The TMUX7208EVM supports evaluation of the TMUX7208 device in the 16-pin TSSOP (PW) package. TMUX7208 is a complementary metal-oxide semiconductor (CMOS) switch with latch-up immunity in a 8:1 single channel configuration. The device supports dual supplies (±4.5 V to ±22 V), a single supply (4.5 V to 44 V), or asymmetric supplies (such as VDD = 12 V, VSS = –5 V). The TMUX7208 supports bidirectional analog and digital signals on the source (Sx) and drain (D) pins ranging from VSS to VDD. 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. The Fail-Safe Logic circuitry applies voltages on the control pins before the supply pin, which protects the device from potential damage.

The EVM has the following features:

• Quick prototyping and testing setup for the 16-pin TMUX7208 device in the TSSOP (PW) package.
• TMUX7208 control logic truth table listed on board.
• No specific TMUX7208 is supplied or soldered to the evaluation module. Allows flexibility to choose the desired IC for evaluation.
• Support for both single supply and dual supply operation.
• Six power supply decoupling capacitors (2 × 0.1 μF, 2 × 1 μF, and 2 × 10 μF).
• Jumpers to nine signal lanes, VDD and VSS power rails, and control signals.
• Nine pads are available for placement of SMA connectors.
• Pads are available for pull-up or pull-down resistors on control signal pathways.
• Pads are available for surge protection diodes.
• 0805 capacitor pads are available on all signal pathways referenced to ground.

The following instructions are for setting up the EVM:

1. The control inputs and signal lines may be loaded by soldering components to signal path pads as needed. describes which load pads correspond to what pin on the DUT. SMA connectors can be soldered to corresponding pads accordingly.
   Table 5-1 Component Pad to TMUX7208 Pin Matrix

   Pin #	0805 Capacitor Pad ID	Protection Diode Pad	Protection Diode PN#	0603 Pull-up Pad	0603 Pull-Down Pad	Pad Locations
   4	C11	D3	SMAJ36CA	R13	R19	Top Layer
   5	C12	D4	SMAJ36CA	R14	R20	Top Layer
   6	C13	D5	SMAJ36CA	R21	R27	Top Layer
   7	C14	D6	SMAJ36CA	R22	R28	Top Layer
   8	C19	D14	SMAJ36CA	R45	R48	Top Layer
   9	C18	D11	SMAJ36CA	R38	R44	Top Layer
   10	C17	D10	SMAJ36CA	R37	R43	Top Layer
   11	C16	D8	SMAJ36CA	R30	R36	Top Layer
   12	C15	D7	SMAJ36CA	R29	R35	Top Layer

2. The board is powered by attaching ±5 V to ±22 V dual power supply or 5 V to 44 V single power supply to the screw terminal J2, with VDD, VSS, and GND oriented as specified in Table 6-1.
3. Jumpers should be placed according to desired functionality. Figure 5-1 displays a generic four-pin jumper, with the indicating white corner to designate position 1.

Figure 5-1 Generic Jumper and Header Position 1 Designator

Table 5-2 is the truth table for the TMUX7208, for reference to configure the corresponding control jumpers. Additional signal path jumpers may be configured as shown in Table 6-1.

Figure 7-1 and Figure 7-2 show the EVM PCB layout images.

Figure 7-1 Top View Illustration of the TMUX7208EVM Layout.

Figure 7-2 Bottom View Illustration of the TMUX7208EVM Layout.

Schemetic views fo the TMUX7208EVM. Figure 8-1 shows the editor view, which includes all connections and parts that are DNI. Figure 8-2 shows DNI view, removing DNI parts which are not included on the evaluation model out-of-the-box.

Figure 8-1 Schematic of the TMUX7208EVM (Editor View)

Figure 8-2 Schematic of the TMUX7208EVM (DNI View)

Table 9-1 details the EVM bill of materials.