MAX13235EETP+T Fast Delivery |IC PHOENIX CO.,LIMITED

MAX13235EETP+T ,3Mbps RS-232 Transceivers with Low-Voltage Interface, ±15kV HBM ESDApplicationsFunctional Diagrams• Telematics• GPS Systems1.62V to VCC 3.0V to 5.5V• Industrial Syste ..
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MAX13235EETP+T
3Mbps RS-232 Transceivers with Low-Voltage Interface, ±15kV HBM ESD
MAX13234E–MAX13237E3Mbps RS-232 Transceivers with
Low-Voltage Interface, ±15kV
HBM ESD
General Description
The MAX13234E-MAX13237E are a family of 2x2 and
1x1 RS-232 and V.28/V.24 transceivers with high speed
data rates up to 3Mbps that operate from either a 3.3V
or 5V supply.
All devices achieve a 1µA supply current using Maxim’s
AutoShutdown Plus™ feature. These devices automati-
cally enter a low-power shutdown mode when the
RS-232 cable is disconnected or the devices driving
the transmitter and receiver inputs are inactive for more
than 30s.
The MAX13234E–MAX13237E are available in space-
saving TQFN and TSSOP packages and operate over
the -40°C to +85°C temperature range.
ApplicationsTelematicsGPS SystemsIndustrial SystemsPortable DevicesWireless ModulesPOS SystemsCommunication SystemsData Cables
Benefits and FeaturesData Rate Up to 3Mbps for Faster ThroughputSaves Board SpaceIntegrated Low-Voltage Logic for Easy Interface
with ASICs and MicrocontrollersIntegrated ±15kV HBM ESD ProtectionIntegrated Charge-Pump Circuitry Requiring Only
Four External 0.1µF Capacitors for 3.3V Operation +3V to +5.5V Supply VoltageAutoShutdown Plus Achieves 1µA Shutdown Current
Reduces Power ConsumptionAvailable in 20-pin TSSOP, TQFN-EP, and 16-pin
TQFN-40°C to +85°C Operating Temperature
Ordering Information/Selector Guide
PARTDRIVERS/
RECEIVERS
MAXIMUM
DATA RATETEMP RANGEPIN-PACKAGE
MAX13234EEUP+2 x 2250kbps-40°C to +85°C 20 TSSOP
MAX13234EETP+2 x 2250kbps-40°C to +85°C 20 TQFN-EP*
MAX13235EEUP+2 x 23Mbps-40°C to +85°C 20 TSSOP
MAX13235EETP+2 x 23Mbps-40°C to +85°C 20 TQFN-EP*
MAX13236EETE+1 x 1250kbps-40°C to +85°C 16 TQFN-EP*
MAX13237EETE+1 x 13Mbps-40°C to +85°C 16 TQFN-EP*
Functional Diagrams continued at end of data sheet.
+Denotes a lead-free/RoHS-compliant package.
Functional Diagrams
GIC-L
EVEL T
TIO
T2IN
T1IN
R1OUT
R2OUT
FORCEOFF
FORCEON
READY
C1+
C1-
C2+
C2-VCC
1.62V to VCC3.0V to 5.5V
CBYPASS2
GND
RS-232
OUTPUTS
RS-232
INPUTSTTL/CMOS
OUTPUTS
TTL/CMOS
INPUTS
T1OUT
T2OUT
R1IN
R2IN
MAX13234E
MAX13235E
5kΩ
5kΩC1
CBYPASS1
MAX13234E–MAX13237E3Mbps RS-232 Transceivers with
Low-Voltage Interface, ±15kV
HBM ESD
Absolute Maximum Ratings
Electrical Characteristics
(VCC = +3V to +5.5V, VL= +1.62V to VCC, TA= -40°C to +85°C, C1–C4 = 0.1µF, VCC= VL, tested at 3.3V ±10%. Typical values are
at TA= +25°C.) (Note 2)
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.
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.
(All voltages referenced to GND.)
