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Part: MAX3243ECAI
Category:
Power Management
-> Protection and Isolation
Description: MAX3221E, MAX3223E, MAX3243E ±15kV ESD-Protected, 1µA, 3.0V to 5.5V, 250kbps RS-232 Transceivers With AutoShutdown™
Company: Maxim Integrated Products
Datasheet: Download MAX3243ECAI datasheet File size : 259 kB
Request For quote: Find where to buy MAX3243ECAI
Datasheet text preview:
19-1283; Rev 4; 1/02
±15kV ESD-Protected, 1µA, 3.0V to 5.5V, 250kbps, RS-232 Transceivers with AutoShutdown
General Description
The MAX3221E/MAX3223E/MAX3243E are 3V-powered EIA/TIA-232 and V.28/V.24 communications interfaces with automatic shutdown/wakeup features, high datarate capabilities, and enhanced electrostatic discharge (ESD) protection. All transmitter outputs and receiver inputs are protected to ±15kV using IEC 1000-4-2 AirGap Discharge, to ±8kV using IEC 1000-4-2 Contact Discharge, and to ±15kV using the Human Body Model. T h e MAX3221E/MAX3223E/MAX3243E achieve a 1 µ A supply current with Maxim's revolutionary A u t o S h u t d o w n TM feature. They save power without changes to the existing BIOS or operating system by entering low-power shutdown mode when the RS-232 cable is disconnected, or when the transmitters of the connected peripherals are off. The transceivers have a proprietary low-dropout transmitter output stage, delivering true RS-232 performance from a +3.0V to +5.5V supply with a dual charge pump. The charge pump requires only four small 0.1µF capacitors for operation from a +3.3V supply. Each device is guaranteed to run at data rates of 250kbps while maintaining RS-232 output levels. The MAX3221E contains just one driver and one receiver, making it the smallest single-supply RS-232 transceiver. The MAX3223E has two drivers and two receivers. The MAX3243E is a complete 3-driver/5-receiver serial port ideal for notebook or subnotebook computers. It also includes two noninverting receiver outputs that are always active, allowing external devices to be monitored without forward biasing the protection diodes in circuitry that may be powered down. The MAX3221E, MAX3223E, and MAX3243E are available in space-saving SSOP and TSSOP packages.
Features
o ESD Protection for RS-232 I/O Pins ±15kV--Human Body Model ±8kV--IEC 1000-4-2, Contact Discharge ±15kV--IEC 1000-4-2, Air-Gap Discharge o Latchup Free o 1µA Supply Current When Port Is Disconnected or Inactive o 250kbps Guaranteed Data Rate o 6V/µs Guaranteed Slew Rate o Meets EIA/TIA-232 Specifications Down to 3.0V o Smallest Single-Supply RS-232 Transceiver (MAX3221E) o Guaranteed Mouse Driveability (MAX3243E) o Small 0.1µF Capacitors
MAX3221E/MAX3223E/MAX3243E
Ordering Information
PART MAX3221ECAE MAX3221EEAE MAX3223ECPP MAX3223ECAP MAX3223ECUP MAX3223EEPP MAX3223EEAP MAX3223EEUP MAX3243ECWI MAX3243ECAI MAX3243ECUI MAX3243EEWI MAX3243EEAI MAX3243EEUI TEMP. RANGE 0°C to +70°C -40°C to +85°C 0°C to +70°C 0°C to +70°C 0°C to +70°C -40°C to +85°C -40°C to +85°C -40°C to +85°C 0°C to +70°C 0°C to +70°C 0°C to +70°C -40°C to +85°C -40°C to +85°C -40°C to +85°C PIN-PACKAGE 16 SSOP 16 SSOP 20 Plastic DIP 20 SSOP 20 TSSOP 20 Plastic DIP 20 SSOP 20 TSSOP 28 Wide SO 28 SSOP 28 TSSOP 28 Wide SO 28 SSOP 28 TSSOP
Applications
Notebook, Subnotebook, and Palmtop Computers Cellular Phones Battery-Powered Equipment Hand-Held Equipment Peripherals Printers
Selector Guide
PART MAX3221E MAX3223E MAX3243E NO. OF VCC RANGE DRIVERS/ (V) RECEIVERS 1/1 2/2 3/5 +3.0 to +5.5 +3.0 to +5.5 +3.0 to +5.5 AutoShutdown
Pin Configurations appear at end of data sheet. Typical Operating Circuits appear at end of data sheet. AutoShutdown is a trademark of Maxim Integrated Products, Inc. Covered by U.S. Patent numbers 4,636,930; 4,679,134; 4,777,577; 4,797,899; 4,809,152; 4,897,774; 4,999,761; 5,649,210; and other patents pending. ________________________________________________________________ Maxim Integrated Products 1
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.
