Interface Characteristics; Table A-2. Eia-232-D Interface Transmitter Characteristics - Motorola MVME162 User Manual

N 1. A high EIA-232-D signal level is +3 to +15 volts. A low level is
otes
-3 to -15 volts. Connecting units in parallel may produce out-
of-range voltages and is contrary to specifications.
2. The EIA-232-D interface is intended to connect a terminal to a
modem. When computers are connected without modems,
one computer must be configured as a modem and the other
as a terminal.

Interface Characteristics

The EIA-232-D interface standard specifies all parameters for serial binary
data interchange between DTE and DCE devices using unbalanced lines. EIA-
232-D transmitter and receiver parameters applicable to the MVME162 are
listed in Tables A-2 and A-3.

Table A-2. EIA-232-D Interface Transmitter Characteristics

Parameter
Output voltage (with load resistance of 3000Ω
to 7000Ω)
Open circuit output voltage
Short circuit output current (to ground or any
other interconnection cable conductor)
Power off output resistance
Output transition time (for a transition region
of -3V to +3V and with total load capacitance,
including connection cable, of less than 2500pF)
Open circuit slew rate
MVME162/D2
EIA-232-D Connections
Value
Minimum Maximum
±8.5
±12
±100
300
2
30
A
Unit
V
V
mA
Ω
µs
V/µs
A-3