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PDF ICL3221EM Data sheet ( Hoja de datos )
| Número de pieza | ICL3221EM | |
| Descripción | RS-232 Transmitters/Receivers | |
| Fabricantes | Intersil Corporation | |
| Logotipo |  |
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±15kV ESD Protected, +3V, 1µA, 250kbps, RS-232
Transmitters/Receivers
ICL3221EM
Features
The Intersil ICL3221EM devices are 3.0V powered RS-232
transmitters/receivers which meet ElA/TIA-232 and
V.28/V.24 specifications. 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
automatic power-down functions, reduce the standby
supply current to a 1µA 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. The device is fully
compatible with 3.3V-only systems.
The ICL3221EM features an automatic power-down
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.
These devices power up again when a valid RS-232
voltage is applied to any receiver input.
Table 1 summarizes the features of the ICL3221EM.
Related Literature
• ESD Protection for RS-232 I/O Pins to ±15kV
(IEC61000)
• Drop in Replacement for MAX3221E
• RS-232 Compatible with VCC = 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
0.1µF Capacitors
• Manual and Automatic Power-down Features
• Receiver Hysteresis For Improved Noise Immunity
• Guaranteed Minimum Data Rate . . . . . . . . 250kbps
• Power Supply Range. . . . . . . Single +3.0V to +3.6V
• Low Supply Current in Power-down State . . . . . . 1µA
• Pb-Free (RoHS Compliant)
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
• Technical Brief TB363 “Guidelines for Handling and
Processing Moisture Sensitive Surface Mount Devices
(SMDs)”
www.DataSheet4U.com
TABLE 1. SUMMARY OF FEATURES
PART
NUMBER
NUMBER
OF Tx
NUMBER
OF Rx
DATA
RATE
(kbps)
RECEIVER
ENABLE
FUNCTION?
READY
OUTPUT?
MANUAL
POWER-DOWN?
AUTOMATIC
POWER-DOWN
FUNCTION?
ICL3221EM
1
1 250
Yes
No
Yes
Yes
Ordering Information
PART
NUMBER
PART
MARKING
TEMP RANGE
(°C)
PACKAGE
PKG.
DWG. #
ICL3221EMVZ* (Notes 1, 2, 3) 3221 EMVZ
-55 to +125
16 Ld TSSOP
M16.173
NOTES:
1. Add “-T” suffix for tape and reel. Please refer to TB347 for details on reel specifications.
2. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach
materials, and 100% matte tin plate plus anneal (e3 termination finish, which is RoHS compliant and 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-020.
3. For Moisture Sensitivity Level (MSL), please see device information page for ICL3221EM. For more information on MSL please
see techbrief TB363.
December 17, 2009
FN7552.0
1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2009. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
1 page  
ISL3221EM
Electrical Specifications
Test Conditions: VCC = 3.3V ±10%, C1 - C4 = 0.1µF; Unless Otherwise Specified.
Typicals are at TA = +25°C. Boldface limits apply over the operating temperature
range, -55°C to +125°C. (Continued)
PARAMETER
TEST CONDITIONS
TEMP MIN
(°C) (Note 6)
TYP
MAX
(Note 6) UNITS
Receiver Positive or Negative
Threshold to INVALID Low
Delay (tINVL)
RECEIVER INPUT
25 - 30 - µs
Input Voltage Range
25 -25
-
25 V
Input Threshold Low
Input Threshold High
Input Hysteresis
VCC = 3.3V
VCC = 3.3V
25 0.6
1.2
-
V
25 -
1.5 2.4 V
25 - 0.5 - V
Input Resistance
25 3 5 7 kΩ
TRANSMITTER OUTPUT
Output Voltage Swing
All Transmitter Outputs Loaded with 3kΩ to Ground Full
±5.0
±5.4
-
V
Output Resistance
VCC = V+ = V- = 0V, Transmitter Output = ±2V
Output Short-Circuit Current
Full
Full
300
-
10M
±35
-Ω
±60 mA
Output Leakage Current
VOUT = ±12V, VCC = 0V or 3V to 3.6V,
Full
Automatic Power-down or FORCEOFF = SHDN = GND
-
- ±25 µA
TIMING CHARACTERISTICS
Maximum Data Rate
Receiver Propagation Delay
Receiver Output Enable Time
RL = 3kΩ, CL = 1000pF, One Transmitter Switching
Receiver Input to
Receiver Output,
CL = 150pF
tPHL
tPLH
Normal Operation
Full
25
25
25
250
-
-
-
500
0.15
0.15
200
- kbps
- µs
- µs
- ns
Receiver Output Disable Time Normal Operation
25 - 200 - ns
Transmitter Skew
Receiver Skew
Transition Region Slew Rate
www.DataSheet4U.com
tPHL to tPLH (Note 5)
tPHL to tPLH
VCC = 3.3V,
RL = 3kΩ to 7kΩ,
Measured from 3V to
-3V or -3V to 3V
CL = 150pF to 2500pF
CL = 150pF to 1000pF
25
25
25
25
-
-
4
6
100
1000
ns
50
1000
ns
- 30 V/µs
- 30 V/µs
ESD PERFORMANCE
RS-232 Pins (TOUT, RIN)
Human Body Model
25 - ±15 - kV
IEC61000-4-2 Contact Discharge
25 - ±8 - kV
IEC61000-4-2 Air Gap Discharge
25 - ±15 - kV
All Other Pins
Human Body Model
25 - ±2 - kV
NOTES:
5. Transmitter skew is measured at the transmitter zero crossing points.
6. Parts are 100% tested at +25°C. Full temp limits are guaranteed by bench and tester characterization
5 FN7552.0
December 17, 2009
5 Page 
ISL3221EM
Typical Performance Curves VCC = 3.3V, TA = +25°C.
6 25
4
2
1 TRANSMITTER AT 250kbps
1 OR 2 TRANSMITTERS AT 30kbps
0
VOUT+
20
15
-2
10
-4 VOUT -
+SLEW
-SLEW
-6
0
1000
2000
3000
4000
5000
LOAD CAPACITANCE (pF)
FIGURE 12. TRANSMITTER OUTPUT VOLTAGE vs LOAD
CAPACITANCE
5
0
1000
2000
3000
4000
5000
LOAD CAPACITANCE (pF)
FIGURE 13. SLEW RATE vs LOAD CAPACITANCE
45
40
35
250kbps
30
25
20 120kbps
15
10 20kbps
5
0
0
1000
2000 3000
4000 5000
LOAD CAPACITANCE (pF)
FIGURE 14. SUPPLY CURRENT vs LOAD CAPACITANCE WHEN TRANSMITTING DATA
www.DataSheet4U.com
Die Characteristics
SUBSTRATE POTENTIAL (POWERED UP):
GND
TRANSISTOR COUNT:
ICL3221EM: 286
PROCESS:
Si Gate CMOS
11 FN7552.0
December 17, 2009
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet ICL3221EM.PDF ] | |
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