44-V, low Ron, 2:1, 1 ch latch-up immune precision multiplexers with 1.8-V logic extended temp

The TMUX7219M is a complementary

metal-oxide semiconductor (CMOS) switch with latch-up immunity in a single channel,

2:1 (SPDT) configuration. The device works with a single supply (4.5 V to 44

V), dual supplies

(±4.5 V to ±22 V), or asymmetric supplies (such as VDD = 12 V, VSS

= –5 V). The TMUX7219M supports bidirectional analog and digital signals on the

source (Sx) and drain (D) pins ranging from VSS to

VDD.

The TMUX7219M can be enabled or

disabled by controlling the EN pin. When disabled, both signal path switches are

off. When enabled, the SEL pin can be used to turn on signal path 1 (S1 to D) or

signal path 2 (S2 to D). All logic control inputs support logic levels from 1.8 V to

VDD, ensuring both TTL and CMOS logic compatibility when operating in

the valid supply voltage range. Fail-Safe Logic circuitry allows voltages on the control pins to be

applied before the supply pin, protecting the device from potential damage.

The TMUX72xx family provides latch-up

immunity, preventing undesirable high current events between parasitic structures

within the device typically caused by overvoltage events. A latch-up condition

typically continues until the power supply rails are turned off and can lead to

device failure. The latch-up immunity feature allows the TMUX72xx family of switches

and multiplexers to be used in harsh environments. Additionally, the TMUX7219M is rated for extended temperature use down

to –55°C, making it ideal for harsh industrial and aerospace applications.