Datasheet Analog Devices ADG508F

8-Channel/4-Channel
Fault-Protected Analog Multiplexers
ADG508F/ADG509F
FEATURES FUNCTIONAL BLOCK DIAGRAMS All switches off with power supply off
Analog output of on channel clamped within power
supplies if an overvoltage occurs
Latch-up proof construction
Low on resistance (270 Ω typical)
Fast switching times
tON: 230 ns maximum
tOFF: 130 ns maximum
Low power dissipation (3.3 mW maximum)
Fault and overvoltage protection (−40 V to +55 V)
Break-before-make construction
TTL and CMOS compatible inputs ADG508F
S1 D S8 APPLICATIONS A0 A1 A2 EN Figure 1. Existing multiplexer applications (both fault-protected and
nonfault-protected)
New designs requiring multiplexer functions ADG509F GENERAL DESCRIPTION S1A The ADG508F and ADG509F are CMOS analog multiplexers, with the ADG508F comprising eight single channels
and the ADG509F comprising four differential channels. These
multiplexers provide fault protection. Using a series n-channel,
p-channel, n-channel MOSFET structure, both device and signal
source protection is provided in the event of an overvoltage or
power loss. The multiplexer can withstand continuous overvoltage inputs from −40 V to +55 V. During fault conditions with …