MAX309

Guaranteed On-Resistance Match Between Channels, <5 Max
Low On-Resistance, <100Max
Guaranteed Flat On-Resistance over Specified Signal Range, 7 Max
Guarateed Low Charge Injection, <10pC
NO-Off Leakage Current <5nA at +85°C
COM-Off Leakage Current <20nA at +85°C
ESD Protection >2000V
Plug-In Upgrade for Industry-Standard DG408/DG409/DG508A/DG509A
Single-Supply Operation (+4.5V to +30V) Bipolar-Supply Operation (±4.5V to ±20V)
Low Power Consumption, <300W
Rail-to-Rail Signal Handling
TTL/CMOS-Logic Compatible

Sample-and-Hold Circuits Automatic Test Equipment Heads-Up Displays Guidance and Control Systems Military Radios Communications Systems Battery-Operated Systems PBX, PABX Audio Signal Routing

Voltage Referenced to VV+
...............................................................................-0.3V, 44V
GND........................................................................-0.3V, 25V
Digital Inputs, NO, COM (Note 1)......(V- - 2V) to (V+ + 2V) or
30mA, (whichever occurs first)
Continuous Current (any terminal) ...............................30mA
Peak Current, NO or COM
(pulsed at 1ms, 10% duty cycle max) .........................100mA
Continuous Power Dissipation (TA = +70°C)
Plastic DIP (derate 10.53mW/°C above +70°C) ......842mW
Narrow SO (derate 8.70mW/°C above +70°C) ........696mW
CERDIP (derate 10.00mW/°C above +70°C)............800mW
Operating Temperature Ranges
MAX30_C_ _ ....................................................0°C to +70°C
MAX30_E_ _..................................................-40°C to +85°C
MAX30_MJE ................................................-55°C to +125°C
Storage Temperature Range .....................-65°C to +150°C
Lead Temperature (soldering, 10sec) .......................+300°C

Note 1: Signals on NO, COM, EN, A0, A1, or A2 exceeding V+ or V- are clamped by internal diodes. Limit forward current to maximum current ratings.

The MAX308/MAX309 precision, monolithic, CMOS analog multiplexers (muxes) offer low on-resistance (less than 100), which is matched to within 5 between channels and remains flat over the specified analog signal range (7 max). They also offer low leakage over temperature (NO-off leakage current less than 5nA at +85°C) and fast switching speeds (transition time less than 250ns). The MAX308 is a single-ended 1-of-8 device, and the MAX309 is a differential 2-of-4 device.

The MAX308/MAX309 are fabricated with Maxim's improved 44V silicon-gate process. Design improvements yield extremely low charge injection (less than 10pC) and guarantee electrostatic discharge protection greater than 2000V.

These muxes operate with a single +4.5V to +30V supply or bipolar ±4.5V to ±20V supplies, while retaining TTL/CMOS-logic input compatibility and fast switching. CMOS inputs provide reduced input loading. These improved parts are plug-in upgrades for the industrystandard DG408, DG409, DG508A, and DG509A.