SN74LVC1G3157-Q1: PIN A - Off Impedance and Protection Diodes?

Hey Alex,

We actually have 2 really good FAQs on this! If you haven't had a chance, take a look at the FAQ page to see more helpful topics we try to tackle to help people get quicker answers to their problems!

Alex Reid1 said:

Can you please provide details on the what the impedance of pin A (4-common terminal) is when the device is powered off

Please see FAQ : [FAQ] What is the Off Resistance of an Analog Switch / Multiplexer?. Should just be the voltage differential of the input and output of the off-channel divided by the off-leakage max spec.

Alex Reid1 said:

if this pin as internal protection diodes that are connected to VCC? 

Please see : [FAQ] Do TI Analog Switches/Multiplexers have Internal ESD Protection?. Quick check in the datasheet and it does look it there is a positive diode from the I/O to VCC. One from the I/O to GND too.

Thanks!
Rami