Datasheet
HD3SS3412
www.ti.com
SLAS828B –FEBRUARY 2012–REVISED NOVEMBER 2013
PIN FUNCTIONS (continued)
PIN
I/O DESCRIPTION
NAME NO.
A2+ 11 Port A, Channel 2, High-Speed Positive Signal
I/O
A2– 12 Port A, Channel 2, High-Speed Negative Signal
A3+ 15 Port A, Channel 3, High-Speed Positive Signal
I/O
A3– 16 Port A, Channel 3, High-Speed Negative Signal
SWITCH PORT B
B0+ 38 Port B, Channel 0, High-Speed Positive Signal
I/O
B0– 37 lPort B, Channel 0, High-Speed Negative Signal
B1+ 36 Port B, Channel 1, High-Speed Positive Signal
I/O
B1– 35 Port B, Channel 1, High-Speed Negative Signal
B2+ 29 Port B, Channel 2, High-Speed Positive Signal
I/O
B2– 28 Port B, Channel 2, High-Speed Negative Signal
B3+ 27 Port B, Channel 3, High-Speed Positive Signal
I/O
B3– 26 Port B, Channel 3, High-Speed Negative Signal
SWITCH PORT C
C0+ 34 Port C, Channel 0, High-Speed Positive Signal
I/O
C0– 33 Port C, Channel 0, High-Speed Negative Signal
C1+ 32 Port C, Channel 1, High-Speed Positive Signal
I/O
C1– 31 Port C, Channel 1, High-Speed Negative Signal
C2+ 25 Port C, Channel 2, High-Speed Positive Signal
I/O
C2– 24 Port C, Channel 2, High-Speed Negative Signal
C3+ 23 Port C, Channel 3, High-Speed Positive Signal
I/O
C3– 22 Port C, Channel 3, High-Speed Negative Signal
CONTROL, SUPPLY, AND NO CONNECT
NC 8, 18, 42 Electrically not connected. May connect to VDD or GND, or leave unconnected.
1, 4, 10, 14, 17,
GND Supply Negative power supply voltage
19, 21, 39, 41, Center Pad
SEL 9 I Select between port B or port C. Internally tied to GND via 100-kΩ resistor
VDD 5, 13, 20, 30, 40 Supply Positive power supply voltage
Table 2. MUX Pin Connections
(1)
PORT B OR PORT C CHANNEL
CONNECTED TO PORT A CHANNEL
PORT A CHANNEL
SEL = L SEL = H
A0+ B0+ C0+
A0– B0– C0–
A1+ B1+ C1+
A1– B1– C1–
A2+ B2+ C2+
A2– B2– C2–
A3+ B3+ C3+
A3– B3– C3–
(1) The HD3SS3412 can tolerate polarity inversions for all differential signals on Ports A, B, and C. Care
should be taken to ensure the same polarity is maintained on Port A versus Port B/C.
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