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ML145403-6P View Datasheet(PDF) - LANSDALE Semiconductor Inc.

Part NameDescriptionManufacturer
ML145403-6P Drivers/Receivers RS 232/EIA–232–E and CCITT V.28 LANSDALE
LANSDALE Semiconductor Inc. LANSDALE
ML145403-6P Datasheet PDF : 8 Pages
1 2 3 4 5 6 7 8
LANSDALE Semiconductor, Inc.
ML145403, ML145404, ML145405, ML145408
1
24
22
VDD VCC 3
DI1
Tx1
20
DI2
5
Tx2
18
DI3
7
Tx3
16
DI4
9
Tx4
14
DI5
VDD
11
Tx5
GND
12 13
Vin = ± 2 V
Rout
Vin
I
DRIVERS
DI
50%
tf
Tx
90%
10%
tPHL
RECEIVERS
Rx
50%
tPHL
90%
DO
10%
tf
Figure 1. Power–Off Source Resistance
Illustrated for ML145408
+3V
0V
tr
VOH
VOL
tPLH
+3V
0V
tPLH
VOH
VOL
tr
DRIVERS
+3V
Tx
–3V
tSHL
+3V
–3V
tSLH
Slew Rate =
6V
tSLH or tSHL
Figure 2. Switching Characteristics
Figure 3. Slew Rate Characteristics
PIN DESCRIPTIONS
VCC
Digital Power Supply
The digital supply pin, which is connected to the logic power
supply (+ 5.5 V maximum).
GND
Ground
Ground return pin is typically connected to the signal ground
pin of the EIA–232–E connector (Pin 7) as well as to the logic
power supply ground.
VDD
Most Positive Device Pin
The most positive power supply pin, which is typically + 5 to
+ 12 V.
VSS
Most Negative Device Pin
The most negative power supply pin, which is typically – 5 to – 12 V.
Rx1 – Rxn
Receive Data Input Pins
These are the EIA–232–E receive signal inputs. A voltage
between + 3 and + 25 V is decoded as a space, and causes the
corresponding DO pin to swing to ground (0 V). A voltage
between – 3 and – 25 V is decoded as a mark, and causes the
corresponding DO pin to swing to VCC.
DO1 – DOn
Data Output Pins
These are the receiver digital output pins which swing
fromVCC to GND. Each output pin is capable of driving one
LSTTL input load.
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