MAX14978ETO+

The MAX14978ETO+ is a SuperSpeed USB passive switch (low/full/hi/SuperSpeed) in 42 pin TQFN package. This high performance, passive analogue switch is ideal for switching hi-speed USB and SuperSpeed USB data between one source and two loads or vice versa. The device can be used in applications where SuperSpeed USB ports are in limited supply. It consists of two sets of analogue switches with one set used for USB low speed, full speed and hi-speed signals and the second set used for USB SuperSpeed. The device operates from a single +3.3V supply and it has low insertion loss for all speeds. It allows for low distortion switching where high performance is required. The MAX14978 has ±6KV human body model (HBM) ESD protection on all I/O pins. In addition, the low/full/hi-speed COM_ ports have ESD protection to ±15KV HBM and ±8KV IEC 61000-4-2 contact.

• Supply voltage range from 3V to 5.5V (VCC) and 3V to 3.6V (VDD)
• Operating temperature range from -40°C to 85°C
• Maximum on-resistance match between channels is 1ohm (hi-speed USB switches)
• Designed for SuperSpeed USB applications, low/full/hi-speed (1.5/12/480Mbps) and SuperSpeed (5Gbps)
• Superior return loss and insertion loss for SuperSpeed analogue switches
• Supply current of 0.6μA (VCC = 3V) and 60μA (VDD = 3.3V)
• Off isolation of -48dB and crosstalk of -73dB at f = 10MHz (hi-speed USB switches)
• LVCMOS control (1.4V ≤ VIH ≤ 3.6V) and all link training is preserved (SuperSpeed)
• Shutdown supply current (ICC) of 0.1μA
• Maximum on-resistance of 10 ohm (hi-speed USB switches, VCOMD_ = 0V to VCC)

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Note

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