Datenblatt-pdf.com


ML145583 Schematic ( PDF Datasheet ) - LANSDALE Semiconductor

Teilenummer ML145583
Beschreibung 3.3 Volt Only Driver/Receiver
Hersteller LANSDALE Semiconductor
Logo LANSDALE Semiconductor Logo 




Gesamt 7 Seiten
ML145583 Datasheet, Funktion
www.DataSheet4U.com
ML145583
3.3 Volt Only Driver/Receiver with
an Integrated Standby Mode
RS 232/EIA–232–E and CCITT V.28
Legacy Device: Motorola MC145583
The ML145583 is a CMOS transceiver composed of three drivers and
five receivers that fulfills the electrical specifications of EIA–232–E,
EIA–562, and CCITT V.28 while operating from a single + 3.3 or + 5.0 V
power supply. This transceiver is a high–performance, low–power con-
sumption device that is equipped with a standby function.
A voltage tripler and inverter converts the + 3.3 V to ± 8.8 V, or a volt-
age doubler and inverter converts the + 5.0 V to ± 8.8 V. This is accom-
plished through an on–chip 40 kHz oscillator and five inexpensive exter-
nal capacitors.
FEATURES
Drivers:
• ± 5 V Minimum Output Swing at 3.3 or 5.0 V Power Supply
• 300 Power–Off Impedance
• Output Current Limiting
• Three–State Outputs During Standby Mode
Receivers:
• ± 25 V Input Range
• 3 to 7 kInput Impedance
• 0.8 V Hysteresis for Enhanced Noise Immunity
• Three–State Outputs During Standby Mode
Ring Monitor Circuit:
• Invert the Input Level on Rx1 to Logic Output Level on RIMON at
Standby Mode
28
1
SOIC 28W = -7P
SOG PACKAGE
CASE 751F
PACKAGE
SOIC 28W
MOTOROLA
LANSDALE
MC145583DW ML145583-7P
Note: Lansdale lead free (Pb) product, as it
becomes available, will be identified by a part
number prefix change from ML to MLE.
PIN ASSIGNMENT
C5+ 1
28 C2+
GND 2
27 VCC
C5– 3
RIMON 4
VSS 5
STB 6
Rx1 7
Rx2 8
Rx3 9
Tx1 10
Rx4 11
Tx2 12
Rx5 13
Tx3 14
26 C2–
RING
MONITOR
CIRCUIT
(INVERTING)
25
24
C1+
C1–
23 VDD
22 DO1
21 DO2
20 DO3
19 DI1
18 DO4
17 DI2
16 DO5
15 DI3
Page 1 of 7
www.lansdale.com
Issue A






ML145583 Datasheet, Funktion
ML145583
www.DataSheet4U.com
LANSDALE Semiconductor, Inc.
ESD PROTECTION
ESD protection on IC devices that have their pins accessible
to the outside world is essential. High static voltages applied to
the pins when someone touches them either directly or indi-
rectly can cause damage to gate oxides and transistor junctions
by coupling a portion of the energy from the I/O pin to the
power supply buses of the IC. This coupling will usually occur
through the internal ESD protection diodes which are designed
to do just that. The key to protecting the IC is to shunt as much
of the energy to ground as possible before it enters the IC.
Figure 1 shows a technique which will clamp the ESD voltage
at approximately ± 15 V using the MMBZ15VDLT1. Any
residual voltage which appears on the supply pins is shunted to
ground through the capacitors C1and C2.
MMBZ15VDLT1 x 8
C5+
GND
C5–
RIMON
VSS
STB
Rx1
Rx2
Rx3
Tx1
Rx4
Tx2
Rx5
Tx3
C2+
VCC
C2–
C1+
C1–
VDD
DO1
DO2
DO3
DI1
DO4
DI2
DO5
DI3
Figure 1. ESD Protection Scheme
0.1 µF
C1
0.1 µF
C2
Page 6 of 7
www.lansdale.com
Issue A

6 Page







SeitenGesamt 7 Seiten
PDF Download[ ML145583 Schematic.PDF ]

Link teilen




Besondere Datenblatt

TeilenummerBeschreibungHersteller
ML1455833.3 Volt Only Driver/ReceiverLANSDALE Semiconductor
LANSDALE Semiconductor

TeilenummerBeschreibungHersteller
CD40175BC

Hex D-Type Flip-Flop / Quad D-Type Flip-Flop.

Fairchild Semiconductor
Fairchild Semiconductor
KTD1146

EPITAXIAL PLANAR NPN TRANSISTOR.

KEC
KEC


www.Datenblatt-PDF.com       |      2020       |      Kontakt     |      Suche