| CD4521BEE4 | CMOS 24-Stage Frequency Divider | Datasheet*) |
| CD4521BM | CMOS 24-Stage Frequency Divider | Datasheet*) |
| CD4521BM96 | CMOS 24-Stage Frequency Divider | Datasheet*) |
| CD4521BM96E4 | CMOS 24-Stage Frequency Divider | Datasheet*) |
| CD4521BME4 | CMOS 24-Stage Frequency Divider | Datasheet*) |
| CD4521BMT | CMOS 24-Stage Frequency Divider | Datasheet*) |
| CD4521BMTE4 | CMOS 24-Stage Frequency Divider | Datasheet*) |
| CD4521BNSR | CMOS 24-Stage Frequency Divider | Datasheet*) |
| CD4521BNSRE4 | CMOS 24-Stage Frequency Divider | Datasheet*) |
| CD4521BPW | CMOS 24-Stage Frequency Divider | Datasheet*) |
| CD4521BPWE4 | CMOS 24-Stage Frequency Divider | Datasheet*) |
| CD4521BPWRE4 | CMOS 24-Stage Frequency Divider | Datasheet*) |