VCC......................................................................-0.3V to +6.0V.........................................................................-0.3V to +6.0V
V+ ........................................................................-0.3V to +7.0V
V- .........................................................................+0.3V to -7.0V
(V+) + |(V-)| .....................................................................+13.0V
T_IN, FORCEOFF, FORCEON .....................-0.3V to (VL+ 0.3V)
R_IN ...................................................................................±25V
T_OUT..............................................................................±13.2V
R_OUT, READY ...........................................-0.3V to (VL+ 0.3V)
Short-Circuit Duration
T_OUT to GND .........................................................Continuous
Continuous Power Dissipation (TA= +70°C)
16-Pin TQFN (derate 20.8mW/°C above +70°C) .....1666mW
20-Pn TSSOP (derate 10.9mW/°C above +70°C) ......879mW
20-Pin TQFN (derate 21.3mW/°C above +70°C) .....1702mW
Junction-to-Case Thermal Resistance (θJC) (Note 1)
16-Pin TQFN .................................................................2°C/W
20-Pin TSSOP .............................................................20°C/W
20-Pin TQFN .................................................................2°C/W
Junction-to-Ambient Thermal Resistance (θJA) (Note 1)
16-Pin TQFN ...............................................................30°C/W
20-Pin TSSOP .............................................................73°C/W
20-Pin TQFN ...............................................................29°C/W
Operating Temperature Range
MAX1323x Operating Temperature Range....-40°C to +85°C
MAX1323x Operating Temperature Range..-40°C to +105°C
Storage Temperature Range ...........................-65°C to +160°C
Lead Temperature (soldering, 10s) .................................+300ºC
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
Supply VoltageVCC35.5V
Logic Supply VoltageVL1.62VCCV
FORCEOFF = FORCEON = VL, no loads0.31mA
VL = 0V110
VCC Supply CurrentICCAutoShutDown Plus, FORCEOFF = VL,
FORCEON = GND, all R_IN idle, all T_IN
idle.
110µA
VCC Shutdown CurrentICCSHFORCEOFF = GND110µA
VL Supply CurrentILVCC = +5.5V110µA
VL Shutdown CurrentILSHFORCEOFF = GND110µA
LOGIC INPUTS (T_IN, FORCEON, FORCEOFF, Referred to VL)
Input Threshold LowVILTested at room temperature only1/3 x VLV
Input Threshold HighVIHTested at room temperature only2/3 x VLV
Input Hysteresis60mV
Input Leakage Current±0.01±1µA
RECEIVER OUTPUTS (READY)
Output-Voltage LowVOLIOUT = 0.8mA0.4V
Output-Voltage HighVOHIOUT = -0.5mAVL - 0.6VL - 0.1V
3Mbps RS-232 Transceivers with
Low-Voltage Interface, ±15kV
HBM ESD
MAX13234E–MAX13237E
Electrical Characteristics (continued)
(VCC = +3V to +5.5V, VL= +1.62V to VCC, TA= -40°C to +85°C, C1–C4 = 0.1µF, VCC= VL, tested at 3.3V ±10%. Typical values are
at TA= +25°C.) (Note 2)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
RECEIVER INPUTS
Input-Voltage Range- 25+25V
VCC = +3.3V0.61.2Input Threshold LowVILTA = +25°CVCC = +5V0.81.5V
VCC = +3.3V1.52.4Input Threshold HighVIHTA = +25°CVCC = +5V1.82.4V
Input Hysteresis0.5V
Input Resistance357kΩ
TRANSMITTER OUTPUTS
Output-Voltage SwingAll transmitter outputs loaded with 3kΩ to
GND±5±5.4V
Output ResistanceVCC = V+ = V- = 0V, transmitter outputs =
±2V30010MΩ
Output Short-Circuit Current-60+60mA
Output Leakage CurrentVCC = 0V or +3V to +5.5V, VOUT = ±12V,
transmitters disabled-25+25µA
AutoShutdown Plus (FORCEON = GND, FORCEOFF = VL)
Positive threshold, Figure 12.7VReceiver Input Threshold Valid
LevelNegative threshold, Figure 1-2.7V
Receiver Input Threshold
Invalid LevelFigure 1-0.3+0.3V
Receiver or Transmitter Edge-to-
Transmitters EnabledtWUVL = 5V, Figure 1 (Note 3)100µs
Receiver or Transmitter Edge-to-
Transmitters ShutdowntAUTOSHDNVL = 5V, Figure 1 (Note 3)153060s
TIMING CHARACTERISTICS (MAX13234E/MAX13236E)
Maximum Data RateRL = 3kΩ, CL = 1000pF, one transmitter
switching250kbps
Receiver Propagation DelaytRPHL,
tRPLHCL = 150pF, Figures 2, 30.15µs
Transmitter Skew|tTPHL -
tTPLH|Figures 4, 5 (Note 4)100ns
Receiver Skew|tRPHL -
tRPLH|Figures 2, 350ns
MAX13234E–MAX13237E3Mbps RS-232 Transceivers with
Low-Voltage Interface, ±15kV
HBM ESD
Electrical Characteristics (continued)
(VCC = +3V to +5.5V, VL= +1.62V to VCC, TA= -40°C to +85°C, C1–C4 = 0.1µF, VCC= VL, tested at 3.3V ±10%. Typical values are
at TA= +25°C.) (Note 2)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
Transition-Region Slew Rate
VCC = +3.3V, TA = +25°C, RL = 3kΩ to 7kΩ,
measured from +3V to -3V or -3V to +3V,
one transmitter switching, CL = 150pF to
1000pF30V/µs
TIMING CHARACTERISTICS (MAX13235E/MAX13237E)
RL = 3kΩ, CL = 250pF, one transmitter
switching1
Maximum Data RateRL = 3kΩ, CL = 150pF, one transmitter
switching3
Mbps
Receiver Propagation DelaytRPHL,
tRPLHCL = 150pF, Figures 2, 30.15µs
Transmitter Skew|tTPHL –
tTPLH|Figures 4, 5 (Note 4)25ns
Receiver Skew|tRPHL –
tRPLH|Figures 2, 350ns
Transition-Region Slew Rate
VCC = +3.3V, TA = +25°C, RL = 3kΩ to 7kΩ,
measured from T_OUT = +3V to -3V or -3V
to +3V, one transmitter switching, CL =
150pF to 1000pF150V/µs
ESD PROTECTION
Human Body Model±15
IEC 61000-4-2 Air Discharge±15R_IN, T_OUT to GND
IEC 61000-4-2 Contact Discharge±8
Note 2:All devices are 100% production tested at TA= +85°C. All temperature limits are guaranteed by design.
