ISL4241E Intersil Corporation, ISL4241E Datasheet - Page 2

• Manufacturer Part Number: ISL4241E
• Description: QFN Packaged, +/-15kV Esd Protected, +2.7V to +5.5V, 10Nanoamp, 250kbps, RS-232 Transmitters/receivers
• 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).
T1
T2
T3
FORCEON
INVALID
R1
R2
R3
R4
R5
R
OUT
OUT
OUT
SHDN
R
T
GND
V
C1+
C2+
PIN
OUTB
C1-
C2-
T
R
EN
NC
IN
IN
IN
IN
IN
V+
OUT
OUT
V-
CC
IN
IN
1
2
3
4
5
6
7
8
32
System power supply input (2.7V 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 input to override automatic powerdown circuitry thereby keeping transmitters active. (FORCEOFF must be high).
Active low receiver enable control.
Active low input to shut down transmitters and on-board power supply, to place device in low power mode.
No Connection
9
31
10
30
11
ISL4241E (QFN)
TOP VIEW
29
12
2
28
13
,
,
RS-232 level (nominally ±5.5V) transmitter outputs.
RS-232 compatible receiver inputs.
27
14
26
15
25
16
24
23
22
21
20
19
18
17
ISL4241E, ISL4243E
GND
C1-
EN
SHDN
R1
R2
R1
R2
OUTB
OUTB
OUT
OUT
FUNCTION
T1
T2
T3
R1
R2
R3
R4
R5
OUT
OUT
OUT
IN
IN
IN
IN
IN
1
2
3
4
5
6
7
8
32
9
31
10
30
11
ISL4243E (QFN)
12
TOP VIEW
29
28
13
14
27
26
15
25
16
24
23
22
21
20
19
18
17
GND
C1-
FORCEON
FORCEOFF
INVALID
R2
R1
R2
OUTB
OUT
OUT