| 667401 | HEF4046BU | Phase-locked loop | Philips |
| 667402 | HEF4047B | Monostable/astable multivibrator | Philips |
| 667403 | HEF4047BD | Monostable/astable multivibrator | Philips |
| 667404 | HEF4047BDB | Monostable/astable multivibrator | Philips |
| 667405 | HEF4047BF | Monostable/astable multivibrator | Philips |
| 667406 | HEF4047BN | Monostable/astable multivibrator | Philips |
| 667407 | HEF4047BP | Monostable/astable multivibrator | NXP Semiconductors |
| 667408 | HEF4047BP | Monostable/astable multivibrator | Philips |
| 667409 | HEF4047BPB | Monostable/astable multivibrator | Philips |
| 667410 | HEF4047BT | Monostable/astable multivibrator | Nexperia |
| 667411 | HEF4047BT | 2 x 25 W class-D power amplifier | Philips |
| 667412 | HEF4047BT | Monostable/astable multivibrator | Philips |
| 667413 | HEF4047BT-Q100 | Monostable/astable multivibrator | Nexperia |
| 667414 | HEF4047BU | Monostable/astable multivibrator | Philips |
| 667415 | HEF4049 | HEX inverting buffers | Philips |
| 667416 | HEF4049B | HEX inverting buffers | Philips |
| 667417 | HEF4049BD | HEX inverting buffers | Philips |
| 667418 | HEF4049BDB | HEX inverting buffers | Philips |
| 667419 | HEF4049BF | HEX inverting buffers | Philips |
|
| 667420 | HEF4049BN | HEX inverting buffers | Philips |
| 667421 | HEF4049BP | Hex inverting buffers | NXP Semiconductors |
| 667422 | HEF4049BP | HEX inverting buffers | Philips |
| 667423 | HEF4049BPB | HEX inverting buffers | Philips |
| 667424 | HEF4049BT | Hex inverting buffers | Nexperia |
| 667425 | HEF4049BT | Hex inverting buffers | NXP Semiconductors |
| 667426 | HEF4049BT | HEX inverting buffers | Philips |
| 667427 | HEF4049BT-Q100 | Hex inverting buffers | Nexperia |
| 667428 | HEF4049BT-Q100 | Hex inverting buffers | NXP Semiconductors |
| 667429 | HEF4049BU | HEX inverting buffers | Philips |
| 667430 | HEF4050B | HEX non-inverting buffers | Philips |
| 667431 | HEF4050BD | HEX non-inverting buffers | Philips |
| 667432 | HEF4050BDB | HEX non-inverting buffers | Philips |
| 667433 | HEF4050BF | HEX non-inverting buffers | Philips |
| 667434 | HEF4050BN | HEX non-inverting buffers | Philips |
| 667435 | HEF4050BP | Hex non-inverting buffers | NXP Semiconductors |
| 667436 | HEF4050BP | HEX non-inverting buffers | Philips |
| 667437 | HEF4050BPB | HEX non-inverting buffers | Philips |
| 667438 | HEF4050BT | Hex non-inverting buffers | Nexperia |
| 667439 | HEF4050BT | Hex non-inverting buffers | NXP Semiconductors |
| 667440 | HEF4050BT | HEX non-inverting buffers | Philips |
