Document
19-0350; Rev 0; 12/94
Precision, Dual-Supply, SPST Analog Switches
_______________General Description
The MAX320/MAX321/MAX322 are precision, dual, SPST analog switches designed to operate from ±3V to ±8V dual supplies. The MAX320 has two normally open (NO) switches and the MAX321 has two normally closed (NC) switches. The MAX322 has one NO and one NC switch. Low power consumption (1.25mW) makes these parts ideal for battery-powered equipment. They offer low leakage currents (100pA max) and fast switching speeds (tON = 150ns max, tOFF = 100ns max). The MAX320 series, powered from ±5V supplies, offers 35 Ω max on-resistance (R ON ), 2 Ω max matching between channels, and 4Ω max RON flatness. These switches also offer 5pC max charge injection and a minimum of 2000V ESD protection per Method 3015.7. For equivalent devices specified for single-supply operation, see the MAX323/MAX324/MAX325 data sheet. For quad versions of these switches, see the MAX391/MAX392/MAX393 data sheet.
____________________________Features
o Low On-Resistance, 35Ω max (16Ω typical) o RON Matching Between Channels <2Ω o RON Flatness <4Ω o Guaranteed Charge Injection <5pC o Bipolar Supply Operation (±3V to ±8V) o Low Power Consumption, <1.25mW o Low Leakage Current Over Temperature, <2.5nA at +85°C o Fast Switching, tON <150ns, tOFF <100ns o Guaranteed Break-Before-Make (MAX322 only)
MAX320/MAX321/MAX322
______________Ordering Information
PART MAX320CPA MAX320CSA TEMP. RANGE 0°C to +70°C 0°C to +70°C PIN-PACKAGE 8 Plastic DIP 8 SO
________________________Applications
Battery-Operated Systems Heads-Up Displays Audio and Video Switching Test Equipment ±5V DACs and ADCs Sample-and-Hold Circuits Guidance and Control Systems Military Radios Communications Systems PBX, PABX
MAX320CUA 0°C to +70°C 8 µMAX MAX320C/D 0°C to +70°C Dice* MAX320EPA -40°C to +85°C 8 Plastic DIP MAX320ESA -40°C to +85°C 8 SO MAX320EJA -40°C to +85°C 8 CERDIP** MAX320MJA -55°C to +125°C 8 CERDIP** Ordering Information continued at end of data sheet. * Contact factory for dice specifications. ** Contact factory for availability.
_____________________Pin Configurations/Functional Diagrams/Truth Tables
TOP VIEW
MAX320
NO1 1 COM1 2 IN2 3 V- 4 DIP/SO/ µ MAX
MAX320 LOGIC SWITCH 0 1 OFF ON 8 7 6 5
MAX321
V+ IN1 COM2 NO2 NC1 1 COM1 2 IN2 3 V- 4 DIP/SO/ µ MAX
MAX321 LOGIC SWITCH 0 1 ON OFF 8 7 6 5
MAX322
V+ IN1 COM2 NC2 NO1 1 COM1 2 IN2 3 V- 4 DIP/SO/ µ MAX
LOGIC 0 1 MAX322 SWITCH 1 OFF ON SWITCH 2 ON OFF 8 7 6 5
V+ IN1 COM2 NC2
SWITCHES SHOWN FOR LOGIC "0" INPUT
________________________________________________________________ Maxim Integrated Products
1
Call toll free 1-800-998-8800 for free samples or literature.
Precision, Dual-Supply, SPST Analog Switches MAX320/MAX321/MAX322
ABSOLUTE MAXIMUM RATINGS
Voltage Referenced to VV+ ................................................................(V- - 0.3V) to +17V IN_, COM_, NC_, NO_ (Note 1) .........(V- - 0.3V) to (V+ + 0.3V) Continuous Current (any ter.