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ICL3237ECAZ

P1-P3P4-P6P7-P9P10-P12
1
®
FN6014.2
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143
| Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright © Intersil Americas Inc. 2002-2004. All Rights Reserved All other trademarks mentioned are the property of their respective owners.
ICL3237E
±15kV ESD Protected, 10nA Supply-
Current, +3V to +5.5V, 250k/1Mbps,
RS-232 Transmitters/Receivers
The Intersil ICL3237E contains 3.0V to 5.5V powered
RS-232 transmitters/receivers which meet ElA/TIA-232 and
V.28/V.24 specifications, even at V
CC
= 3.0V. Additionally, it
provides
±15kV ESD protection (IEC61000-4-2 Air Gap and
Human Body Model) on transmitter outputs and receiver
inputs (RS-232 pins). Targeted applications are cell phones,
PDAs, Palmtops, and notebook and laptop computers where
the low operational, and even lower standby, power
consumption is critical. Efficient on-chip charge pumps,
coupled with the manual powerdown function, reduce the
standby supply current to a 10nA trickle. Small footprint
packaging, and the use of small, low value capacitors ensure
board space savings as well. Data rates greater than 1Mbps
(MBAUD = V
CC
) are guaranteed at worst case load
conditions. The ICL3237E is fully compatible with 3.3V only
systems, mixed 3.3V and 5.0V systems, and 5.0V only
systems.
The ICL3237E is a 5 driver, 3 receiver device that also
includes a noninverting always-active receiver for “wake-up”
capability.
Table 1 summarizes the features of the device represented
by this data sheet, while Application Note AN9863
summarizes the features of each device comprising the
ICL32XX 3V family.
Features
• ESD Protection For RS-232 I/O Pins to ±15kV (IEC61000)
• Pin Compatible Replacement for MAX3237E
• Pin Selectable, Guaranteed Data Rate . . 250kbps/1Mbps
• Meets EIA/TIA-232 and V.28/V.24 Specifications at 3V
• RS-232 Compatible with V
CC
= 2.7V
• Latch-Up Free
• On-Chip Voltage Converters Require Only Four External
Capacitors
• Manual Powerdown Feature
• Flow Through Pinout
• Rx and Tx Hysteresis For Improved Noise Immunity
• Rx Active in Powerdown; Separate Rx Enable Pin
• Guaranteed Minimum Slew Rate . . . . . . . 6V/µs or 24V/µs
• Wide Power Supply Range. . . . . . . . Single +3V to +5.5V
• Low Supply Current in Powerdown State. . . . . . . . . .10nA
• Pb-free available
Applications
• Any System Requiring RS-232 Communication Ports
- Battery Powered, Hand-Held, and Portable Equipment
- Laptop Computers, Notebooks, Palmtops
- Modems, Printers and other Peripherals
- Data Cradles and Cables
- Cellular/Mobile Phone
TABLE 1. SUMMARY OF FEATURES
PART
NUMBER
NO. OF
Tx.
NO. OF
Rx.
NO. OF
MONITOR Rx.
(R
OUTB
)
(NOTE 1)
DATA
RATE
(kbps)
Rx. ENABLE
FUNCTION?
READY
OUTPUT?
MANUAL
POWER-
DOWN?
AUTOMATIC
POWERDOWN
FUNCTION?
ICL3237E 5 3 1 250/1000 YES NO YES NO
NOTE:
1. Data rate is selectable via the MBAUD pin.
