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Part: MAX3223EPP
Category:
Interface and Interconnect
Description: MAX3221, MAX3223, MAX3243 1µA Supply Current, True +3V to +5.5V RS-232 Transceivers With AutoShutdown™
Company: Maxim Integrated Products
Datasheet: Download MAX3223EPP datasheet File size : 259 kB
Request For quote: Find where to buy MAX3223EPP
Datasheet text preview:
19-0306; Rev 7; 10/02
1µA Supply-Current, True +3V to +5.5V RS-232 Transceivers with AutoShutdown
_______________General Description
The MAX3221/MAX3223/MAX3243 achieve 1µA supply current with Maxim's revolutionary AutoShutdownTM feature. When the MAX3221/MAX3223/MAX3243 do not sense a valid signal level on their receiver inputs, the on-board power supply and drivers shut down. This occurs if the RS-232 cable is disconnected or if the transmitters of the connected peripheral are turned off. The system turns on again when a valid level is applied to any RS-232 receiver input. As a result, the system saves power without changes to the existing BIOS or operating system. The MAX3221/MAX3223/MAX3243 transceivers are 3Vpowered EIA/TIA-232 and V.28/V.24 communications interfaces intended for notebook computer applications. 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. A guaranteed data rate of 120kbps provides compatibility with popular software for communicating with personal computers. The MAX3221/MAX3223/MAX3243 require only 0.1µF capacitors in 3.3V operation, and can operate from input voltages ranging from +3.0V to +5.5V. They are ideal for 3.3V-only systems, mixed 3.3V and 5.0V systems, or 5.0V-only systems that require true RS-232 performance. The MAX3221 is a 1-driver/1-receiver 16-pin SSOP version of the 20-pin MAX3223 (2-driver/2-receiver). The MAX3243 3-driver/5-receiver, complete serial port is i d e a l for notebook or subnotebook computers. The MAX3243 includes one complementary always-active receiver. This receiver can monitor an external device (such as a modem) in shutdown, without forward biasing the protection diodes in a UART that may have VCC completely removed.
____________________________Features
o 1µA Supply Current Achieved with AutoShutdown o Small 0.1µF Capacitors o True RS-232 Operation from VCC = +3.0V to +5.5V o Meets EIA/TIA-562 Specifications Down to 2.7V o Guaranteed 120kbps Data Rate o 6V/µs Min Guaranteed Slew Rate o Smallest Single-Supply RS-232 Transceiver (MAX3221) o Guaranteed Mouse Driveability (MAX3243) o Small TSSOP Package (MAX3223/MAX3243)
MAX3221/MAX3223/MAX3243*
________________________Applications
Notebook, Subnotebook, and Palmtop Computers Battery-Powered Equipment Hand-Held Equipment Peripherals Printers
______________Ordering Information
PART MAX3221CAE MAX3221CUE MAX3221EAE MAX3221EUE MAX3223CPP MAX3223CAP MAX3223CUP MAX3223EPP MAX3223EAP MAX3223EUP MAX3243CWI MAX3243CAI MAX3243CUI MAX3243EWI MAX3243EAI MAX3243EUI TEMP RANGE 0°C to +70°C 0°C to +70°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 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 TSSOP 16 SSOP 16 TSSOP 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
_____________________Selector Guide
PART MAX3221 MAX3223 MAX3243 Tx 1 2 3 Rx 1 2 5 VCC RANGE (V) AutoShutdown 3.0 to 5.5 3.0 to 5.5 3.0 to 5.5 Yes Yes Yes
Pin Configurations appear at end of data sheet. Typical Operating Circuits appear at end of data sheet. Future product--contact factory for availability. AutoShutdown is a trademark of Maxim Integrated Products.
* 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; 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.
