XR33032 Datasheet, PDF (8/19 Pages) Exar Corporation – WIDE SUPPLY 18V TOLERANT RS-485/RS-422 TRANSCEIVERS

XR33032/35/38
WIDE SUPPLY 18V TOLERANT RS-485/RS-422 TRANSCEIVERS
REV. 1.0.0
NOTE:
1.
2.
3.
Change in Magnitude of Differential Output Voltage and Change in Magnitude of Common Mode Output Voltage
are the changes in output voltage when DI input changes state.
The hot swap feature disables the DE and RE inputs for the first 10µs after power is applied. Following this time
period these inputs are weakly pulled to their disabled state (low for DE, high for RE) until the first transition, after
which they become high impedance inputs.
The transceivers are put into shutdown by bringing RE High and DE Low simultaneously for at least 600ns. If the
control inputs are in this state for less than 50ns, the device is guaranteed to not enter shutdown. If the enable
inputs are held in this state for at least 600ns the device is assured to be in shutdown. Note that the receiver and
driver enable times increase significantly when coming out of shutdown.
BLOCK DIAGRAMS
FIGURE 1. HALF DUPLEX 8 NSOIC
RO ¹
R
8 _VCC
RE ²
7 _B/Z
DE ³
6 _A/Y
DI ⁴
D
5 _GND
8