ISL83385E
TM
Data Sheet
January 2001
File Number
6001
15kV ESD Protected, +3V to +5.5V,
+/-1 Microamp, 250kbps,
RS-232 Transmitters/Receivers
The Intersil ISL83385E contains 3.0V to 5.5V powered
RS-232 transmitters/receivers which meet ElA/TIA-232 and
V.28/V.24 speci鏗乧ations, 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. Ef鏗乧ient on-chip
charge pumps, coupled with a manual powerdown function
reduces the standby supply current to a 1碌A(chǔ) 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 device is fully compatible with 3.3V only
systems, mixed 3.3V and 5.0V systems, and 5.0V only
systems.
The single pin powerdown function (SHDN = 0) disables all
the transmitters, while shutting down the charge pump to
minimize supply current drain.
Table 1 summarizes the features of the ISL83385E, while
Application Note AN9863 summarizes the features of each
device comprising the 3V RS-232 family.
Features
鈥?ESD Protection for RS-232 I/O Pins to
鹵
15kV (IEC1000)
鈥?Low Power, Pin Compatible Upgrade for MAX3385E
鈥?Single SHDN Pin Disables Transmitters
鈥?Receivers Active in Powerdown
鈥?Meets EIA/TIA-232 and V.28/V.24 Speci鏗乧ations at 3V
鈥?Latch-Up Free
鈥?On-Chip Voltage Converters Require Only Four External
0.1碌F Capacitors
鈥?Receiver Hysteresis For Improved Noise Immunity
鈥?Very Low Supply Current . . . . . . . . . . . . . . . . . . . . 0.3mA
鈥?Guaranteed Minimum Data Rate . . . . . . . . . . . . 250kbps
鈥?Guaranteed Minimum Slew Rate . . . . . . . . . . . . . . . 6V/碌s
鈥?Wide Power Supply Range. . . . . . . . Single +3V to +5.5V
鈥?Low Supply Current in Powerdown State . . . . . . . . . <1碌A(chǔ)
Applications
鈥?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
Ordering Information
PART
NUMBER
ISL83385ECB
ISL83385ECB-T
ISL83385ECA
ISL83385ECA-T
ISL83385EIB
ISL83385EIB-T
ISL83385EIA
ISL83385EIA-T
TEMP.
RANGE (
o
C)
0 to 70
0 to 70
0 to 70
0 to 70
-40 to 85
-40 to 85
-40 to 85
-40 to 85
PACKAGE
18 Ld SOIC
Tape and Reel
20 Ld SSOP
Tape and Reel
18 Ld SOIC
Tape and Reel
20 Ld SSOP
Tape and Reel
PKG. NO.
M18.3
M18.3
M20.209
M20.209
M18.3
M18.3
M20.209
M20.209
TABLE 1. SUMMARY OF FEATURES
PART
NUMBER
ISL83385E
NO. OF NO. OF
Tx.
Rx.
2
2
NO. OF
MONITOR Rx.
(R
OUTB
)
0
DATA
RATE
(kbps)
250
Rx. ENABLE
FUNCTION?
NO
READY
OUTPUT?
NO
MANUAL
POWER-
DOWN?
YES
AUTOMATIC
POWERDOWN
FUNCTION?
NO
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143
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Copyright 漏 Intersil Corporation 2001