RS-232 Transceivers. MAX13235E Datasheet

MAX13235E Transceivers. Datasheet pdf. Equivalent

MAX13235E Datasheet
Recommendation MAX13235E Datasheet
Part MAX13235E
Description 3Mbps RS-232 Transceivers
Feature MAX13235E; MAX13234E–MAX13237E 3Mbps RS-232 Transceivers with Low-Voltage Interface, ±15kV HBM ESD General De.
Manufacture Maxim Integrated
Datasheet
Download MAX13235E Datasheet




Maxim Integrated MAX13235E
MAX13234E–MAX13237E
3Mbps 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.
Applications
Telematics
GPS Systems
Industrial Systems
Portable Devices
Wireless Modules
POS Systems
Communication Systems
Data Cables
Benefits and Features
Data Rate Up to 3Mbps for Faster Throughput
Saves Board Space
Integrated Low-Voltage Logic for Easy Interface
with ASICs and Microcontrollers
Integrated ±15kV HBM ESD Protection
Integrated Charge-Pump Circuitry Requiring Only
Four External 0.1µF Capacitors for 3.3V Operation
+3V to +5.5V Supply Voltage
AutoShutdown Plus Achieves 1µA Shutdown Current
Reduces Power Consumption
Available in 20-pin TSSOP, TQFN-EP, and 16-pin
TQFN
-40°C to +85°C Operating Temperature
Functional Diagrams
C1
C2
TTL/CMOS
INPUTS
TTL/CMOS
OUTPUTS
1.62V to VCC
CBYPASS1
3.0V to 5.5V
CBYPASS2
VL VCC
C1+ V+
C3
C1- MAX13234E
C2+
MAX13235E
V-
C4
C2-
T1IN T1OUT
RS-232
OUTPUTS
T2IN T2OUT
R1OUT
R1IN
R2OUT
FORCEOFF
FORCEON
READY
5kΩ
R2IN
5kΩ
RS-232
INPUTS
GND
Functional Diagrams continued at end of data sheet.
Ordering Information/Selector Guide
PART
DRIVERS/
RECEIVERS
MAX13234EEUP+
2x2
MAX13234EETP+
2x2
MAX13235EEUP+
2x2
MAX13235EETP+
2x2
MAX13236EETE+
1x1
MAX13237EETE+
1x1
+Denotes a lead-free/RoHS-compliant package.
*EP = Exposed pad.
MAXIMUM
DATA RATE
250kbps
250kbps
3Mbps
3Mbps
250kbps
3Mbps
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
20 TSSOP
20 TQFN-EP*
20 TSSOP
20 TQFN-EP*
16 TQFN-EP*
16 TQFN-EP*
19-4343; Rev 1; 12/14



Maxim Integrated MAX13235E
MAX13234E–MAX13237E
3Mbps RS-232 Transceivers with
Low-Voltage Interface, ±15kV
HBM ESD
Absolute Maximum Ratings
(All voltages referenced to GND.)
VCC ...................................................................... -0.3V to +6.0V
VL ......................................................................... -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
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.
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.
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)
PARAMETER
SYMBOL
CONDITIONS
Supply Voltage
VCC
Logic Supply Voltage
VL
FORCEOFF = FORCEON = VL, no loads
VCC Supply Current
VL = 0V
ICC AutoShutDown Plus, FORCEOFF = VL,
FORCEON = GND, all R_IN idle, all T_IN
idle.
VCC Shutdown Current
ICCSH FORCEOFF = GND
VL Supply Current
IL VCC = +5.5V
VL Shutdown Current
ILSH FORCEOFF = GND
LOGIC INPUTS (T_IN, FORCEON, FORCEOFF, Referred to VL)
Input Threshold Low
VIL Tested at room temperature only
Input Threshold High
VIH Tested at room temperature only
Input Hysteresis
Input Leakage Current
RECEIVER OUTPUTS (READY)
Output-Voltage Low
Output-Voltage High
VOL
VOH
IOUT = 0.8mA
IOUT = -0.5mA
MIN TYP MAX UNITS
3 5.5 V
1.62
VCC
0.3 1
V
mA
1 10
µA
1 10
1 10 µA
1 10 µA
1 10 µA
2/3 x VL
60
±0.01
1/3 x VL
±1
V
V
mV
µA
VL - 0.6 VL - 0.1
0.4
V
V
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Maxim Integrated | 2



Maxim Integrated MAX13235E
MAX13234E–MAX13237E
3Mbps 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)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
RECEIVER INPUTS
Input-Voltage Range
-25 +25 V
Input Threshold Low
Input Threshold High
Input Hysteresis
VIL TA = +25°C
VIH TA = +25°C
VCC = +3.3V
VCC = +5V
VCC = +3.3V
VCC = +5V
0.6 1.2
0.8 1.5
1.5 2.4
1.8 2.4
0.5
V
V
V
Input Resistance
3 5 7 kΩ
TRANSMITTER OUTPUTS
Output-Voltage Swing
All transmitter outputs loaded with 3kΩ to
GND
±5 ±5.4
V
Output Resistance
VCC = V+ = V- = 0V, transmitter outputs =
±2V
300 10M
Ω
Output Short-Circuit Current
-60 +60 mA
Output Leakage Current
VCC = 0V or +3V to +5.5V, VOUT = ±12V,
transmitters disabled
AutoShutdown Plus (FORCEON = GND, FORCEOFF = VL)
Receiver Input Threshold Valid
Level
Positive threshold, Figure 1
Negative threshold, Figure 1
-25
-2.7
+25 µA
2.7 V
V
Receiver Input Threshold
Invalid Level
Figure 1
-0.3
+0.3
V
Receiver or Transmitter Edge-to-
Transmitters Enabled
tWU VL = 5V, Figure 1 (Note 3)
100 µs
Receiver or Transmitter Edge-to-
Transmitters Shutdown
tAUTOSHDN VL = 5V, Figure 1 (Note 3)
15 30 60
s
TIMING CHARACTERISTICS (MAX13234E/MAX13236E)
Maximum Data Rate
RL = 3kΩ, CL = 1000pF, one transmitter
switching
250
kbps
Receiver Propagation Delay
Transmitter Skew
Receiver Skew
tRPHL,
tRPLH
|tTPHL -
tTPLH|
|tRPHL -
tRPLH|
CL = 150pF, Figures 2, 3
Figures 4, 5 (Note 4)
Figures 2, 3
0.15 µs
100 ns
50 ns
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Maxim Integrated | 3





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