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Part Number ICL3245E

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1
®
FN4900.5
ICL3225E, ICL3227E, ICL3245E
±
15kV ESD Protected, +3V to +5.5V,
1Microamp, 1Mbps, RS-232 Transceivers
with Enhanced Automatic Powerdown
The Intersil ICL32XXE devices are 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,
they provide
±
15kV ESD protection (IEC61000-4-2 Air Gap
and Human Body Model) on transmitter outputs and receiver
inputs (RS-232 pins). Targeted applications are 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 manual and enhanced automatic powerdown
functions, reduce the standby supply current to a 1
µ
A trickle.
Small footprint packaging, and the use of small, low value
capacitors ensure board space savings as well. Data rates
greater than 1Mbps are guaranteed at worst case load
conditions. This family is fully compatible with 3.3V only
systems, mixed 3.3V and 5.0V systems, and 5.0V only
systems.
The ICL3245E is a 3 driver, 5 receiver device that provides a
complete serial port suitable for laptop or notebook
computers. It also includes a noninverting always-active
receiver for "wake-up" capability.
These devices, feature an enhanced automatic
powerdown function which powers down the on-chip power-
supply and driver circuits. This occurs when all receiver and
transmitter inputs detect no signal transitions for a period of
30s. These devices power back up, automatically, whenever
they sense a transition on any transmitter or receiver input.
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
ICL32XXE 3V family.
Features
· Pb-Free Available as an Option (see Ordering Info)
· ESD Protection for RS-232 I/O Pins to
±
15kV (IEC61000)
· Manual and Enhanced Automatic Powerdown Features
· Drop in Replacements for MAX3225E, MAX3227E,
MAX3245E
· RS-232 Compatible with V
CC
= 2.7V
· Meets EIA/TIA-232 and V.28/V.24 Specifications at 3V
· Latch-Up Free
· On-Chip Voltage Converters Require Only Four External
0.1
µ
F Capacitors
· Guaranteed Mouse Driveability (ICL3245E)
· "Ready to Transmit" Indicator Output
(ICL3225E/ICL3227E)
· Receiver Hysteresis For Improved Noise Immunity
· Guaranteed Minimum Data Rate . . . . . . . . . . . . . . 1Mbps
· Low Skew at Transmitter/Receiver Input Trip Points. . . 10ns
· Guaranteed Minimum Slew Rate . . . . . . . . . . . . . . 24V/
µ
s
· Wide Power Supply Range . . . . . . . Single +3V to +5.5V
· Low Supply Current in Powerdown State. . . . . . . . . . .1
µ
A
Applications
· Any System Requiring RS-232 Communication Ports
- Battery Powered, Hand-Held, and Portable Equipment
- Laptop Computers, Notebooks, Palmtops
- Modems, Printers and Other Peripherals
- Digital Cameras
- Cellular/Mobile Phones
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?
READY
OUTPUT?
MANUAL
POWER-
DOWN?
ENHANCED
AUTOMATIC
POWERDOWN
FUNCTION?
ICL3225E
2
2
0
1000
No
Yes
Yes
Yes
ICL3227E
1
1
0
1000
No
Yes
Yes
Yes
ICL3245E
3
5
1
1000
No
No
Yes
Yes
Data Sheet
June 2004
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. 2000, 2001, 2003, 2004. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
2
Ordering Information
(NOTE 1)
PART NO.
TEMP.
RANGE (°C)
PACKAGE
PKG. DWG. #
ICL3225ECA
0 to 70
20 Ld SSOP
M20.209
ICL3225CAZ
(See Note 2)
0 to 70
20 Ld SSOP
(Pb-Free)
M20.209
ICL3225EIA
-40 to 85
20 Ld SSOP
M20.209
ICL3225ECP
0 to 70
20 Ld PDIP
E20.3
ICL3227ECA
0 to 70
16 Ld SSOP
M16.209
ICL3227EIA
-40 to 85
16 Ld SSOP
M16.209
ICL3245ECA
0 to 70
28 Ld SSOP
M28.209
ICL3245ECAZ
(See Note 2)
0 to 70
28 Ld SSOP
(Pb-Free)
M28.209
ICL3245EIA
-40 to 85
28 Ld SSOP
M28.209
ICL3245ECB
0 to 70
28 Ld SOIC
M28.3
ICL3245EIB
-40 to 85
28 Ld SOIC
M28.3
NOTES:
1. Most surface mount devices are available on tape and reel; add
"-T" to suffix.
