XR33152 Datasheet, PDF (16/19 Pages) Exar Corporation – TIA-485/TIA-422 Transceivers

XR33152/56/58
Applications Information
Low Power Shutdown Mode
The XR33156 has a low-power shutdown mode that is
initiated by bringing both RE high and DE low simultaneously.
While in shutdown the XR33156 draws less than 1μA of
supply current. DE and RE may be tied together and driven
by a single control signal. Devices are guaranteed not to
enter shutdown if RE is high and DE is low for less than
50ns. If the inputs are in this state for at least 600ns, the
parts will enter shutdown.
XR33156 enable times, t_ZH and t_ZL, apply when the part is
not in low power shutdown state. Enable times, t_ZH(_SHDN)
and t_ZL(_SHDN) apply when the part is shutdown. The driver
and receiver take longer to become enabled from low
power shutdown t_ZH(_SHDN) and t_ZL(_SHDN) than from driver
or receiver disable mode (t_ZH and t_ZL).
Product Selector Guide
Part Number
XR33152
XR33156
XR33158
Operation
Half duplex
Full duplex
Half duplex
Data Rate
250kbps
20Mbps
Shutdown
No
Yes
No
Receiver/Driver
Enable
No/Yes
Yes/Yes
No/Yes
Nodes
On Bus
320
80
80
Footprint
8-NSOIC
14-NSOIC
8-NSOIC
REV1A
16/19