19-3250; Rev 0; 5/04
鹵15kV ESD-Protected +2.5V to +5.5V
RS-232 Transceivers in UCSP
General Description
The MAX3230E/MAX3231E are +2.5V to +5.5V pow-
ered EIA/TIA-232 and V.28/V.24 communications inter-
faces with low power requirements, high data-rate
capabilities, and enhanced electrostatic discharge
(ESD) protection, in a chip-scale package (UCSP鈩?.
All transmitter outputs and receiver inputs are protect-
ed to 鹵15kV using IEC 1000-4-2 Air-Gap Discharge,
鹵8kV using IEC 1000-4-2 Contact Discharge, and
鹵15kV using the Human Body Model.
The MAX3230E/MAX3231E achieve a 1碌A(chǔ) supply cur-
rent with Maxim鈥檚 AutoShutdown鈩?feature. They save
power without changing the existing BIOS or operating
systems by entering low-power shutdown mode when
the RS-232 cable is disconnected, or when the trans-
mitters of the connected peripherals are off.
The transceivers have a proprietary low-dropout trans-
mitter output stage, delivering RS-232-compliant perfor-
mance from a +3.1V to +5.5V supply, and RS-232-
compatible performance with a supply voltage as low
as +2.5V. The dual charge pump requires only four,
small 0.1碌F capacitors for operation from a +3.0V sup-
ply. Each device is guaranteed to run at data rates of
250kbps while maintaining RS-232 output levels.
The MAX3230E/MAX3231E offer a separate power-sup-
ply input for the logic interface, allowing configurable
logic levels on the receiver outputs and transmitter
inputs. Operating over a +1.65V to V
CC
range, V
L
pro-
vides the MAX3230E/MAX3231E compatibility with mul-
tiple logic families.
The MAX3231E contains one receiver and one transmit-
ter. The MAX3230E contains two receivers and two trans-
mitters. The MAX3230E/MAX3231E are available in tiny
chip-scale packaging and are specified across the
extended industrial (-40擄C to +85擄C) temperature range.
鈾?/div>
6 x 5 Chip-Scale Packaging (UCSP)
鈾?/div>
ESD Protection for RS-232 I/O Pins
鹵15kV鈥擨EC 1000-4-2 Air-Gap Discharge
鹵8kV鈥擨EC 1000-4-2 Contact Discharge
鹵15kV鈥擧uman Body Model
鈾?/div>
1碌A(chǔ) Low-Power AutoShutdown
鈾?/div>
250kbps Guaranteed Data Rate
鈾?/div>
Meet EIA/TIA-232 Specifications Down to +3.1V
鈾?/div>
RS-232 Compatible to +2.5V Allows Operation
from Single Li+ Cell
鈾?/div>
Small 0.1碌F Capacitors
鈾?/div>
Configurable Logic Levels
Features
MAX3230E/MAX3231E
Ordering Information
P
聽(tīng)
ART
MAX3230EE
BV-T
MAX3231EE
BV-T
T
聽(tīng)
EMP RANGE
-40擄C to +85擄C
-40擄C to +85擄C
B
聽(tīng)
UMP-PACKAGE
6 x 5 UCSP
6 x 5 UCSP
聽(tīng)
Typical Operating Circuits
2.5V TO 5.5V 1.65V TO 5.5V
0.1碌F
C
BYPASS
0.1碌F
A1
C1
C1
0.1碌F
D1
A2
C2
0.1碌F
A3
C1+
C1-
C2+
C2-
V
L
T1OUT
V
L
B6 T2IN
V
L
D6 R1OUT
R1IN
E6
T2OUT E4
E3
RS-232
OUTPUTS
V
CC
A5
V
L
V+
B1
C3
0.1碌F
A4
C4
0.1碌F
MAX3230E
V-
A6 T1IN
TTL/CMOS
INPUTS
Applications
Personal Digital Assistants
Cell-Phone Data Lump Cables
Set-Top Boxes
Hand-Held Devices
Cell Phones
TTL/CMOS
OUTPUTS
C6 R2OUT
V
L
5k鈩?/div>
R2IN E5
RS-232
INPUTS
5k鈩?/div>
Typical Operating Circuits continued at end of data sheet.
Pin Configurations appear at end of data sheet.
B5 FORCEON
INVALID
E2
TO POWER-
MANAGEMENT
UNIT
V
L
FORCEOFF C5
GND
E1
UCSP is a trademark of Maxim Integrated Products, Inc.
AutoShutdown is a trademark of Maxim Integrated Products, Inc.
________________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim鈥檚 website at www.maxim-ic.com.
MAX3230E PDF文件相關(guān)型號(hào)
MAX3230EEBV-T,MAX3231E,MAX3231EEBV-T,MAX323CSA
MAX3230E相關(guān)型號(hào)PDF文件下載
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