ABSOLUTE MAXIMUM RATINGS
(Voltages referenced to GND, except where noted)
This device contains circuitry to protect the
inputsand outputs against damage due to high
static voltages or electric fields; however, it is
advised that normal precautions be taken to
avoid applications of any voltage higher than
maximum rated voltages to this high imped-
ance circuit.
Rating
Symbol
Value
Unit
DC Supply Voltage (V
≥ V
)
V
V
– 0.5 to + 13.5
+ 0.5 to – 13.5
– 0.5 to + 6.0
V
DD
CC
DD
SS
V
CC
Input Voltage Range
V
IR
V
Rx1 – Rxn
DI1 – DIn
V
– 15 to V
+ 15
SS
0.5 to V
DD
+ 15
For proper operation it is recommended that
CC
V
and V be constrained to the ranges
out
in
described as follows:
DC Current Drain per Pin
Power Dissipation
I
± 00
mA
W
Digital I/O: Driver Inputs (DI):
P
D
1
(GND ≤ V ≤ V ).
DI CC
Receiver Outputs (DO):
(GND ≤ V ≤ V ).
Operating Temperature Range
Storage Temperature Range
T
– 40 to + 85
°C
°C
A
DO CC
T
stg
– 85 to + 150
EIA–232 I/O: Driver Outputs (Tx):
(V ≤ V
≤ V ).
SS Tx1 – Txn
DD
Receiver Inputs (Rx):
– 15 V ≤ V
V
≤ V
Rx1 – Rxn DD
SS
+ 15 V).
Reliabilityofoperationisenhancedifunused
outputs are tied off to an appropriate logic
voltage level (e.g., either GND or V
and GND for Rx).
for DI,
CC
DC ELECTRICAL CHARACTERISTICS (All polarities referenced to GND = 0 V, T = – 40 to + 85°C)
A
Parameter
Symbol
Min
Typ
Max
Unit
DC Supply Voltage
V
4.5
– 4.5
4.5
5 to 12
– 5 to – 12
5
13.2
– 13.2
5.5
V
DD
V
SS
CC
V
Quiescent Supply Current (Outputs Unloaded, Inputs Low)
V
V
V
= + 12 V
= – 12 V
I
—
—
—
425
– 400
110
635
– 600
200
µA
DD
SS
DD
I
SS
CC
= + 5 V
I
CC
RECEIVER ELECTRICAL SPECIFICATIONS
(Voltage polarities referenced to GND = 0 V, V
= + 12 V, V
= – 12 V, T = – 40 to + 85°C, V
= + 5 V, ± 10%)
CC
DD
Characteristic
SS
A
Symbol
Min
Typ
Max
Unit
Input Turn–On Threshold
= V
Rx1 – Rxn
Rx1 – Rxn
V
1.35
1.8
2.35
V
on
V
DO
Input Turn–Off Threshold
= V
OL
V
off
0.75
0.6
3
1
1.25
—
V
V
V
DO
OH
Input Threshold Hysteresis
V
hys
0.8
5.4
∆ = V – V
on
off
Input Resistance
R
7
kΩ
V
in
(V
SS
– 15 V) ≤ V Rx1 – Rxn ≤ (V
+ 15 V)
DD
High Level Output Voltage
= – 3 to – 25 V* (DO1 – DOn)
I
= – 20 µA
out
= – 1.0 mA
V
OH
4.9
3.8
4.9
4.3
—
—
V
I
out
Rx
Low Level Output Voltage
= + 3 to + 25 V* (DO1 – DOn)
I
I
= + 2 mA
= + 4 mA
V
OL
—
—
0.02
0.5
0.5
0.7
V
out
out
V
Rx
* This is the range of input voltages as specified by EIA–232–E to cause a receiver to be in the high or low.
MOTOROLA
MC145403•MC145404•MC145405•MC145408
3
MOTOROLA [ MOTOROLA ]
