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Maxim Integrated Semiconductor Electronic Components Datasheet

MAX13223E Datasheet

2Tx/2Rx RS-232 Transceiver

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MAX13223E
±70V Fault-Protected, 3.0V to 5.5V,
2Tx/2Rx RS-232 Transceiver
General Description
The MAX13223E is a +3.0V to +5.5V-powered EIA/TIA-232
and V.28 communications interface with fault protection
on the RS-232 line interface. This allows shorts of the
transmitter outputs and receiver inputs to voltages in the
±70V range without adversely affecting the MAX13223E.
The MAX13223E achieves 1μA supply current using
Maxim’s AutoShutdown™ feature. The MAX13223E
automatically enters a low-power shutdown mode when
the RS-232 cable is disconnected or the receivers
are inactive. The device turns on again when a valid
transition at any receiver input is sensed. A proprietary,
high-efficiency, dual charge-pump power supply and a
low-dropout transmitter combine to deliver true RS-232
performance from a single +3.0V to +5.5V supply.
The MAX13223E has two receivers and two drivers and is
guaranteed to run at data rates of 250kbps for one trans-
mitter switching while maintaining RS-232 output levels.
The MAX13223E operates from input voltages ranging from
+3.0V to +5.5V and is available in a 20-pin, 6.5mm x 4.4mm,
TSSOP package. The MAX13223E is specified over the
-40°C to +85°C temperature range.
Applications
● Telematics Equipment
● Base Stations
● Utility Meters
● Industrial Equipment
● Telecomm Equipment
● POS Terminal Equipment
AutoShutdown is a trademark of Maxim Integrated Products, Inc.
Benefits and Features
● Robust Protection to Withstand Load Dumps,
Miswiring, and Connector Failures
±70V Fault Protection
Overvoltage Current Limiting
Current Protection at Transmitter Outputs
Thermal Shutdown Protection
● Flexible Power Requirements Simplify Design
+3.0V to +5.5V Single Supply Voltage
True RS-232 Performance (Up to 250kbps) Even
from +3.0V Supply Voltage
● AutoShutdown Simplifies Power Savings
Automatically Enters Shutdown Mode if RS-232
Cable is Disconnected or Receivers are Inactive
Automatically Activates from Shutdown When Any
Valid Transition is Sensed
1µA Typical Shutdown Current
Ordering Information
PART
TEMP RANGE
MAX13223EEUP+ -40°C to +85°C
PIN-PACKAGE
20 TSSOP
+Denotes a lead(Pb)-free/RoHS-compliant package.
Typical Operating Circuit
VCC
CBYPASS
0.1µF
C1
C2
TTL/CMOS
INPUTS
VCC
C1+ V+
C1- MAX13223E
C2+
V-
C2-
T1IN T1OUT
T2IN T2OUT
C3
C4
RS-232
OUTPUTS
TTL/CMOS
OUTPUTS
R1OUT
R1IN
5k
R2OUT
R2IN
5k
EN INVALID
FORCEON
FORCEOFF
GND
RS-232
INPUTS
TO POWER-
MANAGEMENT
UNIT
VCC
19-4585; Rev 3; 2/15


Maxim Integrated Semiconductor Electronic Components Datasheet

MAX13223E Datasheet

2Tx/2Rx RS-232 Transceiver

No Preview Available !

MAX13223E
±70V Fault-Protected, 3.0V to 5.5V,
2Tx/2Rx RS-232 Transceiver
Absolute Maximum Ratings
(Voltages referenced to GND.)
VCC........................................................................-0.3V to +7.0V
V+..........................................................................-0.3V to +7.0V
V- ..........................................................................+0.3V to -7.0V
V+ to V- ...............................................................................+13V
Input Voltages
T1IN, T2IN, EN, FORCEON, FORCEOFF .......-0.3V to +6.0V
R1IN, R2IN ......................................................................±70V
Output Voltages
T1OUT, T2OUT ...............................................................±70V
R1OUT, R2OUT, INVALID ........................ -0.3V to (VCC + 0.3V)
Short-Circuit Duration
T1OUT, T2OUT.......................................................Continuous
Continuous Power Dissipation (TA = +70°C)
TSSOP (derate 13.6mW/°C above +70°C) ...............1084mW
Operating Temperature Range ........................... -40°C to +85°C
Junction Temperature.......................................................+150°C
Storage Temperature Range ............................ -65°C to +150°C
Lead Temperature (soldering, 10s).................................. +300°C
Soldering Temperature (reflow)........................................+260°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these
or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect
device reliability.
Package Thermal Characteristics (Note 1)
TSSOP
Junction-to-Ambient Thermal Resistance (θJA)........73.8°C/W
Junction-to-Case Thermal Resistance (θJC)................20°C/W
Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer
board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial.
Electrical Characteristics
(VCC = +3.0V to +5.5V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at VCC = +3.3V, TA = +25°C, unless other-
wise noted. For VCC = +3.0V to +3.6V, C1 = C2 = C3 = 0.1μF, C4 = 1μF. For VCC = +4.5V to +5.5V, C1 = 47nF, C2 = C3 = 330nF,
C4 = 1μF.) (Note 2)
PARAMETER
Supply Voltage
Supply Current
Supply Current AutoShutdown
Supply Current Shutdown
LOGIC INPUTS
Input-Logic Low
Input-Logic High
Transmitter Input Hysteresis
Input Leakage Current
RECEIVER OUTPUTS
Output Leakage Current
Output-Voltage Low
Output-Voltage High
SYMBOL
VCC
IASD
ISD
CONDITIONS
AutoShutdown disabled (FORCEON =
FORCEOFF = VCC), no load
FORCEON = GND, FORCEOFF = VCC,
R1IN and R2IN idle, T1IN and T2IN idle
FORCEOFF = GND
VT_IN,LO
VT_IN,HI
VTX,INHYS
IIN,LKG
T_IN, EN, FORCEON, FORCEOFF,
VCC = +3.3V to +3.6V, +5.0V to +5.5V
T_IN, FORCEON,
FORCEOFF, EN
VCC = +3.3V
VCC = +5.0V
T_IN, EN, FORCEON, FORCEOFF
IRX,OUT,LKG EN = VCC
VRX,OUT,LO IOUT = 1.6mA
VRX,OUT,HI IOUT = -1.0mA
MIN TYP MAX UNITS
3.0 5.5 V
8 15 mA
1.0 10
1.0 10
µA
µA
0.8
2.0
2.4
0.5
±0.01
±1
V
V
V
µA
±0.05
VCC - VCC -
0.6 0.2
±10
0.4
µA
V
V
www.maximintegrated.com
Maxim Integrated 2


Part Number MAX13223E
Description 2Tx/2Rx RS-232 Transceiver
Maker Maxim Integrated Products
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