MAX385

Single-Supply Operation (+3V to +15V) Bipolar-Supply Operation (±3V to ±8V)
Pin-Compatible with DG401/DG403/DG405
Low On-Resistance, 20½ Typical (35½ Max)
Guaranteed Matched On-Resistance Between Channels, <2
Guaranteed Flat On-Resistance over Specified Analog Signal Range, <4
Guaranteed Charge Injection, <5pC
Guaranteed Off-Channel Leakage, <2.5nA at +85°C
TTL/CMOS-Logic Compatible with 3V, 5V, ±3V, and ±5V Supplies
Rail-to-Rail Analog Signal Handling Capability

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

Voltage Referenced to GND
V+.......................................................................-0.3V to +17V
V- .......................................................................+0.3V to -17V
V+ to V-..............................................................-0.3V to +17V
COM_, NO_, NC_, IN_ ..............(V- - 2V) to (V+ + 2V) or 30mA,
whichever occurs first
Continuous Current, any pin ..........................................30mA
Peak Current, any pin
(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
MAX38_C_ E .....................................................0°C to +70°C
MAX38_E_ E ..................................................-40°C to +85°C
MAX38_MJE .................................................-55°C to +125°C
Storage Temperature Range .......................-65°C to +150°C
Lead Temperature (soldering, 10sec) ..........................+300°C

Note 1: Signals on NC, NO, COM, or IN exceeding V+ or V- are clamped by internal diodes. Limit forward diode current to maximum current rating.

The MAX381/MAX383/MAX385 are precision, low-voltage analog switches. The single-pole single-throw MAX381 and double-pole single-throw MAX385 dual switches are normally open. The single-pole doublethrow MAX383 has two normally open and two normally closed poles. All three parts offer low on-resistance (less than 35½), guaranteed to match to within 2 between channels and to remain flat over the specified analog signal range (4½ max). They also offer low leakage (less than 250pA at +25°C and less than 2.5nA at +85°C) and fast switching (turn-on time less than 175ns and turn-off time less than 100ns).

The MAX381/MAX383/MAX385 are fabricated with Maxim's low-voltage silicon-gate process for high system accuracy. Design improvements guarantee extremely low charge injection (<5pC) and low power consumption (<10W).

These monolithic switches MAX385 operate with a single positive supply (+3V to +15V) or with split supplies (±3V to ±8V) while retaining CMOS-logic input compatibility and fast switching. CMOS inputs provide reduced input loading.