The TMUX7308F and TMUX7309F are modern
complementary metal-oxide semiconductor (CMOS) analog multiplexers in 8:1 (single
ended) and 4:1 (differential) configurations. The devices work well with dual
supplies (±5 V to ±22 V), a single supply (8 V to 44 V), or asymmetric supplies
(such as V DD = 12 V, V SS = –5 V). The overvoltage protection
is available in powered and powered-off conditions, making the TMUX7308F and
TMUX7309F devices suitable for applications where power supply sequencing cannot be
precisely controlled.
The device blocks fault voltage up to +60 V or
–60 V relative to ground in both powered and powered-off conditions. When no power
supplies are present, the switch channels remain in the OFF state regardless of
switch input conditions and logic control status. Under normal operation conditions,
if the analog input signal level on any Sx pin exceeds the supply voltage
(V DD or V SS) by a threshold voltage (V T), the
channel turns OFF and the Sx pin becomes high impedance. When the fault channel is
selected, the drain pin (D or Dx) is pulled to the supply (V DD or
V SS) that was exceeded.
The low capacitance, low charge
injection, and integrated fault protection enables the TMUX7308F and TMUX7309F
devices to be used in front end data acquisition applications where high performance
and high robustness are both critical. The devices are available in a standard TSSOP
package and smaller WQFN package (ideal if PCB space is limited).
The TMUX7308F and TMUX7309F are modern
complementary metal-oxide semiconductor (CMOS) analog multiplexers in 8:1 (single
ended) and 4:1 (differential) configurations. The devices work well with dual
supplies (±5 V to ±22 V), a single supply (8 V to 44 V), or asymmetric supplies
(such as V DD = 12 V, V SS = –5 V). The overvoltage protection
is available in powered and powered-off conditions, making the TMUX7308F and
TMUX7309F devices suitable for applications where power supply sequencing cannot be
precisely controlled.
The device blocks fault voltage up to +60 V or
–60 V relative to ground in both powered and powered-off conditions. When no power
supplies are present, the switch channels remain in the OFF state regardless of
switch input conditions and logic control status. Under normal operation conditions,
if the analog input signal level on any Sx pin exceeds the supply voltage
(V DD or V SS) by a threshold voltage (V T), the
channel turns OFF and the Sx pin becomes high impedance. When the fault channel is
selected, the drain pin (D or Dx) is pulled to the supply (V DD or
V SS) that was exceeded.
The low capacitance, low charge
injection, and integrated fault protection enables the TMUX7308F and TMUX7309F
devices to be used in front end data acquisition applications where high performance
and high robustness are both critical. The devices are available in a standard TSSOP
package and smaller WQFN package (ideal if PCB space is limited).