MAX391 Datasheet

• Low On-Resistance, 20Ω Typical
• Guaranteed On-Resistance Match Between Channels, < 2Ω
• Guaranteed On-Resistance Flatness Over Signal Range, 4Ω Max
• Guaranteed Charge Injection, < 5pC
• Improved Leakage Over Temperature, < 2.5nA at +85°C
• Electrostatic Discharge > 2000V per Method 3015.7
• Single-Supply Operation (+3V to +15V) Bipolar-Supply Operation (±3V to ±8V)
• Low Power Consumption, < 1µW
• TTL/CMOS-Logic Compatible

• ±5V DACs and ADCs
• Audio and Video Switching
• Battery-Powered Applications
• Communication Systems
• Guidance and Control Systems
• Heads-Up Displays
• Military Radios
• PBX, PABX
• Sample-and-Hold Circuits
• Test Equipment

The MAX391 are precision, quad, single-pole/single-throw (SPST) analog switches designed to operate at +3V, +5V, or ±5V. The MAX391 has four normally closed (NC) switches. All three devices offer low leakage (100pA max) and fast switching speeds (t_ON ≤ 130ns, t_OFF ≤ 75ns). Power consumption is just 1µW—ideal for battery-operated equipment. All devices operate from a single +3V to +15V supply or from dual ±3.0V to ±8V supplies.

With ±5V supplies, the MAX391 offer guaranteed 2Ω max channel-to-channel matching, 30Ω max on-resistance (R_ON), and 4Ω max R_ON flatness over the specified range.

These switches are also fully specified for single +5V operation, with 2Ω max R_ON match, 60Ω max R_ON, and 6Ω max flatness.

These low-voltage switches also offer 5pC max charge injection, and ESD protection is greater than 2000V, per method 3015.7.