CBTL06121_1

© NXP B.V. 2008. All rights reserved.

Product data sheet

Rev. 01 — 23 May 2008

8 of 19

NXP Semiconductors

CBTL06121

Gen1 hex display multiplexer

[1]

HWQFN56R package die supply ground is connected to both GND pins and exposed center pad. GND pins must be connected to

supply ground for proper device operation. For enhanced thermal, electrical, and board level performance, the exposed pad needs to be

soldered to the board using a corresponding thermal pad on the board and for proper heat conduction through the board, thermal vias

need to be incorporated in the PCB in the thermal pad region.

X

−

15

19

pass-through output

from RX1

− input

X

− is an analog ‘pass-through’ output corresponding to the

RX1

− input. The path from RX1− to X− is matched with the

path from RX1+ to X+. X+ and X

− form a differential pair

when the pass-through MUX mode is selected.

D0+

43

54

pass-through output 1,

option 1

Analog ‘pass-through’ output 1 corresponding to IN_0+

and IN_0

−, when SEL = 1.

D0

−

42

53

D1+

41

52

pass-through output 2,

option 1

Analog ‘pass-through’ output 1 corresponding to IN_1+

and IN_1

−, when SEL = 1.

D1

−

40

51

D2+

39

47

pass-through output 3,

option 1

Analog ‘pass-through’ output 1 corresponding to IN_2+

and IN_2

−, when SEL = 1.

D2

−

38

46

D3+

37

45

pass-through output 4,

option 1

Analog ‘pass-through’ output 1 corresponding to IN_3+

and IN_3

−, when SEL = 1.

D3

−

36

44

TX0+

54

43

pass-through output 1,

option 2

Analog ‘pass-through’ output 2 corresponding to IN_0+

and IN_0

−, when SEL = 0.

TX0

−

53

42

TX1+

52

41

pass-through output 2,

option 2

Analog ‘pass-through’ output 2 corresponding to IN_1+

and IN_1

−, when SEL = 0.

TX1

−

51

40

TX2+

47

39

pass-through output 3,

option 2

Analog ‘pass-through’ output 2 corresponding to IN_2+

and IN_2

−, when SEL = 0.

TX2

−

46

38

TX3+

45

37

pass-through output 4,

option 2

Analog ‘pass-through’ output 2 corresponding to IN_3+

and IN_3

−, when SEL = 0.

TX3

−

44

36

6, 17, 22,

27, 34,

55

6, 17, 22,

27, 34,

55

3.3 V supply

Supply voltage (3.3 V

± 10 %).

AUX+

26

33

differential input

High-speed differential pair for AUX signals.

AUX

−

25

32

differential input

OUT+

12

14

differential input

High-speed differential pair for PCIe RX0+ signal.

OUT

−

13

15

differential input

High-speed differential pair for PCIe RX0

− signal.

GND[1]

1, 11, 16,

20, 21,

28, 29,

35, 48,

49, 56

1, 11, 16,

20, 21,

28, 29,

35, 48,

49, 56

supply ground

Ground.

SPARE

23

30

single-ended input

Spare channel for general-purpose switch use.

Connected to pin X

− when SEL = 1.

Table 2.

Symbol

Pin

Type

Description

Pinout A Pinout B