MAX335 Serial Controlled, 8-Channel SPST Switch General Description Features The MAX335 analog switch with serial digital interface 8 Separately Controlled SPST Switches offers eight separately controlled single-pole-single-throw SPI-Compatible Serial Interface (SPST) switches. All switches conduct equally in either Accepts 15V Analog Swings direction, and on-resistance (100) is constant over the analog signal range. Multiple Devices Can Be Daisy-Chained These CMOS switches can operate continuously with Ordering Information power supplies ranging from 4.5V to 20V and handle rail-to-rail analog signals. Upon power-up, all switches are PART TEMP RANGE PIN-PACKAGE off, and the internal serial and parallel shift registers are MAX335CNG 0C to +70C 24 Narrow Plastic DIP reset to zero. The MAX335 is equivalent to two DG211 quad switches but controlled by a serial interface. MAX335CWG 0C to +70C 24 Wide SO The interface is compatible with the Motorola SPI interface MAX335C/D 0C to +70C Dice* standard. Functioning as a shift register, this serial interface MAX335ENG -40C to +85C 24 Narrow Plastic DIP allows data (at DIN) to be locked in synchronous with the rising edge of clock (SCLK). The shift registers output MAX335EUG -40C to +85C 24 TSSOP (DOUT) enables several MAX335s to be daisy chained. MAX335EWG -40C to +85C 24 Wide SO MAX335MRG -55C to +125C 24 Narrow CERDIP** Applications Serial Data Acquisition and Process Control *Contact factory for dice specifications. Avionics **Contact factory for availability and processing to MIL-STD-883. Signal Routing Networking Pin Configuration NO0 NO7 TOP VIEW + SCLK 1 24 CS V+ 2 23 VL COM0 COM7 DIN 3 22 DOUT GND 4 21 V- MAX335 PARALLEL REGISTER AND TRANSLATOR NO0 5 20 NO7 COM0 6 19 COM7 8-BIT SHIFT REGISTER DOUT D IN NO1 7 18 NO6 COM1 8 17 COM6 NO2 9 16 NO5 V +5V TRANSLATOR L COM2 10 15 COM5 MAX335 NO3 11 14 NO4 SCLK CLOCK TRANSLATOR COM3 12 13 COM4 LATCH DIP/SO CS CS TRANSLATOR 19-0220 Rev 4 7/17MAX335 Serial Controlled, 8-Channel SPST Switch Absolute Maximum Ratings Voltages Referenced to V- Continuous Power Dissipation (T = +70C) (Note 1) A V+ ......................................................................................44V Narrow Plastic DIP GND ...................................................................................25V (derate 13.33mW/C above +70C) ..........................1067mW V ................................................(GND - 0.3V) to (V+ + 0.3V) Wide SO (derate 11.76mW/C above +70C) .............941mW L SCLK, CS, DIN, DOUT, NO , COM ...........V- -2V to V+ +2V Narrow CERDIP (derate 12.50mW/C above +70C) ...1000mW or 30mA, whichever occurs first TSSOP (derate 12.2mW/C above +70C) ........................30mA Continuous Current (any terminal) .....................................30mA Operating Temperature Ranges Peak Current, NO or COM MAX335C ..........................................................0C to +70C (pulsed at 1ms, 10% duty cycle MAX) ...........................00mA MAX335E ...................................................... -40C to +85C MAX335MRG ................................................... -55C to +125C Storage Temperature Range ............................ -65C to +160C Note 1: All leads are soldered or welded to PC boards. Lead Temperature (soldering, 10sec) .............................+300C 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 = +5V 10%, V+ = 15V, V- = -15V, T = T to T , unless otherwise noted. Typical values are at T = +25C.) L A MIN MAX A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS SWITCH Analog Signal Range V T = T to T -15 15 V ANALOG A MIN MAX T = +25C 100 150 V = 10V, A COM On-Resistance R ON I = 1mA NO 200 T = +25C -1 0.002 1 A V = -14V, COM V = +14V NO -20 20 NO Off-Leakage Current I nA NO(OFF) T = +25C -1 0.002 1 V = -14V, A COM V = +14V NO -20 20 T = +25C -1 0.002 1 V = -14V, A COM V = +14V NO -20 20 COM Off-Leakage Current I nA COM(OFF) T = +25C -1 0.002 1 A V = -14V, COM V = +14V NO -20 20 T = +25C -2 0.01 2 A V = V = +14V COM NO -20 40 COM On-Leakage Current I nA COM(ON) T = +25C -2 0.01 2 A V = V = -14V COM NO -20 40 DIGITAL I/O V = +5V 2.4 L DIN, SCLK, CS Input Logic V V IH Threshold High V = +15V 11 L V = +5V 0.8 L DIN, SCLK, CS Input Logic V V IL Threshold Low V = +15V 3 L V , V , V = 2.4V -1 0.03 1 DIN SCLK CS DIN, SCLK, CS Input Current I A INH Threshold High V = +15V, V , V , V = 11V -1 0.03 1 L DIN SCLK CS V , V , V = 0.8V -1 0.03 1 DIN SCLK CS DIN, SCLK, CS Input Current I A INL Threshold Low V = +15V, V , V , V = 3V -1 0.03 1 L DIN SCLK CS DOUT Output Voltage V I = 0.8mA 3.5 V V DOUT DOUT L Logic High Maxim Integrated 2 www.maximintegrated.com