1. General description

The 74LVC1G3157 is a single-pole double-throw analog switch with a digital select input (S), two

independent inputs/outputs (Y0 and Y1) and a common input/output (Z). Control inputs can be

driven from either 3.3 V or 5 V devices. This feature allows the use of these devices as translators

in mixed 3.3 V and 5 V environments.

Schmitt-trigger action at control inputs makes the circuit tolerant of slower input rise and fall times.

2. Features and benefits

? Wide supply voltage range from 1.65 V to 5.5 V

? Very low ON resistance:

? 7.5 Ω (typical) at VCC = 2.7 V

? 6.5 Ω (typical) at VCC = 3.3 V

? 6 Ω (typical) at VCC = 5 V

? 32 mA continuous switch current

? Break-before-make switching

? High noise immunity

? CMOS low power dissipation

? TTL interface compatibility at 3.3 V

? Latch-up performance meets requirements of JESD 78 Class I

? ESD protection:

? HBM EIA/JESD22-A114-A exceeds 2000V

? MM EIA/JESD22-A115-A exceeds 200V

? Overvoltage tolerant control inputs to 5.5 V

? Multiple package options

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