| 制造商 | 部件名 | 数据表 | 功能描述 |
 Texas Instruments |
SN54F21
|
67Kb / 5P |
DUAL 4-INPUT POSITIVE-AND GATES
|
 Hitachi Semiconductor |
HD74LV21A
|
54Kb / 12P |
Dual 4-input Positive AND Gates
|
 Texas Instruments |
54AC11021
|
64Kb / 5P |
DUAL 4-INPUT POSITIVE-AND GATES
|
 List of Unclassifed Man... |
GD74LS21
|
96Kb / 2P |
DUAL 4-INPUT POSITIVE AND GATES
|
 Texas Instruments |
SN54HC21
|
425Kb / 14P |
DUAL 4-INPUT POSITIVE-AND GATES
|
|
SN54LV21A
|
318Kb / 11P |
DUAL 4-INPUT POSITIVE-AND GATES
|
 Renesas Technology Corp |
HD74LV21A
|
70Kb / 9P |
Dual 4-input Positive AND Gates
|
|
HD74LS21
|
55Kb / 5P |
Dual 4-input Positive AND Gates
|
 Texas Instruments |
SN54LS21
|
840Kb / 16P |
DUAL 4-INPUT POSITIVE-AND GATES
|
|
SN54ALS21A
|
1Mb / 17P |
DUAL 4-INPUT POSITIVE-AND GATES
|