1µA Supply-Current, True +3V to +5.5V RS-232 Transceivers with AutoShutdown MAX3221/MAX3223/MAX3243
ABSOLUTE MAXIMUM RATINGS
VCC .........-0.3V to +6V V+ (Note 1) ......-0.3V to +7V V- (Note 1) ......+0.3V to -7V V+ + |V-| (Note 1)........+13V Input Voltages T_IN, FORCEOFF, FORCEON, EN (MAX3223) ......-0.3V to +6V R_IN ..±25V Output Voltages T_OUT ...........±13.2V R_OUT, INVALID .....-0.3V to (VCC + 0.3V) Short-Circuit Duration T_OUT ....Continuous Continuous Power Dissipation (TA = +70°C) 16-Pin SSOP (derate 7.14mW/°C above +70°C) ..571mW 16-Pin TSSOP (derate 6.70mW/°C above +70°C) .........533mW 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 DIP (derate 7.00mW/°C above +70°C).....559mW 28-Pin Wide SO (derate 12.50mW/°C above +70°C) ...1W 28-Pin SSOP (derate 9.52mW/°C above +70°C) ..762mW 28-Pin TSSOP (derate 8.70mW/°C above +70°C) .........696mW Operating Temperature Ranges MAX32_ _C_ _.......0°C to +70°C MAX32_ _E_ _ ....-40°C to +85°C Storage Temperature Range .....-65°C to +150°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 DC CHARACTERISTICS Supply Current, AutoShutdown Supply Current, Shutdown Supply Current, AutoShutdown Disabled Input Logic Threshold Low Input Logic Threshold High Input Leakage Current Output Leakage Current Output Voltage Low Output Voltage High All R_IN open, FORCEON = GND, VCC = 3.3V FORCEOFF = VCC or 5.0V, FORCEOFF = GND TA = +25°C FORCEON = FORCEOFF = V ,
CC
CONDITIONS
MIN
TYP
MAX
UNITS
1.0 1.0 0.3
10 10 1.0
µA µA mA
no load T_IN, FORCEON, FORCEOFF, EN (MAX3223) T_IN, EN, FORCEON, FORCEOFF T_IN, EN, FORCEON, FORCEOFF Receivers disabled IOUT = 1.6mA IOUT = -1.0mA Positive threshold Negative threshold -2.7 -0.3 VCC - 0.6 VCC = 3.3V VCC = 5.0V 2.0 2.4
LOGIC INPUTS AND RECEIVER OUTPUTS 0.8 V V ±0.01 ±0.05 ±1.0 ±10 0.4 VCC - 0.1 2.7 µA µA V V
AUTOSHUTDOWN (FORCEON = GND, FORCEOFF = VCC) Receiver Input Thresholds to Transmitters Enabled Receiver Input Thresholds to Transmitters Disabled INVALID Output Voltage Low INVALID Output Voltage High Receiver Threshold to Transmitters Enabled (tWU) Receiver Positive or Negative Threshold to INVALID High (tINVH) Receiver Positive or Negative Threshold to INVALID Low (tINVL) 2 Figure 5 V V V V 250 1 30 µs µs µs
1µA supply current, Figure 5 IOUT = 1.6mA IOUT = -1.0mA Figure 5 Figure 5 Figure 5
0.3 0.4
VCC - 0.6
_______________________________________________________________________________________
1µA Supply-Current, True +3V to +5.5V 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 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 VOUT = ±12V, VCC = 0V or 3.0V to 5.5V, transmitters disabled All transmitter outputs loaded with 3k to ground VCC = V+ = V- = 0V, transmitter output = ±2V ±5.0 300 ±5.4 10M ±35 ±60 ±25 V mA µA TA = +25°C 3 TA = +25°C TA = +25°C VCC = 3.3V VCC = 5.0V VCC = 3.3V VCC = 5.0V -25 0.6 0.8 1.2 1.5 1.5 1.8 0.3 5 7 2.4 2.4 25 V V V V k CONDITIONS MIN TYP MAX UNITS
MAX3221/MAX3223/MAX3243
MOUSE DRIVEABILITY (MAX3243) Transmitter Output Voltage TIMING CHARACTERISTICS Maximum Data Rate Receiver Propagation Delay Receiver Output Enable Time Receiver Output Disable Time Transmitter Skew Receiver Skew RL = 3k, CL = 1000pF, one transmitter switching Receiver input to receiver output, CL = 150pF Normal operation Normal operation tPHL - tPLH tPHL - tPLH VCC = 3.3V, RL = 3k to 7k, TA = +25°C, measured from +3V to -3V or -3V to +3V MAX3221/MAX3223 MAX3243 MAX3221/MAX3223 MAX3243 CL = 200pF to 2500pF 4 tPHL tPLH 120 235 0.3 0.3 200 200 200 200 100 100 8.0 500 30 V/µs CL = 200pF to 1000pF 6 30 1000 kbps µs ns ns ns ns T1IN = T2IN = GND, T3IN = VCC, T3OUT loaded with 3k to GND, T1OUT and T2OUT loaded with 2.5mA each ±5 V
Transition-Region Slew Rate
Note 2: C1C4 = 0.1µF, tested at 3.3V ±10%. C1 = 0.047µF, C2C4 = 0.33µF, tested at 5.0V ±10%.
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