Table C-2. Eia-232-D Interface Transmitter Characteristics; Table C-3. Eia-232-D Interface Receiver Characteristics - Motorola MVME2700 Series Installation And Use Manual

EIA-232-D Connections
Interface Characteristics
C
C-4
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
MVME2700 are listed in the following tables.

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

Parameter
Output voltage (with load resistance of 3000 to
7000 )
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
The MVME2700 conforms to EIA-232-D specifications. Note that
although the EIA-232-D standard recommends the use of short
interconnection cables not more than 50 feet (15m) in length, longer cables
are permissible provided the total load capacitance measured at the
interface point and including signal terminator does not exceed 2500pF.

Table C-3. EIA-232-D Interface Receiver Characteristics

Parameter
Input signal voltage
Input high threshold voltage
Input low threshold voltage
Input hysteresis
Input impedance ( 15V < V
Minimum
8.5
300
Minimum
0.75
1.0
< +15V) 3000
in
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Value
Unit
Maximum
V
12 V
100 mA
W
2 s
30 V/ s
Value
Unit
Maximum
25 V
V
V
V
7000 W