MAX3228EBV-T Maxim Integrated, MAX3228EBV-T Datasheet

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MAX3228EBV-T

Manufacturer Part Number
MAX3228EBV-T
Description
RS-232 Interface IC 2.5-5.5V Transceiver
Manufacturer
Maxim Integrated
Series
MAX3228, MAX3229r
Datasheet
1.MAX3228EBV-T.pdf (14 pages)

Specifications of MAX3228EBV-T

Data Rate
250 Kbps
Operating Supply Voltage
2.5 V to 5.5 V
Supply Current
10 uA
Operating Temperature Range
- 40 C to + 85 C
Mounting Style
SMD/SMT
Package / Case
UCSP-20 6 x 5
Number Of Drivers
2
Number Of Receivers
2
19-2140; Rev 1; 5/04
The MAX3228/MAX3229 are +2.5V to +5.5V powered
EIA/TIA-232 and V.28/V.24 communications interfaces
with low power requirements, and high data-rate capa-
bilities, in a chip-scale package (UCSP™).
The MAX3228/MAX3229 achieve a 1µA supply current
with Maxim’s AutoShutdown™ feature. They save
power without changes to 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 0.1µF 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 MAX3228/MAX3229 offer a separate power-supply
input for the logic interface, allowing configurable logic
levels on the receiver outputs and transmitter inputs.
Operating over a +1.65V to V
MAX3228/MAX3229 compatibility with multiple logic
families.
The MAX3229 contains one receiver and one transmit-
ter. The MAX3228 contains two receivers and two
transmitters. The MAX3228/MAX3229 are available in
tiny chip-scale packaging and are specified across the
extended industrial temperature range of -40°C to
+85°C.
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
Typical Operating Circuits continued at end of data sheet.
Pin Configurations appear at end of data sheet.
UCSP is a trademark of Maxim Integrated Products, Inc.
AutoShutdown is a trademark of Maxim Integrated Products, Inc.
Personal Digital Assistants
Cell Phone Data Lump Cables
Set-Top Boxes
Hand-Held Devices
Cell Phones
________________________________________________________________ Maxim Integrated Products
General Description
+2.5V to +5.5V RS-232 Transceivers
CC
range, V
Applications
L
provides the
*Requires solder temperature profile described in the Absolute
Maximum Ratings section.
*UCSP reliability is integrally linked to the user’s assembly
methods, circuit board material, and environment. Refer to the
UCSP Reliabilitly Notice in the UCSP Reliability section of this
data sheet for more information.
MAX3228EBV
MAX3229EBV
6
1µA Low-Power AutoShutdown
250kbps Guaranteed Data Rate
Meets EIA/TIA-232 Specifications Down to +3.1V
RS-232 Compatible to +2.5V Allows Operation
from Single Li+ Cell
Small 0.1µF Capacitors
Configurable Logic Levels
PART
5 Chip-Scale Packaging (UCSP)
TTL/CMOS
TTL/CMOS
OUTPUTS
C
INPUTS
BYPASS
0.1µF
0.1µF
Typical Operating Circuits
C1
C2
0.1µF
C1
D1
B6
D6
C6
B5
A2
A3
A6
-40°C to +85°C
-40°C to +85°C
TEMP RANGE
C1+
C1-
C2+
C2-
T1IN
T2IN
R1OUT
R2OUT
FORCEON
2.5V TO 5.5V
20µA
Ordering Information
V
CC
A1
MAX3228
V
L
GND
V
V
L
L
1.65V TO 5.5V
V
V
E1
V
L
L
L
V
L
A5
FORCEOFF
20µA
INVALID
T1OUT
T2OUT
5kΩ
5kΩ
R1IN
R2IN
V+
V-
0.1µF
in UCSP
E4
E5
E2
C5
B1
A4
E3
E6
TO POWER-
MANAGEMENT
UNIT
V
L
PIN-
PACKAGE
6 x 5 UCSP*
6 x 5 UCSP*
C3
0.1µF
C4
0.1µF
RS-232
OUTPUTS
RS-232
INPUTS
Features
1

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MAX3228EBV-T Summary of contents

Page 1

... Guaranteed Data Rate Meets EIA/TIA-232 Specifications Down to +3.1V RS-232 Compatible to +2.5V Allows Operation from Single Li+ Cell Small 0.1µF Capacitors Configurable Logic Levels PART MAX3228EBV MAX3229EBV *Requires solder temperature profile described in the Absolute Maximum Ratings section. *UCSP reliability is integrally linked to the user’s assembly provides the L methods, circuit board material, and environment ...

