1.65 V to 5.5 V VCC operation
• Inputs accept voltages to 5.5 V
• High on-off output voltage ratio
• High degree of linearity
• High speed, typically 0.5 ns
(VCC = 3 V, CL = 50 pF)
• Rail-to-rail input output
• Low on-state resistance, typically ≉6 Ω
(VCC = 4.5 V)

2 Applications
• Wireless devices
• Audio and video signal routing
• Portable computing
• Wearable devices
• Signal gating, chopping, modulation or
demodulation (modem)
• Signal multiplexing for analog-to-digital and digitalto-
analog conversion systems

3 Description
The design of this dual bilateral analog switch is for
1.65 V to 5.5 V VCC operation. The SN74LVC2G66-
Q1 can handle both analog and digital signals. The
device permits signals with amplitudes of up to 5.5
V (peak) to be transmitted in either direction. Each
switch section has its own enable-input control (C). A
high-level voltage applied to C turns on the associated
switch section.
Applications include signal gating, chopping,
modulation or demodulation (modem), and signal
multiplexing for analog-to-digital and digital-to-analog
conversion systems.