2.
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.
Ordering Information
(Continued)
(NOTE 1)
PART NO.
TEMP.
RANGE (°C)
PACKAGE
PKG. DWG. #
Pinouts
ICL3225E (PDIP, SSOP)
TOP VIEW
ICL3227E (SSOP)
TOP VIEW
ICL3245E (SOIC, SSOP)
TOP VIEW
READY
C1+
V+
C1-
C2+
C2-
V-
T2
OUT
R2
IN
FORCEOFF
GND
T1
OUT
R1
IN
R1
OUT
T1
IN
INVALID
V
CC
FORCEON
T2
IN
20
19
18
17
16
15
14
13
12
11
1
2
3
4
5
6
7
8
9
10
R2
OUT
READY
C1+
V+
C1-
C2+
C2-
V-
R1
IN
FORCEOFF
GND
T1
OUT
FORCEON
T1
IN
R1
OUT
V
CC
INVALID
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
C2+
C2-
V-
R1
IN
R2
IN
R3
IN
R4
IN
R5
IN
T1
OUT
T3
OUT
T3
IN
T2
IN
T1
IN
C1+
V
CC
GND
C1-
FORCEON
INVALID
R1
OUT
R2
OUT
R3
OUT
R4
OUT
R5
OUT
V+
FORCEOFF
R2
OUTB
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
T2
OUT
ICL3225E, ICL3227E, ICL3245E
3
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.
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 outputs.
INVALID
Active low output that indicates if no valid RS-232 levels are present on any receiver input.
READY
Active high output that indicates when the ICL32XXE is ready to transmit (i.e., V-
-4V).
FORCEOFF Active low to shut down transmitters and on-chip power supply. This overrides any automatic circuitry and FORCEON (see Table 2).
FORCEON Active high input to override automatic powerdown circuitry thereby keeping transmitters active. (FORCEOFF must be high).
Typical Operating Circuits
ICL3225E
19
V
CC
T1
OUT
T2
OUT
T1
IN
T2
IN
T
1
T
2
0.1
µ
F
+0.1
µ
F
+
0.1
µ
F
13
12
17
8
2
4
3
7
V+
V-
C1+
C1-
C2+
C2-
+
0.1
µ
F
5
6
R1
OUT
R1
IN
16
5k
R2
OUT
R2
IN
9
10
5k
15
C
1
C
2
+ C
3
C
4
READY
1
GND
+3.3V
+
0.1
µ
F
18
TTL/CMOS
LOGIC LEVELS
RS-232
LEVELS
R
1
R
2
FORCEON
FORCEOFF
14
20
V
CC
11
INVALID
TO POWER
CONTROL LOGIC
ICL3225E, ICL3227E, ICL3245E
4
ICL3227E
ICL3245E
Typical Operating Circuits
(Continued)
15
V
CC
T1
OUT
T1
IN
T
1
0.1
µ
F
+0.1
µ
F
+
0.1
µ
F
11
13
2
4
3
7
V+
V-
C1+
C1-
C2+
C2-
+
0.1
µ
F
5
6
R1
OUT
R1
IN
R
1
8
9
5k
C
1
C
2
+ C
3
C
4
READY
1
GND
+3.3V
+
0.1
µ
F
14
TTL/CMOS
LOGIC LEVELS
RS-232
LEVELS
FORCEON
FORCEOFF
12
16
V
CC
10
INVALID
TO POWER
CONTROL LOGIC
26
V
CC
T1
OUT
T2
OUT
T3
OUT
T1
IN
T2
IN
T3
IN
T
1
T
2
T
3
0.1
µ
F
+
0.1
µ
F
+
0.1
µ
F
14
13
9
10
12
11
28
24
27
3
V+
V-
C1+
C1-
C2+
C2-
+
0.1
µ
F
1
2
R1
OUT
R1
IN
4
5k
R2
OUT
R2
IN
5
18
5k
R3
OUT
R3
IN
6
17
5k
R4
OUT
R4
IN
7
16
5k
R5
OUT
R5
IN
R
5
8
15
5k
19
R2
OUTB
C
1
C
2
+ C
3
C
4
FORCEON
FORCEOFF
23
GND
22
+3.3V
+
0.1
µ
F
20
25
V
CC
TTL/CMOS
LOGIC LEVELS
RS-232
LEVELS
RS-232
LEVELS
R
1
R
2
R
3
R
4
21
INVALID
TO POWER
CONTROL LOGIC
ICL3225E, ICL3227E, ICL3245E
5
Absolute Maximum Ratings
Thermal Information
V
CC
to
Ground. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 6V
V+ to Ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to 7V
V- to Ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +0.3V to -7V
V+ to V- . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14V
Input Voltages
T
IN
, FORCEOFF, FORCEON . . . . . . . . . . . . . . . . . . -0.3V to 6V
R
IN
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
±
25V
Output Voltages
T
OUT
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
±
13.2V
R
OUT
, INVALID, READY . . . . . . . . . . . . . . . . -0.3V to V
CC
+0.3V
Short Circuit Duration
T
OUT
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Continuous
ESD Rating . . . . . . . . . . . . . . . . . . . . . . . . . See Specification Table
Thermal Resistance (Typical, Note 3)
JA
(°C/W)
