1
FN4914.6
ICL3207E, ICL3217E
+/- 15kV ESD Protected, +3V to +5.5V, Low
Power, 250kbps, RS-232
Transmitters/Receivers
The Intersil ICL32X7E devices are 3V to 5.5V powered
RS-232 transmitters (five)/receivers (three) which meet
ElA/TIA-232 and V.28/V.24 specifications, even at
V
CC
= 3.0V. Additionally, they provide 15kV ESD protection
(IEC61000-4-2 Air Gap) and
15kV Human Body Model
protection on transmitter outputs and receiver inputs
(RS-232 pins). Targeted applications are ISDN Terminal
Adaptors, PDAs, Palmtops, peripherals, and notebook and
laptop computers where the low operational, and even lower
standby, power consumption is critical. The ICL3217E’s
efficient on-chip charge pumps, coupled with an automatic
powerdown function, reduces the standby supply current to
a 1A trickle. Small footprint packaging, and the use of
small, low value capacitors ensure board space savings as
well. Data rates greater than 250kbps are guaranteed at
worst case load conditions. This family is fully compatible
with 3.3V-only systems, mixed 3.3V and 5V systems, and
5V-only systems, and is a lower power, pin-for-pin
replacement for ‘207E and ‘237E type devices.
The ICL3217E features an automatic powerdown function
which powers down the on-chip power-supply and driver
circuits. This occurs when an attached peripheral device is
shut off or the RS-232 cable is removed, conserving system
power automatically, without changes to the hardware or
operating system. The ICL3217E powers up again when a
valid RS-232 voltage is applied to any receiver input.
Table 1 summarizes the features of the devices represented
by this data sheet, while application Note AN9863
summarizes the features of each device comprising the
ICL32XXE 3V family.
Features
• Pb-Free Available as an Option (see Ordering Info)
• ESD Protection for RS-232 I/O Pins to
15kV (IEC61000)
• 5V Lower Power Replacement for MAX207E, HIN207E,
HIN237E
• Meets EIA/TIA-232 and V.28/V.24 Specifications at 3V
• Latch-Up Free
• On-Chip Voltage Converters Require Only Four External
0.1F Capacitors
• RS-232 Compatible with V
CC
= 2.7V
• Automatic Powerdown (I
CC
= 1A, ICL3217E Only)
• Receiver Hysteresis For Improved Noise Immunity
• Guaranteed Minimum Data Rate . . . . . . . . . . . . . 250kbps
• Guaranteed Minimum Slew Rate . . . . . . . . . . . . . . . 6V/s
• Wide Power Supply Range . . . . . . . Single +3V to +5.5V
Applications
• Battery Powered, Hand-Held, and Portable Equipment
• Laptop Computers, Notebooks, Palmtops
• Modems, Printers and other Peripherals
• ISDN Terminal Adaptors and Set Top Boxes
• Related Literature
- Technical Brief TB363, Guidelines for Handling and
Processing Moisture Sensitive Surface Mount
Devices (SMDs)
Pinout
ICL3207E, ICL3217E (SOIC, SSOP)
TOP VIEW
T3
OUT
T1
OUT
T2
OUT
R1
IN
R1
OUT
T2
IN
T1
IN
GND
V
CC
C1+
V+
C1-
T4
OUT
R2
OUT
T5
IN
T5
OUT
T4
IN
R3
OUT
V-
C2-
C2+
R2
IN
T3
IN
R3
IN
1
2
3
4
5
6
7
8
9
10
11
12
16
17
18
19
20
21
22
23
24
15
14
13
TABLE 1. SUMMARY OF FEATURES
PART NUMBER
NO. OF
TX
NO. OF
RX
NO. OF MONITOR
RX (R
OUTB
) DATA RATE
(kbps)
RX ENABLE
FUNCTION?
MANUAL
POWER- DOWN?
AUTOMATIC
POWERDOWN
FUNCTION?
ICL3207E 5 3 0 250 NO NO NO
ICL3217E (No longer
available or supported)
5 3 0 250 NO NO YES
Data Sheet August 21, 2015
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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