18.1.2 Truth Table Symbol Descriptions

Combinational truth tables use the following symbols:

• 1 - indicates logic level one.
• 0 - indicates logic level zero.
• X - indicates either logic level one or zero (don’t care).

AND2

This component is supported by A500K, APA families.

• Function: 2-Input AND
• Input: A, B
• Output: Y

Table 18-1. Truth Table

A	B	Y
X	0	0
0	X	0
1	1	1

Table 18-2. Modules

Family	Seq	Comb
All listed	—	1

AND2FT

This component is supported by A500K, APA families.

• Function: 2-Input AND with Active Low A Input
• Input: A, B
• Output: Y

Table 18-3. Truth Table

A	B	Y
X	0	0
1	X	0
0	1	1

Table 18-4. Modules

Family	Seq	Comb
All listed	—	1

AND3

This component is supported by A500K, APA families.

• Function: 3-Input AND
• Input: A, B, C
• Output: Y

Table 18-5. Truth Table

A	B	C	Y
X	X	0	0
X	0	X	0
0	X	X	0
1	1	1	1

Table 18-6. Modules

Family	Seq	Comb
All listed	—	1

AND3FFT

This component is supported by A500K, APA families.

• Function: 3-Input AND with Active Low A and B Inputs
• Input: A, B, C
• Output: Y

Table 18-7. Truth Table

A	B	C	Y
X	X	0	0
X	1	X	0
1	X	X	0
0	0	1	1

Table 18-8. Modules

Family	Seq	Comb
All listed	—	1

AND3FTT

This component is supported by A500K, APA families.

• Function: 3-Input AND with Active Low A Input
• Input: A, B, C
• Output: Y

Table 18-9. Truth Table

A	B	C	Y
X	X	0	0
X	0	X	0
1	X	X	0
0	1	1	1

Table 18-10. Modules

Family	Seq	Comb
All listed	—	1

A021

This component is supported by A500K, APA families.

• Function: 3-Input AND-OR
• Input: A, B, C
• Output: Y

Table 18-11. Truth Table

A	B	C	Y
0	X	0	0
X	0	0	0
X	X	1	1
1	1	X	1

Table 18-12. Modules

Family	Seq	Comb
All listed	—	1

A021FTF

This component is supported by A500K, APA families.

• Function: 3-Input AND-OR with Active Low A and C Inputs
• Input: A, B, C
• Output: Y

Table 18-13. Truth Table

A	B	C	Y
X	X	0	1
X	0	1	0
0	1	X	1
1	X	1	0

Table 18-14. Modules

Family	Seq	Comb
All listed	—	1

A021FTT

This component is supported by A500K, APA families.

• Function: 3-Input AND-OR with Active Low A Input
• Input: A, B, C
• Output: Y

Table 18-15. Truth Table

A	B	C	Y
X	0	0	0
X	X	1	1
0	1	X	1
1	X	0	0

Table 18-16. Modules

Family	Seq	Comb
All listed	—	1

A021TTF

This component is supported by A500K, APA families.

• Function: 3-Input AND-OR with Active Low C Input
• Input: A, B, C
• Output: Y

Table 18-17. Truth Table

A	B	C	Y
X	X	0	1
X	0	1	0
0	X	1	0
1	1	X	1

Table 18-18. Modules

Family	Seq	Comb
All listed	—	1

A0121

This component is supported by A500K, APA families.

• Function: 3-Input AND-OR-INVERT
• Input: A, B, C
• Output: Y

Table 18-19. Truth Table

A	B	C	Y
0	X	0	1
X	0	0	1
X	X	1	0
1	1	X	0

Table 18-20. Modules

Family	Seq	Comb
All listed	—	1

A0I21FTF

This component is supported by A500K, APA families.

