TMUX7436F: Datasheet clarification

Marvn Arcangel

Genius 11945 points

Part Number: TMUX7436F
Other Parts Discussed in Thread: TMUX7236

Hi Team,

Can you please clarify the information found in the datasheet of TMUX7436F?

In the image above, the single supply is 8V to 44V, and Dual supply +/-5V to +/-22V. On page 5 it's written that the VDD positive power supply voltage min. 5V max. 44V and power supply voltage differential min 8V max. 44V that doesn't seem to match.

Can you please clarify?

Regards,

Marvin

over 2 years ago

+1 Clemens Ladisch over 2 years ago

Guru 311380 points

This device has three power supply pins: V_SS, GND, and V_DD. (GND is used only as reference for the logic signals.)

The positive supply, V_DD − GND, must be at least 5 V.
The sum of the positive and negative supplies ((V_DD − GND) + (GND − V_SS)) must be at least 8 V.

When using a single supply, GND = V_SS, so the only way to reach 8 V for V_DD − V_SS is for V_DD − GND to be 8 V.

0 Marvn Arcangel over 2 years ago in reply to Clemens Ladisch

TI__Genius 11945 points

Hi Clemens,

This helps. I was looking for something that supports a single 5V VCC to GND as supply, so this chip clearly doesn’t work.

The TMUX7236 seems to support a single 5V (and 9V) supply am i correct?

0 Clemens Ladisch over 2 years ago in reply to Marvn Arcangel

Guru 311380 points

Yes. Here is a search for two-channel, 2:1, single 5 V switches: ti.com/switches-multiplexers/analog/products.html#p1143=2:1%20SPDT&p480=2&p3306=5

Switches & multiplexers

Switches & multiplexers forum

TMUX7436F: Datasheet clarification