±15kV ESD-Protected, 1µA, 3.0V to 5.5V, 250kbps, RS-232 Transceivers with AutoShutdown MAX3221E/MAX3223E/MAX3243E
ABSOLUTE MAXIMUM RATINGS
VCC to GND .....-0.3V to +6V V+ to GND (Note 1) ........-0.3V to +7V V- to GND (Note 1) .........+0.3V to -7V V+ + |V-| (Note 1) ........+13V Input Voltages T_IN, EN, FORCEON, FORCEOFF to GND ...-0.3V to +6V R_IN to GND ....±25V Output Voltages T_OUT to GND.......±13.2V R_OUT, R2OUTB, INVALID to GND .........-0.3V to (VCC + 0.3V) Short-Circuit Duration T_OUT to GND .........Continuous Continuous Power Dissipation (TA = +70°C) 16-Pin SSOP (derate 7.14mW/°C above +70°C) ..571mW 20-Pin Plastic DIP (derate 11.11mW/°C above +70°C)....889mW 20-Pin SSOP (derate 8.00mW/°C above +70°C) ..640mW 20-Pin TSSOP (derate 10.9mW/°C above +70°C) .........879mW 28-Pin SSOP (derate 9.52mW/°C above +70°C)...762mW 28-Pin TSSOP (derate 12.8mW/°C above +70°C) .......1026mW Operating Temperature Ranges MAX32_ _EC_ _ ....0°C to +70°C MAX32_ _EE_ _........-40°C to +85°C Storage Temperature Range .....-65°C to +160°C Lead Temperature (soldering, 10s) .........+300°C
Note 1: V+ and V- can have maximum magnitudes of 7V, but their absolute difference cannot exceed 13V.
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 = +3.0V to +5.5V, C1C4 = 0.1µF (Note 2), TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) PARAMETER SYMBOL CONDITIONS FORCEON = GND, FORCEOFF = VCC, all R_IN open FORCEOFF = GND, all R_IN = GND FORCEON = FORCEOFF = VCC, no load T_IN, EN, FORCEON, FORCEOFF T_IN, EN, FORCEON, FORCEOFF VCC = 3.3V VCC = 5.0V 2.0 2.4 0.5 T_IN, EN, FORCEON, FORCEOFF R_OUT receivers disabled IOUT = 1.6mA IOUT = -1.0mA Positive threshold Negative threshold -2.7 -0.3 0.3 0.4 VCC - 0.6 VCC - 0.6 VCC - 0.1 2.7 ±0.01 ±0.05 ±1 ±10 0.4 MIN TYP MAX UNITS
DC CHARACTERISTICS (VCC = 3.3V or 5.0V, TA = +25°C) Supply Current, AutoShutdown Supply Current, Shutdown Supply Current, AutoShutdown Disabled LOGIC INPUTS Input Logic Threshold Low Input Logic Threshold High Transmitter Input Hysteresis Input Leakage Current RECEIVER OUTPUTS Output Leakage Current Output Voltage Low Output Voltage High µA V V 0.8 V V V µA 1.0 1.0 0.3 10 10 1 µA µA mA
AutoShutdown (FORCEON = GND, FORCEOFF = VCC) Receiver Input Threshold to INVALID Output High Receiver Input Threshold to INVALID Output Low INVALID Output Voltage Low INVALID Output Voltage High Figure 5a Figure 5a IOUT = 1.6mA IOUT = -1.0mA V V V V
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±15kV ESD-Protected, 1µA, 3.0V to 5.5V, 250kbps, RS-232 Transceivers with AutoShutdown
ELECTRICAL CHARACTERISTICS (continued)
(VCC = +3.0V to +5.5V, C1C4 = 0.1µF (Note 2), TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) PARAMETER Receiver Positive or Negative Threshold to INVALID High Receiver Positive or Negative Threshold to INVALID Low Receiver or Transmitter Edge to Transmitters Enabled RECEVoltage Range Input IVER INPUTS Input Voltage Range Input Threshold Low Input Threshold High Input Hysteresis Input Resistance TRANSMITTER OUTPUTS Output Voltage Swing Output Resistance Output Short-Circuit Current Output Leakage Current MOUSE DRIVEABILITY (MAX3243E) T1IN = T2IN = GND, T3IN = VCC, T3OUT loaded with 3k to GND, T1OUT and T2OUT loaded with 2.5mA each IEC 1000-4-2 Air-Gap Discharge R_IN, T_OUT IEC 1000-4-2 Contact Discharge Human Body Model VOUT = ±12V, VCC = 0 or 3V to 5.5V, transmitters disabled All transmitter outputs loaded with 3k to ground VCC = V+ = V- = 0, TOUT = ±2V ±5 300 ±5.4 10M ±60 ±25 V mA µA 3 TA = +25°C TA = +25°C VCC = 3.3V VCC = 5.0V VCC = 3.3V VCC = 5.0V SYMBOL tINVH tINVL tWU CONDITIONS VCC = 5V, Figure 5b VCC = 5V, Figure 5b VCC = 5V, Figure 5b -25 -25 0.6 0.8 1.2 1.5 1.5 1.8 0.5 5 7 2.4 2.4 MIN TYP 1 30 100 25 25 MAX UNITS µs µs µs V V V V V k
MAX3221E/MAX3223E/MAX3243E
Transmitter Output Voltage
±5.0
V
ESD PROTECTION ±15 ±8 ±15 kV kV
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