• Function: 3-Input AND-OR-INVERT with Active Low A and C Inputs
• Input: A, B, C
• Output: Y

Table 18-21. Truth Table

A	B	C	Y
X	X	0	0
X	0	1	1
0	1	X	0
1	X	1	1

Table 18-22. Modules

Family	Seq	Comb
All listed	—	1

A0I21FTT

This component is supported by A500K, APA families.

• Function: 3-Input AND-OR-INVERT with Active Low A Input
• Input: A, B, C
• Output: Y

Table 18-23. Truth Table

A	B	C	Y
X	0	0	1
X	X	1	0
0	1	X	0
1	X	0	1

Table 18-24. Modules

Family	Seq	Comb
All listed	—	1

A0I21TTF

This component is supported by A500K, APA families.

• Function: 3-Input AND-OR-INVERT with Active Low C Input
• Input: A, B, C
• Output: Y

Table 18-25. Truth Table

A	B	C	Y
X	X	0	0
X	0	1	1
0	X	1	1
1	1	X	0

Table 18-26. Modules

Family	Seq	Comb
All listed	—	1

BFR

This component is supported by A500K, APA families.

• Function: Buffer
• Input: A
• Output: Y

Table 18-27. Truth Table

A	Y
0	1
1	0

Table 18-28. Modules

Family	Seq	Comb
All listed	—	1

BUBBLE

This component is supported by A500K, APA families.

• Function: Inverter (Only for internal embedded memory)
• Input: A
• Output: Y

Table 18-29. Truth Table

A	Y
0	1
1	0

Table 18-30. Modules

Family	Seq	Comb
All listed	—	1

GND

This component is supported by A500K, APA families.

• Function: Ground

INV

This component is supported by A500K, APA families.

• Function: Inverter
• Input: A
• Output: Y

Table 18-31. Truth Table

A	Y
0	1
1	0

Table 18-32. Modules

Family	Seq	Comb
All listed	—	1

MUX2H

This component is supported by A500K, APA families.

• Function: 2 to 1 Multiplexer
• Input: A, B, S
• Output: Y

Table 18-33. Truth Table

S	Y
0	A
1	B

Table 18-34. Modules

Family	Seq	Comb
All listed	—	1

NAND2

This component is supported by A500K, APA families.

• Function: 2-Input NAND
• Input: A, B
• Output: Y

Table 18-35. Truth Table

S	B	Y
1	1	0
0	X	1
X	0	1

Table 18-36. Modules

Family	Comb
All listed	1

NAND2FT

This component is supported by A500K, APA families.

• Function: 2-Input NAND with Active Low A Input
• Input: A, B
• Output: Y

Table 18-37. Truth Table

S	B	Y
1	X	1
0	1	0
X	0	1

Table 18-38. Modules

Family	Seq	Comb
All listed	—	1

NAND3

This component is supported by A500K, APA families.

• Function: 3-Input NAND
• Input: A, B, C
• Output: Y

Table 18-39. Truth Table

A	B	C	Y
0	X	X	1
X	X	0	1
X	0	X	1
1	1	1	0

Table 18-40. Modules

Family	Seq	Comb
All listed	—	1

NAND3FFT

This component is supported by A500K, APA families.

• Function: 3-Input NAND with Active Low A and B Inputs
• Input: A, B, C
• Output: Y

Table 18-41. Truth Table

A	B	C	Y
X	X	0	1
X	1	X	1
1	X	X	1
0	0	1	0

Table 18-42. Modules

Family	Seq	Comb
All listed	—	1

NAND3FTT

This component is supported by A500K, APA families.

• Function: 3-Input NAND with Active Low A Input
• Input: A, B, C
• Output: Y

Table 18-43. Truth Table

A	B	C	Y
X	X	0	1
X	0	X	1
1	X	X	1
0	1	1	0

Table 18-44. Modules

Family	Seq	Comb
All listed	—	1

NOR2

This component is supported by A500K, APA families.

