ICL3221E INTERSIL [Intersil Corporation], ICL3221E Datasheet - Page 5

• Manufacturer Part Number: ICL3221E
• Manufacturer: INTERSIL [Intersil Corporation]

Pinouts
Pin Descriptions
FORCEOFF Active low to shut down transmitters and on-chip power supply. This overrides any automatic circuitry and FORCEON (see Table 2).
FORCEON
INVALID
ROUTB
TOUT
ROUT
SHDN
VCC
GND
C1+
C2+
PIN
RIN
C1-
C2-
TIN
EN
V+
V-
(Continued)
T1OUT
T2OUT
T3OUT
System power supply input (3.0V to 5.5V).
Internally generated positive transmitter supply (+5.5V).
Internally generated negative transmitter supply (-5.5V).
Ground connection.
External capacitor (voltage doubler) is connected to this lead.
External capacitor (voltage doubler) is connected to this lead.
External capacitor (voltage inverter) is connected to this lead.
External capacitor (voltage inverter) is connected to this lead.
TTL/CMOS compatible transmitter Inputs.
±15kV ESD Protected
±15kV ESD Protected
TTL/CMOS level receiver outputs.
TTL/CMOS level, noninverting, always enabled receiver outputs.
Active low output that indicates if no valid RS-232 levels are present on any receiver input.
Active low receiver enable control; doesn’t disable R
Active low input to shut down transmitters and on-board power supply, to place device in low power mode.
Active high input to override automatic powerdown circuitry thereby keeping transmitters active. (FORCEOFF must be high).
R1IN
R2IN
R3IN
R4IN
R5IN
T3IN
T2IN
T1IN
C2+
C2-
(28 LD SOIC, SSOP, TSSOP)
V-
10
11
12
13
14
ICL3221E, ICL3222E, ICL3223E, ICL3232E, ICL3241E, ICL3243E
1
2
3
4
5
6
7
8
9
TOP VIEW
ICL3241E
5
,
,
RS-232 level (nominally ±5.5V) transmitter outputs.
RS-232 compatible receiver inputs.
28
27
26
25
24
23
22
21
20
19
18
17
16
15
C1+
V+
VCC
GND
C1-
EN
SHDN
R1OUTB
R2OUTB
R1OUT
R2OUT
R3OUT
R4OUT
R5OUT
OUTB
outputs.
FUNCTION
T1OUT
T2OUT
T3OUT
R1IN
R2IN
R3IN
R4IN
R5IN
T3IN
T2IN
T1IN
C2+
C2-
(28 LD SOIC, SSOP, TSSOP)
V-
10
11
12
13
14
1
2
3
4
5
6
7
8
9
TOP VIEW
ICL3243E
28
27
26
25
24
23
22
21
20
19
18
17
16
15
C1+
V+
VCC
GND
C1-
FORCEON
FORCEOFF
INVALID
R2OUTB
R1OUT
R2OUT
R3OUT
R4OUT
R5OUT
June 22, 2007
FN4910.19