Datasheet

MAX14978
SuperSpeed USB Passive Switch
(Low/Full/Hi/SuperSpeed)
10
Pin Configuration
Pin Description
TOP VIEW
TQFN
18
19
20
21
V
DD
GND
V
DD
GND
42
+
41
40
39
N.C.
N.C.
N.C.
N.C.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22
COM0-
V
DD
GND
COM1+
COM1-
GND
COM0+
GND
SEL2
N.C.
COMD-
N.C.
GND
COMD+
N.C. N.C. N.C.
NC1+ NC1- NO0+ NO0- NO1+ NO1- NC0- NC0+ V
DD
NOD- NCD- EN V
CC
SEL1 N.C. NCD+ NOD+
EP
MAX14978
PIN NAME FUNCTION
1, 2, 3, 6,
8, 36,
39-42
N.C. No Connection. Not internally connected.
4 COMD+ Hi-Speed USB Analog Switch, Common D+ Terminal
5, 10, 14,
17, 19, 21
GND Ground
7 COMD- Hi-Speed USB Analog Switch, Common D- Terminal
9 SEL2 Digital Control Input for SuperSpeed USB Analog Switches
11 COM0+ SuperSpeed USB Analog Switch 0, Common Positive Terminal
12 COM0- SuperSpeed USB Analog Switch 0, Common Negative Terminal
13, 18,
20, 30
V
DD
Positive Supply Voltage Input for SuperSpeed USB Switches. Bypass V
DD
to GND with a 0.1FF
ceramic capacitor as close as possible to the device.
15 COM1+ SuperSpeed USB Analog Switch 1, Common Positive Terminal
16 COM1- SuperSpeed USB Analog Switch 1, Common Negative Terminal
22 NO1- SuperSpeed USB Analog Switch 1, Normally Open Negative Terminal
23 NO1+ SuperSpeed USB Analog Switch 1, Normally Open Positive Terminal
24 NO0- SuperSpeed USB Analog Switch 0, Normally Open Negative Terminal
25 NO0+ SuperSpeed USB Analog Switch 0, Normally Open Positive Terminal
26 NC1- SuperSpeed USB Analog Switch 1, Normally Closed Negative Terminal
27 NC1+ SuperSpeed USB Analog Switch 1, Normally Closed Positive Terminal
28 NC0- SuperSpeed USB Analog Switch 0, Normally Closed Negative Terminal
29 NC0+ SuperSpeed USB Analog Switch 0, Normally Closed Positive Terminal
31 NOD- Hi-Speed USB Analog Switch, Normally Open D- Terminal
32 NCD- Hi-Speed USB Analog Switch, Normally Closed D- Terminal