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MC145404DW Scheda tecnica(PDF) 3 Page - LANSDALE Semiconductor Inc.

Il numero della parte MC145404DW
Spiegazioni elettronici  Drivers/Receivers RS 232/EIA??32?밇 and CCITT V.28
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Produttore elettronici  LANSDALE [LANSDALE Semiconductor Inc.]
Homepage  http://www.lansdale.com
Logo LANSDALE - LANSDALE Semiconductor Inc.

MC145404DW Scheda tecnica(HTML) 3 Page - LANSDALE Semiconductor Inc.

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Issue A
ABSOLUTE MAXIMUM RATINGS
(Voltages referenced to GND, except where noted)
Rating
Symbol
Value
Unit
DC Supply Voltage (VDD ≥ VCC)
VDD
VSS
VCC
– 0.5 to + 13.5
+ 0.5 to – 13.5
– 0.5 to + 6.0
V
Input Voltage Range
Rx1 – Rx
n
DI1 – DI
n
VIR
VSS – 15 to VDD + 15
0.5 to VCC + 15
V
DC Current Drain per Pin
I
± 00
mA
Power Dissipation
PD
1
W
Operating Temperature Range
TA
– 40 to + 85
°C
Storage Temperature Range
Tstg
– 85 to + 150
°C
DC ELECTRICAL CHARACTERISTICS (All polarities referenced to GND = 0 V, TA = – 40 to + 85°C)
Parameter
Symbol
Min
Typ
Max
Unit
DC Supply Voltage
VDD
VSS
VCC
4.5
– 4.5
4.5
5 to 12
– 5 to – 12
5
13.2
– 13.2
5.5
V
Quiescent Supply Current (Outputs Unloaded, Inputs Low)
VDD = + 12 V
VSS = – 12 V
VCC = + 5 V
IDD
ISS
ICC
425
– 400
110
635
– 600
200
µA
RECEIVER ELECTRICAL SPECIFICATIONS
(Voltage polarities referenced to GND = 0 V, VDD = + 12 V, VSS = – 12 V, TA = – 40 to + 85°C, VCC = + 5 V, ± 10%)
Characteristic
Symbol
Min
Typ
Max
Unit
Input Turn–On Threshold
Rx1 – Rx
n
VDO = VOL
Von
1.35
1.8
2.35
V
Input Turn–Off Threshold
Rx1 – Rx
n
VDO = VOH
Voff
0.75
1
1.25
V
Input Threshold Hysteresis
∆ = Von – Voff
Vhys
0.6
0.8
V
Input Resistance
(VSS – 15 V) ≤ V Rx1 – Rxn ≤ (VDD + 15 V)
Rin
3
5.4
7
k
High Level Output Voltage
Iout = – 20 µA
VRx = – 3 to – 25 V* (DO1 – DOn)Iout = – 1.0 mA
VOH
4.9
3.8
4.9
4.3
V
Low Level Output Voltage
Iout = + 2 mA
VRx = + 3 to + 25 V* (DO1 – DOn)Iout = + 4 mA
VOL
0.02
0.5
0.5
0.7
V
* This is the range of input voltages as specified by EIA–232–E to cause a receiver to be in the high or low.
This device contains circuitry to protect the
inputs and 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.
For proper operation it is recommended that
Vout and Vin be constrained to the ranges
described as follows:
Digital I/O: Driver Inputs (DI):
(GND ≤ VDI ≤ VCC).
Receiver Outputs (DO):
(GND ≤ VDO ≤ VCC).
EIA–232 I/O: Driver Outputs (Tx):
(VSS ≤ VTx1 – Txn ≤ VDD).
Receiver Inputs (Rx):
VSS – 15 V ≤ VRx1 – Rxn ≤ VDD
+ 15 V).
Reliability of operation is enhanced if unused
outputs are tied off to an appropriate logic
voltage level (e.g., either GND or VCC for DI,
and GND for Rx).
LANSDALE Semiconductor, Inc.
ML145403, ML145404, ML145405, ML145408


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