Note 3:A transmitter/receiver edge is defined as a transition through the transmitter/receiver input-logic thresholds.
Note 4:Transmitter skew is measured at the transmitter zero cross points.
3Mbps RS-232 Transceivers with
Low-Voltage Interface, ±15kV
HBM ESD
MAX13234E–MAX13237E
Test Circuits/Timing Diagram
VCC
READY
TRANSMITTER
INPUTS
RECEIVER
INPUTS
TRANSMITTER
OUTPUTS
VCC
tAUTOSHDNtWUtWUtAUTOSHDN
Figure 1. AutoShutdown Plus, and READY Timing Diagram
T_OUTR_OUTR_INT_IN
Figure 2. Receiver Test Circuit
MAX13234E–MAX13237E3Mbps RS-232 Transceivers with
Low-Voltage Interface, ±15kV
HBM ESD
Test Circuits/Timing Diagram (continued)
tTPHL
-VO
T_IN
T_OUT
-3V
tTPLH
-3VSRF = 6/tFSRR = 6/tR
VL/2VL/2
tR, tF ≤ 10ns
Figure 5. Transmitter Propagation Delay
T_OUTT_INVO
Figure 4. Transmitter Test Circuit
VOH
VOL
R_IN
R_OUT
1.3V
tRPHL
1.7V
tRPLH
tR, tF ≤ 10ns
VL/2VL/2
Figure 3. Receiver Propagation Delay
MAX13234E–MAX13237E
3Mbps RS-232 Transceivers with
Low-Voltage Interface, ±15kV
HBM ESD
Typical Operating Characteristics
(VCC= VL= 3.3V, TA= +25°C, unless otherwise noted.)
TRANSMITTER OUTPUT VOLTAGE
vs. LOAD CAPACITANCE
MAX13234E toc01
LOAD CAPACITANCE (pF)
OUTPUT VOLTAGE (V)
MAX13234E/MAX13236E
RL = 3kΩ
T1 AT 250kbps
TRANSMITTER OUTPUT VOLTAGE
vs. LOAD CAPACITANCE
MAX13234E toc02
LOAD CAPACITANCE (pF)
OUTPUT VOLTAGE (V)
MAX13235E/MAX13237E
RL = 3kΩ
T1 AT 3Mbps
SLEW RATE vs. LOAD CAPACITANCE
MAX13234E toc03
LOAD CAPACITANCE (pF)
SLEW RATE (V/
MAX13234E/MAX13236E
RL = 3kΩ
SR+
SR-
SLEW RATE vs. LOAD CAPACITANCE
MAX13234E toc04
LOAD CAPACITANCE (pF)
SLEW RATE (V/
MAX13235E/MAX13237E
RL = 3kΩ
SR+
SR-
VCC SUPPLY CURRENT
vs. LOAD CAPACITANCE
MAX13234E toc05
LOAD CAPACITANCE (pF)
SUPPLY CURRENT (mA)
MAX13234ERL = 3kΩ
T1 AT 250kbps
T2 AT 15.6kbps
VCC SUPPLY CURRENT
vs. LOAD CAPACITANCE
MAX13234E toc06
LOAD CAPACITANCE (pF)
SUPPLY CURRENT (mA)
MAX13235ERL = 3kΩ
T1 AT 3Mbps
T2 AT 187.5kbps
TRANSMITTER SKEW
vs. LOAD CAPACITANCE
MAX13234E toc07
LOAD CAPACITANCE (pF)
TRANSMITTER SKEW (ns)
MAX13234E/MAX13236E
RL = 3kΩ
1 TRANSMITTER
OPERATING AT 250kbps
TRANSMITTER SKEW
vs. LOAD CAPACITANCE
MAX13234E toc08
LOAD CAPACITANCE (pF)
TRANSMITTER SKEW (ns)
MAX13235E/MAX13237E
RL = 3kΩ
1 TRANSMITTER
OPERATING AT 3Mbps
READY TURN-ON TIME
vs. TEMPERATURE
MAX13234E toc09
TEMPERATURE (°C)
READY TURN-ON TIME (
-4085
MAX13234E–MAX13237E
3Mbps RS-232 Transceivers with
Low-Voltage Interface, ±15kV
HBM ESD
READY TURN-OFF TIME
vs. TEMPERATURE
MAX13234E toc10
TEMPERATURE (°C)
READY TURN-OFF TIME (
