CT1775 Datasheet, PDF (12/14 Pages) Aeroflex Circuit Technology – CT1775 Universal MacAir/1553 Dumb RTU Hybrid

PIN FUNCTION AND LOADING TABLE (con’t)
PIN
#
NAME
I_IH I_IL I_OH I_OL
(µA) (mA) (mA) (mA)
DESCRIPTION
66 -12V
67 RX DATA IN
68 TX DATA OUT
-12V power supply input.
Receiver input.
Inverted transmitter output.
NOTES: In the above table, the symbols are defined as follows: *Indicates use of an internal pull-up resistor.
IIH = maximum input HIGH current with VIN = 2.5 volts.
IIL = maximum input LOW current with VIN = 0.4 volts.
IOH = maximum output HIGH current for VOUT = 2.5 volts minimum.
IOL = maximum output LOW current for VOUT = 0.4 volts maximum.
SCDCT1775 Rev B
12