LMH6574 Datasheet, PDF (14/15 Pages) National Semiconductor (TI) – 4:1 High Speed Video Multiplexer

Other Applications (Continued)
ESD PROTECTION
The LMH6574 is protected against electrostatic discharge
(ESD) on all pins. The LMH6574 will survive 2000V Human
Body model and 200V Machine model events. Under normal
operation the ESD diodes have no effect on circuit perfor-
mance. There are occasions, however, when the ESD di-
odes will be evident. If the LMH6574 is driven by a large
signal while the device is powered down the ESD diodes will
conduct . The current that flows through the ESD diodes will
either exit the chip through the supply pins or will flow
through the device, hence it is possible to power up a chip
with a large signal applied to the input pins. Using the
shutdown mode is one way to conserve power and still
prevent unexpected operation.
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