SCDA057 March   2025 TMUX7612 , TMUX8212 , TMUX8612 , TMUX9612 , TMUXS7614D

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Parameter Considerations for Replacing a Photorelay With a High Voltage Analog Switch
  6. 3What to do if the Control Ground and Switch Grounds are Different
  7. 4Summary and Part Recommendations
  8. 5References

4 Summary and Part Recommendations

Replacing photorelays with analog switches can offer significant benefits in terms of size, cost and switching speed, especially in automated test and measurement systems. However, careful attention much be paid to key specifications such as isolation voltage, switch voltage and ground reference compatibility to make sure proper functionality and avoid damage to the system. By comparing these relevant parameters and using a ground-level translator in necessary applications TI provides a variety of designs for an engineer to successfully replace photomos relays, achieving enhanced performance and efficiency in designs.

Channel Count Signal Range Package Channel Density On-Resistance Off-Capacitance
TMUXS7614DZEMR 1:1, 8-ch 4.5V to 42V ±4.5V to ±25V 2.5mm2 /ch 1Ω 27pF
TMUX7612RUMR 1:1, 4-ch 4.5V to 50V ±4.5V to ±25V 4.0mm2 /ch 1.1Ω 27pF
TMUX8212RUMR 1:1, 4-ch 10V to 100V ±10V to ±50V 4.0mm2 /ch 5Ω 12pF
TMUX8612RUMR 1:1, 4-ch 10V to 100V ±10V to ±50V 4.0mm2 /ch 14Ω 5pF
TMUX9612RUMR 1:1, 4-ch 10V to 220V ±10V to ±110V 4.0mm2 /ch 14Ω 5pF