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ISL83387E_05 Datasheet, PDF (1/13 Pages) Intersil Corporation – +/-15kV ESD Protected, +3V to +5.5V, 1Microamp, 250kbps, RS-232 Transceivers with Enhanced Automatic Powerdown and a Separate Logic Supply
®
Data Sheet
July 8, 2005
ISL83387E
FN6040.1
+/-15kV ESD Protected, +3V to +5.5V,
1Microamp, 250kbps, RS-232
Transceivers with Enhanced Automatic
Powerdown and a Separate Logic Supply
The Intersil ISL83387E is a 3.0V to 5.5V powered RS-232
transceiver which meets ElA/TIA-232 and V.28/V.24
specifications, even at VCC = 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 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 1µA trickle. TSSOP 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 ISL83387E features a VL pin that adjusts the logic pin
output levels and input thresholds to values compatible with
the VCC powering the external logic (e.g., a UART).
This device includes 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 30 seconds.
It power back up, automatically, whenever it senses a
transition on any transmitter or receiver input.
Table 1 summarizes the features of the ISL83387E, while
Application Note AN9863 summarizes the features of each
device comprising the 3V RS-232 family.
Ordering Information
PART NO.
(BRAND)
TEMP.
RANGE (°C) PACKAGE
PKG.
DWG. #.
ISL83387EIV
(83387EIV)
-40 to 85 24 Ld TSSOP M24.173
ISL83387EIV-T
(83387EIV)
-40 to 85 Tape and Reel M24.173
ISL83387EIVZ (Note)
(83387EIVZ)
-40 to 85 24 Ld TSSOP M24.173
(Pb-free)
ISL83387EIVZ-T (Note) -40 to 85 Tape and Reel M24.173
(83387EIVZ)
(Pb-free)
NOTE: Intersil Pb-free plus anneal products employ special Pb-free
material sets; molding compounds/die attach materials and 100%
matte tin plate termination finish, which are 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.
Features
• VL Supply Pin for Compatibility with Mixed Voltage
Systems
• ESD Protection for RS-232 I/O Pins to ±15kV (IEC61000)
• Low Power, Pin Compatible Upgrade for MAX3387E
• Manual and Enhanced Automatic Powerdown Features
• Meets EIA/TIA-232 and V.28/V.24 Specifications at 3V
• On-Chip Charge Pumps Require Only Four External
0.1µF Capacitors
• Receivers Stay Active in Powerdown
• Very Low Supply Current . . . . . . . . . . . . . . . . . . . . 300µA
• Guaranteed Minimum Data Rate . . . . . . . . . . . . . 250kbps
• Wide Power Supply Range . . . . . . . Single +3V to +5.5V
• Low Supply Current in Powerdown State. . . . . . . . . < 1µA
• Pb-Free Plus Anneal Available (RoHS Compliant)
Applications
• Any System Requiring RS-232 Communication Ports
- Battery Powered, Hand-Held, and Portable Equipment
- Laptop Computers, Notebooks, Palmtops
- Digital Cameras
- PDA’s and PDA Cradles
- Cellular/Mobile Phones
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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