ICL3244E Intersil Corporation, ICL3244E Datasheet - Page 3

• Manufacturer Part Number: ICL3244E
• Description: (ICL3224E - ICL3244E) RS-232 Transceivers
• Manufacturer: 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
READY
R
R
T
GND
V
C1+
C2+
OUTB
PIN
C1-
C2-
R
T
V+
OUT
OUT
V-
CC
IN
IN
(Continued)
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 high output that indicates when the ICL32XXE is ready to transmit (i.e., V- ≤ -4V)
Active high input to override automatic powerdown circuitry thereby keeping transmitters active. (FORCEOFF must be high).
3
,
,
RS-232 level (nominally ±5.5V) transmitter outputs.
RS-232 compatible receiver inputs.
ICL3224E, ICL3226E, ICL3244E
T1
T3
T2
R1
R2
R3
R4
R5
T3
T2
T1
C2+
OUT
OUT
OUT
C2-
V-
IN
IN
IN
IN
IN
IN
IN
IN
ICL3244E (SOIC, SSOP)
10
11
12
13
14
1
2
3
4
5
6
7
8
9
TOP VIEW
FUNCTION
28
27
26
25
24
23
22
21
20
19
18
17
16
15
C1+
V+
V
GND
C1-
FORCEON
FORCEOFF
INVALID
R2
R1
R2
R3
R4
R5
CC
OUTB
OUT
OUT
OUT
OUT
OUT