the phone. The receiver outputs will sink to zero for low
outputs, but will not exceed V
L
for logic highs. The
input logic levels for the transmitters are also altered,
scaled by the magnitude of the V
L
input. The devices
will work with V
L
as low as 1.8V. This is useful with cell
phones and other power-efficient devices with core
logic voltage levels that go as low as 1.8V.
Chip Information
TRANSISTOR COUNT: 1323
MAX3388E/MAX3389E
2.5V, ±15kV ESD-Protected RS-232
Transceivers for PDAs and Cell Phones
10 ______________________________________________________________________________________
