SP3232EHCY-L/TR Exar Corporation, SP3232EHCY-L/TR Datasheet - Page 10

• Manufacturer Part Number: SP3232EHCY-L/TR
• Description: 3.3V, 460Kbps RS-232 Transceivers
• Manufacturer: Exar Corporation
• Type: Transceiverr

Specifications of SP3232EHCY-L/TR

• Number Of Drivers/receivers: 2/2
• Protocol: RS232
• Voltage - Supply: 3 V ~ 5.5 V
• Mounting Type: Surface Mount
• Package / Case: 16-TSSOP (0.173", 4.40mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Figure 11. Charge Pump Waveforms
Since both V
erated from V
and V
pump approaches that generate V
V
of V
inefficiencies in the design.
The clock rate for the charge pump typi-
cally operates at greater than 250kHz. The
external capacitors can be as low as 0.1µF
with a 16V breakdown voltage rating.
Figure 10. Charge Pump — Phase 2
Figure 9. Charge Pump — Phase 1
+
will show a decrease in the magnitude
–
–
compared to V
will be symmetrical. Older charge
+
CC
and V
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com
, in a no–load condition V
GND
GND
a) C
b) C
–
+
+6V
are separately gen-
1
-6V
2
due to the inherent
2+
2
-
C
1
Ch1 2.00V
+
–
C
V
1
CC
–5V
+
–
V
= +5V
CC
= +5V
[
Ch2
–
C
from
2
C
-5.5V
+
–
2
2.00V M 1.00ms Ch1 5.48V
+5V
–5V
+
–
+
T
T
T
10
+
–
+
–
C
C
C
C
4
4
3
+
3
+
–
–
]
V
V
V
V
DD
SS
DD
SS
Storage Capacitor
Storage Capacitor
Storage Capacitor
Storage Capacito r
SP3232EH_100_010611
DESCRIPTION