MAX3316MAX3319 19-1751 Rev 0 6/00 2.5V, 1A, 460kbps, RS-232-Compatible Transceivers General Description Features The MAX3316MAX3319 transceivers have a proprietary AutoShutdown Plus (MAX3318/MAX3319) low-dropout transmitter output stage enabling RS-232- 300A Operating Supply Current compatible performance from +2.25V to +3.0V with a dual-charge pump. These devices require only four 1A Low-Power Shutdown with Receivers Active 0.1F capacitors, and are guaranteed to operate at data Guaranteed 460kbps Data Rate rates up to 460kbps. Guaranteed 4V/s Slew Rate The MAX3318/MAX3319 achieve a 1A supply current RS-232 Compatible Down to 2.25V using Maxims revolutionary AutoShutdown Plus fea- ture. These devices automatically enter a low-power shutdown mode when the RS-232 cable is disconnected Ordering Information or the transmitters of the connected peripherals are inac- PART TEMP. RANGE PIN-PACKAGE tive for more than 30 seconds. They turn on again when MAX3316CUP 0C to +70C 20 TSSOP they sense a valid transition at any transmitter or receiver input. AutoShutdown Plus saves power without changes MAX3316CAE 0C to +70C 16 SSOP to the existing BIOS or operating system. The MAX3318 MAX3316EUP -40C to +85C 20 TSSOP is a 2-Tx/2-Rx device while the MAX3319 is a 1-Tx/1-Rx MAX3316EAE -40C to +85C 16 SSOP device. These devices also feature a logic-level output Ordering Information continued at end of data sheet. (READY) that asserts when the charge pump is regulat- ing and the device is ready to begin transmitting. Typical Application Circuits The MAX3316/MAX3317 are 2-Tx/2-Rx transceivers. The MAX3317 features a 1A shutdown mode that can be +2.5V entered by driving SHDN low. The MAX3317s receivers 15 remain active while in shutdown mode, allowing external 0.1 F C BYPASS V CC devices such as modems to be monitored using only 3 2 C1+ V+ 1A supply current. C1 C3 0.1 F 4 0.1 F C1- These devices are available in space-saving packages: MAX3319 5 7 MAX3316 (16-pin SSOP and 20-pin TSSOP), MAX3317/ C2+ V- C4 C2 MAX3318 (20-pin SSOP and 20-pin TSSOP), and 0.1 F 6 0.1 F C2- MAX3319 (16-pin SSOP). RS-232- 11 T1IN T1OUT 13 CMOS COMPATIBLE Applications INPUT OUTPUT RS-232- Palmtop Computers 9 R1OUT R1IN 8 CMOS COMPATIBLE OUTPUT Hand-Held Instruments INPUT 5k Pagers Cellular Phones TO POWER- 1 READY INVALID 10 AutoShutdown MANAGEMENT GPS Plus UNIT Handy Terminals FORCEOFF 12 FORCEON 16 V CC GND Hand-Held Electronic Books 14 AutoShutdown Plus is a trademark of Maxim Integrated Products. Typical Application Circuits continued at end of data sheet. Pin Configurations appear at end of data sheet. Selector Guide NO. OF DRIVERS/ GUARANTEED AutoShutdown PART READY OUTPUT SHUTDOWN RECEIVERS DATA RATE (kbps) Plus MAX3316 2/2 460 MAX3317 2/2 460 MAX3318 2/2 460 MAX3319 1/1 460 Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com.2.5V, 1A, 460kbps, RS-232-Compatible Transceivers ABSOLUTE MAXIMUM RATINGS V to GND..............................................................-0.3V to +6V Short-Circuit Duration, T OUT to GND.......................Continuous CC V+ to GND (Note 1)..................................................-0.3V to +7V Continuous Power Dissipation (T = +70C) A V- to GND (Note 1) ...................................................-7V to +0.3V 16-Pin SSOP (derate 7.14mW/C above +70C).........571mW V+ + V- (Note 1) .................................................................+13V 20-Pin SSOP (derate 8.00mW/C above +70C).........640mW Input Voltages 20-Pin TSSOP (derate 7.00mW/C above +70C).......559mW T IN, EN, SHDN, FORCEON, Operating Temperature Ranges FORCEOFF to GND ..................................................-0.3V to +6V MAX331 C .....................................................0C to +70C R IN to GND .....................................................................25V MAX331 E ..................................................-40C to +85C Output Voltages Storage Temperature Range .............................-65C to +150C T OUT to GND...............................................................13.2V Die Temperature ..............................................................+150C R OUT, INVALID, READY to GND ..........-0.3V to (V + 0.3V) Lead Temperature (soldering, 10s) .................................+300C CC 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 (V = +2.25V to +3.0V, C1C4 = 0.1F, T = T to T , unless otherwise noted. Typical values are at V = +2.5V, CC A MIN MAX CC T = +25C.) A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS DC CHARACTERISTICS (V = +2.5V, T = +25C) CC A FORCEON = GND, FORCEOFF = V , CC AutoShutdown Plus Supply all R IN idle, all T IN idle 110 A Current (MAX3318/MAX3319) SHDN = GND (MAX3317), FORCEOFF = GND Shutdown Supply Current 110 A (MAX3318/MAX3319) SHDN = V , no load (MAX3317), CC Supply Current FORCEON = FORCEOFF = V , no load 0.3 1 mA CC (MAX3318/MAX3319) LOGIC INPUTSLOGIC INPUTS Input Logic Threshold Low T IN, EN, SHDN, FORCEON, FORCEOFF 0.3 V V CC Input Logic Threshold High 0.7 V V T IN, EN, SHDN, FORCEON, FORCEOFF CC Transmitter Input Hysteresis 0.3 V Input Leakage Current T IN, EN, SHDN, FORCEON, FORCEOFF 0.01 1 A RECEIVER OUTPUTSRECEIVER OUTPUTS Output Leakage Current 0.05 10 A EN = V (MAX3317), receivers disabled CC 0.1 V Output Voltage Low I = 0.5mA V OUT CC Output Voltage High I = -0.5mA 0.9 V V OUT CC RECEIVER INPUTSRECEIVER INPUTS Input Voltage Range -25 +25 V 0.3 V Input Threshold Low T = +25C V A CC Input Threshold High T = +25C 0.7 V V A CC Input Hysteresis 0.3 V Input Resistance T = +25C 35 7 k A TRANSMITTER OUTPUTSTRANSMITTER OUTPUTS All transmitter outputs loaded with 3k to Output Voltage Swing 3.7 4 V ground 2 MAX3316MAX3319