• Function: 2-Input NOR
• Input: A, B
• Output: Y

Table 18-45. Truth Table

A	B	Y
1	X	0
X	1	0
0	0	1

Table 18-46. Modules

Family	Seq	Comb
All listed	—	1

NOR2FT

This component is supported by A500K, APA families.

• Function: 2-Input NOR with Active Low A Input
• Input: A, B
• Output: Y

Table 18-47. Truth Table

A	B	Y
0	X	0
X	1	0
1	0	1

Table 18-48. Modules

Family	Seq	Comb
All listed	—	1

NOR3

This component is supported by A500K, APA families.

• Function: 3-Input NOR
• Input: A, B, C
• Output: Y

Table 18-49. Truth Table

A	B	C	Y
1	X	X	0
X	X	1	0
X	1	X	0
0	0	0	1

Table 18-50. Modules

Family	Seq	Comb
All listed	—	1

NOR3FFT

This component is supported by A500K, APA families.

• Function: 3-Input NOR with Active Low A and B Inputs
• Input: A, B, C
• Output: Y

Table 18-51. Truth Table

A	B	C	Y
X	0	X	0
0	X	X	0
X	X	1	0
1	1	0	1

Table 18-52. Modules

Family	Seq	Comb
All listed	—	1

NOR3FTT

This component is supported by A500K, APA families.

• Function: 3-Input NOR with Active Low A Input
• Input: A, B, C
• Output: Y

Table 18-53. Truth Table

A	B	C	Y
0	X	X	0
X	X	1	0
X	1	X	0
1	0	0	1

Table 18-54. Modules

Family	Seq	Comb
All listed	—	1

NUBBLE

This component is supported by A500K, APA families.

• Function: Buffer (Only for internal embedded memory)
• Input: A
• Output: Y

Table 18-55. Truth Table

A	Y
0	0
1	1

Table 18-56. Modules

Family	Seq	Comb
All listed	—	1

0A21

This component is supported by A500K, APA families.

• Function: 3-Input OR-AND
• Input: A, B, C
• Output: Y

Table 18-57. Truth Table

A	B	C	Y
X	X	0	0
0	0	X	0
1	X	1	1
X	1	1	1

Table 18-58. Modules

Family	Seq	Comb
All listed	—	1

0A21FTF

This component is supported by A500K, APA families.

• Function: 3-Input OR-AND with Active Low A and C Inputs
• Input: A, B, C
• Output: Y

Table 18-59. Truth Table

A	B	C	Y
X	X	1	0
1	0	X	0
0	X	0	1
X	1	0	1

Table 18-60. Modules

Family	Seq	Comb
All listed	—	1

0A21FTT

This component is supported by A500K, APA families.

• Function: 3-Input OR-AND with Active Low A Input
• Input: A, B, C
• Output: Y

Table 18-61. Truth Table

A	B	C	Y
X	X	0	0
1	0	X	0
0	X	1	1
X	1	1	1

Table 18-62. Modules

Family	Seq	Comb
All listed	—	1

0A21TTF

This component is supported by A500K, APA families.

• Function: 3-Input OR-AND with Active Low C Input
• Input: A, B, C
• Output: Y

Table 18-63. Truth Table

A	B	C	Y
0	0	X	0
X	X	1	0
X	1	0	1
1	X	0	1

Table 18-64. Modules

Family	Seq	Comb
All listed	—	1

0AI21

This component is supported by A500K, APA families.

• Function: 3-Input OR-NAND
• Input: A, B, C
• Output: Y

Table 18-65. Truth Table

A	B	C	Y
1	X	1	0
X	1	1	0
X	X	0	1
0	0	X	1

Table 18-66. Modules

Family	Seq	Comb
All listed	—	1

0AI21FTF

This component is supported by A500K, APA families.

• Function: 3-Input OR-NAND with Active Low A and C Inputs
• Input: A, B, C
• Output: Y

Table 18-67. Truth Table

A	B	C	Y
0	X	0	0
X	1	0	0
X	X	1	1
1	0	X	1

Table 18-68. Modules

Family	Seq	Comb
All listed	—	1

0AI21FTT

This component is supported by A500K, APA families.

