Datasheet
ISL83386E
±15kV ESD Protected, +3V to +5.5V, 1µA, 250kbps, RS-232
Transmitters/Receivers with Separate Logic Supply
The ISL83386E contains 3.0V to 5.5V powered
RS-232 transmitters/receivers that meet ElA/TIA-232
and V.28/V.24 specifications, even at VCC = 3.0V.
Targeted applications are PDAs, Palmtops, and cell
phones in which the low operational power
consumption, and even lower standby power
consumption is critical. Efficient on-chip charge-pumps,
coupled with a manual power-down function reduces
the standby supply current to a 1µA trickle. Small
footprint packaging and the use of small, low value
capacitors ensures board space savings as well. Data
rates greater than 250kbps are ensured at worst case
load conditions.
The ISL83386E features a VL pin that adjusts the
logic pin (see “Pin Descriptions” on page 3) output
levels and input thresholds to values compatible with
the VCC powering the external logic (such as a
UART).
Features
• VL pin for compatibility with mixed voltage systems
• ESD protection for RS-232 I/O pins to ±15kV
(IEC61000)
• Low power, pin compatible upgrade for MAX3386E
and SP3203E
• Single SHDN pin disables transmitters and
receivers
• Meets EIA/TIA-232 and V.28/V.24 specifications at
3V
• On-chip charge pumps require only four external
0.1µF capacitors at VCC = 3.3V
• Receiver hysteresis for improved noise immunity
• Very low supply current: 300µA
• Ensured minimum data rate: 250kbps
The single pin powerdown function (SHDN = 0)
disables all the receiver and transmitter outputs, while
shutting down the charge pump to minimize supply
current drain.
• Wide power supply range: Single +3V to +5.5V
Table 1 summarizes the features of the ISL83386E,
and Application Note AN9863 summarizes the
features of each device comprising the 3V RS-232
family.
Applications
Related Literatures
For a full list of related documents, visit our website:
• ISL83386E device page
• Low supply current in powerdown state:
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