SUPPLY CURRENT vs. DATA RATE
MAX13234E toc11
DATA RATE (kbps)
SUPPLY CURRENT (mA)
MAX13235E
1 TRANSMITTER
OPERATING
RL = 3kΩ, CL = 150pF
LOGIC-INPUT THRESHOLD vs. VL
MAX13234E toc12
VL (V)
LOGIC-INPUT THRESHOLD (V)
VCC = 5.5V
VIH
VIL
TRANSMITTER OUTPUT VOLTAGE
vs. SUPPLY VOLTAGE
MAX13234E toc13
SUPPLY COLTAGE (V)
OUTPUT VOLTAGE (V)
MAX13235E/MAX13237E
RL = 3kΩ, CL = 150pF
1 TRANSMITTER
OPERATING AT 1Mbps
TRANSMITTER OUTPUT VOLTAGE
vs. LOAD CURRENT
MAX13234E toc14
LOAD CURRENT (mA)
OUTPUT VOLTAGE (V)4
1 TRANSMITTER
OPERATING, DC
Typical Operating Characteristics (continued)
(VCC= VL= 3.3V, TA= +25°C, unless otherwise noted.)
3Mbps RS-232 Transceivers with
Low-Voltage Interface, ±15kV
HBM ESD
MAX13234E–MAX13237E
Pin Descriptions
PIN
MAX13234E/
MAX13235E
MAX13236E/
MAX13237E
TSSOPTQFN-EPTQFN-EP
NAMEFUNCTION1914READY
Ready to Transmit Output, Active-High. READY is enabled
high when V- goes below -4V and the device is ready to
transmit.116C1+Positive Terminal of the Voltage Doubler Charge-Pump
Capacitor2015V++5.5V Generated by the Charge Pump21C1-Negative Terminal of the Voltage Doubler Charge-Pump
Capacitor32C2+Positive Terminal of the Inverting Charge-Pump Capacitor43C2-Negative Terminal of the Inverting Charge-Pump Capacitor54V--5.5V Generated by the Charge Pump6—T2OUTRS-232 Transmitter Output 2—5RINRS-232 Receiver Input7—R2INRS-232 Receiver Input 2—6ROUTCMOS Receiver Output. VL referred logic.8—R2OUTCMOS Receiver Output 2. VL referred logic.97VLLogic-Level Supply. All CMOS inputs and outputs are related
to this supply.—8TINCMOS Transmitter Input. VL referred logic.10—T2INCMOS Transmitter Input 2. VL referred logic.11—T1INCMOS Transmitter Input 1. VL referred logic.129FORCEON
FORCEON Input, Active-High. VL referenced logic. Drive
FORCEON high to override automatic circuitry keeping
transmitters on (FORCEOFF must be high).
See Table 1.13—R1OUTCMOS Receiver Output 1. VL referred logic.—10TOUTRS-232 Transmitter Output14—R1INRS-232 Receiver Input 115—T1OUTRS-232 Transmitter Output 11611GNDGround1712VCC+3V to +5.5V Supply Voltage1813FORCEOFF
FORCEOFF Input, Active-Low. VL referenced logic. Drive
FORCEOFF low to shut down transmitters and on-board
charge pumps. All receiver and transmitter outputs are tri-
stated. This overrides all automatic circuitry and FORCEON
(Table 1).——EPExposed Pad. Connect EP to GND or leave unconnected.

Partno	Mfg	Dc	Qty	Available	Descript
MAX13235EETP+T	MAXIM	N/a	500	avai	3Mbps RS-232 Transceivers with Low-Voltage Interface, ±15kV HBM ESD