• Function: 3-Input OR-NAND with Active Low A Input
• Input: A, B, C
• Output: Y

Table 18-69. Truth Table

A	B	C	Y
0	X	1	0
X	1	1	0
X	X	0	1
1	0	X	1

Table 18-70. Modules

Family	Seq	Comb
All listed	—	1

0AI21TTF

This component is supported by A500K, APA families.

• Function: 3-Input OR-NAND with Active Low C Input
• Input: A, B, C
• Output: Y

Table 18-71. Truth Table

A	B	C	Y
0	0	X	1
X	1	0	0
X	X	1	1
1	X	0	0

Table 18-72. Modules

Family	Seq	Comb
All listed	—	1

0R2

This component is supported by A500K, APA families.

• Function: 2-Input OR
• Input: A, B
• Output: Y

Table 18-73. Truth Table

A	B	Y
1	X	1
X	1	1
0	0	0

Table 18-74. Modules

Family	Seq	Comb
All listed	—	1

0R2FT

This component is supported by A500K, APA families.

• Function: 2-Input OR with Active Low A Input
• Input: A, B
• Output: Y

Table 18-75. Truth Table

A	B	Y
0	X	1
1	0	0
X	1	1

Table 18-76. Modules

Family	Seq	Comb
All listed	—	1

0R3

This component is supported by A500K, APA families.

• Function: 3-Input OR
• Input: A, B, C
• Output: Y

Table 18-77. Truth Table

A	B	C	Y
1	X	X	1
X	1	X	1
X	X	1	1
0	0	0	0

Table 18-78. Modules

Family	Seq	Comb
All listed	—	1

0R3FFT

This component is supported by A500K, APA families.

• Function: 3-Input OR with Active Low A and B Inputs
• Input: A, B, C
• Output: Y

Table 18-79. Truth Table

A	B	C	Y
X	0	X	1
0	X	X	1
X	X	1	1
1	1	0	0

Table 18-80. Modules

Family	Seq	Comb
All listed	—	1

0R3FTT

This component is supported by A500K, APA families.

• Function: 3-Input OR with Active Low A Input
• Input: A, B, C
• Output: Y

Table 18-81. Truth Table

A	B	C	Y
0	X	X	1
X	X	1	1
X	1	X	1
1	0	0	0

Table 18-82. Modules

Family	Seq	Comb
All listed	—	1

PWR

This component is supported by A500K, APA families.

• Function: Power

XNOR2

This component is supported by A500K, APA families.

• Function: 2-Input Exclusive NOR
• Input: A, B
• Output: Y

Table 18-83. Truth Table

A	B	Y
0	0	1
1	1	1
1	0	0
0	1	0

Table 18-84. Modules

Family	Seq	Comb
All listed	—	1

XNOR2FT

This component is supported by A500K, APA families.

• Function: 2-Input Exclusive NOR with Active Low A Input
• Input: A, B
• Output: Y

Table 18-85. Truth Table

A	B	Y
0	0	0
0	1	1
1	0	1
1	1	0

Table 18-86. Modules

Family	Seq	Comb
All listed	—	1

XOR2

This component is supported by A500K, APA families.

• Function: 2-Input Exclusive OR
• Input: A, B
• Output: Y

Table 18-87. Truth Table

A	B	Y
0	0	0
0	1	1
1	0	1
1	1	0

Table 18-88. Modules

Family	Seq	Comb
All listed	—	1

XOR2FT

This component is supported by A500K, APA families.

• Function: 2-Input Exclusive OR with Active Low A Input
• Input: A, B
• Output: Y

Table 18-89. Truth Table

A	B	Y
0	0	1
0	1	0
1	0	0
1	1	1

Table 18-90. Modules

Family	Seq	Comb
All listed	—	1