Data Sheet July 2004
2
Pinout
ICL3237E (SSOP)
TOP VIEW
C2+
GND
C2-
V-
T1
OUT
T2
OUT
T3
OUT
R1
IN
R2
IN
R3
IN
T5
OUT
EN
SHDN
C1+
V
CC
C1-
T1
IN
T2
IN
R1
OUT
T4
IN
R3
OUT
T5
IN
R1
OUTB
MBAUD
V+
T3
IN
R2
OUT
28
27
26
25
24
23
22
21
20
19
18
17
16
15
1
2
3
4
5
6
7
8
9
10
11
12
13
14
T4
OUT
Ordering Information
PART NUMBER
TEMP.
RANGE (
o
C) PACKAGE
PKG. DWG.
#
ICL3237ECA 0 to 70 28 Ld SSOP M28.209
ICL3237ECAZ
(See Note)
0 to 70 28 Ld SSOP
(Pb-free)
M28.209
ICL3237EIA -40 to 85 28 Ld SSOP M28.209
ICL3237EIAZ
(See Note)
-40 to 85 28 Ld SSOP
(Pb-free)
M28.209
*Add “-T” suffix to part number for tape and reel packaging.
NOTE: Intersil Pb-free products employ special Pb-free material
sets; molding compounds/die attach materials and 100% matte tin
plate termination finish, which is compatible with both SnPb and
Pb-free soldering operations. Intersil Pb-free products are MSL
classified at Pb-free peak reflow temperatures that meet or exceed
the Pb-free requirements of IPC/JEDEC J Std-020B.
Pin Descriptions
PIN FUNCTION
V
CC
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.
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.
T
IN
TTL/CMOS compatible transmitter Inputs (Note 2).
T
OUT
±15kV ESD Protected, RS-232 level (nominally ±5.5V) transmitter outputs.
R
IN
±15kV ESD Protected, RS-232 compatible receiver inputs.
R
OUT
TTL/CMOS level receiver outputs.
R
OUTB
TTL/CMOS level, noninverting, always enabled receiver output.
EN
Active low receiver enable control; doesn’t disable R
OUTB
output (Note 2).
SHDN
Active low input to shut down transmitters and on-board power supply, to place device in low power mode (Note 2).
MBAUD Input low selects 250kbps data rate, and input high selects 1Mbps data rate (Note 2).
NOTE:
2. These input pins incorporate positive feedback resistors. Once the input is driven to a valid logic level, the feedback resistor maintains that logic
level until V
CC
is removed.
ICL3237E
3
Typical Operating Circuit
ICL3237E
NOTES:
3. THE NEGATIVE TERMINAL OF C
3
CAN BE CONNECTED TO EITHER V
CC
OR GND.
4. FOR V
CC
= 3.15V (3.3V -5%), USE C
1
- C
4
= 0.1µF OR GREATER. FOR V
CC
= 3.0V (3.3V -10%), USE C
1
- C
4
= 0.22µF.
26
V
CC
T1
OUT
T2
OUT
T3
OUT
T1
IN
T2
IN
T3
IN
T
1
T
2
T
3
0.1µF
+
0.1µF
+
0.1µF
24
23
5
6
22 7
28
25
27
4
V+
V-
C1+
C1-
C2+
C2-
+
0.1µF
1
3
R1
OUT
R1
IN
8
5kΩ
R2
OUT
R2
IN
920
5kΩ
R3
OUT
R3
IN
1118
5kΩ
21
R1
OUTB
C
1
C
2
+
C
3
C
4
EN
SHDN
13
GND
14
+3.3V
+
0.1µF
16
2
V
CC
TTL/CMOS
LOGIC LEVELS
RS-232
LEVELS
RS-232
LEVELS
R
1
R
2
R
3
15
MBAUD
TO CONTROL LOGIC
+
C
3
(OPTIONAL CONNECTION, NOTE 3)
T4
OUT
T5
OUT
T4
IN
T5
IN
T
4
T
5
19 10
17 12
NOTE 4
NOTE 4
ICL3237E
P1-P3P4-P6P7-P9P10-P12

ICL3237ECAZ

Mfr. #:
Buy ICL3237ECAZ
Manufacturer:
Renesas / Intersil
Description:
RS-232 Interface IC RS232 3V 5D/3R 15KV SHTDWN COM
Lifecycle:
New from this manufacturer.
Delivery:
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