20 Ld PDIP Package . . . . . . . . . . . . . . . . . . . . . . . .
80
28 Ld SOIC Package . . . . . . . . . . . . . . . . . . . . . . . .
75
16 Ld SSOP Package . . . . . . . . . . . . . . . . . . . . . . .
145
20 Ld SSOP Package . . . . . . . . . . . . . . . . . . . . . . .
135
28 Ld SSOP Packages . . . . . . . . . . . . . . . . . . . . . .
100
Maximum Junction Temperature (Plastic Package) . . . . . . . 150°C
Maximum Storage Temperature Range . . . . . . . . . . -65°C to 150°C
Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . 300°C
(SOIC, SSOP - Lead Tips Only)
Operating Conditions
Temperature Range
ICL32XXEC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C
ICL32XXEI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40°C to 85°C
CAUTION: Stresses above those listed in "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
NOTE:
3.
JA
is measured with the component mounted on a low effective thermal conductivity test board in free air. See Tech Brief TB379 for details.
Electrical Specifications
Test Conditions: V
CC
= 3V to 5.5V, C
1
- C
4
= 0.1
µ
F; Unless Otherwise Specified.
Typicals are at T
A
= 25°C
PARAMETER
TEST CONDITIONS
TEMP
(°C)
MIN
TYP
MAX
UNITS
DC CHARACTERISTICS
Supply Current, Automatic
Powerdown
All R
IN
Open, FORCEON = GND, FORCEOFF = V
CC
25
-
1.0
10
µ
A
Supply Current, Powerdown
FORCEOFF = GND
25
-
1.0
10
µ
A
Supply Current,
Automatic Powerdown Disabled
All Outputs Unloaded, FORCEON = FORCEOFF = V
CC
25
-
0.3
1.0
mA
LOGIC AND TRANSMITTER INPUTS AND RECEIVER OUTPUTS
Input Logic Threshold Low
T
IN
, FORCEON, FORCEOFF
Full
-
-
0.8
V
Input Logic Threshold High
T
IN
, FORCEON,
FORCEOFF
V
CC
= 3.3V
Full
2.0
-
-
V
V
CC
= 5.0V
Full
2.4
-
-
V
Input Leakage Current
T
IN
, FORCEON, FORCEOFF
Full
-
±
0.01
±
1.0
µ
A
Output Leakage Current
FORCEOFF = GND, ICL3245E Only
Full
-
±
0.05
±
10
µ
A
Output Voltage Low
I
OUT
= 1.6mA
Full
-
-
0.4
V
Output Voltage High
I
OUT
= -1.0mA
Full
V
CC
-0.6 V
CC
-0.1
-
V
RECEIVER INPUTS
Input Voltage Range
Full
-25
-
25
V
Input Threshold Low
V
CC
= 3.3V
25
0.6
1.2
-
V
V
CC
= 5.0V
25
0.8
1.5
-
V
Input Threshold High
V
CC
= 3.3V
25
-
1.5
2.4
V
V
CC
= 5.0V
25
-
1.8
2.4
V
Input Hysteresis
25
-
0.5
-
V
Input Resistance
25
3
5
7
k
TRANSMITTER OUTPUTS
Output Voltage Swing
All Transmitter Outputs Loaded with 3k
to Ground
Full
±
5.0
±
5.4
-
V
Output Resistance
V
CC
= V+ = V- = 0V, Transmitter Output =
±
2V
Full
300
10M
-
Output Short-Circuit Current
Full
-
±
35
±
60
mA
ICL3225E, ICL3227E, ICL3245E