Description
The PS398/PS399 are improved high precision analog multiplexers. The PS398, an 8-channel single-ended mux, selects one of eight inputs to a common output as determined by a 3-bit address A0-A2. An EN (enable) pin when low disables all switches, useful when stacking several devices. The PS399 is a 4-channel differential multiplexer. It selects one of four differential inputs to a common differential output as determined by a 2-bit address A0, A1. An EN pin may be driven low to disable all switches.

Features
• Low On-Resistance (60Ω typ.) Minimizes Distortion
   and Error Voltages
• Low Glitching Reduces Step Errors and Improves
   Settling Times. Charge Injection: <5pC
• Split-Supply Operation (+3V to +8V)
• Improved Second Sources for MAX398/MAX399
• On-Resistance Matching Between Channels: <6Ω
• On-Resistance Flatness: <11Ω
• Low Off-Channel Leakage,
   INO(OFF) < 1nA @ +85oC, ICOM(ON), <2.5nA @ +85oC
• TTL/CMOS Logic Compatible
• Fast Switching Speed, tTRANS <250ns
• Break-Before-Make action eliminates momentary crosstalk
• Rail-to-Rail Analog Signal Range
• Low Power Consumption, <300µW
• Narrow SOIC and QSOP Packages Minimize Board Area

Applications
• Data Acquisition Systems
• Audio Switching and Routing
• Test Equipment
• PBX, PABX
• Telecommunication Systems
• Battery-Powered Systems