2
Pinout
ISL4260E
(32 LD QFN)
TOP VIEW
NC
C2+
C2-
V-
T1IN
T2IN
NC
T1OUT
T2OUT
T3OUT
NC
R1IN
R2IN
NC
T3
IN
NC
R2
OU
T
R1
OU
T
V
L
NC
C1-
V+
C1+
SH
D
N
V
CC
NC
GND
NC
7
11
12
13
14
15
9
10
6
1
2
3
4
5
8
16
18
19
24
23
22
21
20
17
27
28
29
30
31
25
26
32
NC
PD
Pin Descriptions
PIN
FUNCTION
VCC
System power supply input (3.0V to 5.5V).
V+
Internally generated positive transmitter supply (+5.5V).
V-
Internally generated negative transmitter supply (-5.5V).
GND
Ground connection. This is also the potential of the thermal pad (PD).
C1+
External capacitor (voltage doubler) is connected to this lead.
C1-
External capacitor (voltage doubler) is connected to this lead.
C2+
External capacitor (voltage inverter) is connected to this lead.
C2-
External capacitor (voltage inverter) is connected to this lead.
TIN
TTL/CMOS compatible transmitter Inputs. The switching point is a function of the VL voltage.
TOUT
±15kV ESD Protected
, RS-232 level (nominally ±5.5V) transmitter outputs.
RIN
±15kV ESD Protected
, RS-232 compatible receiver inputs.
ROUT
TTL/CMOS level receiver outputs. Swings between GND and VL.
VL
Logic-Level Supply. All TTL/CMOS inputs and outputs are powered by this supply.
SHDN
Active low TTL/CMOS input to tri-state receiver and transmitter outputs and to shut down the on-board power supply to place device
in low power mode. The switching point is a function of the VL voltage.
NC
No Connection
PD
Exposed Thermal Pad. Connect to GND.
ISL4260E