| No. |
Part Name |
Description |
Manufacturer |
| 1 |
DL021D |
2 AND gates with 4 inputs each (TTL low-power Schottky series), possibly equivalent SN74LS21N |
RFT |
| 2 |
DM74AS21N |
Dual 4-Input AND Gate |
Fairchild Semiconductor |
| 3 |
SN74ALS21N |
Dual 4-Input positive-AND gates |
Motorola |
| 4 |
SN74AS21N |
Dual 4-Input Positive-AND Gates |
Texas Instruments |
| 5 |
SN74AS21NSR |
Dual 4-Input Positive-AND Gates |
Texas Instruments |
| 6 |
SN74LS21N |
DUAL 4-INPUT AND GATE |
Motorola |
| 7 |
SN74LS21N |
Dual 4-input positive-AND gates |
Texas Instruments |
| 8 |
SN74LS21N3 |
Dual 4-input positive-AND gates |
Texas Instruments |
| 9 |
SN74LS21NE4 |
Dual 4-input positive-AND gates 14-PDIP 0 to 70 |
Texas Instruments |
| 10 |
SN74LS21NSR |
Dual 4-input positive-AND gates |
Texas Instruments |
| | | |
