ChipFind - документация

Электронный компонент: ICL3226IA

Скачать:  PDF   ZIP
1
ICL3224, ICL3226, ICL3238, ICL3244
1 Microamp, +3V to +5.5V, 250kbps,
RS-232 Transceivers with Enhanced
Automatic Powerdown
The Intersil ICL32XX 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. 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
A 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 5.0V
systems, and 5.0V only systems.
The ICL3244 is a 3 driver, 5 receiver device that provides a
complete serial port suitable for laptop or notebook
computers. The ICL3244/38 also include a noninverting
always-active receiver for RING INDICATOR monitoring.
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
30sec. These devices power back up, automatically,
whenever they sense a transition on any transmitter or
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
ICL32XX 3V family.
Features
15kV ESD Protected (Human Body Model)
Manual and Enhanced Automatic Powerdown Features
Drop in Replacements for MAX3224, MAX3226,
MAX3238, MAX3244
Meets EIA/TIA-232 and V.28/V.24 Specifications at 3V
Latch-Up Free
RS-232 Compatible with V
CC
= 2.7V
On-Chip Voltage Converters Require Only Four External
0.1
F Capacitors
Flow-Through Pinout (ICL3238)
Guaranteed Mouse Driveability (ICL3244)
"Ready to Transmit" Indicator Output (ICL3224/26)
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
Low Supply Current in Powerdown State. . . . . . . . . . .1
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
- Data Cradles
Related Literature
Technical Brief TB363 "Guidelines for Handling and
Processing Moisture Sensitive Surface Mount Devices
(SMDs)"
AN9863, "3V to +5.5V, 250k-1Mbps, RS-232
Transmitters/Receivers"
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
ICL3224
2
2
0
250
NO
YES
YES
YES
ICL3226
1
1
0
250
NO
YES
YES
YES
ICL3238
5
3
1
250
NO
NO
YES
YES
ICL3244
3
5
1
250
NO
NO
YES
YES
Data Sheet
November 2002
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. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
FN4876.6
2
Ordering Information
(NOTE 1)
PART NO.
TEMP.
RANGE (
o
C)
PACKAGE
PKG. NO.
ICL3224CA
0 to 70
20 Ld SSOP
M20.209
ICL3224IA
-40 to 85
20 Ld SSOP
M20.209
ICL3224CP
0 to 70
20 Ld PDIP
E20.3
ICL3226CA
0 to 70
16 Ld SSOP
M16.209
ICL3226IA
-40 to 85
16 Ld SSOP
M16.209
ICL3238CA
0 to 70
28 Ld SSOP
M28.209
ICL3238IA
-40 to 85
28 Ld SSOP
M28.209
ICL3244CA
0 to 70
28 Ld SSOP
M28.209
ICL3244IA
-40 to 85
28 Ld SSOP
M28.209
ICL3244CB
0 to 70
28 Ld SOIC
M28.3
ICL3244IB
-40 to 85
28 Ld SOIC
M28.3
ICL3244CV
0 to 70
28 Ld TSSOP
M28.173
ICL3244IV
-40 to 85
28 Ld TSSOP
M28.173
NOTE:
1. Most surface mount devices are available on tape and reel; add
"-T" to suffix.
Ordering Information
(Continued)
(NOTE 1)
PART NO.
TEMP.
RANGE (
o
C)
PACKAGE
PKG. NO.
Pinouts
ICL3224 (PDIP, SSOP)
TOP VIEW
ICL3226 (SSOP)
TOP VIEW
ICL3238 (SSOP)
TOP VIEW
ICL3244 (SOIC, SSOP, TSSOP)
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
C2+
GND
C2-
V-
T1
OUT
T2
OUT
T3
OUT
R1
IN
R2
IN
R3
IN
T5
OUT
FORCEON
FORCEOFF
C1+
V
CC
C1-
T1
IN
T2
IN
R1
OUT
T4
IN
R3
OUT
T5
IN
R1
OUTB
INVALID
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
ICL3224, ICL3226, ICL3238, ICL3244
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
RS-232 level (nominally
5.5V) transmitter outputs.
R
IN
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 ICL32XX 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
ICL3224
ICL3226
19
V
CC
T1
OUT
T2
OUT
T1
IN
T2
IN
T
1
T
2
0.1
F
+0.1
F
+
0.1
F
13
12
17
8
2
4
3
7
V+
V-
C1+
C1-
C2+
C2-
+
0.1
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
F
18
TTL/CMOS
LOGIC
RS-232
LEVELS
R
1
R
2
FORCEON
FORCEOFF
14
20
V
CC
11
INVALID
TO POWER
CONTROL
LEVELS
LOGIC
15
V
CC
T1
OUT
T1
IN
T
1
0.1
F
+0.1
F
+
0.1
F
11
13
2
4
3
7
V+
V-
C1+
C1-
C2+
C2-
+
0.1
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
F
14
TTL/CMOS
LOGIC
RS-232
LEVELS
FORCEON
FORCEOFF
12
16
V
CC
10
INVALID
TO POWER
CONTROL
LOGIC
LEVELS
ICL3224, ICL3226, ICL3238, ICL3244
4
ICL3238
NOTES:
2. THE NEGATIVE TERMINAL OF C
3
CAN BE CONNECTED TO EITHER
V
CC
OR GND.
