ML145583 Datasheet, PDF (2/7 Pages) LANSDALE Semiconductor Inc. – 3.3 Volt Only Driver/Receiver with an Integrated Standby Mode RS 232/EIA-232-E and CCITT V.28

ML145583
CHARGE PUMPS
FUNCTION DIAGRAM
OSC
LANSDALE Semiconductor, Inc.
VCC
C3
+
VDD
VOLTAGE
TRIPLER
C1
C2
C1– C1+ C2–
C2+
+
**
RECEIVER
VDD
*
15 kΩ
+
–
5.4 kΩ
VOLTAGE
INVERTER
GND
+
C4
C5
VSS
C5+ ⁺
C5–
STB
VCC
DO
1.0 V
TURN OFF
DRIVER
* Protection Circuit.
** Capacitors C1 and C2 are replaced by a 1 µF capacitor at
VCC = 5.0 V supply.
VDD
STB
1.8 V
TURN ON
VCC
300 Ω
Tx
LEVEL
SHIFTER
+
DI
–
1.4 V
Page 2 of 7
VSS
www.lansdale.com
Issue A