SP3244ECY-L Exar Corporation, SP3244ECY-L Datasheet - Page 11

• Manufacturer Part Number: SP3244ECY-L
• Description: IC TXRX RS232 28TSSOP
• Manufacturer: Exar Corporation
• Type: Transceiverr

Specifications of SP3244ECY-L

• Package / Case: 28-TSSOP (0.173", 4.40mm Width)
• Number Of Drivers/receivers: 3/5
• Protocol: RS232
• Voltage - Supply: 3 V ~ 5.5 V
• Mounting Type: Surface Mount
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Function: Transceiver
• Mounting Style: SMD/SMT
• Supply Current: 1 uA
• Supply Voltage (max): + 6 V
• Supply Voltage (min): - 0.3 V
• Logic Type: RS-232 Transceivers
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 1016-1129

C
1
+
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com
+
-
V
CC
Phases 1 and 3: Store/Double.
Double charge from C1 onto C2.
C2 is now charged to -2xVcc
C
2
e
e
-
-
+
V+
V-
+
+
C
C
3
4
Charge Pump Phases

Patented 5,306,954 (Sipex, inc.)
C
C
1
1
e
-
e
-
+
+
+
+
-
-
V
V
CC
CC
Meanwhile C1 is charged to Vcc
Phase 2 – Vss transfer from C2 to C4.
Meanwhile C1 is charged to Vcc
Phase 4 V
C
C
SP3244E_SP3245E_00_2509
2
2
DESCRIPTION
e
DD
V
+
+
+
Vss
DD
e
transfer from C2 to C3.
-
e
+
V+
V-
V+
e
-
+
+
+
+
C
C
C
C
3
4
3
4