1. General description
The 74AHC1G66-Q100; 74AHCT1G66-Q100 is a single-pole, single-throw analog switch with two
input/output terminals (nY and nZ) and a digital enable input (nE). When nE is LOW, the analog
switch is turned off. The enable input is overvoltage tolerant. This feature allows the use of these
devices as translators in mixed voltage environments.
This product has been qualified to the Automotive Electronics Council (AEC) standard Q100
(Grade 1) and is suitable for use in automotive applications.

2. Features and benefits
• Automotive product qualification in accordance with AEC-Q100 (Grade 1)
• Specified from -40 °C to +85 °C and from -40 °C to +125 °C
• Very low ON resistance:
• 26 Ω (typ.) at VCC = 3.0 V
• 16 Ω (typ.) at VCC = 4.5 V
• 14 Ω (typ.) at VCC = 5.5 V
• Wide supply voltage range from 2.0 to 5.5 V
• Overvoltage tolerant control input to 5.5 V
• High noise immunity
• CMOS low power dissipation
• Latch-up performance exceeds 100 mA per JESD 78 Class II Level A
• SOT353-1 and SOT753 package options
• ESD protection:
• MIL-STD-883, method 3015 exceeds 2000 V
• HBM JESD22-A114F exceeds 2000 V
• MM JESD22-A115-A exceeds 200 V (C = 200 pF, R = 0 Ω)