ISL83387E Datasheet, PDF (1/13 Pages) Intersil Corporation – +/-15kV ESD Protected,+3#V to +5.5V, 1Microamp, 250kbps, RS-232 Transceivers with Enhanced Automatic Powerdown and a Separate Logic Supply

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Data Sheet
February 2003
ISL83387E
FN6040
+/-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 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 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 V_L pin that adjusts the logic pin
output levels and input thresholds to values compatible with
the V_CC 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)
ISL83387EIV
(83387EIV)
ISL83387EIV-T
(83387EIV)
TEMP.
RANGE (^oC)
PACKAGE
-40 to 85 24 Ld TSSOP
-40 to 85 Tape and Reel
PKG. NO.
M24.173
M24.173
Features
• V_L 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
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
PART
NUMBER
ISL83387E
TABLE 1. SUMMARY OF FEATURES
NO. OF NO. OF DATA RATE Rx. ENABLE
Tx.
Rx.
(kbps) FUNCTION?
V_L LOGIC
SUPPLY PIN?
MANUAL
ENHANCED AUTOMATIC
POWER- DOWN? POWERDOWN FUNCTION?
3
3
250
NO
YES
YES
YES
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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