3. FOR V
CC
= 3.15V (3.3V -5%), USE C
1
- C
4
= 0.1
F OR GREATER. FOR
V
CC
= 3.0V (3.3V -10%), USE C
1
- C
4
= 0.22
F.
ICL3244
Typical Operating Circuits
(Continued)
26
V
CC
T1
OUT
T2
OUT
T3
OUT
T1
IN
T2
IN
T3
IN
T
1
T
2
T
3
0.1
F
+
0.1
F
+
0.1
F
24
23
5
6
22
7
28
25
27
4
V+
V-
C1+
C1-
C2+
C2-
+
0.1
F
1
3
R1
OUT
R1
IN
8
5k
R2
OUT
R2
IN
9
20
5k
R3
OUT
R3
IN
11
18
5k
21
R1
OUTB
C
1
C
2
+ C
3
C
4
FORCEON
FORCEOFF
13
GND
14
+3.3V
+
0.1
F
16
2
V
CC
TTL/CMOS
LOGIC
RS-232
LEVELS
RS-232
LEVELS
R
1
R
2
R
3
15
INVALID
TO POWER
CONTROL
+
C
3
(OPTIONAL
T4
OUT
T5
OUT
T4
IN
T5
IN
T
3
T
4
19
10
17
12
LEVELS
LOGIC
CONNECTION, NOTE 2)
NOTE 3
NOTE 3
26
V
CC
T1
OUT
T2
OUT
T3
OUT
T1
IN
T2
IN
T3
IN
T
1
T
2
T
3
0.1
F
+
0.1
F
+
0.1
F
14
13
9
10
12
11
28
24
27
3
V+
V-
C1+
C1-
C2+
C2-
+
0.1
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
F
20
25
V
CC
TTL/CMOS
LOGIC
RS-232
LEVELS
RS-232
LEVELS
R
1
R
2
R
3
R
4
21
INVALID
TO POWER
CONTROL LOGIC
LEVELS
ICL3224, ICL3226, ICL3238, ICL3244
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
Operating Conditions
Temperature Range
ICL32XXC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0
o
C to 70
o
C
ICL32XXI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40
o
C to 85
o
C
Thermal Resistance (Typical, Note 4)
JA
(
o
C/W)
20 Ld PDIP Package . . . . . . . . . . . . . . . . . . . . . . . .
80
28 Ld SOIC Package . . . . . . . . . . . . . . . . . . . . . . . .
75
16 Ld SSOP Package . . . . . . . . . . . . . . . . . . . . . . .
140
20 Ld SSOP Package . . . . . . . . . . . . . . . . . . . . . . .
125
28 Ld SSOP and TSSOP Packages . . . . . . . . . . . .
100
Moisture Sensitivity (see Technical Brief TB363)
All Packages Not Listed Below . . . . . . . . . . . . . . . . . . . . . Level 1
16 Ld SSOP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . Level 2
Maximum Junction Temperature (Plastic Package) . . . . . . . 150
o
C
Maximum Storage Temperature Range . . . . . . . . . -65
o
C to 150
o
C
Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . 300
o
C
(SOIC, SSOP, TSSOP - Lead Tips Only)
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:
4.
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
F (ICL3238: C
1
- C
4
= 0.22
F @ V
CC
= 3V); Unless
Otherwise Specified. Typicals are at T
A
= 25
o
C
PARAMETER
TEST CONDITIONS
TEMP
(
o
C)
MIN
TYP
MAX
UNITS
DC CHARACTERISTICS
Supply Current, Automatic
Powerdown
All R
IN
Open, FORCEON = GND, FORCEOFF = V
CC
25
-
1.0
10
A
Supply Current, Powerdown
FORCEOFF = GND
25
-
1.0
10
A
Supply Current,
Automatic Powerdown Disabled
All Outputs Unloaded, FORCEON
= FORCEOFF = V
CC
ICL3244, V
CC
= 3V
25
-
0.3
1.0
mA
All Others, V
CC
= 3.15V
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
Transmitter Input Hysteresis
25
-
0.5
-
V
Input Leakage Current
T
IN
, FORCEON, FORCEOFF
Full
-
0.01
1.0
A
Output Leakage Current
FORCEOFF = GND
Full
-
0.05
10
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
ICL3224, ICL3226, ICL3238, ICL3244