MAX303 General Description
The MAX301/MAX303/MAX305 are precision, dual, highspeed analog switches. The single-pole single-throw (SPST) MAX301 and double-pole single-throw (DPST) MAX305 dual switches are normally open (NO). The single-pole doublethrow (SPDT) MAX303 has two NO and two normally closed (NC) poles. All three parts offer low on resistance (less than 35W), guaranteed to match to within 2Wbetween channels and to remain flat over the full analog signal range (3W max). They also offer low leakage (less than 250pA at +25°C and less than 6nA at +85°C) and fast switching (turn-on time less than 150ns and turn-off time less than 100ns).
The MAX301/MAX303/MAX305 are fabricated with Maxim's new improved silicon-gate process for high system accuracy. Design improvements guarantee extremely low charge injection (15pC) and low power consumption (35W). A 44V maximum breakdown voltage allows rail-to-rail analog signal capability.
These monolithic switches operate with a single positive supply (+10V to +30V) or with split supplies (±4.5V to ±20V) while retaining CMOS-logic input compatibility and fast switching. CMOS inputs provide reduced input loading.
MAX303 Maximum Ratings
Voltage Referenced to V-
V+...........................................................................................44V
GND ...................................................................................... 25V
VL ...........................................................(GND-0.3V) to (V+) +0.3V
NO_, NC_, IN_, COM_ .....................(V- - 2V) to (V+ + 2V) or 30mA,
......................................................................whichever occurs first
Continuous Current, COM_, NO_, NC_....................................30mA
Peak Current, COM_, NO_, NC_
(pulsed at 1ms, 10% duty cycle max) ...............................100mA
Continuous Power Dissipation (TA = +70) (Note 2)
16-Pin Plastic DIP (derate 10.53mW/ above +70) .....842mW
16-Pin Narrow SO (derate 8.70mW/ above +70) .......696mW
16-Pin CERDIP (derate 10.00mW/ above +70)...........800mW
20-Pin LCC (derate 9.09mW/ above +70)...................727mW
Operating Temperature Ranges:
MAX30_C_ _ .............................................................0 to +70
MAX30_E_ _...........................................................-40 to +85
MAX30_M_ _........................................................-55 to +125
Storage Temperature Range ..................................-65 to +150
Lead Temperature (soldering, 10sec) ..................................+300
MAX303 Features
Low On Resistance <22W Typical (35W Max)
Guaranteed Matched On Resistance Between Channels <2W
Guaranteed Flat On Resistance over Full Analog Signal Range 3W Max
Guaranteed Charge Injection <15pC
Guaranteed Off-Channel Leakage <6nA at +85
Single-Supply Operation (+10V to +30V)
Bipolar-Supply Operation (±4.5V to ±20V)
TTL-/CMOS-Logic Compatible
Rail-to-Rail Analog Signal Handling Capability
MAX303 Typical Application
Sample-and-Hold Circuits
Test Equipment
Heads-Up Displays
Guidance and Control Systems
Military Radios
Communication Systems
Battery-Operated Systems
PBX, PABX
MAX303 Connection Diagram
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