Page 2

RS-232 Transceivers in UCSP ABSOLUTE MAXIMUM RATINGS V to GND ...........................................................-0.3V to +6. GND .............................................................-0.3V to +7. GND ..............................................................+0.3V to -7. |V-| (Note 1) ................................................................+13V V to GND..............................................................-0.3V to +6.0V ...

Page 3

RS-232 Transceivers ELECTRICAL CHARACTERISTICS (continued +2.5V to +5.5V +1.65V to +5.5V, C1–C4 = 0.1µF, tested at +3.3V ±10 +25°C, unless otherwise noted.) (Note 3) PARAMETER SYMBOL RECEIVER INPUTS Input Voltage ...

Page 4

RS-232 Transceivers in UCSP TIMING CHARACTERISTICS (V = +2.5V to +5.5V +1.65V to +5.5V, C1–C4 = 0.1µF, tested at +3.3V ±10 +25°C, unless otherwise noted.) (Note 3) PARAMETER SYMBOL Maximum Data Rate ...

Page 5

RS-232 Transceivers (V = +3.3V, 250kbps data rate, 0.1µF capacitors, all transmitters loaded with 3kΩ and C CC OPERATING SUPPLY CURRENT vs. SUPPLY VOLTAGE (MAX3229 2.5 ...

Page 6

RS-232 Transceivers in UCSP PIN NAME MAX3228 MAX3229 FORCEOFF R_OUT GND INVALID T_OUT E5 R_IN Table 1. Operating Supply Options ...

Page 7

RS-232 Transceivers +0.3V R_IN -0.3V *TRANSMITTERS ARE DISABLED, REDUCING SUPPLY CURRENT TO 1µA IF ALL RECEIVER INPUTS ARE BETWEEN +0.3V AND -0.3V FOR AT LEAST 30µs. Figure 2a. MAX322_ Entering 1µA Supply Mode via AutoShutdown For example, ...

Page 8

RS-232 Transceivers in UCSP TRANSMITTERS ENABLED, INVALID HIGH +2.7V INDETERMINATE +0.3V AUTOSHUTDOWN, TRANSMITTERS DISABLED, 0 1µA SUPPLY CURRENT, INVALID LOW -0.3V INDETERMINATE -2.7V TRANSMITTERS ENABLED, INVALID HIGH a) RECEIVER INPUT VOLTAGE ( INVALID OUTPUT (V) ...

Page 9

RS-232 Transceivers Table 3. Output Control Truth Table TRANSCEIVER STATUS Shutdown (AutoShutdown) Shutdown (Forced Off) Normal Operation (Forced On) Normal Operation (AutoShutdown Don’t care. † NVALID output state is determined by R_IN input ...

Page 10

RS-232 Transceivers in UCSP 0.1µ C1 C1- MAX3229 C2 C2 T1IN T1OUT V L R1IN R1OUT 5kΩ INVALID FORCEON FORCEOFF GND Figure 6. ...

Page 11

RS-232 Transceivers Table 5. Reliability Test Data TEST - +85 C, Temperature Cycle - +100 C Operating Life Moisture Resistance + +60 C, 90% RH Low-Temperature ...

Page 12

RS-232 Transceivers in UCSP C1+ C1 GND 1 12 ______________________________________________________________________________________ TOP VIEW C2+ C2 N.C. N.C. N.C. FON N.C. FOFF N.C. N.C. N.C. N.C. N.C. N.C. INV ...

Page 13

RS-232 Transceivers C2+ C2 N.C. N. C1+ N.C. N.C. C1- N.C. N.C. D INV E GND T1OUT ______________________________________________________________________________________ Pin Configurations (continued) TOP VIEW V- V T1IN L N.C. ...

Page 14

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 14 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2004 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products ...

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