TMUX1308BQBR

The TMUX1308 and TMUX1309 are general-purpose CMOS MUXes. The TMUX1308 is an 8:1 single-channel (single-ended) multiplexer, while the TMUX1309 is a 4:1 dual-channel (differential) multiplexer. These devices support bidirectional analog and digital signals ranging from GND to VDD on the source (Sx) and drain (Dx) pins. The TMUX13xx devices feature an internal injection current control function, eliminating the need for external diode and resistor networks (typically used to protect the switch and keep input signals within the supply voltage range). The internal injection current control circuit allows signals on disabled signal paths to exceed the supply voltage without affecting signals on enabled signal paths. Furthermore, the TMUX13xx devices have no internal diode paths to the supply pins, eliminating the risk of damaging components connected to the supply pins or inadvertently powering supply rails. All logic inputs feature 1.8 V logic-compatible thresholds, which ensure TTL and CMOS logic compatibility when operating at valid supply voltages. Failsafe logic circuitry allows voltage to be applied to the control pins before the supply pins, protecting the device from potential damage.

Applications

• Analog and digital multiplexing and demultiplexing
• Diagnostics and monitoring
• Data center switches
• Remote Radio Units (RRU)
• Rack servers
• Electricity meters
• Appliances
• Air conditioners
• Multifunction printers
• String inverters
• IP network cameras
• Currency counters
• Off-highway vehicle control systems

Key features

• Injection current control
• Reverse supply protection
• No ESD diode path to VDD
• Wide supply voltage range: 1.62V to 5.5V
• Low capacitance
• Bidirectional signal path
• Rail-to-rail operation
• 1.8V logic level compatible
• Fail-safe logic
• Break-before-make switching
• Functional Safety version available with documentation for functional safety system design
• TMUX1308 pin-compatible with industry-standard 4051 and 4851 multiplexers
• TMUX1309 pin-compatible with industry-standard 4052 and 4852 multiplexers