MAX4645/MAX4646 19-1653 Rev 2 2/04 Fast, Low-Voltage, 2.5, SPST, CMOS Analog Switches General Description Features The MAX4645/MAX4646 single-pole, single-throw (SPST) +1.8V to +5V Single-Supply Operation analog switches feature a 2.5 typical on-resistance Guaranteed R ON (R ) from a +5V supply. R is flat (0.4 max) over the ON ON 2.5 max (5V supply) specified signal range. Each switch can handle Rail-to- 3.5 max (3V supply) Rail analog signals. Off-leakage current is 0.25nA max at 1.8V Operation +25C. These analog switches are ideal in low-distortion R 30 typ Over Temperature ON applications and are the preferred solution over mechani- t 40ns typ, t 20ns typ ON OFF cal relays in automated test equipment or applications Low R Flatness: 0.4 max ON where current switching is required. They have low power Guaranteed Low Leakage Currents requirements, require less board space, and are more 0.25nA at +25C reliable than mechanical relays. Rail-to-Rail Output Capability These switches operate from a +1.8V to +5V single sup- TTL/CMOS-Logic Compatible ply, making them ideal for use in battery-powered applica- tions. The MAX4645/MAX4646 have fast switching speeds -75dB Off-Isolation at 1MHz of 12ns turn-on time (t ) and 8ns turn-off time (t ). ON OFF Low Distortion: 0.014% typ The MAX4645 is a normally open (NO) switch, and the MAX4646 is a normally closed (NC) switch. Both are available in 5-pin SOT23, 6-pin SOT23, and 8-pin MAX Ordering Information packages. PIN- TOP PART TEMP RANGE Applications PACKAGE MARK MAX4645EUK-T -40C to +85C 5 SOT23-5 ADOB Battery-Powered Systems MAX4645EUT-T -40C to +85C 6 SOT23-6 AAHL Audio and Video Signal Routing MAX4645EUA -40C to +85C 8 MAX Low-Voltage Data-Acquisition Systems MAX4646EUK-T -40C to +85C 5 SOT23-5 ADOC MAX4646EUT-T -40C to +85C 6 SOT23-6 AAHM Sample-and-Hold Circuits MAX4646EUA -40C to +85C 8 MAX Communications Circuits Relay Replacement Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd. Pin Configurations/Functional Diagrams/Truth Tables TOP VIEW PIN 5 5 4 COM 1 5 V+ COM 1 5 V+ XYZA NO 2 NC 2 123 GND 3 4 IN GND IN 3 4 MAX4645 MAX4646 MAX/SO/DIP MAX/SO/DIP NOTE: SOT23-5 PACKAGE HAS LETTERING NEAREST PIN 5. SOT23-5 SOT23-5 SWITCH STATE INPUT MAX4645 MAX4646 ON 0 OFF Pin Configurations/Functional Diagrams/ 1 ON OFF Truth Tables continued at end of data sheet. SWITCHES SHOWN FOR LOGIC 0 INPUT. 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.Fast, Low-Voltage, 2.5, SPST, CMOS Analog Switches ABSOLUTE MAXIMUM RATINGS V+, V to GND...........................................................-0.3 to +6V Continuous Power Dissipation (T = +70C) IN A COM, NO, NC to GND (Note 1)....................-0.3V to (V+ + 0.3V) 5-Pin SOT23 (derate 7.1mW/C above+70C)............571mW Continuous Current (any terminal)....................................50mA 6-Pin SOT23 (derate 8.7mW/C above +70C)...........696mW Peak Current COM, NO, NC 8-Pin MAX (derate 4.1mW/C above+70C) .............330mW (pulsed at 1ms 10% duty cycle)................................100mA Operating Temperature Range ...........................-40C to +85C Storage Temperature Range .............................-65C to +150C Lead Temperature (soldering, 10s) .................................+300C Note 1: Signals on NO, NC, or COM, exceeding V+ or GND are clamped by internal diodes. Limit forward current to maximum current rating. 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 CHARACTERISTICSSingle +5V Supply (V+ = 4.5V to 5.5V, V = 2.4V, V = 0.8V, T = T to T , unless otherwise specified.) (Notes 2, 3) IH IL A MIN MAX PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS ANALOG SWITCH V , COM Input Voltage Range 0V+ V V , V NO NC I = 10mA, COM T = +25C 1.5 2.5 A COM to NO or NC R V or V = 0 to V+, ON NO NC On-Resistance T = T to T 3 V+ = 4.5V A MIN MAX I = 10mA, COM T = +25C 0.1 0.4 A On-Resistance Flatness R V or V = 0 to V+, FLAT(ON) NO NC (Note 4) T = T to T 0.6 V+ = 4.5V A MIN MAX V = 1V, 4.5V COM T = +25C -0.25 0.01 0.25 A Off-Leakage Current I , NO(OFF) V or V = 4.5V, 1V nA NO NC (NO or NC) (Notes 5, 6) I NC(OFF) T = T to T -0.35 0.35 V+ = 5.5V A MIN MAX V = 1V, 4.5V COM T = +25C -0.25 0.01 0.25 A COM Off-Leakage Current I V or V = 4.5V, 1V nA COM(OFF) NO NC (Notes 5, 6) T = T to T -0.35 0.35 A MIN MAX V+ = 5.5V V+ = 5.5V V = 4.5V, COM T = +25C -0.25 0.01 0.25 A COM On-Leakage Current I 1V V or V = 4.5V, nA COM(ON) NO NC (Notes 5, 6) T = T to T -0.35 0.35 1V, or floating A MIN MAX LOGIC INPUT Input Logic High V 2.4 V IH Input Logic Low V 0.8 V IL Logic Input Current I V = 0.8V or 2.4V -0.1 0.005 0.1 A IN IN SWITCH DYNAMIC CHARACTERISTICS T = +25C 12 15 V , V = 3V, R = 300, A NO NC L Turn-On Time (Note 5) t ns ON C = 35pF, Figure 2 L T = T to T 18 A MIN MAX T = +25C 810 V , V = 3V, R = 300, A NO NC L Turn-Off Time (Note 5) t ns OFF C = 35pF, Figure 2 L T = T to T 12 A MIN MAX 2 MAX4645/MAX4646