| 667161 | HEF4021BF | 8-bit static shift register | Philips |
| 667162 | HEF4021BN | 8-bit static shift register | Philips |
| 667163 | HEF4021BP | 8-bit static shift register | NXP Semiconductors |
| 667164 | HEF4021BP | 8-bit static shift register | Philips |
| 667165 | HEF4021BPB | 8-bit static shift register | Philips |
| 667166 | HEF4021BT | 8-bit static shift register | Nexperia |
| 667167 | HEF4021BT | 8-bit static shift register | NXP Semiconductors |
| 667168 | HEF4021BT | 8-bit static shift register | Philips |
| 667169 | HEF4021BT-Q100 | 8-bit static shift register | Nexperia |
| 667170 | HEF4021BT-Q100 | 8-bit static shift register | NXP Semiconductors |
| 667171 | HEF4021BTT | 8-bit static shift register | Nexperia |
| 667172 | HEF4021BTT | 8-bit static shift register | NXP Semiconductors |
| 667173 | HEF4021BTT-Q100 | 8-bit static shift register | Nexperia |
| 667174 | HEF4021BTT-Q100 | 8-bit static shift register | NXP Semiconductors |
| 667175 | HEF4021BU | 8-bit static shift register | Philips |
| 667176 | HEF4022B | 4-stage divide-by-8 Johnson counter | Philips |
| 667177 | HEF4022BD | 4-stage divide-by-8 Johnson counter | Philips |
| 667178 | HEF4022BF | 4-stage divide-by-8 Johnson counter | Philips |
| 667179 | HEF4022BN | 4-stage divide-by-8 Johnson counter | Philips |
|
| 667180 | HEF4022BP | 4-stage divide-by-8 Johnson counter | Philips |
| 667181 | HEF4022BT | 4-stage divide-by-8 Johnson counter | Philips |
| 667182 | HEF4023B | Triple 3-input NAND gate | Philips |
| 667183 | HEF4023BD | Triple 3-input NAND gate | Philips |
| 667184 | HEF4023BDB | Triple 3-input NAND gate | Philips |
| 667185 | HEF4023BF | Triple 3-input NAND gate | Philips |
| 667186 | HEF4023BN | Triple 3-input NAND gate | Philips |
| 667187 | HEF4023BP | Triple 3-input NAND gate | NXP Semiconductors |
| 667188 | HEF4023BP | Triple 3-input NAND gate | Philips |
| 667189 | HEF4023BPB | Triple 3-input NAND gate | Philips |
| 667190 | HEF4023BT | Triple 3-input NAND gate | NXP Semiconductors |
| 667191 | HEF4023BT | Triple 3-input NAND gate | Philips |
| 667192 | HEF4023BU | Triple 3-input NAND gate | Philips |
| 667193 | HEF40240 | Octal inverting buffers with 3-state outputs | Philips |
| 667194 | HEF40240B | Octal inverting buffers with 3-state outputs | Philips |
| 667195 | HEF40240BD | Octal inverting buffers with 3-state outputs | Philips |
| 667196 | HEF40240BDB | Octal inverting buffers with 3-state outputs | Philips |
| 667197 | HEF40240BF | Octal inverting buffers with 3-state outputs | Philips |
| 667198 | HEF40240BN | Octal inverting buffers with 3-state outputs | Philips |
| 667199 | HEF40240BP | Octal inverting buffers with 3-state outputs | NXP Semiconductors |
| 667200 | HEF40240BP | Octal inverting buffers with 3-state outputs | Philips |
